|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CSharp.Extensions;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Editor.UnitTests.TypeInferrer;
using Microsoft.CodeAnalysis.Editor.UnitTests.Workspaces;
using Microsoft.CodeAnalysis.LanguageService;
using Microsoft.CodeAnalysis.Shared.Extensions;
using Microsoft.CodeAnalysis.Test.Utilities;
using Microsoft.CodeAnalysis.Text;
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.TypeInferrer;
[Trait(Traits.Feature, Traits.Features.TypeInferenceService)]
public sealed partial class TypeInferrerTests : TypeInferrerTestBase<CSharpTestWorkspaceFixture>
{
protected override async Task TestWorkerAsync(Document document, TextSpan textSpan, string expectedType, TestMode mode)
{
var root = await document.GetSyntaxRootAsync();
var node = FindExpressionSyntaxFromSpan(root, textSpan);
var typeInference = document.GetLanguageService<ITypeInferenceService>();
ITypeSymbol inferredType;
if (mode == TestMode.Position)
{
var position = node?.SpanStart ?? textSpan.Start;
inferredType = typeInference.InferType(await document.ReuseExistingSpeculativeModelAsync(position, CancellationToken.None), position, objectAsDefault: true, cancellationToken: CancellationToken.None);
}
else
{
inferredType = typeInference.InferType(await document.ReuseExistingSpeculativeModelAsync(node?.Span ?? textSpan, CancellationToken.None), node, objectAsDefault: true, cancellationToken: CancellationToken.None);
}
var typeSyntax = inferredType.GenerateTypeSyntax().NormalizeWhitespace();
Assert.Equal(expectedType, typeSyntax.ToString());
}
private async Task TestInClassAsync(string text, string expectedType, TestMode mode)
{
text = """
class C
{
$
}
""".Replace("$", text);
await TestAsync(text, expectedType, mode);
}
private async Task TestInMethodAsync(string text, string expectedType, TestMode mode)
{
text = """
class C
{
void M()
{
$
}
}
""".Replace("$", text);
await TestAsync(text, expectedType, mode);
}
private static ExpressionSyntax FindExpressionSyntaxFromSpan(SyntaxNode root, TextSpan textSpan)
{
var token = root.FindToken(textSpan.Start);
var currentNode = token.Parent;
while (currentNode != null)
{
if (currentNode is ExpressionSyntax result && result.Span == textSpan)
{
return result;
}
currentNode = currentNode.Parent;
}
return null;
}
[Fact]
public Task TestConditional1()
=> TestInMethodAsync(
@"var q = [|Goo()|] ? 1 : 2;", "global::System.Boolean",
TestMode.Node);
[Theory, CombinatorialData]
public Task TestConditional2(TestMode mode)
=> TestInMethodAsync(
@"var q = a ? [|Goo()|] : 2;", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestConditional3(TestMode mode)
=> TestInMethodAsync(
@"var q = a ? """" : [|Goo()|];", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestVariableDeclarator1(TestMode mode)
=> TestInMethodAsync(
@"int q = [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestVariableDeclarator2(TestMode mode)
=> TestInMethodAsync(
@"var q = [|Goo()|];", "global::System.Object", mode);
[Theory, CombinatorialData]
public Task TestVariableDeclaratorNullableReferenceType(TestMode mode)
=> TestInMethodAsync(
"""
#nullable enable
string? q = [|Goo()|];
""", "global::System.String?", mode);
[Fact]
public Task TestCoalesce1()
=> TestInMethodAsync(
@"var q = [|Goo()|] ?? 1;", "global::System.Int32?", TestMode.Node);
[Theory, CombinatorialData]
public Task TestCoalesce2(TestMode mode)
=> TestInMethodAsync(
"""
bool? b;
var q = b ?? [|Goo()|];
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
public Task TestCoalesce3(TestMode mode)
=> TestInMethodAsync(
"""
string s;
var q = s ?? [|Goo()|];
""", "global::System.String", mode);
[Fact]
public Task TestCoalesce4()
=> TestInMethodAsync(
@"var q = [|Goo()|] ?? string.Empty;", "global::System.String?", TestMode.Node);
[Fact]
public Task TestCoalesceWithErrorType()
=> TestInMethodAsync(
"""
ErrorType s;
var q = [|Goo()|] ?? s;
""", "ErrorType", TestMode.Node);
[Theory, CombinatorialData]
public Task TestBinaryExpression1(TestMode mode)
=> TestInMethodAsync(
"""
string s;
var q = s + [|Goo()|];
""", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestBinaryExpression2(TestMode mode)
=> TestInMethodAsync(
"""
var s;
var q = s || [|Goo()|];
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
public Task TestBinaryOperator1(TestMode mode)
=> TestInMethodAsync(
@"var q = x << [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestBinaryOperator2(TestMode mode)
=> TestInMethodAsync(
@"var q = x >> [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestBinaryOperator3(TestMode mode)
=> TestInMethodAsync(
@"var q = x >>> [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestAssignmentOperator3(TestMode mode)
=> TestInMethodAsync(
@"var q <<= [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestAssignmentOperator4(TestMode mode)
=> TestInMethodAsync(
@"var q >>= [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestOverloadedConditionalLogicalOperatorsInferBool(TestMode mode)
=> TestAsync(
"""
using System;
class C
{
public static C operator &(C c, C d)
{
return null;
}
public static bool operator true(C c)
{
return true;
}
public static bool operator false(C c)
{
return false;
}
static void Main(string[] args)
{
var c = new C() && [|Goo()|];
}
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestConditionalLogicalOrOperatorAlwaysInfersBool(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = a || [|7|];
}
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestConditionalLogicalAndOperatorAlwaysInfersBool(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = a && [|7|];
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrOperatorInference1()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = [|a|] | true;
}
}
""", "global::System.Boolean", TestMode.Node);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrOperatorInference2()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = [|a|] | b | c || d;
}
}
""", "global::System.Boolean", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrOperatorInference3(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = a | b | [|c|] || d;
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrOperatorInference4()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = Goo([|a|] | b);
}
static object Goo(Program p)
{
return p;
}
}
""", "Program", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrOperatorInference5(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = Goo([|a|] | b);
}
static object Goo(bool p)
{
return p;
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrOperatorInference6()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if (([|x|] | y) != 0) {}
