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CodeStructureFacts.cs
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/
CodeStructureFacts.cs
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using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using OmniSharp.Mef;
using OmniSharp.Models.V2;
using OmniSharp.Models.V2.CodeStructure;
using OmniSharp.Roslyn.CSharp.Services.Structure;
using OmniSharp.Services;
using TestUtility;
using Xunit;
using Xunit.Abstractions;
namespace OmniSharp.Roslyn.CSharp.Tests
{
public class CodeStructureFacts : AbstractSingleRequestHandlerTestFixture<CodeStructureService>
{
public CodeStructureFacts(ITestOutputHelper output, SharedOmniSharpHostFixture sharedOmniSharpHostFixture)
: base(output, sharedOmniSharpHostFixture)
{
}
protected override string EndpointName => OmniSharpEndpoints.V2.CodeStructure;
[Fact]
public async Task AllTypes()
{
const string source = @"
class C { }
delegate void D(int i, ref string s);
enum E { One, Two, Three }
interface I { }
struct S { }
";
var response = await GetCodeStructureAsync(source);
Assert.Equal(5, response.Elements.Count);
AssertElement(response.Elements[0], SymbolKinds.Class, "C", "C");
AssertElement(response.Elements[1], SymbolKinds.Delegate, "D", "D");
AssertElement(response.Elements[2], SymbolKinds.Enum, "E", "E");
AssertElement(response.Elements[3], SymbolKinds.Interface, "I", "I");
AssertElement(response.Elements[4], SymbolKinds.Struct, "S", "S");
}
[Fact]
public async Task AllTypesInNamespace()
{
const string source = @"
namespace N
{
class C { }
delegate void D(int i, ref string s);
enum E { One, Two, Three }
interface I { }
struct S { }
}
";
var response = await GetCodeStructureAsync(source);
var elementN = Assert.Single(response.Elements);
AssertElement(elementN, SymbolKinds.Namespace, "N", "N");
var children = elementN.Children;
Assert.Equal(5, children.Count);
AssertElement(children[0], SymbolKinds.Class, "C", "N.C");
AssertElement(children[1], SymbolKinds.Delegate, "D", "N.D");
AssertElement(children[2], SymbolKinds.Enum, "E", "N.E");
AssertElement(children[3], SymbolKinds.Interface, "I", "N.I");
AssertElement(children[4], SymbolKinds.Struct, "S", "N.S");
}
[Fact]
public async Task GenericTypesInNamespace()
{
const string source = @"
namespace N
{
class C<T> { }
delegate void D<T1, T2>(int i, ref string s);
interface I<T> { }
struct S<T> { }
}
";
var response = await GetCodeStructureAsync(source);
var elementN = Assert.Single(response.Elements);
AssertElement(elementN, SymbolKinds.Namespace, "N", "N");
var children = elementN.Children;
Assert.Equal(4, children.Count);
AssertElement(children[0], SymbolKinds.Class, "C<T>", "N.C<T>");
AssertElement(children[1], SymbolKinds.Delegate, "D<T1, T2>", "N.D<T1, T2>");
AssertElement(children[2], SymbolKinds.Interface, "I<T>", "N.I<T>");
AssertElement(children[3], SymbolKinds.Struct, "S<T>", "N.S<T>");
}
[Fact]
public async Task NestedNamespaces()
{
const string source = @"
namespace N1
{
namespace N2.N3
{
namespace N4 { }
}
namespace N5
{
}
namespace N2
{
namespace N6 { }
}
}
";
var response = await GetCodeStructureAsync(source);
var elementN1 = Assert.Single(response.Elements);
AssertElement(elementN1, SymbolKinds.Namespace, "N1", "N1");
Assert.Equal(3, elementN1.Children.Count);
var elementN3 = elementN1.Children[0];
AssertElement(elementN3, SymbolKinds.Namespace, "N3", "N1.N2.N3");
var elementN4 = Assert.Single(elementN3.Children);
AssertElement(elementN4, SymbolKinds.Namespace, "N4", "N1.N2.N3.N4");
var elementN5 = elementN1.Children[1];
AssertElement(elementN5, SymbolKinds.Namespace, "N5", "N1.N5");
var elementN2 = elementN1.Children[2];
AssertElement(elementN2, SymbolKinds.Namespace, "N2", "N1.N2");
var elementN6 = Assert.Single(elementN2.Children);
AssertElement(elementN6, SymbolKinds.Namespace, "N6", "N1.N2.N6");
}
[Fact]
public async Task NestedTypes()
{
const string source = @"
class C
{
delegate void D(int i, ref string s);
interface I { }
struct S
{
enum E { One, Two, Three }
