public void ThrowArgumentExceptionIfItemNotFoundByRepo()
 {
     // Arrange
     fixture.repositoryMock
     .Setup(m => m.GetByIdAsync(ID))
     .ReturnsAsync((PlannerItem)null);
     // Act
     sut = fixture.Create <EditPlannerItemCommand>();
     // Assert
     Assert.ThrowsAsync <ArgumentException>(() => sut.Execute(ID, editModel));
 }
 public EditPlannerItemCommandShould()
 {
     this.fixture = new PlannerItemsTestFixture();
     sut          = fixture.Create <EditPlannerItemCommand>();
     editModel    = fixture.Create <PlannerItemCreateEditModel>();
 }