}
}
""", "global::System.Int32", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrOperatorInference7(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if ([|x|] | y) {}
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndOperatorInference1()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = [|a|] & true;
}
}
""", "global::System.Boolean", TestMode.Node);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndOperatorInference2()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = [|a|] & b & c && d;
}
}
""", "global::System.Boolean", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndOperatorInference3(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = a & b & [|c|] && d;
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndOperatorInference4()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = Goo([|a|] & b);
}
static object Goo(Program p)
{
return p;
}
}
""", "Program", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndOperatorInference5(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = Goo([|a|] & b);
}
static object Goo(bool p)
{
return p;
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndOperatorInference6()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if (([|x|] & y) != 0) {}
}
}
""", "global::System.Int32", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndOperatorInference7(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if ([|x|] & y) {}
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorOperatorInference1()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = [|a|] ^ true;
}
}
""", "global::System.Boolean", TestMode.Node);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorOperatorInference2()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = [|a|] ^ b ^ c && d;
}
}
""", "global::System.Boolean", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorOperatorInference3(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = a ^ b ^ [|c|] && d;
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorOperatorInference4()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = Goo([|a|] ^ b);
}
static object Goo(Program p)
{
return p;
}
}
""", "Program", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorOperatorInference5(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
var x = Goo([|a|] ^ b);
}
static object Goo(bool p)
{
return p;
}
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorOperatorInference6()
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if (([|x|] ^ y) != 0) {}
}
}
""", "global::System.Int32", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorOperatorInference7(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if ([|x|] ^ y) {}
}
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrEqualsOperatorInference1(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if ([|x|] |= y) {}
}
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalOrEqualsOperatorInference2(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
int z = [|x|] |= y;
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndEqualsOperatorInference1(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if ([|x|] &= y) {}
}
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalAndEqualsOperatorInference2(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
int z = [|x|] &= y;
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorEqualsOperatorInference1(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
if ([|x|] ^= y) {}
}
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
public Task TestLogicalXorEqualsOperatorInference2(TestMode mode)
=> TestAsync("""
using System;
class C
{
static void Main(string[] args)
{
int z = [|x|] ^= y;
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInConstructor(TestMode mode)
=> TestInClassAsync(
"""
C()
{
return [|Goo()|];
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInDestructor(TestMode mode)
=> TestInClassAsync(
"""
~C()
{
return [|Goo()|];
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInMethod(TestMode mode)
=> TestInClassAsync(
"""
int M()
{
return [|Goo()|];
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInMethodNullableReference(TestMode mode)
=> TestInClassAsync(
"""
#nullable enable
string? M()
{
return [|Goo()|];
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestReturnInVoidMethod(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
return [|Goo()|];
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskOfTMethod(TestMode mode)
=> TestInClassAsync(
"""
async System.Threading.Tasks.Task<int> M()
{
return [|Goo()|];
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskOfTMethodNestedNullability(TestMode mode)
=> TestInClassAsync(
"""
async System.Threading.Tasks.Task<string?> M()
{
return [|Goo()|];
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskMethod(TestMode mode)
=> TestInClassAsync(
"""
async System.Threading.Tasks.Task M()
{
return [|Goo()|];
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncVoidMethod(TestMode mode)
=> TestInClassAsync(
"""
async void M()
{
return [|Goo()|];
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInOperator(TestMode mode)
=> TestInClassAsync(
"""
public static C operator ++(C c)
{
return [|Goo()|];
}
""", "global::C", mode);
[Theory, CombinatorialData]
public Task TestReturnInConversionOperator(TestMode mode)
=> TestInClassAsync(
"""
public static implicit operator int(C c)
{
return [|Goo()|];
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInPropertyGetter(TestMode mode)
=> TestInClassAsync(
"""
int P
{
get
{
return [|Goo()|];
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInPropertyGetterNullableReference(TestMode mode)
=> TestInClassAsync(
"""
#nullable enable
string? P
{
get
{
return [|Goo()|];
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestReturnInPropertySetter(TestMode mode)
=> TestInClassAsync(
"""
int P
{
set
{
return [|Goo()|];
}
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInIndexerGetter(TestMode mode)
=> TestInClassAsync(
"""
int this[int i]
{
get
{
return [|Goo()|];
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInIndexerGetterNullableReference(TestMode mode)
=> TestInClassAsync(
"""
#nullable enable
string? this[int i]
{
get
{
return [|Goo()|];
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestReturnInIndexerSetter(TestMode mode)
=> TestInClassAsync(
"""
int this[int i]
{
set
{
return [|Goo()|];
}
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInEventAdder(TestMode mode)
=> TestInClassAsync(
"""
event System.EventHandler E
{
add
{
return [|Goo()|];
}
remove { }
