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Add Specs for illegal attempted use of fluent API
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,183 @@ | ||
| namespace FakeItEasy.Specs | ||
| { | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Globalization; | ||
| using System.Linq; | ||
| using System.Reflection; | ||
| using FakeItEasy.Tests.TestHelpers; | ||
| using FluentAssertions; | ||
| using Microsoft.CodeAnalysis; | ||
| using Microsoft.CodeAnalysis.CSharp; | ||
| using Xbehave; | ||
|
|
||
| /// <summary> | ||
| /// Check that certain fluent API syntax constructions are illegal. | ||
| /// </summary> | ||
| public static class IllegalFluentApiSpecs | ||
| { | ||
| private const string FakeUsageTemplate = @" | ||
| namespace ApiTest | ||
| {{ | ||
| using FakeItEasy; | ||
| public class Test | ||
| {{ | ||
| public interface IService | ||
| {{ | ||
| void AVoidMethod(); | ||
| int AnIntMethod(); | ||
| int AProperty {{ get; set; }} | ||
| }} | ||
| public void TestMethod() | ||
| {{ | ||
| var fake = A.Fake<IService>(); | ||
| {0}; | ||
| }} | ||
| }} | ||
| }} | ||
| "; | ||
|
|
||
| private static IEnumerable<Microsoft.CodeAnalysis.MetadataReference> references = AppDomain.CurrentDomain.GetAssemblies() | ||
| .Where(a => !a.IsDynamic) | ||
| .Where(CompilationRequiresAssembly) | ||
| .Select(a => MetadataReference.CreateFromFile(a.Location)) | ||
| .ToList(); | ||
|
|
||
| [Scenario] | ||
| [UsingCulture("en-US")] | ||
| [Example( | ||
| "A.CallTo(fake).Returns(3)", | ||
| "does not contain a definition for 'Returns'")] | ||
| [Example( | ||
| "A.CallTo(fake).WithReturnType<string>().Returns(3)", | ||
| "does not contain a definition for 'Returns'")] | ||
| [Example( | ||
| "A.CallTo(fake).Invokes(() => {}).MustHaveHappened(4, Times.OrLess)", | ||
| "No overload for method 'MustHaveHappened'")] | ||
| [Example( | ||
| "A.CallTo(fake).Invokes(() => {}).MustHaveHappenedANumberOfTimesMatching(count => true)", | ||
| "does not contain a definition for 'MustHaveHappenedANumberOfTimesMatching'")] | ||
| [Example( | ||
| "A.CallTo(fake).CallsWrappedMethod().MustHaveHappened(4, Times.OrLess)", | ||
| "No overload for method 'MustHaveHappened'")] | ||
| [Example( | ||
| "A.CallTo(fake).CallsWrappedMethod().MustHaveHappenedANumberOfTimesMatching(count => true)", | ||
| "does not contain a definition for 'MustHaveHappenedANumberOfTimesMatching'")] | ||
| [Example( | ||
| "A.CallTo(fake).WithNonVoidReturnType().Returns(0).MustHaveHappened(4, Times.OrLess)", | ||
| "No overload for method 'MustHaveHappened'")] | ||
| [Example( | ||
| "A.CallTo(fake).WithNonVoidReturnType().Returns(0).MustHaveHappenedANumberOfTimesMatching(count => true)", | ||
| "does not contain a definition for 'MustHaveHappenedANumberOfTimesMatching'")] | ||
| [Example( | ||
| "A.CallTo(fake).WhenArgumentsMatch(call => true).WithNonVoidReturnType()", | ||
| "does not contain a definition for 'WithNonVoidReturnType'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AVoidMethod()).WithNonVoidReturnType()", | ||
| "does not contain a definition for 'WithNonVoidReturnType'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AVoidMethod()).WithReturnType<string>()", | ||
| "does not contain a definition for 'WithReturnType'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AVoidMethod()).Returns(3)", | ||
| "does not contain a definition for 'Returns'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AnIntMethod()).WithNonVoidReturnType()", | ||
| "does not contain a definition for 'WithNonVoidReturnType'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AnIntMethod()).WithReturnType<int>()", | ||
| "does not contain a definition for 'WithReturnType'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AnIntMethod()).Returns(new object())", | ||
