public void WhenAPencilErasesTextItReplacesTextWithWhiteSpace()
{
paper.AddContent("Now You See Me");
pencil.Erase(paper, "See");
Assert.IsTrue(!paper.content.Contains("See"));
}
public void PencilEditMethodDoesNotAlterPaperTextPropertyWhenRemainingEraserIsZeroTest()
{
paper.Text = "test";
pencil.RemainingEraser = 0;
pencil.Erase(paper, "test", out int startIndex);
Assert.AreEqual("test", paper.Text);
}
public void EditOccursAtLastEditIndexSetWhenEraseHasBeenCalledMultipleTimes()
{
Pencil pencil = new Pencil(5, 10, 10);
String paper = pencil.Erase("Mary had a little lamb", "had");
paper = pencil.Erase(paper, "lamb");
Assert.Equal("Mary a little goat", pencil.Edit(paper, "goat", pencil.EditIndex));
}
public void WhenErasingTwiceTheLastTwoWordsAreRemoved()
{
var pencil = new Pencil();
var paper = new Paper();
pencil.Write(ErasingTestText, ref paper);
pencil.Erase("chuck", ref paper);
pencil.Erase("chuck", ref paper);
Assert.Equal(paper.Content, "How much wood would a woodchuck chuck if a wood could wood?");
}
public void WhenAPencilErasesTextTwiceTheLastTwoOccurrencesAreReplacedWithSpaces()
{
var pencil = new Pencil(250, 3, 200);
pencil.Write("How much wood would a woodchuck chuck if a woodchuck could chuck wood?");
pencil.Erase("chuck");
pencil.Erase("chuck");
Assert.AreEqual("How much wood would a woodchuck chuck if a wood could wood?",
pencil.Paper);
}
public void WhenErasingTheEraserStopsWorkingWhenCompletelyDegradedWithMultipleErases()
{
var pencil = new Pencil(1000, 5, 10);
var paper = new Paper();
pencil.Write(ErasingTestText, ref paper);
pencil.Erase("wood", ref paper);
pencil.Erase("wood", ref paper);
pencil.Erase("wood", ref paper);
Assert.Equal("How much wood would a wo chuck chuck if a chuck could chuck ?", paper.Content);
}
public void WhenErasePassedStringofTwoCharsEraserDurabilityDecreasesByTwo()
{
Pencil pencil = new Pencil(5, 20, 20, "ab");
pencil.Erase("ab");
Assert.AreEqual(18, pencil.EraserDurability);
}
public void WhenEditingIfPointDurabilityIsExhaustedPencilWritesWhitespaces()
{
Pencil pencil = new Pencil(3, 10, 10);
String paper = pencil.Erase("Mary had a little lamb", "had a");
Assert.Equal("Mary kic little lamb", pencil.Edit(paper, "kicked", pencil.EditIndex));
}
public void WhenEditingPencilDurabilityIsImpactedByCharacterCase()
{
Pencil pencil = new Pencil(4, 10, 10);
String paper = pencil.Erase("Mary had a little lamb", "Mary had");
Assert.Equal("Joh a little lamb", pencil.Edit(paper, "John", pencil.EditIndex));
}
public void WhenAPencilHasInsufficientEraserDurabilityItErasesAsManyCharactersAsItHasDurability()
{
Pencil pencil = new Pencil(10, 5, 5);
String paper = "Mary had a little lamb";
Assert.Equal("Mary had a l lamb", pencil.Erase(paper, "little"));
}
public void AfterErasingPartialWordWordTheEditIndexPropertyIsSetTwo()
{
Pencil pencil = new Pencil(10, 10, 3);
String paper = pencil.Erase("Mary had a little lamb", "Mary");
Assert.Equal(1, pencil.EditIndex);
}
public void AfterErasingEntireWordTheEditIndexPropertyIsSet()
{
Pencil pencil = new Pencil(5, 5, 5);
String paper = pencil.Erase("Mary had a little lamb", "lamb");
Assert.Equal(18, pencil.EditIndex);
}
public void WhenErasePassedTextToEraseWithTwoInstancesofSameWordRemovesLastInstanceOfWordFromString()
{
Pencil pencil = new Pencil(5, 30, 30, "how much wood can a woodchuck");
pencil.Erase("wood");
Assert.AreEqual("how much wood can a chuck", pencil.Paper);
}
public void AfterErasingWholePhraseWithWhitespacesTheEditIndexPropertyIsSet()
{
Pencil pencil = new Pencil(20, 20, 10);
String paper = pencil.Erase("Mary had a little lamb", "had a little");
Assert.Equal(5, pencil.EditIndex);
}
public void WhenErasePassedStringItErasesOppositeOrderStringWasWrittenAndReplacesWithWhiteSpace()
{
Pencil pencil = new Pencil(5, 20, 1, "Bill");
pencil.Erase("Bill");
Assert.AreEqual("Bil ", pencil.Paper);
}
public void WhenPencilEraserIsZeroAndItErases_PaperTextIsUnchanged()