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInEventRemover(TestMode mode)
=> TestInClassAsync(
"""
event System.EventHandler E
{
add { }
remove
{
return [|Goo()|];
}
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
int F()
{
return [|Goo()|];
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInLocalFunctionNullableReference(TestMode mode)
=> TestInClassAsync(
"""
#nullable enable
void M()
{
string? F()
{
return [|Goo()|];
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskOfTLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
async System.Threading.Tasks.Task<int> F()
{
return [|Goo()|];
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
async System.Threading.Tasks.Task F()
{
return [|Goo()|];
}
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncVoidLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
async void F()
{
return [|Goo()|];
}
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedConstructor(TestMode mode)
=> TestInClassAsync(
@"C() => [|Goo()|];", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedDestructor(TestMode mode)
=> TestInClassAsync(
@"~C() => [|Goo()|];", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedMethod(TestMode mode)
=> TestInClassAsync(
@"int M() => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedVoidMethod(TestMode mode)
=> TestInClassAsync(
@"void M() => [|Goo()|];", "void", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
public Task TestExpressionBodiedAsyncTaskOfTMethod(TestMode mode)
=> TestInClassAsync(
@"async System.Threading.Tasks.Task<int> M() => [|Goo()|];", "global::System.Int32", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
public Task TestExpressionBodiedAsyncTaskOfTMethodNullableReference(TestMode mode)
=> TestInClassAsync(
"""
#nullable enable
async System.Threading.Tasks.Task<string?> M() => [|Goo()|];
""", "global::System.String?", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
public Task TestExpressionBodiedAsyncTaskMethod(TestMode mode)
=> TestInClassAsync(
@"async System.Threading.Tasks.Task M() => [|Goo()|];", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedAsyncVoidMethod(TestMode mode)
=> TestInClassAsync(
@"async void M() => [|Goo()|];", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedOperator(TestMode mode)
=> TestInClassAsync(
@"public static C operator ++(C c) => [|Goo()|];", "global::C", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedConversionOperator(TestMode mode)
=> TestInClassAsync(
@"public static implicit operator int(C c) => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedProperty(TestMode mode)
=> TestInClassAsync(
@"int P => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedIndexer(TestMode mode)
=> TestInClassAsync(
@"int this[int i] => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedPropertyGetter(TestMode mode)
=> TestInClassAsync(
@"int P { get => [|Goo()|]; }", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedPropertySetter(TestMode mode)
=> TestInClassAsync(
@"int P { set => [|Goo()|]; }", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedIndexerGetter(TestMode mode)
=> TestInClassAsync(
@"int this[int i] { get => [|Goo()|]; }", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedIndexerSetter(TestMode mode)
=> TestInClassAsync(
@"int this[int i] { set => [|Goo()|]; }", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedEventAdder(TestMode mode)
=> TestInClassAsync(
@"event System.EventHandler E { add => [|Goo()|]; remove { } }", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedEventRemover(TestMode mode)
=> TestInClassAsync(
@"event System.EventHandler E { add { } remove => [|Goo()|]; }", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
int F() => [|Goo()|];
}
""", "global::System.Int32", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
public Task TestExpressionBodiedAsyncTaskOfTLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
async System.Threading.Tasks.Task<int> F() => [|Goo()|];
}
""", "global::System.Int32", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
public Task TestExpressionBodiedAsyncTaskLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
async System.Threading.Tasks.Task F() => [|Goo()|];
}
""", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionBodiedAsyncVoidLocalFunction(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
async void F() => [|Goo()|];
}
""", "void", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/827897")]
public Task TestYieldReturnInMethod([CombinatorialValues("IEnumerable", "IEnumerator", "InvalidGenericType")] string returnTypeName, TestMode mode)
=> TestAsync($$"""
using System.Collections.Generic;
class C
{
{{returnTypeName}}<int> M()
{
yield return [|abc|]
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestYieldReturnInMethodNullableReference([CombinatorialValues("IEnumerable", "IEnumerator", "InvalidGenericType")] string returnTypeName, TestMode mode)
=> TestAsync($$"""
#nullable enable
using System.Collections.Generic;
class C
{
{{returnTypeName}}<string?> M()
{
yield return [|abc|]
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestYieldReturnInAsyncMethod([CombinatorialValues("IAsyncEnumerable", "IAsyncEnumerator", "InvalidGenericType")] string returnTypeName, TestMode mode)
=> TestAsync($$"""
namespace System.Collections.Generic
{
interface {{returnTypeName}}<T> { }
class C
{
async {{returnTypeName}}<int> M()
{
yield return [|abc|]
}
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestYieldReturnInvalidTypeInMethod([CombinatorialValues("int[]", "InvalidNonGenericType", "InvalidGenericType<int, int>")] string returnType, TestMode mode)
=> TestAsync($$"""
class C
{
{{returnType}} M()
{
yield return [|abc|]
}
}
""", "global::System.Object", mode);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/30235")]
public Task TestYieldReturnInLocalFunction(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
IEnumerable<int> F()
{
yield return [|abc|]
}
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestYieldReturnInPropertyGetter(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
IEnumerable<int> P
{
get
{
yield return [|abc|]
}
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestYieldReturnInPropertySetter(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
IEnumerable<int> P
{
set
{
yield return [|abc|]
}
}
}
""", "global::System.Object", mode);
[Theory, CombinatorialData]
public Task TestYieldReturnAsGlobalStatement(TestMode mode)
=> TestAsync(
@"yield return [|abc|]", "global::System.Object", mode, sourceCodeKind: SourceCodeKind.Script);
[Theory, CombinatorialData]
