public async Task DeleteAssignmentAsync_ReturnsNoContentResponse_WhenPassedValidValue()
{
// Arrange
var assignmentId = Guid.NewGuid();
_stubAssignmentService.Setup(x => x.RemoveAssignmentAsync(assignmentId))
.ReturnsAsync(true);
// Act
var actionResult = await _assignmentsController.DeleteAssignmentAsync(assignmentId);
// Assert
Assert.IsInstanceOf(typeof(NoContentResult), actionResult);
}