public void GetButton_IfButtonExist_DoesNotThrow()
{
// Arrange
SimpleT9Keypad sut = new SimpleT9Keypad();
// Act
Action act = () => sut.GetButton('e');
// Assert
act.Should().NotThrow <ArgumentException>();
}
public void GetButton_ReturnsExpectedButton()
{
// Arrange
SimpleT9Keypad sut = new SimpleT9Keypad();
// Act
IT9Button button = sut.GetButton('e');
// Assert
button.Label.Should().Be('3');
}
public void TryGetButton_IfButtonExist_ReturnsTrue()
{
// Arrange
SimpleT9Keypad sut = new SimpleT9Keypad();
// Act
bool exists = sut.TryGetButton('e', out IT9Button button);
// Assert
exists.Should().BeTrue();
button.Label.Should().Be('3');
}
public void TryGetButton_IfButtonDoesNotExist_ReturnsFalse()
{
// Arrange
SimpleT9Keypad sut = new SimpleT9Keypad();
// Act
bool exists = sut.TryGetButton('*', out IT9Button button);
// Assert
exists.Should().BeFalse();
button.Should().BeNull();
}
public void GetButton_IfButtonDoesNotExist_Throws()
{
// Arrange
SimpleT9Keypad sut = new SimpleT9Keypad();
// Act
Action act = () => sut.GetButton('*');
// Assert
act.Should().Throw <ArgumentException>()
.WithMessage("Button with given symbol '*' does not exist.");
}