public Task TestReturnInSimpleLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<string, int> f = s =>
{
return [|Goo()|];
};
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<int> f = () =>
{
return [|Goo()|];
};
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInLambdaWithNullableReturn(TestMode mode)
=> TestInMethodAsync(
"""
#nullable enable
System.Func<string, string?> f = s =>
{
return [|Goo()|];
};
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestReturnInAnonymousMethod(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<int> f = delegate ()
{
return [|Goo()|];
};
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInAnonymousMethodWithNullableReturn(TestMode mode)
=> TestInMethodAsync(
"""
#nullable enable
System.Func<string?> f = delegate ()
{
return [|Goo()|];
};
""", "global::System.String?", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/4486"), CombinatorialData]
public Task TestReturnInAsyncTaskOfTSimpleLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<string, System.Threading.Tasks.Task<int>> f = async s =>
{
return [|Goo()|];
};
""", "global::System.Int32", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/4486"), CombinatorialData]
public Task TestReturnInAsyncTaskOfTParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<System.Threading.Tasks.Task<int>> f = async () =>
{
return [|Goo()|];
};
""", "global::System.Int32", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/4486"), CombinatorialData]
public Task TestReturnInAsyncTaskOfTAnonymousMethod(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<System.Threading.Tasks.Task<int>> f = async delegate ()
{
return [|Goo()|];
};
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskOfTAnonymousMethodWithNullableReference(TestMode mode)
=> TestInMethodAsync(
"""
#nullable enable
System.Func<System.Threading.Tasks.Task<string?>> f = async delegate ()
{
return [|Goo()|];
};
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskSimpleLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<string, System.Threading.Tasks.Task> f = async s =>
{
return [|Goo()|];
};
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<System.Threading.Tasks.Task> f = async () =>
{
return [|Goo()|];
};
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncTaskAnonymousMethod(TestMode mode)
=> TestInMethodAsync(
"""
System.Func<System.Threading.Tasks.Task> f = async delegate ()
{
return [|Goo()|];
};
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncVoidSimpleLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Action<string> f = async s =>
{
return [|Goo()|];
};
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncVoidParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
"""
System.Action f = async () =>
{
return [|Goo()|];
};
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnInAsyncVoidAnonymousMethod(TestMode mode)
=> TestInMethodAsync(
"""
System.Action f = async delegate ()
{
return [|Goo()|];
};
""", "void", mode);
[Theory, CombinatorialData]
public Task TestReturnAsGlobalStatement(TestMode mode)
=> TestAsync(
@"return [|Goo()|];", "global::System.Object", mode, sourceCodeKind: SourceCodeKind.Script);
[Theory, CombinatorialData]
public Task TestSimpleLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Func<string, int> f = s => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Func<int> f = () => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/30232")]
public Task TestAsyncTaskOfTSimpleLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Func<string, System.Threading.Tasks.Task<int>> f = async s => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestAsyncTaskOfTSimpleLambdaWithNullableReturn(TestMode mode)
=> TestInMethodAsync(
"""
#nullable enable
System.Func<string, System.Threading.Tasks.Task<string?>> f = async s => [|Goo()|];
""", "global::System.String?", mode);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/30232")]
public Task TestAsyncTaskOfTParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Func<System.Threading.Tasks.Task<int>> f = async () => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/30232")]
public Task TestAsyncTaskSimpleLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Func<string, System.Threading.Tasks.Task> f = async s => [|Goo()|];", "void", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/30232"), CombinatorialData]
public Task TestAsyncTaskParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Func<System.Threading.Tasks.Task> f = async () => [|Goo()|];", "void", mode);
[Theory, CombinatorialData]
public Task TestAsyncVoidSimpleLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Action<string> f = async s => [|Goo()|];", "void", mode);
[Theory, CombinatorialData]
public Task TestAsyncVoidParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Action f = async () => [|Goo()|];", "void", mode);
[Theory, CombinatorialData]
public Task TestExpressionTreeSimpleLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Linq.Expressions.Expression<System.Func<string, int>> f = s => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestExpressionTreeParenthesizedLambda(TestMode mode)
=> TestInMethodAsync(
@"System.Linq.Expressions.Expression<System.Func<int>> f = () => [|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestThrow(TestMode mode)
=> TestInMethodAsync(
@"throw [|Goo()|];", "global::System.Exception", mode);
[Theory, CombinatorialData]
public async Task TestCatch(TestMode mode)
=> await TestInMethodAsync("try { } catch ([|Goo|] ex) { }", "global::System.Exception", mode);
[Theory, CombinatorialData]
public async Task TestIf(TestMode mode)
=> await TestInMethodAsync(@"if ([|Goo()|]) { }", "global::System.Boolean", mode);
[Theory, CombinatorialData]
public async Task TestWhile(TestMode mode)
=> await TestInMethodAsync(@"while ([|Goo()|]) { }", "global::System.Boolean", mode);
[Theory, CombinatorialData]
public async Task TestDo(TestMode mode)
=> await TestInMethodAsync(@"do { } while ([|Goo()|])", "global::System.Boolean", mode);
[Theory, CombinatorialData]
public Task TestFor1(TestMode mode)
=> TestInMethodAsync(
"""
for (int i = 0; [|Goo()|];
i++) { }
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
public async Task TestFor2(TestMode mode)
=> await TestInMethodAsync(@"for (string i = [|Goo()|]; ; ) { }", "global::System.String", mode);
[Theory, CombinatorialData]
public async Task TestFor3(TestMode mode)
=> await TestInMethodAsync(@"for (var i = [|Goo()|]; ; ) { }", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestForNullableReference(TestMode mode)
=> TestInMethodAsync(
"""
#nullable enable
for (string? s = [|Goo()|]; ; ) { }
