public async Task WhenIDeleteACourse_ThenICantRetrieveItAnymore()
{
var newCourse = new Course {
Name = "Course 1"
};
int newId = await CoursesRequests.AddCourse(newCourse);
var course = await CoursesRequests.GetCourse(newId);
Assert.NotNull(course);
Assert.True(await CoursesRequests.DeleteCourse(newId));
Assert.Null(await CoursesRequests.GetCourse(newId));
}