public void GivenASheetOfPaperWithWritingOnIt_WhenEraseIsCalledTwice_ThenTheLastOccurenceOfTheTextIsRemovedThenTheNextOccurence()
{
var pencil = new Pencil();
var paper = new Paper("How much wood would a woodchuck chuck if a woodchuck could chuck wood?");
pencil.EraseOn("chuck", paper);
pencil.EraseOn("chuck", paper);
Assert.Equal("How much wood would a woodchuck chuck if a wood could wood?", paper.Show());
}
public void GivenAPencil_WhenInstructedToErase_ThenThePencilWillCallEraseOnTheSurface()
{
_paperMock.Setup(t => t.Show()).Returns("Food");
var sequence = new MockSequence();
_paperMock.InSequence(sequence).Setup(s => s.Erase(3));
_paperMock.InSequence(sequence).Setup(s => s.Erase(2));
_paperMock.InSequence(sequence).Setup(s => s.Erase(1));
_paperMock.InSequence(sequence).Setup(s => s.Erase(0));
_sut.EraseOn("Food", _paperMock.Object);
_paperMock.Verify(t => t.Erase(3), Times.Once);
_paperMock.Verify(t => t.Erase(2), Times.Once);
_paperMock.Verify(t => t.Erase(1), Times.Once);
_paperMock.Verify(t => t.Erase(0), Times.Once);
}
public void GivenASheetOfPaperWithWritingOnIt_WhenTheEraserIsLow_ThenPartialWordsAreErased()
{
var pencil = new Pencil(eraserDurability: 3);
var paper = new Paper("Buffalo Bill");
pencil.EraseOn("Bill", paper);
Assert.Equal("Buffalo B ", paper.Show());
}
public void GivenAPenAndPaperWithInitialText_WhenThePencilErasesAString_ThenTheTextIsReplaceWithSpacesOnThePaper()
{
var pencil = new Pencil();
var paper = new Paper("She sells sea shells");
pencil.EraseOn("shells", paper);
Assert.Equal("She sells sea ", paper.Show());
}
public void GivenAPencil_WhenEraseIsCalledWithNoDurability_ThenNothingWillHappen()
{
_sut = new Pencil(eraserDurability: 0);
_paperMock.Setup(t => t.Show()).Returns("here");
_sut.EraseOn("here", _paperMock.Object);
_paperMock.Verify(t => t.Erase(0), Times.Never);
_paperMock.Verify(t => t.Erase(1), Times.Never);
_paperMock.Verify(t => t.Erase(2), Times.Never);
_paperMock.Verify(t => t.Erase(3), Times.Never);
}
public void GivenAPencil_WhenEraseIsCalledWithLowDurability_ThenOnlyPartialIsErased()
{
_sut = new Pencil(eraserDurability: 2);
_paperMock.Setup(t => t.Show()).Returns("here");
var sequence = new MockSequence();
_paperMock.InSequence(sequence).Setup(s => s.Erase(3));
_paperMock.InSequence(sequence).Setup(s => s.Erase(2));
_sut.EraseOn("here", _paperMock.Object);
_paperMock.Verify(t => t.Erase(0), Times.Never);
_paperMock.Verify(t => t.Erase(1), Times.Never);
}