}
}
";
var response = await GetCodeStructureAsync(source);
var elementC = Assert.Single(response.Elements);
AssertElement(elementC, SymbolKinds.Class, "C", "C");
Assert.Equal(3, elementC.Children.Count);
var elementD = elementC.Children[0];
AssertElement(elementD, SymbolKinds.Delegate, "D", "C.D");
var elementI = elementC.Children[1];
AssertElement(elementI, SymbolKinds.Interface, "I", "C.I");
var elementS = elementC.Children[2];
AssertElement(elementS, SymbolKinds.Struct, "S", "C.S");
var elementE = Assert.Single(elementS.Children);
AssertElement(elementE, SymbolKinds.Enum, "E", "C.S.E");
}
[Fact]
public async Task ClassMembers()
{
const string source = @"
class C
{
private int _f;
private int _f1, _f2;
private const int _c;
public C() { }
~C() { }
public void M1() { }
public void M2(int i, ref string s, params object[] array) { }
public static implicit operator C(int i) { return null; }
public static C operator +(C c1, C c2) { return null; }
public int P { get; set; }
public event EventHandler E;
public event EventHandler E1, E2;
public event EventHandler E3 { add { } remove { } }
internal int this[int index] => 42;
}
";
var response = await GetCodeStructureAsync(source);
var elementC = Assert.Single(response.Elements);
AssertElement(elementC, SymbolKinds.Class, "C", "C", @static: false);
var children = elementC.Children;
Assert.Equal(16, children.Count);
AssertElement(children[0], SymbolKinds.Field, "_f", "_f", SymbolAccessibilities.Private, @static: false);
AssertElement(children[1], SymbolKinds.Field, "_f1", "_f1", SymbolAccessibilities.Private, @static: false);
AssertElement(children[2], SymbolKinds.Field, "_f2", "_f2", SymbolAccessibilities.Private, @static: false);
AssertElement(children[3], SymbolKinds.Constant, "_c", "_c", SymbolAccessibilities.Private, @static: true);
AssertElement(children[4], SymbolKinds.Constructor, "C", "C()", SymbolAccessibilities.Public, @static: false);
AssertElement(children[5], SymbolKinds.Destructor, "~C", "~C()", SymbolAccessibilities.Protected, @static: false);
AssertElement(children[6], SymbolKinds.Method, "M1", "M1()", SymbolAccessibilities.Public, @static: false);
AssertElement(children[7], SymbolKinds.Method, "M2", "M2(int i, ref string s, params object[] array)", SymbolAccessibilities.Public, @static: false);
AssertElement(children[8], SymbolKinds.Operator, "implicit operator C", "implicit operator C(int i)", SymbolAccessibilities.Public, @static: true);
AssertElement(children[9], SymbolKinds.Operator, "operator +", "operator +(C c1, C c2)", SymbolAccessibilities.Public, @static: true);
AssertElement(children[10], SymbolKinds.Property, "P", "P", SymbolAccessibilities.Public, @static: false);
AssertElement(children[11], SymbolKinds.Event, "E", "E", SymbolAccessibilities.Public, @static: false);
AssertElement(children[12], SymbolKinds.Event, "E1", "E1", SymbolAccessibilities.Public, @static: false);
AssertElement(children[13], SymbolKinds.Event, "E2", "E2", SymbolAccessibilities.Public, @static: false);
AssertElement(children[14], SymbolKinds.Event, "E3", "E3", SymbolAccessibilities.Public, @static: false);
AssertElement(children[15], SymbolKinds.Indexer, "this", "this[int index]", SymbolAccessibilities.Internal, @static: false);
}
[Fact]
public async Task StaticClassAndMembers()
{
const string source = @"
static class C
{
private static int _f;
private static int _f1, _f2;
private const int _c;
static C() { }
public static void M1() { }
public static void M2(int i, ref string s, params object[] array) { }
public static int P { get; set; }
public static event EventHandler E;
public static event EventHandler E1, E2;
public static event EventHandler E3 { add { } remove { } }
}
";
var response = await GetCodeStructureAsync(source);
var elementC = Assert.Single(response.Elements);
AssertElement(elementC, SymbolKinds.Class, "C", "C");
var children = elementC.Children;
Assert.Equal(12, children.Count);
AssertElement(children[0], SymbolKinds.Field, "_f", "_f", SymbolAccessibilities.Private, @static: true);
