public async Task Write_throws_on_invalid_comment(
Comment comment,
List <ValidationError> errors,
Mock <ICommentValidator> validator,
Mock <ICommentWriter> writer)
{
validator.Setup(v => v.Validate(comment)).Returns(errors);
var sut = new ValidatedWriter(validator.Object, writer.Object);
await Assert.ThrowsAsync <ValidationException>(() => sut.Write(comment));
}
public async Task Write_calls_inner_writer(
Comment comment,
Mock <ICommentValidator> validator,
Mock <ICommentWriter> writer)
{
var sut = new ValidatedWriter(validator.Object, writer.Object);
await sut.Write(comment);
writer.Verify(w => w.Write(comment), Times.Exactly(1));
}