Given_TestQuery_AndTestQueryHandlerNotRegistered_When_SendAsync_Then_HandlerNotFoundExceptionIsThrown()
{
//Arrange
var query = new TestQuery
{
ReturnValue = "ReturnValue"
};
Func <Type, object> resolver = type => null;
var queryBus = new QueryBus(resolver);
//Act
Func <Task> handleAction = () => queryBus.SendAsync(query);
//Assert
Assert.ThrowsAsync <HandlerNotFoundException>(() => handleAction.Invoke());
}
Given_TestQuery_AndTestQueryHandlerNotRegistered_When_SendAsync_Then_HandlerNotFoundExceptionIsThrown()
{
//Arrange
var services = new ServiceCollection();
var query = new TestQuery
{
ReturnValue = "ReturnValue"
};
var serviceProvider = services.BuildServiceProvider();
var queryBus = new QueryBus(serviceProvider.GetService);
//Act
Func <Task> handleAction = () => queryBus.SendAsync(query);
//Assert
Assert.ThrowsAsync <HandlerNotFoundException>(() => handleAction.Invoke());
}
public async Task Given_TestQuery_When_SendAsync_Then_ResultIsReturned()
{
//Arrange
var query = new TestQuery
{
ReturnValue = "ReturnValue"
};
var queryHandler = new TestQueryHandler();
Func <Type, object> resolver = type => { return(queryHandler); };
var queryBus = new QueryBus(resolver);
//Act
var result = await queryBus.SendAsync(query, CancellationToken.None);
//Assert
Assert.That(result, Is.EqualTo(query.ReturnValue));
}
public async Task Given_TestQuery_When_SendAsync_Then_ResultIsReturned()
{
//Arrange
var services = new ServiceCollection();
var query = new TestQuery
{
ReturnValue = "ReturnValue"
};
var queryHandler = new TestQueryHandler();
services.AddScoped <IQueryHandler <TestQuery, string> >(provider => queryHandler);
var serviceProvider = services.BuildServiceProvider();
var queryBus = new QueryBus(serviceProvider.GetService);
//Act
var result = await queryBus.SendAsync(query, CancellationToken.None);
//Assert
Assert.That(result, Is.EqualTo(query.ReturnValue));
}