AssertElement(children[1], SymbolKinds.Field, "_f1", "_f1", SymbolAccessibilities.Private, @static: true);
AssertElement(children[2], SymbolKinds.Field, "_f2", "_f2", SymbolAccessibilities.Private, @static: true);
AssertElement(children[3], SymbolKinds.Constant, "_c", "_c", SymbolAccessibilities.Private, @static: true);
AssertElement(children[4], SymbolKinds.Constructor, "C", "C()", SymbolAccessibilities.Private, @static: true);
AssertElement(children[5], SymbolKinds.Method, "M1", "M1()", SymbolAccessibilities.Public, @static: true);
AssertElement(children[6], SymbolKinds.Method, "M2", "M2(int i, ref string s, params object[] array)", SymbolAccessibilities.Public, @static: true);
AssertElement(children[7], SymbolKinds.Property, "P", "P", SymbolAccessibilities.Public, @static: true);
AssertElement(children[8], SymbolKinds.Event, "E", "E", SymbolAccessibilities.Public, @static: true);
AssertElement(children[9], SymbolKinds.Event, "E1", "E1", SymbolAccessibilities.Public, @static: true);
AssertElement(children[10], SymbolKinds.Event, "E2", "E2", SymbolAccessibilities.Public, @static: true);
AssertElement(children[11], SymbolKinds.Event, "E3", "E3", SymbolAccessibilities.Public, @static: true);
}
[Fact]
public async Task HasAttributes()
{
const string source = @"
[Hello]
class C
{
[World]
void M() { }
}
";
var response = await GetCodeStructureAsync(source);
var elementC = Assert.Single(response.Elements);
Assert.Contains(elementC.Ranges, kvp => kvp.Key == SymbolRangeNames.Full);
Assert.Contains(elementC.Ranges, kvp => kvp.Key == SymbolRangeNames.Name);
Assert.Contains(elementC.Ranges, kvp => kvp.Key == SymbolRangeNames.Attributes);
var elementM = Assert.Single(elementC.Children);
Assert.Contains(elementM.Ranges, kvp => kvp.Key == SymbolRangeNames.Full);
Assert.Contains(elementM.Ranges, kvp => kvp.Key == SymbolRangeNames.Name);
Assert.Contains(elementM.Ranges, kvp => kvp.Key == SymbolRangeNames.Attributes);
}
[Fact]
public async Task HasNoAttributes()
{
const string source = @"
class C
{
void M() { }
}
";
var response = await GetCodeStructureAsync(source);
var elementC = Assert.Single(response.Elements);
Assert.Contains(elementC.Ranges, kvp => kvp.Key == SymbolRangeNames.Full);
Assert.Contains(elementC.Ranges, kvp => kvp.Key == SymbolRangeNames.Name);
Assert.DoesNotContain(elementC.Ranges, kvp => kvp.Key == SymbolRangeNames.Attributes);
var elementM = Assert.Single(elementC.Children);
Assert.Contains(elementM.Ranges, kvp => kvp.Key == SymbolRangeNames.Full);
Assert.Contains(elementM.Ranges, kvp => kvp.Key == SymbolRangeNames.Name);
Assert.DoesNotContain(elementM.Ranges, kvp => kvp.Key == SymbolRangeNames.Attributes);
}
private class NameLengthPropertyProvider : ICodeElementPropertyProvider
{
public IEnumerable<(string name, object value)> ProvideProperties(ISymbol symbol)
{
yield return ("namelength", symbol.Name.Length);
}
}
[Fact]
public async Task TestPropertyProvider()
{
const string source = @"
class ClassName
{
void MethodName() { }
}
";
var propertyProvider = new NameLengthPropertyProvider();
var export = MefValueProvider.From<ICodeElementPropertyProvider>(propertyProvider);
using (var host = CreateOmniSharpHost(additionalExports: new[] { export }))
{
var response = await GetCodeStructureAsync(source, host);
var elementC = Assert.Single(response.Elements);
Assert.Contains(elementC.Properties, kvp => kvp.Key == "namelength" && (int)kvp.Value == 9);
var elementM = Assert.Single(elementC.Children);
Assert.Contains(elementM.Properties, kvp => kvp.Key == "namelength" && (int)kvp.Value == 10);
}
}
[Fact]
public async Task TestTypeNameRanges()
{
const string source = @"
class {|nameC:C|} { }
delegate void {|nameD:D|}(int i, ref string s);
enum {|nameE:E|} { One, Two, Three }
interface {|nameI:I|} { }
struct {|nameS:S|} { }
";
var testFile = new TestFile("test.cs", source);
var response = await GetCodeStructureAsync(testFile);
AssertRange(response.Elements[0], testFile.Content, "nameC", "name");
