public static void EraseAWord(Pencil pencil, PaperModel paper)
{
Console.WriteLine(paper.WrittenContent);
Console.WriteLine("What word would you like to erase?");
pencil.UseEraser(Console.ReadLine(), paper);
Console.WriteLine(paper.WrittenContent);
ReplaceErasedWord(pencil, paper);
}
public void ErasingTheSameWordTwiceErasesTheLastTwoInstancesOfTheWord()
{
//Arrange
PeacockQuill = new Pencil(1);
Parchment = new PaperModel()
{
WrittenContent = "wizarding world of wizards world"
};
var wordToBeRemoved = "world";
var instacesOfWordAfterTwoRemovals = 0;
//Act
PeacockQuill.UseEraser(wordToBeRemoved, Parchment);
PeacockQuill.UseEraser(wordToBeRemoved, Parchment);
//Assert
Assert.AreEqual(instacesOfWordAfterTwoRemovals, Regex.Matches(Parchment.WrittenContent, wordToBeRemoved).Count);
}
public void NoNewWordsMayBeErasedOnceEraserWornOut()
{
//Arrange
PeacockQuill = new Pencil(0, 4);
Parchment = new PaperModel()
{
WrittenContent = "Maple syrup is tree marinade"
};
var firstWordToBeDeleted = "tree";
var secondWordToBeDeleted = "Maple";
var expectedInstancesOfFirstWord = 0;
var expectedInstancesOfSecondWord = 1;
//Act
PeacockQuill.UseEraser(firstWordToBeDeleted, Parchment);
PeacockQuill.UseEraser(secondWordToBeDeleted, Parchment);
//Assert
Assert.AreEqual(expectedInstancesOfFirstWord, Regex.Matches(Parchment.WrittenContent, firstWordToBeDeleted).Count);
Assert.AreEqual(expectedInstancesOfSecondWord, Regex.Matches(Parchment.WrittenContent, secondWordToBeDeleted).Count);
}
public void ProgramDoesntBreakIfWordToBeErasedDoesntExist()
{
//Arrange
PeacockQuill = new Pencil(1);
Parchment = new PaperModel()
{
WrittenContent = "wizarding world of wizards world"
};
var wordToBeRemoved = "gopher";
var instacesOfWordAfterTwoRemovals = 0;
PeacockQuill.UseEraser(wordToBeRemoved, Parchment);
//Assert
Assert.AreEqual(instacesOfWordAfterTwoRemovals, Regex.Matches(Parchment.WrittenContent, wordToBeRemoved).Count);
}
public void ReplaceWordsInTheMiddleOfTheSentence()
{
//Arrange
PeacockQuill = new Pencil(1);
Parchment = new PaperModel()
{
WrittenContent = "Better be Gryffidor"
};
var wordToRemove = "be";
var instancesOfWordAfterRemoval = 0;
//Act
PeacockQuill.UseEraser(wordToRemove, Parchment);
//Assert
Assert.AreEqual(instancesOfWordAfterRemoval, Regex.Matches(Parchment.WrittenContent, wordToRemove).Count);
}
public void EraserWithZeroDurabilityDoesntErase()
{
//Arrange
PeacockQuill = new Pencil(1, 0);
Parchment = new PaperModel()
{
WrittenContent = "Haha you can't erase me"
};
var wordToBeErased = "me";
var instancesOfWordToBeErased = 1;
//Act
PeacockQuill.UseEraser(wordToBeErased, Parchment);
//Assert
Assert.AreEqual(instancesOfWordToBeErased, Regex.Matches(Parchment.WrittenContent, wordToBeErased).Count);
}
public void RemoveLastInstanceOfGivenWord()
{
//Arrange
PeacockQuill = new Pencil(1);
Parchment = new PaperModel()
{
WrittenContent = "I like coffee wakes me up makes me fast I love coffee"
};
var wordToRemove = "coffee";
var numberOfCoffeesAfterEraser = 1;
//Act
PeacockQuill.UseEraser(wordToRemove, Parchment);
//Assert
Assert.AreEqual(numberOfCoffeesAfterEraser, Regex.Matches(Parchment.WrittenContent, wordToRemove).Count);
}
public void VerifyLowDurabilityErasesExpectedLetters()
{
//Arrange
PeacockQuill = new Pencil(0, 2);
Parchment = new PaperModel()
{
WrittenContent = "You might know me"
};
var wordToBeErased = "know";
var lettersLeftWhenEraserRunsOut = "kn ";
