public void Create_DeclaringTypeNoTopicClientAttribute_ArgumentException()
{
//Arrange
Expression <Func <MethodInfo, ParameterInfo[]> > getParametersMock = (method) => method.GetParameters();
_methodInfoMock.Setup(getParametersMock)
.Returns(new ParameterInfo[1]);
_methodInfoMock.Setup((methodInfo) => methodInfo.ReturnType)
.Returns(typeof(void));
Expression <Func <Type, object[]> > getCustomAttributesMock = (type) => type.GetCustomAttributes(It.IsAny <Type>(), It.IsAny <bool>());
_declaringTypeMock.Setup(getCustomAttributesMock)
.Returns(() =>
{
return(new object[0]);
});
var commandHandlerContextFactory = new CommandHandlerContextFactory();
try
{
//Act
commandHandlerContextFactory.Create(_methodInfoMock.Object);
//Assert
Assert.True(false, "The method was supposed to throw an ArgumentException.");
}
catch (ArgumentException ex)
{
_methodInfoMock.Verify(getParametersMock);
_declaringTypeMock.Verify(getCustomAttributesMock);
Assert.Equal("methodInfo", ex.ParamName);
Assert.StartsWith($"The specified method's declaring type is not attributed with the {nameof(TopicClientAttribute)}.", ex.Message);
}
}
public void Create_MethodInfo_InvalidParameterCount(int count)
{
//Arrange
Expression <Func <MethodInfo, ParameterInfo[]> > getParametersMock = (method) => method.GetParameters();
_methodInfoMock.Setup(getParametersMock)
.Returns(new ParameterInfo[count]);
_methodInfoMock.Setup((methodInfo) => methodInfo.ReturnType)
.Returns(typeof(void));
var commandHandlerContextFactory = new CommandHandlerContextFactory();
try
{
//Act
commandHandlerContextFactory.Create(_methodInfoMock.Object);
//Assert
Assert.True(false, "The method was supposed to throw an ArgumentException.");
}
catch (ArgumentException ex)
{
_methodInfoMock.Verify(getParametersMock);
Assert.Equal("methodInfo", ex.ParamName);
Assert.StartsWith("The specified method can only have 1 parameter.", ex.Message);
}
}
public void Create_NullInput_ArgumentNullException()
{
//Arrange
var commandHandlerContextFactory = new CommandHandlerContextFactory();
try
{
//Act
commandHandlerContextFactory.Create(null);
Assert.True(false, "The method was supposed to throw an ArgumentNullException.");
}
catch (ArgumentNullException ex)
{
Assert.Equal("methodInfo", ex.ParamName);
}
}
public void Create_Success(string queue)
{
//Arrange
const string topic = nameof(topic);
Expression <Func <MethodInfo, ParameterInfo[]> > getParametersMock = (method) => method.GetParameters();
_methodInfoMock.Setup(getParametersMock)
.Returns(() =>
{
return(new ParameterInfo[1]
{
_parameterInfoMock.Object
});
});
_methodInfoMock.Setup((methodInfo) => methodInfo.ReturnType)
.Returns(typeof(void));
Expression <Func <Type, object[]> > getDeclaringTypeCustomAttributesMock = (type) => type.GetCustomAttributes(It.IsAny <Type>(), It.IsAny <bool>());
_declaringTypeMock.Setup(getDeclaringTypeCustomAttributesMock)
.Returns((Type type, bool b) =>
{
if (b)
{
Assert.True(false, "The parameter should be false.");
}
return(new object[1]
{
new TopicClientAttribute()
});
});
Expression <Func <MethodInfo, object[]> > getMethodInfoCustomAttributesMock = (method) => method.GetCustomAttributes(It.IsAny <Type>(), It.IsAny <bool>());
_methodInfoMock.Setup(getMethodInfoCustomAttributesMock)
.Returns((Type type, bool b) =>
{
if (b)
{
Assert.True(false, "The parameter should be false.");
}
return(new object[1]
{
new TopicSubscriptionAttribute(topic, queue, typeof(MessageParser))
});
});
var commandHandlerContextFactory = new CommandHandlerContextFactory();
//Act
var context = commandHandlerContextFactory.Create(_methodInfoMock.Object);
//Assert
Assert.Equal(_declaringTypeMock.Object, context.DeclaringType);
Assert.Equal(_parameterInfoMock.Object.ParameterType, context.ParameterType);
Assert.Equal(queue ?? string.Empty, context.Queue);
Assert.Equal(topic, context.Topic);
Assert.Equal(_methodInfoMock.Object, context.TargetMethod);
_methodInfoMock.Verify(getParametersMock);
_declaringTypeMock.Verify(getDeclaringTypeCustomAttributesMock);
_methodInfoMock.Verify(getMethodInfoCustomAttributesMock);
}
