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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.
#nullable disable
using System;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Completion;
using Microsoft.CodeAnalysis.CSharp.Completion.Providers;
using Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.AsyncCompletion;
using Microsoft.CodeAnalysis.Editor.UnitTests.Workspaces;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Completion.CompletionProviders
{
[Trait(Traits.Feature, Traits.Features.Completion)]
public class ObjectInitializerCompletionProviderTests : AbstractCSharpCompletionProviderTests
{
internal override Type GetCompletionProviderType()
=> typeof(ObjectAndWithInitializerCompletionProvider);
[Fact]
public async Task NothingToInitialize()
{
var markup = @"
class C { }
class D
{
void goo()
{
C goo = new C { $$
}
}";
await VerifyNoItemsExistAsync(markup);
await VerifyExclusiveAsync(markup, true);
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/46397")]
public async Task ImplicitObjectCreation_NothingToInitialize()
{
var markup = @"
class C { }
class D
{
void goo()
{
C goo = new() { $$
}
}";
await VerifyNoItemsExistAsync(markup);
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task OneItem1()
{
var markup = @"
class C { public int value {set; get; }}
class D
{
void goo()
{
C goo = new C { v$$
}
}";
await VerifyItemExistsAsync(markup, "value");
await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
await VerifyExclusiveAsync(markup, true);
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/46397")]
public async Task ImplicitObjectCreation_OneItem1()
{
var markup = @"
class C { public int value {set; get; }}
class D
{
void goo()
{
C goo = new() { v$$
}
}";
await VerifyItemExistsAsync(markup, "value");
await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task ImplicitObjectCreation_NullableStruct_OneItem1()
{
var markup = @"
struct S { public int value {set; get; }}
class D
{
void goo()
{
S? goo = new() { v$$
}
}";
await VerifyItemExistsAsync(markup, "value");
await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task ShowWithEqualsSign()
{
var markup = @"
class C { public int value {set; get; }}
class D
{
void goo()
{
C goo = new C { v$$=
}
}";
await VerifyItemExistsAsync(markup, "value");
await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task OneItem2()
{
var markup = @"
class C
{
public int value {set; get; }
void goo()
{
C goo = new C { v$$
}
}";
await VerifyItemExistsAsync(markup, "value");
await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task FieldAndProperty()
{
var markup = @"
class C
{
public int value {set; get; }
public int otherValue;
}
class D
{
void goo()
{
C goo = new C { v$$
}
}";
await VerifyItemExistsAsync(markup, "value");
await VerifyItemExistsAsync(markup, "otherValue");
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task HidePreviouslyTyped()
{
var markup = @"
class C
{
public int value {set; get; }
public int otherValue;
}
class D
{
void goo()
{
C goo = new C { value = 3, o$$
}
}";
await VerifyItemIsAbsentAsync(markup, "value");
await VerifyExclusiveAsync(markup, true);
await VerifyItemExistsAsync(markup, "otherValue");
}
[Fact]
public async Task NotInEqualsValue()
{
var markup = @"
class C
{
public int value {set; get; }
public int otherValue;
}
class D
{
void goo()
{
C goo = new C { value = v$$
}
}";
await VerifyNoItemsExistAsync(markup);
}
[Fact]
public async Task NothingLeftToShow()
{
var markup = @"
class C
{
public int value {set; get; }
public int otherValue;
}
class D
{
void goo()
{
C goo = new C { value = 3, otherValue = 4, $$
}
}";
await VerifyNoItemsExistAsync(markup);
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task NestedObjectInitializers()
{
var markup = @"
class C
{
public int value {set; get; }
public int otherValue;
}
class D
{
public C myValue {set; get;}
}
class E
{
void goo()
{
D bar = new D { myValue = new C { $$
}
}";
await VerifyItemIsAbsentAsync(markup, "myValue");
await VerifyItemExistsAsync(markup, "value");
await VerifyItemExistsAsync(markup, "otherValue");