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public async Task TestUsing1(TestMode mode)
=> await TestInMethodAsync(@"using ([|Goo()|]) { }", "global::System.IDisposable", mode);
[Theory, CombinatorialData]
public async Task TestUsing2(TestMode mode)
=> await TestInMethodAsync(@"using (int i = [|Goo()|]) { }", "global::System.Int32", mode);
[Theory, CombinatorialData]
public async Task TestUsing3(TestMode mode)
=> await TestInMethodAsync(@"using (var v = [|Goo()|]) { }", "global::System.IDisposable", mode);
[Theory, CombinatorialData]
public async Task TestForEach(TestMode mode)
=> await TestInMethodAsync(@"foreach (int v in [|Goo()|]) { }", "global::System.Collections.Generic.IEnumerable<global::System.Int32>", mode);
[Theory(Skip = "https://github.com/dotnet/roslyn/issues/37309"), CombinatorialData]
public Task TestForEachNullableElements(TestMode mode)
=> TestInMethodAsync(
"""
#nullable enable
foreach (string? v in [|Goo()|]) { }
""", "global::System.Collections.Generic.IEnumerable<global::System.String?>", mode);
[Theory, CombinatorialData]
public Task TestPrefixExpression1(TestMode mode)
=> TestInMethodAsync(
@"var q = +[|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestPrefixExpression2(TestMode mode)
=> TestInMethodAsync(
@"var q = -[|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestPrefixExpression3(TestMode mode)
=> TestInMethodAsync(
@"var q = ~[|Goo()|];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestPrefixExpression4(TestMode mode)
=> TestInMethodAsync(
@"var q = ![|Goo()|];", "global::System.Boolean", mode);
[Theory, CombinatorialData]
public Task TestPrefixExpression5(TestMode mode)
=> TestInMethodAsync(
@"var q = System.DayOfWeek.Monday & ~[|Goo()|];", "global::System.DayOfWeek", mode);
[Theory, CombinatorialData]
public Task TestArrayRankSpecifier(TestMode mode)
=> TestInMethodAsync(
@"var q = new string[[|Goo()|]];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public async Task TestSwitch1(TestMode mode)
=> await TestInMethodAsync(@"switch ([|Goo()|]) { }", "global::System.Int32", mode);
[Theory, CombinatorialData]
public async Task TestSwitch2(TestMode mode)
=> await TestInMethodAsync(@"switch ([|Goo()|]) { default: }", "global::System.Int32", mode);
[Theory, CombinatorialData]
public async Task TestSwitch3(TestMode mode)
=> await TestInMethodAsync(@"switch ([|Goo()|]) { case ""a"": }", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestMethodCall1(TestMode mode)
=> TestInMethodAsync(
@"Bar([|Goo()|]);", "global::System.Object", mode);
[Theory, CombinatorialData]
public Task TestMethodCall2(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
Bar([|Goo()|]);
}
void Bar(int i);
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestMethodCall3(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
Bar([|Goo()|]);
}
void Bar();
""", "global::System.Object", mode);
[Theory, CombinatorialData]
public Task TestMethodCall4(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
Bar([|Goo()|]);
}
void Bar(int i, string s);
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestMethodCall5(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
Bar(s: [|Goo()|]);
}
void Bar(int i, string s);
""", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestMethodCallNullableReference(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
Bar([|Goo()|]);
}
void Bar(string? s);
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestConstructorCall1(TestMode mode)
=> TestInMethodAsync(
@"new C([|Goo()|]);", "global::System.Object", mode);
[Theory, CombinatorialData]
public Task TestConstructorCall2(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
new C([|Goo()|]);
}
C(int i)
{
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestConstructorCall3(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
new C([|Goo()|]);
}
C()
{
}
""", "global::System.Object", mode);
[Theory, CombinatorialData]
public Task TestConstructorCall4(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
new C([|Goo()|]);
}
C(int i, string s)
{
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestConstructorCall5(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
new C(s: [|Goo()|]);
}
C(int i, string s)
{
}
""", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestConstructorCallNullableParameter(TestMode mode)
=> TestInClassAsync(
"""
#nullable enable
void M()
{
new C([|Goo()|]);
}
C(string? s)
{
}
""", "global::System.String?", mode);
[Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112"), CombinatorialData]
public Task TestThisConstructorInitializer1(TestMode mode)
=> TestAsync(
"""
class MyClass
{
public MyClass(int x) : this([|test|])
{
}
}
""", "global::System.Int32", mode);
[Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112"), CombinatorialData]
public Task TestThisConstructorInitializer2(TestMode mode)
=> TestAsync(
"""
class MyClass
{
public MyClass(int x, string y) : this(5, [|test|])
{
}
}
""", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestThisConstructorInitializerNullableParameter(TestMode mode)
=> TestAsync(
"""
#nullable enable
class MyClass
{
public MyClass(string? y) : this([|test|])
{
}
}
""", "global::System.String?", mode);
[Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112"), CombinatorialData]
public Task TestBaseConstructorInitializer(TestMode mode)
=> TestAsync(
"""
class B
{
public B(int x)
{
}
}
class D : B
{
public D() : base([|test|])
{
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestBaseConstructorInitializerNullableParameter(TestMode mode)
=> TestAsync(
"""
#nullable enable
class B
{
public B(string? x)
{
}
}
class D : B
{
public D() : base([|test|])
{
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
public Task TestIndexAccess1(TestMode mode)
=> TestInMethodAsync(
"""
string[] i;
i[[|Goo()|]];
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public async Task TestIndexerCall1(TestMode mode)
=> await TestInMethodAsync(@"this[[|Goo()|]];", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestIndexerCall2(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
this[[|Goo()|]];
}
int this[long i] { get; }
""", "global::System.Int64", mode);
[Theory, CombinatorialData]
public Task TestIndexerCall3(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
this[42, [|Goo()|]];
}
int this[int i, string s] { get; }
""", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestIndexerCall5(TestMode mode)
=> TestInClassAsync(
"""
void M()
{
this[s: [|Goo()|]];
}
int this[int i, string s] { get; }
""", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInImplicitArrayCreationSimple(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
