public void ShouldNotAllowLengthToBecomeNegative()
{
const int startLength = 0;
const int expectedLength = 0;
IPencil pencil = GetPencil(length: startLength);
pencil.Sharpen();
Assert.Equal(expectedLength, pencil.CurrentLength);
}
public void ShouldReducePencilLengthByOne()
{
const int startLength = 5;
const int expectedLength = 4;
IPencil pencil = GetPencil(length: startLength);
pencil.Sharpen();
Assert.Equal(expectedLength, pencil.CurrentLength);
}
public void ShouldSharpenToThePositiveValueForNegativeDurability()
{
const int startPointDurability = -10;
const int expectedPointDurability = 10;
IPencil pencil = GetPencil(pointDurability: startPointDurability);
pencil.Sharpen();
Assert.Equal(expectedPointDurability, pencil.CurrentPointDurability);
}
public void ShouldResetDurabilityToOriginalValue()
{
const string testSentence = "Text to waste pencil durability for testing sharpening abilities";
const int pointDurability = 100;
IPencil pencil = GetPencil(pointDurability: pointDurability);
pencil.Write(GetPaper(), testSentence);
pencil.Sharpen();
Assert.Equal(pointDurability, pencil.CurrentPointDurability);
}
public void ShouldNotResetDurabilityWhenZeroLength()
{
const string testSentence = "Keep it simple";
const int length = 0;
const int startPointDurability = 100;
const int expectedPointDurability = 87;
IPencil pencil = GetPencil(pointDurability: startPointDurability, length: length);
pencil.Write(GetPaper(), testSentence);
pencil.Sharpen();
Assert.Equal(expectedPointDurability, pencil.CurrentPointDurability);
}