public void ContextualCommandsCollection_HasCommands_ChangedOnCollectionChange()
{
// Setup
var testSubject = new ContextualCommandsCollection();
int hasCommandsChangedCounter = 0;
((INotifyPropertyChanged)testSubject).PropertyChanged += (o, e) =>
{
if (e.PropertyName == "HasCommands")
{
hasCommandsChangedCounter++;
}
};
// Case 1: Add command
var cmd1 = new ContextualCommandViewModel(this, new RelayCommand(() => { }));
var cmd2 = new ContextualCommandViewModel(this, new RelayCommand(() => { }));
// Act
testSubject.Add(cmd1);
testSubject.Add(cmd2);
// Verify
Assert.AreEqual(2, hasCommandsChangedCounter, "Adding a command should update HasCommands");
// Case 2: Remove command
// Act
testSubject.Remove(cmd1);
// Verify
Assert.AreEqual(3, hasCommandsChangedCounter, "Adding a command should update HasCommands");
// Case 3: Update command
// Act
testSubject[0] = cmd1;
// Verify
Assert.AreEqual(4, hasCommandsChangedCounter, "Adding a command should update HasCommands");
}
public void ContextualCommandsCollection_HasCommands()
{
// Arrange
var testSubject = new ContextualCommandsCollection();
// Case 1: no commands
// Act + Assert
testSubject.HasCommands.Should().BeFalse();
// Case 2: has commands
testSubject.Add(new ContextualCommandViewModel(this, new RelayCommand(() => { })));
// Act + Assert
testSubject.HasCommands.Should().BeTrue();
}
public void ContextualCommandsCollection_HasCommands()
{
// Setup
var testSubject = new ContextualCommandsCollection();
// Case 1: no commands
// Act + Verify
Assert.IsFalse(testSubject.HasCommands);
// Case 2: has commands
testSubject.Add(new ContextualCommandViewModel(this, new RelayCommand(()=> { })));
// Act + Verify
Assert.IsTrue(testSubject.HasCommands);
}
public void ContextualCommandsCollection_HasCommands()
{
// Setup
var testSubject = new ContextualCommandsCollection();
// Case 1: no commands
// Act + Verify
Assert.IsFalse(testSubject.HasCommands);
// Case 2: has commands
testSubject.Add(new ContextualCommandViewModel(this, new RelayCommand(() => { })));
// Act + Verify
Assert.IsTrue(testSubject.HasCommands);
}
public void ContextualCommandsCollection_HasCommands_ChangedOnCollectionChange()
{
// Arrange
var testSubject = new ContextualCommandsCollection();
int hasCommandsChangedCounter = 0;
((INotifyPropertyChanged)testSubject).PropertyChanged += (o, e) =>
{
if (e.PropertyName == "HasCommands")
{
hasCommandsChangedCounter++;
}
};
// Case 1: Add command
var cmd1 = new ContextualCommandViewModel(this, new RelayCommand(() => { }));
var cmd2 = new ContextualCommandViewModel(this, new RelayCommand(() => { }));
// Act
testSubject.Add(cmd1);
testSubject.Add(cmd2);
// Assert
hasCommandsChangedCounter.Should().Be(2, "Adding a command should update HasCommands");
// Case 2: Remove command
// Act
testSubject.Remove(cmd1);
// Assert
hasCommandsChangedCounter.Should().Be(3, "Adding a command should update HasCommands");
// Case 3: Update command
// Act
testSubject[0] = cmd1;
// Assert
hasCommandsChangedCounter.Should().Be(4, "Adding a command should update HasCommands");
}