public void When_store_is_false_the_register_should_not_be_set()
{
// Arrange
var register2Bit = new Register2Bit();
// Act
var output = register2Bit.Do(false, new Bit2(true, true), false);
// Assert
output.High.Should().BeFalse();
output.Low.Should().BeFalse();
}
public void It_is_impossible_to_store_data_at_a_clocktick()
{
// Arrange
var register2Bit = new Register2Bit();
// Act
var data = new Bit2(true, true);
var output = register2Bit.Do(true, data, true);
// Assert
output.High.Should().BeFalse();
output.Low.Should().BeFalse();
}
public void When_store_is_true_and_clock_is_false_the_previous_value_should_be_returned()
{
// Arrange
var register2Bit = new Register2Bit();
// Act
var data = new Bit2(true, true);
var output = register2Bit.Do(true, data, false);
// Assert
output.High.Should().BeFalse();
output.Low.Should().BeFalse();
}
public void After_storing_data_a_clocktick_returns_the_new_data()
{
// Arrange
var register2Bit = new Register2Bit();
// Act
var data = new Bit2(true, true);
register2Bit.Do(true, data, false); // store data
var output = register2Bit.Do(false, new Bit2(false, false), true); // return data because clock==true
// Assert
output.High.Should().BeTrue();
output.Low.Should().BeTrue();
}
