//[Fact]
public async Task FindStudent_ShouldReturnAnonymousObject_WhenUknownIdPassed()
{
// Arrange
var studentId = 0;
// Act
_repoMock.Setup(x => x.GetById(studentId)).ReturnsAsync((Student)null);
dynamic result = await _controller.FindStudent(studentId);
var valueFromAnnonymous = result.Value.GetType().GetProperty("text").GetValue(result.Value, null);
//Assert
Assert.NotNull(result);
Assert.Equal("Server error!", valueFromAnnonymous);
}