AssertRange(response.Elements[1], testFile.Content, "nameD", "name");
AssertRange(response.Elements[2], testFile.Content, "nameE", "name");
AssertRange(response.Elements[3], testFile.Content, "nameI", "name");
AssertRange(response.Elements[4], testFile.Content, "nameS", "name");
}
[Fact]
public async Task TestClassMembersNameRanges()
{
const string source = @"
class C
{
private int {|name_f:_f|};
private int {|name_f1:_f1|}, {|name_f2:_f2|};
private const int {|name_c:_c|};
public {|nameCtor:C|}() { }
~{|nameDtor:C|}() { }
public void {|nameM1:M1|}() { }
public void {|nameM2:M2|}(int i, ref string s, params object[] array) { }
public static implicit operator {|nameOpC:C|}(int i) { return null; }
public static C operator {|nameOpPlus:+|}(C c1, C c2) { return null; }
public int {|nameP:P|} { get; set; }
public event EventHandler {|nameE:E|};
public event EventHandler {|nameE1:E1|}, {|nameE2:E2|};
public event EventHandler {|nameE3:E3|} { add { } remove { } }
internal int {|nameThis:this|}[int index] => 42;
}
";
var testFile = new TestFile("test.cs", source);
var response = await GetCodeStructureAsync(testFile);
var elementC = Assert.Single(response.Elements);
AssertRange(elementC.Children[0], testFile.Content, "name_f", "name");
AssertRange(elementC.Children[1], testFile.Content, "name_f1", "name");
AssertRange(elementC.Children[2], testFile.Content, "name_f2", "name");
AssertRange(elementC.Children[3], testFile.Content, "name_c", "name");
AssertRange(elementC.Children[4], testFile.Content, "nameCtor", "name");
AssertRange(elementC.Children[5], testFile.Content, "nameDtor", "name");
AssertRange(elementC.Children[6], testFile.Content, "nameM1", "name");
AssertRange(elementC.Children[7], testFile.Content, "nameM2", "name");
AssertRange(elementC.Children[8], testFile.Content, "nameOpC", "name");
AssertRange(elementC.Children[9], testFile.Content, "nameOpPlus", "name");
AssertRange(elementC.Children[10], testFile.Content, "nameP", "name");
AssertRange(elementC.Children[11], testFile.Content, "nameE", "name");
AssertRange(elementC.Children[12], testFile.Content, "nameE1", "name");
AssertRange(elementC.Children[13], testFile.Content, "nameE2", "name");
AssertRange(elementC.Children[14], testFile.Content, "nameE3", "name");
AssertRange(elementC.Children[15], testFile.Content, "nameThis", "name");
}
[Fact]
public async Task NonExistingFile()
{
var request = new CodeStructureRequest
{
FileName = $"{Guid.NewGuid().ToString("N")}.cs"
};
var requestHandler = GetRequestHandler(SharedOmniSharpTestHost);
var response = await requestHandler.Handle(request);
Assert.NotNull(response);
Assert.Empty(response.Elements);
}
private static void AssertRange(CodeElement elementC, TestContent content, string contentSpanName, string elementRangeName)
{
var span = Assert.Single(content.GetSpans(contentSpanName));
var range = content.GetRangeFromSpan(span).ToRange();
Assert.Equal(range, elementC.Ranges[elementRangeName]);
}
private static void AssertElement(CodeElement element, string kind, string name, string displayName, string accessibility = null, bool? @static = null)
{
Assert.Equal(kind, element.Kind);
Assert.Equal(name, element.Name);
Assert.Equal(displayName, element.DisplayName);
if (accessibility != null)
{
Assert.Equal(accessibility, element.Properties[SymbolPropertyNames.Accessibility]);
}
if (@static != null)
{
Assert.Equal(@static, element.Properties[SymbolPropertyNames.Static]);
}
}
private Task<CodeStructureResponse> GetCodeStructureAsync(string source, OmniSharpTestHost host = null)
{
var testFile = new TestFile("test.cs", source);
return GetCodeStructureAsync(testFile, host);
}
private Task<CodeStructureResponse> GetCodeStructureAsync(TestFile testFile, OmniSharpTestHost host = null)
{
host = host ?? SharedOmniSharpTestHost;
host.AddFilesToWorkspace(testFile);
var requestHandler = GetRequestHandler(host);
var request = new CodeStructureRequest
{
FileName = "test.cs"
};
return requestHandler.Handle(request);
}
}
}