await VerifyExclusiveAsync(markup, true);
}
[Fact]
public async Task NotExclusive1()
{
var markup = @"using System.Collections.Generic;
class C : IEnumerable<int>
{
public void Add(int a) { }
public int value {set; get; }
public int otherValue;
}
class D
{
void goo()
{
C bar = new C { v$$
}
}";
await VerifyExclusiveAsync(markup, false);
}
[Fact]
public async Task NotExclusive2()
{
var markup = @"using System.Collections;
class C : IEnumerable
{
public void Add(object a) { }
public int value {set; get; }
public int otherValue;
}
class D
{
void goo()
{
C bar = new C { v$$
}
}";
await VerifyExclusiveAsync(markup, false);
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544242")]
public async Task NotInArgumentList()
{
var markup = @"class C
{
void M(int i, int j)
{
M(i, j$$
}
}
";
await VerifyNoItemsExistAsync(markup);
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/530075")]
public async Task NotInArgumentList2()
{
var markup = @"class C
{
public int A;
void M(int i, int j)
{
new C(1, $$
}
}
";
await VerifyNoItemsExistAsync(markup);
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544289")]
public async Task DerivedMembers()
{
var markup = @"using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Base
{
public int GooBase;
private int BasePrivate { get; set; }
public int BasePublic{ get; set; }
}
class Derived : Base
{
public int GooDerived;
}
class Program
{
static void Main(string[] args)
{
var x = new Derived { F$$
}
}
}
";
await VerifyItemExistsAsync(markup, "GooBase");
await VerifyItemExistsAsync(markup, "GooDerived");
await VerifyItemExistsAsync(markup, "BasePublic");
await VerifyItemIsAbsentAsync(markup, "BasePrivate");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544242")]
public async Task NotInCollectionInitializer()
{
var markup = @"using System.Collections.Generic;
class C
{
void goo()
{
var a = new List<int> {0, $$
}
}
";
await VerifyNoItemsExistAsync(markup);
}
[Fact]
public async Task InitializeDerivedType()
{
var markup = @"using System.Collections.Generic;
class B {}
class D : B
{
public int goo;
}
class C
{
void stuff()
{
B a = new D { $$
}
}
";
await VerifyItemExistsAsync(markup, "goo");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544550")]
public async Task ReadOnlyPropertiesShouldNotBePresent()
{
var markup = @"using System.Collections.Generic;
class C
{
void goo()
{
var a = new List<int> {$$
}
}
";
await VerifyItemExistsAsync(markup, "Capacity");
await VerifyItemIsAbsentAsync(markup, "Count");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544550")]
public async Task IndexersShouldNotBePresent()
{
var markup = @"using System.Collections.Generic;
class C
{
void goo()
{
var a = new List<int> {$$
}
}
";
await VerifyItemExistsAsync(markup, "Capacity");
await VerifyItemIsAbsentAsync(markup, "this[]");
}
[Fact]
public async Task ReadOnlyPropertiesThatFollowTheCollectionPatternShouldBePresent()
{
var markup = @"using System.Collections.Generic;
class C
{
public readonly int goo;
public readonly List<int> bar;
void M()
{
new C() { $$
}
}
";
await VerifyItemIsAbsentAsync(markup, "goo");
await VerifyItemExistsAsync(markup, "bar");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544607")]
public async Task DoNotIncludeStaticMember()
{
var markup = @"
class Goo
{
public static int Gibberish { get; set; }
}
class Bar
{
void goo()
{
var c = new Goo { $$
}
}";
await VerifyItemIsAbsentAsync(markup, "Gibberish");
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
public async Task EditorBrowsable_PropertyInObjectCreationAlways()
{
var markup = @"
public class C
{
public void M()
{
var x = new Goo { $$
}
}";
var referencedCode = @"
public class Goo
{
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
public string Prop { get; set; }
}";
await VerifyItemInEditorBrowsableContextsAsync(
markup: markup,
referencedCode: referencedCode,
item: "Prop",
expectedSymbolsSameSolution: 1,
expectedSymbolsMetadataReference: 1,
sourceLanguage: LanguageNames.CSharp,
referencedLanguage: LanguageNames.CSharp);