var a = new[] { 1, [|2|] };
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInImplicitArrayCreation1(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
var a = new[] { Bar(), [|Goo()|] };
}
int Bar() { return 1; }
int Goo() { return 2; }
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInImplicitArrayCreation2(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
var a = new[] { Bar(), [|Goo()|] };
}
int Bar() { return 1; }
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInImplicitArrayCreation3(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
var a = new[] { Bar(), [|Goo()|] };
}
}
""", "global::System.Object", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInImplicitArrayCreationInferredAsNullable(TestMode mode)
=> TestAsync("""
#nullable enable
using System.Collections.Generic;
class C
{
void M()
{
var a = new[] { Bar(), [|Goo()|] };
}
object? Bar() { return null; }
}
""", "global::System.Object?", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInEqualsValueClauseSimple(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
int[] a = { 1, [|2|] };
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInEqualsValueClause(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
int[] a = { Bar(), [|Goo()|] };
}
int Bar() { return 1; }
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestArrayInitializerInEqualsValueClauseNullableElement(TestMode mode)
=> TestAsync("""
#nullable enable
using System.Collections.Generic;
class C
{
void M()
{
string?[] a = { [|Goo()|] };
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/529480")]
public Task TestCollectionInitializer1(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
new List<int>() { [|Goo()|] };
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestCollectionInitializerNullableElement(TestMode mode)
=> TestAsync("""
#nullable enable
using System.Collections.Generic;
class C
{
void M()
{
new List<string?>() { [|Goo()|] };
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/529480")]
public Task TestCollectionInitializer2(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
new Dictionary<int,string>() { { [|Goo()|], "" } };
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/529480")]
public Task TestCollectionInitializer3(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
class C
{
void M()
{
new Dictionary<int,string>() { { 0, [|Goo()|] } };
}
}
""", "global::System.String", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/529480")]
public Task TestCustomCollectionInitializerAddMethod1()
=> TestAsync("""
class C : System.Collections.IEnumerable
{
void M()
{
var x = new C() { [|a|] };
}
void Add(int i) { }
void Add(string s, bool b) { }
public System.Collections.IEnumerator GetEnumerator()
{
throw new System.NotImplementedException();
}
}
""", "global::System.Int32", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/529480")]
public Task TestCustomCollectionInitializerAddMethod2(TestMode mode)
=> TestAsync("""
class C : System.Collections.IEnumerable
{
void M()
{
var x = new C() { { "test", [|b|] } };
}
void Add(int i) { }
void Add(string s, bool b) { }
public System.Collections.IEnumerator GetEnumerator()
{
throw new System.NotImplementedException();
}
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/529480")]
public Task TestCustomCollectionInitializerAddMethod3(TestMode mode)
=> TestAsync("""
class C : System.Collections.IEnumerable
{
void M()
{
var x = new C() { { [|s|], true } };
}
void Add(int i) { }
void Add(string s, bool b) { }
public System.Collections.IEnumerator GetEnumerator()
{
throw new System.NotImplementedException();
}
}
""", "global::System.String", mode);
[Theory, CombinatorialData]
public Task TestCustomCollectionInitializerAddMethodWithNullableParameter(TestMode mode)
=> TestAsync("""
class C : System.Collections.IEnumerable
{
void M()
{
var x = new C() { { "test", [|s|] } };
}
void Add(int i) { }
void Add(string s, string? s2) { }
public System.Collections.IEnumerator GetEnumerator()
{
throw new System.NotImplementedException();
}
}
""", "global::System.String?", mode);
[Fact]
public Task TestArrayInference1()
=> TestAsync("""
class A
{
void Goo()
{
A[] x = new [|C|][] { };
}
}
""", "global::A", TestMode.Node);
[Fact]
public Task TestArrayInference1_Position()
=> TestAsync("""
class A
{
void Goo()
{
A[] x = new [|C|][] { };
}
}
""", "global::A[]", TestMode.Position);
[Fact]
public Task TestArrayInference2()
=> TestAsync("""
class A
{
void Goo()
{
A[][] x = new [|C|][][] { };
}
}
""", "global::A", TestMode.Node);
[Fact]
public Task TestArrayInference2_Position()
=> TestAsync("""
class A
{
void Goo()
{
A[][] x = new [|C|][][] { };
}
}
""", "global::A[][]", TestMode.Position);
[Fact]
public Task TestArrayInference3()
=> TestAsync("""
class A
{
void Goo()
{
A[][] x = new [|C|][] { };
}
}
""", "global::A[]", TestMode.Node);
[Fact]
public Task TestArrayInference3_Position()
=> TestAsync("""
class A
{
void Goo()
{
A[][] x = new [|C|][] { };
}
}
""", "global::A[][]", TestMode.Position);
[Theory, CombinatorialData]
public Task TestArrayInference4(TestMode mode)
=> TestAsync("""
using System;
class A
{
void Goo()
{
Func<int, int>[] x = new Func<int, int>[] { [|Bar()|] };
}
}
""", "global::System.Func<global::System.Int32, global::System.Int32>", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538993")]
public Task TestInsideLambda2(TestMode mode)
=> TestAsync("""
using System;
class C
{
void M()
{
Func<int,int> f = i => [|here|]
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestInsideLambdaNullableReturn(TestMode mode)
=> TestAsync("""
#nullable enable
using System;
class C
{
void M()
{
Func<int, string?> f = i => [|here|]
}
}
""", "global::System.String?", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/539813")]
public Task TestPointer1(TestMode mode)
=> TestAsync("""
class C
{
void M(int* i)
{
var q = i[[|Goo()|]];
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/539813")]
public Task TestDynamic1(TestMode mode)
=> TestAsync("""
class C
{
void M(dynamic i)
{
var q = i[[|Goo()|]];
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
public Task TestChecked1(TestMode mode)
=> TestAsync("""
class C
{
void M()
{
string q = checked([|Goo()|]);
}
}
""", "global::System.String", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/553584")]
public Task TestAwaitTaskOfT(TestMode mode)
=> TestAsync("""
using System.Threading.Tasks;
class C
{
void M()
{
int x = await [|Goo()|];
}
}
""", "global::System.Threading.Tasks.Task<global::System.Int32>", mode);
[Theory, CombinatorialData]
