1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Testing;
using Microsoft.CodeAnalysis.Text;
using Xunit;
namespace ILLink.RoslynAnalyzer.Tests
{
public abstract class TestCaseUtils
{
private static readonly string MonoLinkerTestsCases = "Mono.Linker.Tests.Cases";
public static readonly ReferenceAssemblies Net6PreviewAssemblies =
new ReferenceAssemblies (
"net6.0",
new PackageIdentity ("Microsoft.NETCore.App.Ref", "6.0.0-preview.7.21368.2"),
Path.Combine ("ref", "net6.0"))
.WithNuGetConfigFilePath (Path.Combine (TestCaseUtils.GetRepoRoot (), "NuGet.config"));
private static ImmutableArray<MetadataReference> s_net6Refs;
public static async ValueTask<ImmutableArray<MetadataReference>> GetNet6References ()
{
if (s_net6Refs.IsDefault) {
var refs = await Net6PreviewAssemblies.ResolveAsync (null, default);
ImmutableInterlocked.InterlockedInitialize (ref s_net6Refs, refs);
}
return s_net6Refs;
}
public static async Task RunTestFile (string suiteName, string testName, params (string, string)[] msbuildProperties)
{
GetDirectoryPaths (out string rootSourceDir, out string testAssemblyPath);
Debug.Assert (Path.GetFileName (rootSourceDir) == MonoLinkerTestsCases);
var testPath = Path.Combine (rootSourceDir, suiteName, $"{testName}.cs");
Assert.True (File.Exists (testPath));
var tree = SyntaxFactory.ParseSyntaxTree (
SourceText.From (File.OpenRead (testPath), Encoding.UTF8),
path: testPath);
var testDependenciesSource = TestCase.GetTestDependencies (tree)
.Select (f => SyntaxFactory.ParseSyntaxTree (SourceText.From (File.OpenRead (f))));
var comp = await TestCaseCompilation.CreateCompilation (
tree,
msbuildProperties,
additionalSources: testDependenciesSource);
foreach (var testCase in BuildTestCasesForTree (tree)) {
testCase.Run (comp);
}
}
/// <summary>
/// Builds a <see cref="TestCase" /> for each member in the tree.
/// </summary>
private static IEnumerable<TestCase> BuildTestCasesForTree (SyntaxTree tree)
{
var root = tree.GetRoot ();
foreach (var node in root.DescendantNodes ()) {
if (node is MemberDeclarationSyntax m) {
var attrs = m.AttributeLists.SelectMany (al => al.Attributes.Where (IsWellKnown)).ToList ();
if (attrs.Count > 0) {
yield return new TestCase (m, attrs);
}
}
}
static bool IsWellKnown (AttributeSyntax attr)
{
switch (attr.Name.ToString ()) {
// Currently, the analyzer's test infra only understands these attributes when placed on methods.
case "ExpectedWarning":
case "LogContains":
case "LogDoesNotContain":
case "UnrecognizedReflectionAccessPattern":
return true;
}
return false;
}
}
public static void GetDirectoryPaths (out string rootSourceDirectory, out string testAssemblyPath)
{
#if DEBUG
var configDirectoryName = "Debug";
#else
var configDirectoryName = "Release";
#endif
#if NET6_0
const string tfm = "net6.0";
#else
const string tfm = "net5.0";
#endif
// Working directory is artifacts/bin/Mono.Linker.Tests/<config>/<tfm>
var artifactsBinDir = Path.Combine (Directory.GetCurrentDirectory (), "..", "..", "..");
rootSourceDirectory = Path.GetFullPath (Path.Combine (artifactsBinDir, "..", "..", "test", "Mono.Linker.Tests.Cases"));
testAssemblyPath = Path.GetFullPath (Path.Combine (artifactsBinDir, "ILLink.RoslynAnalyzer.Tests", configDirectoryName, tfm));
}
// Accepts typeof expressions, with a format specifier
public static string GetStringFromExpression (TypeOfExpressionSyntax expr, SemanticModel semanticModel, SymbolDisplayFormat displayFormat)
{
var typeSymbol = semanticModel.GetSymbolInfo (expr.Type).Symbol;
return typeSymbol?.ToDisplayString (displayFormat) ?? throw new InvalidOperationException ();
}
// Accepts string literal expressions or binary expressions concatenating strings
public static string GetStringFromExpression (ExpressionSyntax expr, SemanticModel? semanticModel = null)
{
if (expr == null)
return null!;
switch (expr.Kind ()) {
case SyntaxKind.AddExpression:
var addExpr = (BinaryExpressionSyntax) expr;
return GetStringFromExpression (addExpr.Left, semanticModel) + GetStringFromExpression (addExpr.Right, semanticModel);
case SyntaxKind.InvocationExpression:
var nameofValue = semanticModel!.GetConstantValue (expr);
if (nameofValue.HasValue)
return (nameofValue.Value as string)!;
return string.Empty;
case SyntaxKind.StringLiteralExpression:
var strLiteral = (LiteralExpressionSyntax) expr;
var token = strLiteral.Token;
Assert.Equal (SyntaxKind.StringLiteralToken, token.Kind ());
return token.ValueText;
default:
Assert.True (false, "Unsupported expr kind " + expr.Kind ());
return null!;
}
}
public static Dictionary<string, ExpressionSyntax> GetAttributeArguments (AttributeSyntax attribute)
{
Dictionary<string, ExpressionSyntax> arguments = new Dictionary<string, ExpressionSyntax> ();
int ordinal = 0;
foreach (var argument in attribute.ArgumentList!.Arguments) {
string argName;
if (argument.NameEquals != null) {
argName = argument.NameEquals.ChildNodes ().OfType<IdentifierNameSyntax> ().First ().Identifier.ValueText;
} else if (argument.NameColon is NameColonSyntax nameColon) {
argName = nameColon.Name.Identifier.ValueText;
} else {
argName = "#" + ordinal.ToString ();
ordinal++;
}
arguments.Add (argName, argument.Expression);
}
return arguments;
}
public static (string, string)[] UseMSBuildProperties (params string[] MSBuildProperties)
{
return MSBuildProperties.Select (msbp => ($"build_property.{msbp}", "true")).ToArray ();
}
public static string GetRepoRoot ()
{
return Directory.GetParent (ThisFile ())!.Parent!.Parent!.FullName;
string ThisFile ([CallerFilePath] string path = "") => path;
}
}
}
|