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
public async Task EditorBrowsable_PropertyInObjectCreationNever()
{
var markup = @"
public class C
{
public void M()
{
var x = new Goo { $$
}
}";
var referencedCode = @"
public class Goo
{
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
public string Prop { get; set; }
}";
await VerifyItemInEditorBrowsableContextsAsync(
markup: markup,
referencedCode: referencedCode,
item: "Prop",
expectedSymbolsSameSolution: 1,
expectedSymbolsMetadataReference: 0,
sourceLanguage: LanguageNames.CSharp,
referencedLanguage: LanguageNames.CSharp);
}
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
public async Task EditorBrowsable_PropertyInObjectCreationAdvanced()
{
var markup = @"
public class C
{
public void M()
{
var x = new Goo { $$
}
}";
var referencedCode = @"
public class Goo
{
[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
public string Prop { get; set; }
}";
HideAdvancedMembers = true;
await VerifyItemInEditorBrowsableContextsAsync(
markup: markup,
referencedCode: referencedCode,
item: "Prop",
expectedSymbolsSameSolution: 1,
expectedSymbolsMetadataReference: 0,
sourceLanguage: LanguageNames.CSharp,
referencedLanguage: LanguageNames.CSharp);
HideAdvancedMembers = false;
await VerifyItemInEditorBrowsableContextsAsync(
markup: markup,
referencedCode: referencedCode,
item: "Prop",
expectedSymbolsSameSolution: 1,
expectedSymbolsMetadataReference: 1,
sourceLanguage: LanguageNames.CSharp,
referencedLanguage: LanguageNames.CSharp);
}
[Fact]
public async Task TestCommitCharacter()
{
const string markup = @"
class C { public int value {set; get; }}
class D
{
void goo()
{
C goo = new C { v$$
}
}";
await VerifyCommonCommitCharactersAsync(markup, textTypedSoFar: "v");
}
[Fact]
public async Task TestEnter()
{
const string markup = @"
class C { public int value {set; get; }}
class D
{
void goo()
{
C goo = new C { v$$
}
}";
using var workspace = TestWorkspace.CreateCSharp(markup, composition: GetComposition());
var hostDocument = workspace.Documents.Single();
var position = hostDocument.CursorPosition.Value;
var document = workspace.CurrentSolution.GetDocument(hostDocument.Id);
var triggerInfo = CompletionTrigger.CreateInsertionTrigger('a');
var service = GetCompletionService(document.Project);
var completionList = await GetCompletionListAsync(service, document, position, triggerInfo);
var item = completionList.ItemsList.First();
Assert.False(CommitManager.SendEnterThroughToEditor(service.GetRules(CompletionOptions.Default), item, string.Empty), "Expected false from SendEnterThroughToEditor()");
}
[Fact]
public void TestTrigger()
=> TestCommonIsTextualTriggerCharacter();
[Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/530828")]
public async Task DoNotIncludeIndexedPropertyWithNonOptionalParameter()
{
var markup = @"C c01 = new C() {$$ }";
var referencedCode = @"Public Class C
Public Property IndexProp(ByVal p1 As Integer) As String
Get
Return Nothing
End Get
Set(ByVal value As String)
End Set
End Property
End Class";
HideAdvancedMembers = false;
await VerifyItemInEditorBrowsableContextsAsync(
markup: markup,
referencedCode: referencedCode,
item: "IndexProp",
expectedSymbolsSameSolution: 0,
expectedSymbolsMetadataReference: 0,
sourceLanguage: LanguageNames.CSharp,
referencedLanguage: LanguageNames.VisualBasic);
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
public async Task CollectionInitializerPatternFromBaseType()
{
var markup = @"
using System;
using System.Collections;
public class SupportsAdd : IEnumerable
{
public void Add(int x) { }
public IEnumerator GetEnumerator()
{
throw new NotImplementedException();
}
IEnumerator IEnumerable.GetEnumerator()
{
throw new NotImplementedException();
}
}
class SupportsAddDerived : SupportsAdd { }
class Container
{
public SupportsAdd S { get; }
public SupportsAddDerived D { get; }
}
class Program
{
static void Main(string[] args)
{
var y = new Container { $$ };
}
}";
await VerifyItemExistsAsync(markup, "S");
await VerifyItemExistsAsync(markup, "D");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
