public void ShouldReplaceMatchingTextWithCorrectAmountOfSpaces(string testWord, string expected)
{
IPencil pencil = GetPencil();
IPaper paper = GetPaper(testWord);
pencil.Erase(paper, testWord);
Assert.Equal(expected, paper.Text);
}
public void ShouldNeverBecomeNegative(string sentence, int startEraserDurability)
{
const int expectedEraserDurability = 0;
IPencil pencil = GetPencil(eraserDurability: startEraserDurability);
IPaper paper = GetPaper(sentence);
pencil.Erase(paper, sentence);
Assert.Equal(expectedEraserDurability, pencil.CurrentEraserDurability);
}
public void ShouldRemoveMatchingText()
{
const string testWord = "word";
IPencil pencil = GetPencil();
IPaper paper = GetPaper(testWord);
pencil.Erase(paper, testWord);
Assert.DoesNotContain(testWord, paper.Text);
}
public void ShouldDegradeCorrectlyForManyCharacters(string eraseMatch)
{
const int startEraserDurability = 50;
int expectedEraserDurability = startEraserDurability - eraseMatch.Length;
IPencil pencil = GetPencil(eraserDurability: startEraserDurability);
IPaper paper = GetPaper(eraseMatch);
pencil.Erase(paper, eraseMatch);
Assert.Equal(expectedEraserDurability, pencil.CurrentEraserDurability);
}
public void ShouldDoNothingWithNoDurability()
{
const string testSentence = " \v0?>9\n<8:6 (*4&\t^2# 1$% ";
const int eraserDurability = 0;
IPencil pencil = GetPencil(eraserDurability: eraserDurability);
IPaper paper = GetPaper(testSentence);
pencil.Erase(paper, testSentence);
Assert.Equal(testSentence, paper.Text);
}
public void ShouldReplaceWhitespaceWithSpaces()
{
const string testWhitespace = " \t\r\n\f\v ";
const string expected = " ";
IPencil pencil = GetPencil();
IPaper paper = GetPaper(testWhitespace);
pencil.Erase(paper, testWhitespace);
Assert.Equal(expected, paper.Text);
}
public void ShouldDegradeCorrectlyForMixedCharactersAndWhitespace(string mixedString, int degradeAmount)
{
const int startEraserDurability = 50;
int expectedEraserDurability = startEraserDurability - degradeAmount;
IPencil pencil = GetPencil(eraserDurability: startEraserDurability);
IPaper paper = GetPaper(mixedString);
pencil.Erase(paper, mixedString);
Assert.Equal(expectedEraserDurability, pencil.CurrentEraserDurability);
}
public void ShouldDoNothingIfNoMatchIsFound()
{
const string testSentence = "Not this or this";
const string eraseWord = "test";
IPencil pencil = GetPencil();
IPaper paper = GetPaper(testSentence);
pencil.Erase(paper, eraseWord);
Assert.Equal(testSentence, paper.Text);
}
public void ShouldErasePartOfMatchingWord()
{
const string testWord = "word";
const string expectedWord = "wo ";
const int eraserDurability = 2;
IPencil pencil = GetPencil(eraserDurability: eraserDurability);
IPaper paper = GetPaper(testWord);
pencil.Erase(paper, testWord);
Assert.Equal(expectedWord, paper.Text);
}
public void ShouldReplaceOnlyMatchingText()
{
const string paperText = "this is a test sentence";
const string eraseWord = "test";
const string expectedSentence = "this is a sentence";
IPencil pencil = GetPencil();
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, eraseWord);
Assert.Equal(expectedSentence, paper.Text);
}
public void ShouldMatchOnCaseWhenMatching()
{
const string paperText = "This but not this";
const string eraseWord = "This";
const string expectedSentence = " but not this";
IPencil pencil = GetPencil();
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, eraseWord);
Assert.Equal(expectedSentence, paper.Text);
}
public void ShouldOnlyReplaceTheLastMatch()
{
const string paperText = "Not this but this";
const string eraseWord = "this";
const string expectedSentence = "Not this but ";
IPencil pencil = GetPencil();
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, eraseWord);
Assert.Equal(expectedSentence, paper.Text);
}
public void ShouldNotEraseMatchingWhitespaceWhenDurabilityRunsOut()
{
const string paperText = "This\n\n\nis a sentence.";
const string eraseMatch = "\n\n\nis a";
const string expectedSentence = "This\n\n\n sentence.";
const int eraserDurability = 3;
IPencil pencil = GetPencil(eraserDurability: eraserDurability);
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, eraseMatch);
Assert.Equal(expectedSentence, paper.Text);
}
public void ShouldEraseCorrectPartialMatch()
{
const string paperText = "things running";
const string eraseWord = "thing";
const string expectedSentence = "th s running";
const int eraserDurability = 3;
IPencil pencil = GetPencil(eraserDurability: eraserDurability);
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, eraseWord);
Assert.Equal(expectedSentence, paper.Text);
}
public void ShouldEraseCorrectPartOfMatchThatIncludesWhitespace()
{
const string paperText = "This is a test sentence.";
const string eraseSection = "is a test";
const string expectedSentence = "This i sentence.";
const int eraserDurability = 6;
IPencil pencil = GetPencil(eraserDurability: eraserDurability);
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, eraseSection);
Assert.Equal(expectedSentence, paper.Text);
}
public void ShouldErasePartOfMatchingWordInSentence()
{
const string paperText = "This is a word in a sentence.";
const string testWord = "word";
const string expectedSentence = "This is a wo in a sentence.";
const int eraserDurability = 2;
IPencil pencil = GetPencil(eraserDurability: eraserDurability);
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, testWord);
Assert.Equal(expectedSentence, paper.Text);
}
public void ShouldDegradeByOneWhenErasingOneCharacter()
{
const string paperText = "This is a sentence";
const string eraseLetter = "a";
const int startEraserDurability = 5;
const int expectedEraserDurability = 4;
IPencil pencil = GetPencil(eraserDurability: startEraserDurability);
IPaper paper = GetPaper(paperText);
pencil.Erase(paper, eraseLetter);
Assert.Equal(expectedEraserDurability, pencil.CurrentEraserDurability);
}
