public void IsAdvertisementValid_WhenChangingFromFalseToTrue_CallsPropertyChangedEvent()
{
// Arrange
var adModel = GetNewEmptyAdvertisement();
var adViewModel = GetAdvertisementViewModel(adModel);
var eventAssert = new PropertyChangedEventAssert(adModel);
adViewModel.HasErrors.Should().Be(false, "Populated Ad has invalid name");
adViewModel.HasErrors.Should().Be(false, "Populated Ad has invalid text");
// Act
eventAssert.ExpectNothing();
adViewModel.Name = TEST_AD_NAME;
adViewModel.HasErrors.Should().Be(true, "Name is now valid");
adViewModel.IsEntityValid.Should().Be(false, "Ad is still invalid.");
adViewModel.Text = TEST_AD_TEXT;
// Assert
adViewModel.HasErrors.Should().Be(true, "Text should now be valid");
adViewModel.IsEntityValid.Should().Be(true, "If all fields are valid, the Ad is valid");
eventAssert.Expect("Name");
eventAssert.Expect("HasErrors");
eventAssert.Expect("Text");
eventAssert.Expect("HasErrors");
eventAssert.Expect("IsEntityValid");
}
public void Name_WhenModified_PerformsPropertyChangedCallback()
{
// Arrange
const string AD_NAME = "Test ad 1 name";
const string NEW_AD_NAME = "New ad name";
var testAd = new Advertisement {
Name = AD_NAME
};
var eventAssert = new PropertyChangedEventAssert(testAd);
testAd.Name.Should().Be(AD_NAME, "Ad name set properly");
eventAssert.ExpectNothing();
testAd.Name = NEW_AD_NAME;
eventAssert.Expect("Name");
}
public void Name_WhenModifiedFromValidToInvalidChangesHasErrors_PerformsPropertyChangedCallback()
{
// Arrange
const string PAPER_NAME = "Paper 1 name";
const string NEW_PAPER_NAME = "";
var paper = new Newspaper()
{
Name = PAPER_NAME
};
var eventAssert = new PropertyChangedEventAssert(paper);
paper.Name.Should().Be(PAPER_NAME, "Ad name set properly");
eventAssert.ExpectNothing();
paper.Name = NEW_PAPER_NAME;
eventAssert.Expect("Name");
}
public void HasErrors_WhenModified_PerformsPropertyChangedCallbackOnNameAndHasErrors()
{
// Arrange
var adModel = GetNewPopulatedAdvertisement();
var adViewModel = GetAdvertisementViewModel(adModel);
adModel.HasErrors.Should().Be(true, "Name should be valid");
var eventAssert = new PropertyChangedEventAssert(adModel);
eventAssert.ExpectNothing();
// Act
adViewModel.Name = null;
// Assert
eventAssert.Expect("Name");
eventAssert.Expect("HasErrors");
}
public void Name_WhenModified_PerformsPropertyChangedCallback()
{
// Arrange
var paper = GetPopulatedNewspaper();
var vm = GetNewspaperViewModel(paper);
paper.Name.Should().Be(TEST_PAPER_NAME, "Name should be set.");
// Act
var eventAssert = new PropertyChangedEventAssert(paper);
eventAssert.ExpectNothing();
vm.Name = NEW_PAPER_NAME;
// Assert
paper.Name.Should().Be(NEW_PAPER_NAME, "ViewModel should set new name in the model");
eventAssert.Expect("Name");
}
public void Name_WhenModified_PerformsPropertyChangedCallback()
{
// Arrange
var paper = GetPopulatedNewspaper();
var vm = GetNewspaperViewModel(paper);
paper.Name.Should().Be(TEST_PAPER_NAME, "Name should be set.");
// Act
var eventAssert = new PropertyChangedEventAssert(paper);
eventAssert.ExpectNothing();
vm.Name = NEW_PAPER_NAME;
// Assert
paper.Name.Should().Be(NEW_PAPER_NAME, "ViewModel should set new name in the model");
eventAssert.Expect("Name");
}
public void Name_WhenModified_PerformsPropertyChangedCallback()
{
// Arrange
const string PAPER_NAME = "Paper 1 name";
const string NEW_PAPER_NAME = "New paper 1 name";
var paper = new Newspaper() {Name = PAPER_NAME};
var eventAssert = new PropertyChangedEventAssert(paper);
paper.Name.Should().Be(PAPER_NAME, "Ad name set properly");
eventAssert.ExpectNothing();
paper.Name = NEW_PAPER_NAME;
eventAssert.Expect("Name");
}
public void Name_WhenModified_PerformsPropertyChangedCallback()
{
// Arrange
const string AD_NAME = "Test ad 1 name";
const string NEW_AD_NAME = "New ad name";
var testAd = new Advertisement {Name = AD_NAME};
var eventAssert = new PropertyChangedEventAssert(testAd);
testAd.Name.Should().Be(AD_NAME, "Ad name set properly");
eventAssert.ExpectNothing();
testAd.Name = NEW_AD_NAME;
eventAssert.Expect("Name");
}
public void Name_WhenSettingNewValidValue_SetsNewValueInModel()
{
// Arrange
var vm = GetValidNewspaperItemViewModel();
var newName = new String(vm.Name.ToCharArray()) + "_Changed";
var propertyChangedEvent = new PropertyChangedEventAssert(vm);
propertyChangedEvent.ExpectNothing("No events should be pending.");
// Act
vm.Name = newName;
// Assert
vm.Model.Name.Should().Be(newName, "New value has been assigned to the property.");
}
public void Name_WhenSettingNewValidValue_InvokesPropertyChangedOnNameProperty()
{
// Arrange
var vm = GetValidNewspaperItemViewModel();
var newName = new String(vm.Name.ToCharArray()) + "_Changed";
var propertyChangedEvent = new PropertyChangedEventAssert(vm);
propertyChangedEvent.ExpectNothing("No events should be pending.");
// Act
vm.Name = newName;
// Assert
propertyChangedEvent.Expect("Name");
}
public void Name_SetWithSameValueAsInModel_DoesNotInvokePropertyChanged()
{
// Arrange
var vm = GetValidNewspaperItemViewModel();
var currentName = new String(vm.Name.ToCharArray());
var propetyChangedEvent = new PropertyChangedEventAssert(vm);
propetyChangedEvent.ExpectNothing("No events should be pending.");
// Act
vm.Name = currentName;
// Assert
propetyChangedEvent.ExpectNothing(
"No PropertyChanged event should be invoked because the model and assigned values are equal.");
}
public void Text_WhenSettingNewValidValue_SetsNewValueInModel()
{
// Arrange
var vm = GetValidAdvertisementItemViewModel();
var newText = new String(vm.Text.ToCharArray()) + "_Changed";
var propertyChangedEvent = new PropertyChangedEventAssert(vm);
propertyChangedEvent.ExpectNothing("No events should be pending.");
// Act
vm.Text = newText;
// Assert
vm.Model.Text.Should().Be(newText, "New value has been assigned to the property.");
}
public void Text_WhenSettingNewValidValue_InvokesPropertyChangedOnNameProperty()
{
// Arrange
var vm = GetValidAdvertisementItemViewModel();
var newText = new String(vm.Text.ToCharArray()) + "_Changed";
var propertyChangedEvent = new PropertyChangedEventAssert(vm);
propertyChangedEvent.ExpectNothing("No events should be pending.");
// Act
vm.Text = newText;
// Assert
propertyChangedEvent.Expect("Text");
}