Esempi in C# (CSharp) per CodeAnalysisExtensions.IsAssignableFrom

Esempio n. 1

File: CodeAnalysisExtensionsTest.cs Progetto: pa-at/aspnetcore

    public void IsAssignable_ReturnsTrueIfAncestorTypeImplementsInterface()
    {
        // Arrange
        var source      = @"
namespace TestApp
{
public interface ITestInterface
{
}

public class ITestInterfaceA : ITestInterface
{
}

public class ITestInterfaceB : ITestInterfaceA
{
}

public class TestClass : ITestInterfaceB
{
}";
        var compilation = TestCompilation.Create(source);
        var sourceType  = compilation.GetTypeByMetadataName("TestApp.ITestInterface");
        var target      = compilation.GetTypeByMetadataName("TestApp.TestClass");

        // Act
        var isAssignableFrom        = CodeAnalysisExtensions.IsAssignableFrom(sourceType, target);
        var isAssignableFromDerived = CodeAnalysisExtensions.IsAssignableFrom(target, sourceType);

        // Assert
        Assert.True(isAssignableFrom);
        Assert.False(isAssignableFromDerived); // Inverse shouldn't be true
    }

Esempio n. 2

File: CodeAnalysisExtensionsTest.cs Progetto: pa-at/aspnetcore

    public void IsAssignable_ReturnsTrue_IfSourceAndDestinationAreTheSameInterface()
    {
        // Arrange
        var source = @"
namespace TestApp
{
    public interface ITestInterface { }
}";

        var compilation = TestCompilation.Create(source);
        var sourceType  = compilation.GetTypeByMetadataName("TestApp.ITestInterface");
        var target      = compilation.GetTypeByMetadataName("TestApp.ITestInterface");

        // Act
        var isAssignableFrom = CodeAnalysisExtensions.IsAssignableFrom(sourceType, target);

        // Assert
        Assert.True(isAssignableFrom);
    }

Esempio n. 3

File: CodeAnalysisExtensionsTest.cs Progetto: pa-at/aspnetcore

    public void IsAssignable_ReturnsFalseIfTypeDoesNotImplementInterface()
    {
        // Arrange
        var source = @"
namespace TestApp
{
    public class TypeA { }
}";

        var compilation = TestCompilation.Create(source);
        var sourceType  = compilation.GetTypeByMetadataName("TestApp.TypeA");
        var target      = compilation.GetTypeByMetadataName("System.IDisposable");

        // Act
        var isAssignableFrom = CodeAnalysisExtensions.IsAssignableFrom(sourceType, target);

        // Assert
        Assert.False(isAssignableFrom);
    }

Esempio n. 4

File: CodeAnalysisExtensionsTest.cs Progetto: pa-at/aspnetcore

    public void IsAssignable_ReturnsTrueIfTypesAreExact()
    {
        // Arrange
        var source = @"
namespace TestApp
{
    public class TestType  {  }
}";

        var compilation = TestCompilation.Create(source);
        var sourceType  = compilation.GetTypeByMetadataName("TestApp.TestType");
        var target      = compilation.GetTypeByMetadataName("TestApp.TestType");

        // Act
        var isAssignableFrom = CodeAnalysisExtensions.IsAssignableFrom(sourceType, target);

        // Assert
        Assert.True(isAssignableFrom);
    }

Esempio n. 5

File: CodeAnalysisExtensionsTest.cs Progetto: pa-at/aspnetcore

    public void IsAssignable_ReturnsFalseForDifferentTypes()
    {
        // Arrange
        var source = @"
namespace TestApp
{
    public class TypeA { }

    public class TypeB { }
}";

        var compilation = TestCompilation.Create(source);
        var sourceType  = compilation.GetTypeByMetadataName("TestApp.TypeA");
        var target      = compilation.GetTypeByMetadataName("TestApp.TypeB");

        // Act
        var isAssignableFrom = CodeAnalysisExtensions.IsAssignableFrom(sourceType, target);

        // Assert
        Assert.False(isAssignableFrom);
    }