public void Throws_if_no_mapping_for_the_value_exists()
{
// Arrange
MappingHandler.AddMapping <string, string>(source => "a string mapper");
// Act
Func <Task <bool> > convertAction = async() => await MappingHandler.ConvertAsync <bool>("a string value to a bool converter");
//Assert
convertAction.Should().Throw <Exception>("because bool has no mapping");
}
public async Task Returns_null_given_null_despite_mapping_producing_value()
{
// Arrange
MappingHandler.AddMapping <string, string>(source => "not null");
// Act
var result = await MappingHandler.ConvertAsync <string>(null);
//Assert
result.Should().Be(null);
}
public async Task Can_convert_primitive_type()
{
// Arrange
MappingHandler.AddMapping <int, bool>(source => source > 0);
// Act
var result = await MappingHandler.ConvertAsync <bool>(1);
//Assert
result.Should().Be(true);
}
public async Task Can_add_optional_additional_async_conversion_after_convert()
{
// Arrange
MappingHandler.AddMapping <int, int>(source => source + 2);
// Act
var result = await MappingHandler.ConvertAsync <int>(1, withTwoAdded => Task.FromResult(withTwoAdded * 3));
//Assert
result.Should().Be(9);
}
public static Task <TTo> ConvertAsync <TTo>(this object instance, Func <TTo, Task <TTo> > afterMapping = null) => MappingHandler.ConvertAsync(instance, afterMapping);