| "does not contain a definition for 'Returns'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AnIntMethod()).Returns(3).Invokes(() => {})", | ||
| "does not contain a definition for 'Invokes'")] | ||
| [Example( | ||
| "A.CallTo(() => fake.AnIntMethod()).Throws<System.Exception>().MustHaveHappened()", | ||
| "does not contain a definition for 'MustHaveHappened'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).Returns(3)", | ||
| "does not contain a definition for 'Returns'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).SetsOutAndRefParameters('a')", | ||
| "does not contain a definition for 'SetsOutAndRefParameters'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).WithReturnType<string>()", | ||
| "does not contain a definition for 'WithReturnType'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).WithNonVoidReturnType()", | ||
| "does not contain a definition for 'WithNonVoidReturnType'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).Invokes(() => {}).MustHaveHappened()", | ||
| "does not contain a definition for 'MustHaveHappened'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).Throws<System.Exception>().MustHaveHappened()", | ||
| "does not contain a definition for 'MustHaveHappened'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).To(7).Returns(3)", | ||
| "does not contain a definition for 'Returns'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).To(7).SetsOutAndRefParameters('a')", | ||
| "does not contain a definition for 'SetsOutAndRefParameters'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).To(7).WithReturnType<string>()", | ||
| "does not contain a definition for 'WithReturnType'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).To(7).WithNonVoidReturnType()", | ||
| "does not contain a definition for 'WithNonVoidReturnType'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).To(7).Invokes(() => {}).MustHaveHappened()", | ||
| "does not contain a definition for 'MustHaveHappened'")] | ||
| [Example( | ||
| "A.CallToSet(() => fake.AProperty).To(7).Throws<System.Exception>().MustHaveHappened()", | ||
| "does not contain a definition for 'MustHaveHappened'")] | ||
| public static void IllegalSyntax(string illegalOperation, string expectedError, string illegalUsage, IEnumerable<Diagnostic> diagnostics) | ||
| { | ||
| "Given an illegal usage of a fake" | ||
| .x(() => illegalUsage = string.Format(CultureInfo.InvariantCulture, FakeUsageTemplate, illegalOperation)); | ||
|
|
||
| "When I compile the usage" | ||
| .x(() => diagnostics = Compile(illegalUsage)); | ||
|
|
||
| "Then the compilation fails" | ||
| .x(() => diagnostics.Should().ContainSingle().Which.GetMessage().Should() | ||
| .Contain(expectedError)); | ||
| } | ||
|
|
||
| private static bool CompilationRequiresAssembly(Assembly a) | ||
| { | ||
| var assemblyName = a.GetName().Name; | ||
| return | ||
| assemblyName == "mscorlib" || | ||
| assemblyName == "netstandard" || | ||
| assemblyName == "System.Core" || | ||
| assemblyName == "System.Linq.Expressions" || | ||
| assemblyName == "System.Private.CoreLib" || | ||
| assemblyName == "System.Runtime" || | ||
| assemblyName == "FakeItEasy"; | ||
| } | ||
|
|
||
| private static System.Collections.Immutable.ImmutableArray<Diagnostic> Compile(string source) | ||
| { | ||
| var compilationOptions = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary) | ||
| .WithOverflowChecks(true) | ||
| .WithOptimizationLevel(OptimizationLevel.Release); | ||
|
|
||
| var parsedSyntaxTree = SyntaxFactory.ParseSyntaxTree( | ||
| source, | ||
| CSharpParseOptions.Default.WithLanguageVersion(LanguageVersion.Latest), | ||
| string.Empty); | ||
|
|
||
| var compilation = CSharpCompilation.Create( | ||
| "Test.dll", | ||
| new[] { parsedSyntaxTree }, | ||
| references, | ||
| compilationOptions); | ||
| return compilation.GetDiagnostics(); | ||
| } | ||
| } | ||
| } |