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// 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.
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Recommendations;
[Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
public sealed class FromKeywordRecommenderTests : KeywordRecommenderTests
{
[Fact]
public Task TestAtRoot_Interactive()
=> VerifyKeywordAsync(SourceCodeKind.Script,
@"$$");
[Fact]
public Task TestAfterClass_Interactive()
=> VerifyKeywordAsync(SourceCodeKind.Script,
"""
class C { }
$$
""");
[Fact]
public Task TestAfterGlobalStatement()
=> VerifyKeywordAsync(
"""
System.Console.WriteLine();
$$
""");
[Fact]
public Task TestAfterGlobalVariableDeclaration_Interactive()
=> VerifyKeywordAsync(SourceCodeKind.Script,
"""
int i = 0;
$$
""");
[Fact]
public Task TestNotInUsingAlias()
=> VerifyAbsenceAsync(
@"using Goo = $$");
[Fact]
public Task TestNotInGlobalUsingAlias()
=> VerifyAbsenceAsync(
@"global using Goo = $$");
[Fact]
public Task TestNotInEmptyStatement()
=> VerifyAbsenceAsync(AddInsideMethod(
@"$$"));
[Fact]
public Task TestInEmptySpace()
=> VerifyKeywordAsync(AddInsideMethod(
@"var v = $$"));
[Fact]
public Task TestAfterIdentifier()
=> VerifyKeywordAsync(AddInsideMethod(
@"var v = a$$"));
[Fact]
public Task TestNestedInQueryExpression()
=> VerifyKeywordAsync(AddInsideMethod(
@"var q = from x in $$"));
[Fact]
public Task TestAfterFrom()
=> VerifyKeywordAsync(AddInsideMethod(
"""
var v = from x in y
$$
"""));
[Fact]
public Task TestAfterPreviousClause()
=> VerifyKeywordAsync(AddInsideMethod(
"""
var v = from x in y
where x > y
$$
"""));
[Fact]
public Task TestAfterPreviousContinuationClause()
=> VerifyKeywordAsync(AddInsideMethod(
"""
var v = from x in y
group x by y into g
$$
"""));
[Fact]
public Task TestNotAfterFrom1()
=> VerifyAbsenceAsync(AddInsideMethod(
@"var v = from $$"));
[Fact]
public Task TestNotAfterFrom2()
=> VerifyAbsenceAsync(AddInsideMethod(
"""
var v = from a in y
from $$
"""));
[Fact]
public Task TestBetweenClauses()
=> VerifyKeywordAsync(AddInsideMethod(
"""
var v = from x in y
$$
from z in w
"""));
[Fact]
public Task TestContinueInSelect()
=> VerifyKeywordAsync(AddInsideMethod(
"""
var v = from x in y
select $$
"""));
[Fact]
public Task TestBetweenTokens()
=> VerifyKeywordAsync(AddInsideMethod(
@"var v =$$;"));
[Fact]
public Task TestNotInDeclaration()
=> VerifyAbsenceAsync(AddInsideMethod(
@"int $$"));
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538264")]
public Task TestNotInEnumMemberInitializer1()
=> VerifyAbsenceAsync(
"""
enum E {
a = $$
}
""");
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538264")]
public Task TestNotInConstMemberInitializer1()
=> VerifyAbsenceAsync(
"""
class E {
const int a = $$
}
""");
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538264")]
public Task TestInMemberInitializer1()
=> VerifyKeywordAsync(
"""
class E {
int a = $$
}
""");
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
public Task TestNotInTypeOf()
=> VerifyAbsenceAsync(AddInsideMethod(
@"typeof($$"));
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
public Task TestNotInDefault()
=> VerifyAbsenceAsync(AddInsideMethod(
@"default($$"));
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
public Task TestNotInSizeOf()
=> VerifyAbsenceAsync(AddInsideMethod(
@"sizeof($$"));
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544219")]
public Task TestNotInObjectInitializerMemberContext()
=> VerifyAbsenceAsync("""
class C
{
public int x, y;
void M()
{
var c = new C { x = 2, y = 3, $$
""");
[Fact]
public async Task TestNotAfterOutInArgument()
{
var experimentalFeatures = new System.Collections.Generic.Dictionary<string, string>(); // no experimental features to enable
await VerifyAbsenceAsync("""
class C
{
void M(out int x) { x = 42; }
void N()
{
M(out var $$
""", options: Options.Regular.WithFeatures(experimentalFeatures), scriptOptions: Options.Script.WithFeatures(experimentalFeatures));
}
#region Collection expressions
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_BeforeFirstElementToVar()
=> VerifyKeywordAsync(AddInsideMethod(
"""
var x = [$$
"""));
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_BeforeFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [$$
}
""");
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_AfterFirstElementToVar()
=> VerifyKeywordAsync(AddInsideMethod(
"""
var x = [new object(), $$
"""));
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_AfterFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, $$
}
""");
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_SpreadBeforeFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [.. $$
}
""");
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_SpreadAfterFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, .. $$
}
""");
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_ParenAtFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [($$
}
""");
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_ParenAfterFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, ($$
}
""");
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_ParenSpreadAtFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [.. ($$
}
""");
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/70677")]
public Task TestInCollectionExpressions_ParenSpreadAfterFirstElementToReturn()
=> VerifyKeywordAsync(
"""
class C
{
IEnumerable<string> M() => [string.Empty, .. ($$
}
""");
#endregion
}
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