public Task TestAwaitTaskOfTNullableValue(TestMode mode)
=> TestAsync("""
#nullable enable
using System.Threading.Tasks;
class C
{
void M()
{
string? x = await [|Goo()|];
}
}
""", "global::System.Threading.Tasks.Task<global::System.String?>", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/553584")]
public Task TestAwaitTaskOfTaskOfT(TestMode mode)
=> TestAsync("""
using System.Threading.Tasks;
class C
{
void M()
{
Task<int> x = await [|Goo()|];
}
}
""", "global::System.Threading.Tasks.Task<global::System.Threading.Tasks.Task<global::System.Int32>>", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/553584")]
public Task TestAwaitTask(TestMode mode)
=> TestAsync("""
using System.Threading.Tasks;
class C
{
void M()
{
await [|Goo()|];
}
}
""", "global::System.Threading.Tasks.Task", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617622")]
public Task TestLockStatement(TestMode mode)
=> TestAsync("""
class C
{
void M()
{
lock([|Goo()|])
{
}
}
}
""", "global::System.Object", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617622")]
public Task TestAwaitExpressionInLockStatement(TestMode mode)
=> TestAsync("""
class C
{
async void M()
{
lock(await [|Goo()|])
{
}
}
}
""", "global::System.Threading.Tasks.Task<global::System.Object>", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/827897")]
public Task TestReturnFromAsyncTaskOfT(TestMode mode)
=> TestAsync("""
using System.Threading.Tasks;
class Program
{
async Task<int> M()
{
await Task.Delay(1);
return [|ab|]
}
}
""", "global::System.Int32", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/853840")]
public Task TestAttributeArguments1(TestMode mode)
=> TestAsync("""
[A([|dd|], ee, Y = ff)]
class AAttribute : System.Attribute
{
public int X;
public string Y;
public AAttribute(System.DayOfWeek a, double b)
{
}
}
""", "global::System.DayOfWeek", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/853840")]
public Task TestAttributeArguments2(TestMode mode)
=> TestAsync("""
[A(dd, [|ee|], Y = ff)]
class AAttribute : System.Attribute
{
public int X;
public string Y;
public AAttribute(System.DayOfWeek a, double b)
{
}
}
""", "global::System.Double", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/853840")]
public Task TestAttributeArguments3(TestMode mode)
=> TestAsync("""
[A(dd, ee, Y = [|ff|])]
class AAttribute : System.Attribute
{
public int X;
public string Y;
public AAttribute(System.DayOfWeek a, double b)
{
}
}
""", "global::System.String", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/757111")]
public Task TestReturnStatementWithinDelegateWithinAMethodCall(TestMode mode)
=> TestAsync("""
using System;
class Program
{
delegate string A(int i);
static void Main(string[] args)
{
B(delegate(int i) { return [|M()|]; });
}
private static void B(A a)
{
}
}
""", "global::System.String", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/994388")]
public Task TestCatchFilterClause(TestMode mode)
=> TestInMethodAsync("""
try
{ }
catch (Exception) if ([|M()|])
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/994388")]
public Task TestCatchFilterClause1(TestMode mode)
=> TestInMethodAsync("""
try
{ }
catch (Exception) if ([|M|])
}
""", "global::System.Boolean", mode);
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/994388")]
public Task TestCatchFilterClause2()
=> TestInMethodAsync("""
try
{ }
catch (Exception) if ([|M|].N)
}
""", "global::System.Object", TestMode.Node);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/643")]
public Task TestAwaitExpressionWithChainingMethod()
=> TestAsync("""
using System;
using System.Threading.Tasks;
class C
{
static async void T()
{
bool x = await [|M()|].ConfigureAwait(false);
}
}
""", "global::System.Threading.Tasks.Task<global::System.Boolean>", TestMode.Node);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/643")]
public Task TestAwaitExpressionWithChainingMethod2()
=> TestAsync("""
using System;
using System.Threading.Tasks;
class C
{
static async void T()
{
bool x = await [|M|].ContinueWith(a => { return true; }).ContinueWith(a => { return false; });
}
}
""", "global::System.Threading.Tasks.Task<global::System.Object>", TestMode.Node);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4233")]
public Task TestAwaitExpressionWithGenericMethod1()
=> TestAsync("""
using System.Threading.Tasks;
public class C
{
private async void M()
{
bool merged = await X([|Test()|]);
}
private async Task<T> X<T>(T t) { return t; }
}
""", "global::System.Boolean", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/4233")]
public Task TestAwaitExpressionWithGenericMethod2(TestMode mode)
=> TestAsync("""
using System.Threading.Tasks;
public class C
{
private async void M()
{
bool merged = await Task.Run(() => [|Test()|]);;
}
private async Task<T> X<T>(T t) { return t; }
}
""", "global::System.Boolean", mode);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/4483")]
public Task TestNullCoalescingOperator1(TestMode mode)
=> TestAsync("""
class C
{
void M()
{
object z = [|a|] ?? null;
}
}
""", mode == TestMode.Node ? "global::System.Object?" : "global::System.Object", mode);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/4483")]
public Task TestNullCoalescingOperator2(TestMode mode)
=> TestAsync("""
class C
{
void M()
{
object z = [|a|] ?? b ?? c;
}
}
""", mode == TestMode.Node ? "global::System.Object?" : "global::System.Object", mode);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/4483")]
public Task TestNullCoalescingOperator3(TestMode mode)
=> TestAsync("""
class C
{
void M()
{
object z = a ?? [|b|] ?? c;
}
}
""", mode == TestMode.Node ? "global::System.Object?" : "global::System.Object", mode);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/5126")]
public Task TestSelectLambda()
=> TestAsync("""
using System.Collections.Generic;
using System.Linq;
class C
{
void M(IEnumerable<string> args)
{
args = args.Select(a =>[||])
}
}
""", "global::System.Object", TestMode.Node);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/5126")]
public Task TestSelectLambda2()
=> TestAsync("""
using System.Collections.Generic;
using System.Linq;
class C
{
void M(IEnumerable<string> args)
{
args = args.Select(a =>[|b|])
}
}
""", "global::System.String", TestMode.Node);
[Theory, CombinatorialData]
[WorkItem("https://github.com/dotnet/roslyn/issues/1903")]
public Task TestSelectLambda3(TestMode mode)
=> TestAsync("""
using System.Collections.Generic;
using System.Linq;
class A { }
class B { }
class C
{
IEnumerable<B> GetB(IEnumerable<A> a)
{
return a.Select(i => [|Goo(i)|]);
}
}
""", "global::B", mode);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/6765")]