{
pencil = new Pencil(defaultDurability, defaultLength, 0);
sheet = new Paper("Nothing ever changes");
pencil.Erase("changes", sheet);
Assert.AreEqual("Nothing ever changes", sheet.Text);
}
public void WhenAPencilErasesRepeatedTextInASingleWordEraseTheLastOccurance()
{
pencil = new Pencil(100, 8, 5);
paper.AddContent("BamBam");
pencil.Erase(paper, "Bam");
Assert.AreEqual("Bam ", paper.content);
}
public void WhenErasePassedWhiteSpaceEraserDurabilityIsNotAffectedByWhiteSpace()
{
Pencil pencil = new Pencil(5, 20, 20, "test test");
string textToErase = " ";
pencil.Erase(textToErase);
Assert.AreEqual(18, pencil.EraserDurability);
}
public void WhenErasePassedOneCharEraserDurabilityDecreasesByOne()
{
Pencil pencil = new Pencil(5, 20, 20, "a");
string textToErase = "a";
pencil.Erase(textToErase);
Assert.AreEqual(19, pencil.EraserDurability);
}
public void WhenPencilErases_EraserIsNotReducedByWhitespaceCharacters()
{
pencil = new Pencil(defaultDurability, defaultLength, defaultEraser);
sheet = new Paper("Unless you are trying to change nothing");
pencil.Erase("trying to change", sheet);
Assert.AreEqual(defaultEraser - 14, pencil.Eraser);
}
public void WhenPencilErases_EraserIsReducedByNumOfNonwhitespaceCharacters()
{
pencil = new Pencil(defaultDurability, defaultLength, defaultEraser);
sheet = new Paper("Except when they do");
pencil.Erase("when", sheet);
Assert.AreEqual(defaultEraser - 4, pencil.Eraser);
}
public void WhenAPencilErasesItDegradesByOne()
{
pencil = new Pencil(100, 8, 5);
paper.AddContent("Erase");
pencil.Erase(paper, "Erase");
Assert.AreEqual(0, pencil.eraserDurability);
}
public void WhenAPencilErasesBeyondItsDurabilityDoNotRemoveRemainingText()
{
pencil = new Pencil(100, 8, 5);
paper.AddContent("What Remains");
pencil.Erase(paper, "What Remains");
Assert.AreEqual("What Re ", paper.content);
}
public void Pencil_Erase_Empty_Paper_Does_Nothing()
{
var pncl = new Pencil(1000, 10, 50);
var ppr = new Paper();
Assert.That(pncl.Erase(ppr, "zap"), Is.EqualTo(false));
Assert.That(ppr.Text, Is.EqualTo(""));
}
public void Pencil_Erase_White_Space_Doesnt_Degrade_Eraser()
{
var pncl = new Pencil(1000, 10, 50);
var ppr = new Paper();
pncl.Write(ppr, "The quick brown fox jumped over the lazy dog");
Assert.That(pncl.Erase(ppr, "fox jumped over"), Is.EqualTo(true));
Assert.That(pncl.EraserLength, Is.EqualTo(37));
}
public void Pencil_Erase_Long_Text_Degrades_Eraser()
{
var pncl = new Pencil(10000, 10, 10000);
var ppr = new Paper();
pncl.Write(ppr, new string('a', 9000));
Assert.That(pncl.Erase(ppr, new string('a', 8500)), Is.EqualTo(true));
Assert.That(pncl.EraserLength, Is.EqualTo(1500));
}
public void Pencil_Erase_Short_Text_Degrades_Eraser()
{
var pncl = new Pencil(1000, 10, 50);
var ppr = new Paper();
pncl.Write(ppr, "The quick brown fox jumped over the lazy dog");
Assert.That(pncl.Erase(ppr, "v"), Is.EqualTo(true));
Assert.That(pncl.EraserLength, Is.EqualTo(49));
}
public void Pencil_Erase_Null_Text()
{
var pncl = new Pencil(1000, 10, 50);
var ppr = new Paper();
pncl.Write(ppr, "The quick brown fox jumped over the lazy dog");
Assert.That(pncl.Erase(ppr, null), Is.EqualTo(true));
Assert.That(ppr.Text, Is.EqualTo("The quick brown fox jumped over the lazy dog"));
}
public void Pencil_Erase_Complete_Text()
{
var pncl = new Pencil(10000, 10, 10000);
var ppr = new Paper();
pncl.Write(ppr, LorumIpsum.Text);
Assert.That(pncl.Erase(ppr, LorumIpsum.Text), Is.EqualTo(true));
Assert.That(ppr.Text, Is.EqualTo(new string(' ', LorumIpsum.Text.Length)));
}
public void Pencil_Erase_Long_Text()
{
var pncl = new Pencil(10000, 10, 10000);
var ppr = new Paper();
pncl.Write(ppr, LorumIpsum.Text);
Assert.That(pncl.Erase(ppr, LorumIpsum.MiddleChunk), Is.EqualTo(true));
Assert.That(ppr.Text, Is.EqualTo(LorumIpsum.Text.Replace(LorumIpsum.MiddleChunk, new string(' ', LorumIpsum.MiddleChunk.Length))));
}