public async Task CollectionInitializerPatternFromBaseTypeInaccessible()
{
var markup = @"
using System;
using System.Collections;
public class SupportsAdd : IEnumerable
{
protected void Add(int x) { }
public IEnumerator GetEnumerator()
{
throw new NotImplementedException();
}
IEnumerator IEnumerable.GetEnumerator()
{
throw new NotImplementedException();
}
}
class SupportsAddDerived : SupportsAdd { }
class Container
{
public SupportsAdd S { get; }
public SupportsAddDerived D { get; }
}
class Program
{
static void Main(string[] args)
{
var y = new Container { $$ };
}
}";
// Can't use S={3}, but the object initializer syntax S={} is still valid
await VerifyItemExistsAsync(markup, "S");
await VerifyItemExistsAsync(markup, "D");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/13158")]
public async Task CollectionInitializerForInterfaceType1()
{
var markup = @"
using System.Collections.Generic;
public class Goo
{
public IList<int> Items { get; } = new List<int>();
public int Bar;
}
class Program
{
static void Main(string[] args)
{
var y = new Goo { $$ };
}
}";
await VerifyItemExistsAsync(markup, "Items");
await VerifyItemExistsAsync(markup, "Bar");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/13158")]
public async Task CollectionInitializerForInterfaceType2()
{
var markup = @"
using System.Collections.Generic;
public interface ICustomCollection<T> : ICollection<T> { }
public class Goo
{
public ICustomCollection<int> Items { get; } = new List<int>();
public int Bar;
}
class Program
{
static void Main(string[] args)
{
var y = new Goo { $$ };
}
}";
await VerifyItemExistsAsync(markup, "Items");
await VerifyItemExistsAsync(markup, "Bar");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
public async Task CollectionInitializerPatternFromBaseTypeAccessible()
{
var markup = @"
using System;
using System.Collections;
public class SupportsAdd : IEnumerable
{
protected void Add(int x) { }
public IEnumerator GetEnumerator()
{
throw new NotImplementedException();
}
IEnumerator IEnumerable.GetEnumerator()
{
throw new NotImplementedException();
}
}
class SupportsAddDerived : SupportsAdd
{
class Container
{
public SupportsAdd S { get; }
public SupportsAddDerived D { get; }
}
static void Main(string[] args)
{
var y = new Container { $$ };
}
}";
await VerifyItemExistsAsync(markup, "S");
await VerifyItemExistsAsync(markup, "D");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
public async Task ObjectInitializerOfGenericTypeConstructedWithInaccessibleType()
{
var markup = @"
class Generic<T>
{
public string Value { get; set; }
}
class Program
{
private class InaccessibleToGeneric
{
}
static void Main(string[] args)
{
var g = new Generic<InaccessibleToGeneric> { $$ }
}
}";
await VerifyItemExistsAsync(markup, "Value");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
public async Task ObjectInitializerOfGenericTypeСonstraint1()
{
var markup = @"
internal interface IExample
{
string A { get; set; }
string B { get; set; }
}
internal class Example
{
public static T Create<T>()
where T : IExample, new()
{
return new T
{
$$
};
}
}";
await VerifyItemExistsAsync(markup, "A");
await VerifyItemExistsAsync(markup, "B");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
public async Task ObjectInitializerOfGenericTypeСonstraint2()
{
var markup = @"
internal class Example
{
public static T Create<T>()
where T : new()
{
return new T
{
$$
};
}
}";
await VerifyNoItemsExistAsync(markup);
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
public async Task ObjectInitializerOfGenericTypeСonstraint3()
{
var markup = @"
internal class Example
{
public static T Create<T>()
where T : System.Delegate, new()
{
return new T
{
$$
};
}
}";
await VerifyItemExistsAsync(markup, "Target");
await VerifyItemExistsAsync(markup, "Method");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
public async Task ObjectInitializerOfGenericTypeСonstraint4()
{
var markup = @"
internal class Example
{
public static T Create<T>()
where T : unmanaged
{
return new T
{
$$
};
}
}";
await VerifyNoItemsExistAsync(markup);
