public void MissingPadCharDefaultsToSpace()
{
var ws = new WidthSpecification(null);
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification("");
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification("<");
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification(">");
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification("^");
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification("<5");
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification(">5");
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification("^5");
Assert.AreEqual(' ', ws.PadChar);
ws = new WidthSpecification("5");
Assert.AreEqual(' ', ws.PadChar);
}
void PadCharFollowedByAlignmentInterpretedCorrectly(int?width)
{
WidthSpecification ws;
foreach (var padChar in AssortedChars)
{
foreach (var alignmentChar in OnlyAlignmentChars)
{
var s = padChar.ToString() + alignmentChar.ToString();
if (width != null)
{
s += width.ToString();
}
ws = new WidthSpecification(s);
Assert.AreEqual(ws.PadChar, padChar);
Assert.AreEqual(alignmentChar, (char)ws.Alignment);
if (width == null)
{
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(Int32.MaxValue, ws.MaxWidth);
}
else
{
Assert.AreEqual(width.Value, ws.MinWidth);
Assert.AreEqual(width.Value, ws.MaxWidth);
}
}
}
}
public void MissingMinAndMaxDefaultsCorrectly()
{
WidthSpecification ws;
ws = new WidthSpecification(".");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(Int32.MaxValue, ws.MaxWidth);
}
public void PadCharFollowedByWidthInterpretedCorrectly()
{
WidthSpecification ws;
foreach (var padChar in OnlyPadChars)
{
var s = padChar.ToString() + "20";
ws = new WidthSpecification(s);
Assert.AreEqual(ws.PadChar, padChar);
Assert.AreEqual(Alignment.Left, ws.Alignment);
Assert.AreEqual(20, ws.MinWidth);
Assert.AreEqual(20, ws.MaxWidth);
}
}
public void WhitespaceIsNotSignificant()
{
WidthSpecification ws;
ws = new WidthSpecification(" .0 ");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(0, ws.MaxWidth);
ws = new WidthSpecification(" .9 ");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(9, ws.MaxWidth);
ws = new WidthSpecification(" .20 ");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(20, ws.MaxWidth);
}
public void NumberOnlyInterpretedAsBothMinAndMax()
{
WidthSpecification ws;
ws = new WidthSpecification("0");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(0, ws.MaxWidth);
ws = new WidthSpecification("9");
Assert.AreEqual(9, ws.MinWidth);
Assert.AreEqual(9, ws.MaxWidth);
ws = new WidthSpecification("20");
Assert.AreEqual(20, ws.MinWidth);
Assert.AreEqual(20, ws.MaxWidth);
}
public void NullAndEmptyStringAreEquivalentWidthSpecifications()
{
var a = new WidthSpecification();
var b = new WidthSpecification("");
var c = new WidthSpecification(" ");
var d = new WidthSpecification(" ");
Assert.AreEqual(a, b);
Assert.AreEqual(b, c);
Assert.AreEqual(c, d);
// This essentially constrains the defaults.
Assert.AreEqual(' ', a.PadChar);
Assert.AreEqual(Alignment.Left, a.Alignment);
Assert.AreEqual(0, a.MinWidth);
Assert.AreEqual(Int32.MaxValue, a.MaxWidth);
}
public void MissingMinDefaultsCorrectly()
{
WidthSpecification ws;
// This is ambiguous.
// New rule: to specify a pad char of '.'
// you must have an alignment.
ws = new WidthSpecification("=.0");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(0, ws.MaxWidth);
ws = new WidthSpecification("=.9");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(9, ws.MaxWidth);
ws = new WidthSpecification("=.20");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(20, ws.MaxWidth);
}
public void LeadingDotIsInterpretedAsMinMaxDivider()
{
WidthSpecification ws;
// This is ambiguous.
// New rule: to specify a pad char of '.'
// you must have an alignment.
ws = new WidthSpecification(".0");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(0, ws.MaxWidth);
ws = new WidthSpecification(".9");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(9, ws.MaxWidth);
ws = new WidthSpecification(".20");
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(20, ws.MaxWidth);
}
public void SingleCharacterInterpretedCorrectly()
{
// If the single char is an alignment character, check
// that it is detected properly.
WidthSpecification ws;
foreach (var alignment in ValidAlignments)
{
var c = (char)alignment;
ws = new WidthSpecification(c.ToString());
Assert.AreEqual(' ', ws.PadChar);
Assert.AreEqual(alignment, ws.Alignment);
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(Int32.MaxValue, ws.MaxWidth);
}
// If the single char is a digit it is taken to be a width.
for (int i = 0; i <= 9; i++)
{
var c = i.ToString();
ws = new WidthSpecification(c);
Assert.AreEqual(' ', ws.PadChar);
Assert.AreEqual(Alignment.Left, ws.Alignment);
Assert.AreEqual(i, ws.MinWidth);
Assert.AreEqual(i, ws.MaxWidth);
}
// Case of single char being a space is handled in the
// test NullAndEmptyStringAreEquivalentWidthSpecifications().
// Some representative pad chars.
foreach (var c in OnlyPadChars)
{
ws = new WidthSpecification(c.ToString());
Assert.AreEqual(c, ws.PadChar);
Assert.AreEqual(Alignment.Left, ws.Alignment);
Assert.AreEqual(0, ws.MinWidth);
Assert.AreEqual(Int32.MaxValue, ws.MaxWidth);
}
}
