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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.CSharp.UnitTests.Snippets;
[Trait(Traits.Feature, Traits.Features.Snippets)]
public sealed class CSharpDoSnippetProviderTests : AbstractCSharpSnippetProviderTests
{
protected override string SnippetIdentifier => "do";
[Fact]
public async Task InsertDoSnippetInMethodTest()
{
await VerifySnippetAsync("""
class Program
{
public void Method()
{
$$
}
}
""", """
class Program
{
public void Method()
{
do
{
$$
}
while ({|0:true|});
}
}
""");
}
[Fact]
public async Task InsertDoSnippetInGlobalContextTest()
{
await VerifySnippetAsync("""
$$
""", """
do
{
$$
}
while ({|0:true|});
""");
}
[Fact]
public async Task NoDoSnippetInBlockNamespaceTest()
{
await VerifySnippetIsAbsentAsync("""
namespace Namespace
{
$$
}
""");
}
[Fact]
public async Task NoDoSnippetInFileScopedNamespaceTest()
{
await VerifySnippetIsAbsentAsync("""
namespace Namespace;
$$
""");
}
[Fact]
public async Task InsertDoSnippetInConstructorTest()
{
await VerifySnippetAsync("""
class Program
{
public Program()
{
var x = 5;
$$
}
}
""", """
class Program
{
public Program()
{
var x = 5;
do
{
$$
}
while ({|0:true|});
}
}
""");
}
[Fact]
public async Task InsertDoSnippetInLocalFunctionTest()
{
await VerifySnippetAsync("""
class Program
{
public void Method()
{
var x = 5;
void LocalMethod()
{
$$
}
}
}
""", """
class Program
{
public void Method()
{
var x = 5;
void LocalMethod()
{
do
{
$$
}
while ({|0:true|});
}
}
}
""");
}
[Fact]
public async Task InsertDoSnippetInAnonymousFunctionTest()
{
await VerifySnippetAsync("""
public delegate void Print(int value);
static void Main(string[] args)
{
Print print = delegate(int val)
{
$$
};
}
""", """
public delegate void Print(int value);
static void Main(string[] args)
{
Print print = delegate(int val)
{
do
{
$$
}
while ({|0:true|});
};
}
""");
}
[Fact]
public async Task InsertDoSnippetInParenthesizedLambdaExpressionTest()
{
await VerifySnippetAsync("""
using System;
Func<int, int, bool> testForEquality = (x, y) =>
{
$$
return x == y;
};
""", """
using System;
Func<int, int, bool> testForEquality = (x, y) =>
{
do
{
$$
}
while ({|0:true|});
return x == y;
};
""");
}
[Fact]
public async Task NoDoSnippetInSwitchExpression()
{
await VerifySnippetIsAbsentAsync("""
class Program
{
public void Method()
{
var operation = 2;
var result = operation switch
{
$$
1 => "Case 1",
2 => "Case 2",
3 => "Case 3",
4 => "Case 4",
};
}
}
""");
}
[Fact]
public async Task NoDoSnippetInSingleLambdaExpression()
{
await VerifySnippetIsAbsentAsync("""
using System;
class Program
{
public void Method()
{
Func<int, int> f = x => $$;
}
}
""");
}
[Fact]
public async Task NoDoSnippetInStringTest()
{
await VerifySnippetIsAbsentAsync("""
class Program
{
public void Method()
{
var str = "$$";
}
}
""");
}
[Fact]
public async Task NoDoSnippetInConstructorArgumentsTest()
{
await VerifySnippetIsAbsentAsync("""
class Program
{
public void Method()
{
var test = new Test($$);
}
}
class Test
{
public Test(string val)
{
}
}
""");
}
[Fact]
public async Task NoDoSnippetInParameterListTest()
{
await VerifySnippetIsAbsentAsync("""
class Program
{
public void Method(int x, $$)
{
}
}
""");
}
[Fact]
public async Task NoDoSnippetInRecordDeclarationTest()
{
await VerifySnippetIsAbsentAsync("""
public record Person
{
$$
public string FirstName { get; init; }
public string LastName { get; init; }
};
""");
}
[Fact]
public async Task NoDoSnippetInVariableDeclarationTest()
{
await VerifySnippetIsAbsentAsync("""
class Program
{
public void Method()
{
var x = $$
}
}
""");
}
[Fact]
public async Task InsertInlineDoSnippetForCorrectTypeTest()
{
await VerifySnippetAsync("""
class Program
{
void M(bool arg)
{
arg.$$
}
}
""", """
class Program
{
void M(bool arg)
{
do
{
$$
}
while (arg);
}
}
""");
}
[Fact]
public async Task NoInlineDoSnippetForIncorrectTypeTest()
{
await VerifySnippetIsAbsentAsync("""
class Program
{
void M(int arg)
{
arg.$$
}
}
""");
}
[Fact]