var expectedInstancesOfHalfWords = 1;
//Act
PeacockQuill.UseEraser(wordToBeErased, Parchment);
//Assert
Assert.AreEqual(expectedInstancesOfHalfWords, Regex.Matches(Parchment.WrittenContent, lettersLeftWhenEraserRunsOut).Count);
Assert.AreNotEqual(expectedInstancesOfHalfWords, Regex.Matches(Parchment.WrittenContent, wordToBeErased).Count);
}
public void IndexOfLastWordErasedSavedAsClassProperty()
{
//Arrange
var stringBeingWritten = "This cantelope is tasty";
var expectedIndexPosition = 5;
var wordToBeDeleted = "cantelope";
NumberTwoPencil = new Pencil();
Paper = new PaperModel()
{
WrittenContent = stringBeingWritten
};
//Act
NumberTwoPencil.UseEraser(wordToBeDeleted, Paper);
//Assert
Assert.AreEqual(expectedIndexPosition, NumberTwoPencil.IndexOfLastErasedWord);
}
public void ReplaceErasedWordWithWhiteSpace()
{
//Arrange
PeacockQuill = new Pencil(1);
Parchment = new PaperModel()
{
WrittenContent = "Troll in the dungeon, thought you ought to know"
};
var wordToRemove = "know";
var newWhiteSpace = " ";
var instancesOfNewWhiteSpace = 1;
//Act
PeacockQuill.UseEraser(wordToRemove, Parchment);
//Assert
Assert.AreEqual(instancesOfNewWhiteSpace, Regex.Matches(Parchment.WrittenContent, newWhiteSpace).Count);
Assert.AreNotEqual(instancesOfNewWhiteSpace, Regex.Matches(Parchment.WrittenContent, wordToRemove).Count);
}
public void EraserWithDurabilityOfTwoErasesTwoLetters()
{
//Arrange
PeacockQuill = new Pencil(1, 2);
Parchment = new PaperModel()
{
WrittenContent = "You don't know me"
};
var wordToBeErased = "me";
var expectedInstancesOfDeletedWord = 0;
var expectedEraserDurability = 0;
//Act
PeacockQuill.UseEraser(wordToBeErased, Parchment);
//Assert
Assert.AreEqual(expectedInstancesOfDeletedWord, Regex.Matches(Parchment.WrittenContent, wordToBeErased).Count);
Assert.AreEqual(expectedEraserDurability, PeacockQuill.Eraser.EraserDurability);
}
public void LettersOverlappedByReplacementWordReplacedWithSymbol()
{
//Arrange
var stringBeingWritten = "This ham is tasty";
var wordToBeDeleted = "ham";
var replacementWord = "steak";
var expectedNewString = "This stea@s tasty";
NumberTwoPencil = new Pencil();
Paper = new PaperModel()
{
WrittenContent = stringBeingWritten
};
//Act
NumberTwoPencil.UseEraser(wordToBeDeleted, Paper);
NumberTwoPencil.ReplaceErasedWord(replacementWord, Paper);
//Assert
StringAssert.AreEqualIgnoringCase(expectedNewString, Paper.WrittenContent);
}
public void ReplacementWordOfSameLengthTakesPlaceOfWhitespace()
{
//Arrange
var stringBeingWritten = "This ham is tasty";
var wordToBeDeleted = "ham";
var replacementWord = "egg";
var expectedNewString = "This egg is tasty";
NumberTwoPencil = new Pencil();
Paper = new PaperModel()
{
WrittenContent = stringBeingWritten
};
//Act
NumberTwoPencil.UseEraser(wordToBeDeleted, Paper);
NumberTwoPencil.ReplaceErasedWord(replacementWord, Paper);
//Assert
StringAssert.AreEqualIgnoringCase(expectedNewString, Paper.WrittenContent);
}
public void InsertWordAtStoredIndex()
{
//Arrange
var stringBeingWritten = "This ham is tasty";
var expectedIndexPosition = 5;
var wordToBeDeleted = "ham";
var replacementWord = "egg";
NumberTwoPencil = new Pencil();
Paper = new PaperModel()
{
WrittenContent = stringBeingWritten
};
//Act
NumberTwoPencil.UseEraser(wordToBeDeleted, Paper);
NumberTwoPencil.ReplaceErasedWord(replacementWord, Paper);
//Assert
Assert.AreEqual(expectedIndexPosition, Paper.WrittenContent.IndexOf(replacementWord));
}