public Task TestDefaultStatement1()
=> TestAsync("""
class C
{
static void Main(string[] args)
{
System.ConsoleModifiers c = default([||])
}
}
""", "global::System.ConsoleModifiers", TestMode.Position);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/6765")]
public Task TestDefaultStatement2()
=> TestAsync("""
class C
{
static void Goo(System.ConsoleModifiers arg)
{
Goo(default([||])
}
}
""", "global::System.ConsoleModifiers", TestMode.Position);
[Fact]
public Task TestWhereCall()
=> TestAsync("""
using System.Collections.Generic;
class C
{
void Goo()
{
[|ints|].Where(i => i > 10);
}
}
""", "global::System.Collections.Generic.IEnumerable<global::System.Int32>", TestMode.Node);
[Fact]
public Task TestWhereCall2()
=> TestAsync("""
using System.Collections.Generic;
class C
{
void Goo()
{
[|ints|].Where(i => null);
}
}
""", "global::System.Collections.Generic.IEnumerable<global::System.Object>", TestMode.Node);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/12755")]
public Task TestObjectCreationBeforeArrayIndexing()
=> TestAsync("""
using System;
class C
{
void M()
{
int[] array;
C p = new [||]
array[4] = 4;
}
}
""", "global::C", TestMode.Position);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25305")]
[WorkItem("https://github.com/dotnet/roslyn/issues/15468")]
public Task TestDeconstruction()
=> TestInMethodAsync(
@"[|(int i, _)|] =", "(global::System.Int32 i, global::System.Object _)", TestMode.Node);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25305")]
[WorkItem("https://github.com/dotnet/roslyn/issues/15468")]
public Task TestDeconstruction2()
=> TestInMethodAsync(
@"(int i, _) = [||]", "(global::System.Int32 i, global::System.Object _)", TestMode.Position);
[Fact]
public Task TestDeconstructionWithNullableElement()
=> TestInMethodAsync(
@"[|(string? s, _)|] =", "(global::System.String? s, global::System.Object _)", TestMode.Node);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/13402")]
public Task TestObjectCreationBeforeBlock()
=> TestAsync("""
class Program
{
static void Main(string[] args)
{
Program p = new [||]
{ }
}
}
""", "global::Program", TestMode.Position);
[Theory, CombinatorialData]
public Task TestInferringThroughGenericFunctionWithNullableReturn(TestMode mode)
=> TestAsync("""
#nullable enable
class Program
{
static void Main(string[] args)
{
string? s = Identity([|input|]);
}
static T Identity<T>(T value) { return value; }
}
""", "global::System.String?", mode);
[Fact]
public Task TestInferringThroughGenericFunctionMissingArgument()
=> TestAsync("""
class Program
{
static void Main(string[] args)
{
string s = Identity([||]);
}
static T Identity<T>(T value) { return value; }
}
""", "global::System.String", TestMode.Position);
[Theory, CombinatorialData]
public Task TestInferringThroughGenericFunctionTooManyArguments(TestMode mode)
=> TestAsync("""
class Program
{
static void Main(string[] args)
{
string s = Identity("test", [||]);
}
static T Identity<T>(T value) { return value; }
}
""", "global::System.Object", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/14277"), CombinatorialData]
public Task TestValueInNestedTuple1(TestMode mode)
=> TestInMethodAsync(
@"(int, (string, bool)) x = ([|Goo()|], ("""", true));", "global::System.Int32", mode);
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/14277"), CombinatorialData]
public Task TestValueInNestedTuple2(TestMode mode)
=> TestInMethodAsync(
@"(int, (string, bool)) x = (1, ("""", [|Goo()|]));", "global::System.Boolean", mode);
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/14277")]
public Task TestValueInNestedTuple3()
=> TestInMethodAsync(
@"(int, string) x = (1, [||]);", "global::System.String", TestMode.Position);
[Theory, CombinatorialData]
public Task TestInferringInEnumHasFlags(TestMode mode)
=> TestAsync("""
using System.IO;
class Program
{
static void Main(string[] args)
{
FileInfo f;
f.Attributes.HasFlag([|flag|]);
}
}
""", "global::System.IO.FileAttributes", mode);
[Theory]
[InlineData("")]
[InlineData("Re")]
[InlineData("Col")]
[InlineData("Color.Green or", false)]
[InlineData("Color.Green or ")]
[InlineData("(Color.Green or ")] // start of: is (Color.Red or Color.Green) and not Color.Blue
[InlineData("Color.Green or Re")]
[InlineData("Color.Green or Color.Red or ")]
[InlineData("Color.Green orWrittenWrong ", false)]
[InlineData("not ")]
[InlineData("not Re")]
public async Task TestEnumInPatterns_Is_ConstUnaryAndBinaryPattern(string isPattern, bool shouldInferColor = true)
{
var expectedType = shouldInferColor
? "global::C.Color"
: "global::System.Object";
await TestAsync($$"""
class C
{
public enum Color
{
Red,
Green,
}
public void M(Color c)
{
var isRed = c is {{isPattern}}[||];
}
}
""", expectedType, TestMode.Position);
}
[Theory]
[InlineData("")]
[InlineData("Col")]
[InlineData("Color.R")]
[InlineData("Red")]
[InlineData("Color.Green or ")]
[InlineData("Color.Green or Re")]
[InlineData("not ")]
[InlineData("not Re")]
public Task TestEnumInPatterns_Is_PropertyPattern(string partialWritten)
=> TestAsync($$"""
public enum Color
{
Red,
Green,
}
class C
{
public Color Color { get; }
public void M()
{
var isRed = this is { Color: {{partialWritten}}[||]
}
}
""", "global::Color", TestMode.Position);
[Fact]
public Task TestEnumInPatterns_SwitchStatement_PropertyPattern()
=> TestAsync("""
public enum Color
{
Red,
Green,
}
class C
{
public Color Color { get; }
public void M()
{
switch (this)
{
case { Color: [||]
}
}
""", "global::Color", TestMode.Position);
[Fact]
public Task TestEnumInPatterns_SwitchExpression_PropertyPattern()
=> TestAsync("""
public enum Color
{
Red,
Green,
}
class C
{
public Color Color { get; }
public void M()
{
var isRed = this switch
{
{ Color: [||]
}
}
""", "global::Color", TestMode.Position);
[Fact]
public Task TestEnumInPatterns_SwitchStatement_ExtendedPropertyPattern()
=> TestAsync("""
public enum Color
{
Red,
Green,
}
class C
{
public C AnotherC { get; }
public Color Color { get; }
public void M()
{
switch (this)
{
case { AnotherC.Color: [||]
}
}
""", "global::Color", TestMode.Position);
[Fact]
public Task TestEnumInPatterns_SwitchStatement_ExtendedPropertyPattern_Field()
=> TestAsync("""
public enum Color
{
Red,
Green,
}
class C
{
public C AnotherC { get; }
public Color Color;
public void M()
{
switch (this)
{
case { AnotherC.Color: [||]
}
}
""", "global::Color", TestMode.Position);
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/70803")]
public Task TestArgumentToBaseRecordPrimaryConstructor()
=> TestAsync("""
class Base(int Alice, int Bob);
class Derived(int Other) : Base([||]
""", "global::System.Int32", TestMode.Position);
}
|