public void ShouldRenderTeachers()
{
// given
TeachersComponentState expectedState =
TeachersComponentState.Content;
List <TeacherView> randomTeacherViews =
CreateRandomTeacherViews();
List <TeacherView> retrievedTeacherViews =
randomTeacherViews;
List <TeacherView> expectedTeacherViews =
retrievedTeacherViews;
this.teacherViewServiceMock.Setup(service =>
service.RetrieveAllTeacherViewsAsync())
.ReturnsAsync(retrievedTeacherViews);
// when
this.renderedTeachersComponent =
RenderComponent <TeachersComponent>();
// then
this.renderedTeachersComponent.Instance.State.Should()
.Be(expectedState);
this.renderedTeachersComponent.Instance.TeacherViews.Should()
.BeEquivalentTo(expectedTeacherViews);
this.renderedTeachersComponent.Instance.Grid.Should()
.NotBeNull();
this.renderedTeachersComponent.Instance.Grid.DataSource.Should()
.BeEquivalentTo(expectedTeacherViews);
this.renderedTeachersComponent.Instance.ErrorMessage.Should()
.BeNull();
this.renderedTeachersComponent.Instance.ErrorLabel.Should()
.BeNull();
this.teacherViewServiceMock.Verify(service =>
service.RetrieveAllTeacherViewsAsync(),
Times.Once);
this.teacherViewServiceMock.VerifyNoOtherCalls();
}
public void ShouldInitComponent()
{
// given
TeachersComponentState expectedState =
TeachersComponentState.Loading;
// when
var initialTeachersComponent =
new TeachersComponent();
// then
initialTeachersComponent.TeacherViewService.Should().BeNull();
initialTeachersComponent.State.Should().Be(expectedState);
initialTeachersComponent.TeacherViews.Should().BeNull();
initialTeachersComponent.Grid.Should().BeNull();
initialTeachersComponent.ErrorMessage.Should().BeNull();
initialTeachersComponent.ErrorLabel.Should().BeNull();
}
public void ShouldRenderErrorIfExceptionOccurs()
{
// given
TeachersComponentState expectedState =
TeachersComponentState.Error;
string randomMessage = GetRandomMessage();
string exceptionErrorMessage = randomMessage;
string expectedErrorMessage = exceptionErrorMessage;
var exception = new Exception(exceptionErrorMessage);
this.teacherViewServiceMock.Setup(service =>
service.RetrieveAllTeacherViewsAsync())
.ThrowsAsync(exception);
// when
this.renderedTeachersComponent =
RenderComponent <TeachersComponent>();
// then
this.renderedTeachersComponent.Instance.State.Should()
.Be(expectedState);
this.renderedTeachersComponent.Instance.ErrorMessage.Should()
.Be(expectedErrorMessage);
this.renderedTeachersComponent.Instance.ErrorLabel.Should()
.NotBeNull();
this.renderedTeachersComponent.Instance.ErrorLabel.Value.Should()
.Be(expectedErrorMessage);
this.renderedTeachersComponent.Instance.TeacherViews.Should()
.BeNull();
this.renderedTeachersComponent.Instance.Grid.Should()
.BeNull();
this.teacherViewServiceMock.Verify(service =>
service.RetrieveAllTeacherViewsAsync(),
Times.Once);
this.teacherViewServiceMock.VerifyNoOtherCalls();
}
