public void PassEmptyString()
{
var result = new CodeLine(string.Empty, TabCount);
result.TabCount.ShouldEqual(0);
result.Line.ShouldEqual(string.Empty);
}
public void StartsWithSpace_TabCountZero()
{
var result = new CodeLine($" {AnyString}", TabCount);
result.TabCount.ShouldEqual(0);
result.SpaceCount.ShouldEqual(1);
}
private static string TrimExcessTabs(CodeLine[] codeLines,
int excessTabDepth,
int spacesPerTab,
bool endsWithNewLine)
{
var linesWithoutEmptyStartAndEnd = RemoveFirstAndLastBlankLines(codeLines);
var numberOfSpacesToTrim = excessTabDepth * spacesPerTab;
var builder = new StringBuilder();
for (var i = 0; i < linesWithoutEmptyStartAndEnd.Length; i++)
{
if (linesWithoutEmptyStartAndEnd[i].IsEmpty)
{
builder.Append(CodeLine.NewLine);
continue;
}
builder.Append(linesWithoutEmptyStartAndEnd[i].Line.Substring(numberOfSpacesToTrim));
if (endsWithNewLine || i < linesWithoutEmptyStartAndEnd.Length - 1)
{
builder.Append(CodeLine.NewLine);
}
}
return builder.ToString();
}
private static CodeLine[] RemoveFirstAndLastBlankLines(CodeLine[] codeLines)
{
if (codeLines == null
|| codeLines.Length <= 1
|| codeLines.All(cl => cl.IsEmpty))
{
return codeLines;
}
var startIsEmpty = codeLines[0].IsEmpty;
var endIsEmpty = codeLines[codeLines.Length - 1].IsEmpty;
if (!endIsEmpty && !startIsEmpty)
{
return codeLines;
}
var index = startIsEmpty ? 1 : 0;
var length = endIsEmpty ? codeLines.Length - 1 : codeLines.Length;
if (startIsEmpty)
{
length--;
}
var result = new CodeLine[length];
Array.Copy(codeLines, index, result, 0, length);
return result;
}
public void PassZeroThrows()
{
try
{
var result = new CodeLine(AnyString, 0);
}
catch (ArgumentException ex)
{
ex.Message.ShouldContain("cannot be zero");
}
}
public void PassNull_Throws()
{
try
{
var result = new CodeLine(null, TabCount);
}
catch (ArgumentNullException ex)
{
ex.Message.ShouldContain("value");
}
}
public void StartsWithThreeTabs_Counted()
{
var result = new CodeLine($"{TabString}{TabString}{TabString}{AnyString}", TabCount);
result.TabCount.ShouldEqual(3);
}
public void StartsWithSpace_ReturnsCorrectSpaceCount()
{
var result = new CodeLine($" {AnyString}", TabCount);
result.SpaceCount.ShouldEqual(1);
}
public void StartsWithOneTab_ReturnsCorrectNumberOfSpaces()
{
var result = new CodeLine($"{TabString}{AnyString}", TabCount);
result.SpaceCount.ShouldEqual(TabCount);
}
public void StartsWithFullTab_Counted()
{
var result = new CodeLine($"{TabString}{AnyString}", TabCount);
result.TabCount.ShouldEqual(1);
}
public void EndsWithTab_NotCounted()
{
var result = new CodeLine($"{AnyString}{TabString}", TabCount);
result.TabCount.ShouldEqual(0);
}
public void ContainsSpacesInsideCode()
{
var result = new CodeLine($" {AnyString} {AnyString} 7;", TabCount);
result.SpaceCount.ShouldEqual(1);
}