public async Task NoInlineDoSnippetWhenNotDirectlyExpressionStatementTest()
{
await VerifySnippetIsAbsentAsync("""
class Program
{
void M(bool arg)
{
System.Console.WriteLine(arg.$$);
}
}
""");
}
[Theory]
[InlineData("// comment")]
[InlineData("/* comment */")]
[InlineData("#region test")]
public async Task CorrectlyDealWithLeadingTriviaInInlineSnippetInMethodTest1(string trivia)
{
await VerifySnippetAsync($$"""
class Program
{
void M(bool arg)
{
{{trivia}}
arg.$$
}
}
""", $$"""
class Program
{
void M(bool arg)
{
{{trivia}}
do
{
$$
}
while (arg);
}
}
""");
}
[Theory]
[InlineData("#if true")]
[InlineData("#pragma warning disable CS0108")]
[InlineData("#nullable enable")]
public async Task CorrectlyDealWithLeadingTriviaInInlineSnippetInMethodTest2(string trivia)
{
await VerifySnippetAsync($$"""
class Program
{
void M(bool arg)
{
{{trivia}}
arg.$$
}
}
""", $$"""
class Program
{
void M(bool arg)
{
{{trivia}}
do
{
$$
}
while (arg);
}
}
""");
}
[Theory]
[InlineData("// comment")]
[InlineData("/* comment */")]
public async Task CorrectlyDealWithLeadingTriviaInInlineSnippetInGlobalStatementTest1(string trivia)
{
await VerifySnippetAsync($"""
{trivia}
true.$$
""", $$"""
{{trivia}}
do
{
$$
}
while (true);
""");
}
[Theory]
[InlineData("#region test")]
[InlineData("#if true")]
[InlineData("#pragma warning disable CS0108")]
[InlineData("#nullable enable")]
public async Task CorrectlyDealWithLeadingTriviaInInlineSnippetInGlobalStatementTest2(string trivia)
{
await VerifySnippetAsync($"""
{trivia}
true.$$
""", $$"""
{{trivia}}
do
{
$$
}
while (true);
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/69598")]
public async Task InsertInlineSnippetWhenDottingBeforeContextualKeywordTest1()
{
await VerifySnippetAsync("""
class C
{
void M(bool flag)
{
flag.$$
var a = 0;
}
}
""", """
class C
{
void M(bool flag)
{
do
{
$$
}
while (flag);
var a = 0;
}
}
""");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/69598")]
public async Task InsertInlineSnippetWhenDottingBeforeContextualKeywordTest2()
{
await VerifySnippetAsync("""
class C
{
async void M(bool flag, Task t)
{
flag.$$
await t;
}
}
""", """
class C
{
async void M(bool flag, Task t)
{
do
{
$$
}
while (flag);
await t;
}
}
""");
}
[Theory, WorkItem("https://github.com/dotnet/roslyn/issues/69598")]
[InlineData("Task")]
[InlineData("Task<int>")]
[InlineData("System.Threading.Tasks.Task<int>")]
public async Task InsertInlineSnippetWhenDottingBeforeNameSyntaxTest(string nameSyntax)
{
await VerifySnippetAsync($$"""
using System.Threading.Tasks;
class C
{
void M(bool flag)
{
flag.$$
{{nameSyntax}} t = null;
}
}
""", $$"""
using System.Threading.Tasks;
class C
{
void M(bool flag)
{
do
{
$$
}
while (flag);
{{nameSyntax}} t = null;
}
}
""");
}
[Fact]
public async Task InsertInlineDoSnippetWhenDottingBeforeMemberAccessExpressionOnTheNextLineTest()
{
await VerifySnippetAsync("""
using System;
class C
{
void M(bool flag)
{
flag.$$
Console.WriteLine();
}
}
""", """
using System;
class C
{
void M(bool flag)
{
do
{
$$
}
while (flag);
Console.WriteLine();
}
}
""");
}
[Fact]
public async Task NoInlineDoSnippetWhenDottingBeforeMemberAccessExpressionOnTheSameLineTest()
{
await VerifySnippetIsAbsentAsync("""
class C
{
void M(bool flag)
{
flag.$$ToString();
}
}
""");
}
[Fact]
public async Task NoInlineDoSnippetWhenDottingBeforeContextualKeywordOnTheSameLineTest()
{
await VerifySnippetIsAbsentAsync("""
class C
{
void M(bool flag)
{
flag.$$var a = 0;
}
}
""");
}
[Fact]
public async Task NoInlineDoSnippetForTypeItselfTest()
{
await VerifySnippetIsAbsentAsync("""
class C
{
void M()
{
bool.$$
}
}
""");
}
[Fact]
public async Task NoInlineDoSnippetForTypeItselfTest_Parenthesized()
{
await VerifySnippetIsAbsentAsync("""
class C
{
void M()
{
(bool).$$
}
}
""");
}
[Fact]
public async Task NoInlineDoSnippetForTypeItselfTest_BeforeContextualKeyword()
{
await VerifySnippetIsAbsentAsync("""
using System.Threading.Tasks;
class C
{
async void M()
{
bool.$$
await Task.Delay(10);
}
}
""");
}
}
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