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/26560")]
public async Task ObjectInitializerEscapeKeywords()
{
var markup = @"
class C
{
public int @new { get; set; }
public int @this { get; set; }
public int now { get; set; }
}
class D
{
static void Main(string[] args)
{
var t = new C() { $$ };
}
}";
await VerifyItemExistsAsync(markup, "@new");
await VerifyItemExistsAsync(markup, "@this");
await VerifyItemExistsAsync(markup, "now");
await VerifyItemIsAbsentAsync(markup, "new");
await VerifyItemIsAbsentAsync(markup, "this");
}
[Fact]
public async Task RequiredMembersLabeledAndSelected()
{
var markup = @"
class C
{
public required int RequiredField;
public required int RequiredProperty { get; set; }
}
class D
{
static void Main(string[] args)
{
var t = new C() { $$ };
}
}";
await VerifyItemExistsAsync(markup, "RequiredField", inlineDescription: FeaturesResources.Required, matchPriority: MatchPriority.Preselect);
await VerifyItemExistsAsync(markup, "RequiredProperty", inlineDescription: FeaturesResources.Required);
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
public async Task NestedPropertyInitializers1()
{
var markup = @"
class A
{
public B PropB { get; }
}
class B
{
public int Prop { get; set; }
}
class Program
{
static void Main(string[] args)
{
var a = new A { $$ }
}
}";
await VerifyItemExistsAsync(markup, "PropB");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
public async Task NestedPropertyInitializers2()
{
var markup = @"
class A
{
public B PropB { get; }
}
class B
{
public C PropC { get; }
}
class C
{
public int P { get; set; }
}
class Program
{
static void Main(string[] args)
{
var a = new A { $$ }
}
}";
await VerifyItemExistsAsync(markup, "PropB");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
public async Task NestedPropertyInitializers3()
{
var markup = @"
class A
{
public B PropB { get; }
}
class B
{
public C PropC { get; }
}
class C
{
public SupportsAdd P { get; set; }
}
public class SupportsAdd : IEnumerable
{
public void Add(int x) { }
public IEnumerator GetEnumerator()
{
throw new NotImplementedException();
}
IEnumerator IEnumerable.GetEnumerator()
{
throw new NotImplementedException();
}
}
class Program
{
static void Main(string[] args)
{
var a = new A { $$ }
}
}";
await VerifyItemExistsAsync(markup, "PropB");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
public async Task NestedPropertyInitializers4()
{
var markup = @"
class A
{
public B PropB { get; }
}
class B
{
public C PropC { get; }
}
class C
{
public int P;
}
class Program
{
static void Main(string[] args)
{
var a = new A { $$ }
}
}";
await VerifyItemExistsAsync(markup, "PropB");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
public async Task NestedPropertyInitializers5()
{
var markup = @"
class A
{
public B PropB { get; }
}
class B
{
public C PropC { get; }
}
class C
{
public int P { get; }
}
class Program
{
static void Main(string[] args)
{
var a = new A { $$ }
}
}";
await VerifyItemExistsAsync(markup, "PropB");
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36702")]
public async Task NestedPropertyInitializers6()
{
var markup = @"
class A
{
public B PropB { get; }
}
class B
{
public C PropC { get; }
}
class C
{
public int P { get; }
}
class Program
{
static void Main(string[] args)
{
var a = new A { PropB = { $$ } }
}
}";
await VerifyItemExistsAsync(markup, "PropC");
}
private async Task VerifyExclusiveAsync(string markup, bool exclusive)
{
using var workspace = TestWorkspace.CreateCSharp(markup, composition: GetComposition());
var hostDocument = workspace.Documents.Single();
var position = hostDocument.CursorPosition.Value;
var document = workspace.CurrentSolution.GetDocument(hostDocument.Id);
var triggerInfo = CompletionTrigger.CreateInsertionTrigger('a');
var service = GetCompletionService(document.Project);
var completionList = await GetCompletionListAsync(service, document, position, triggerInfo);
if (!completionList.IsEmpty)
{
Assert.True(exclusive == completionList.IsExclusive, "group.IsExclusive == " + completionList.IsExclusive);
}
}
}
}
|