/// <summary>
/// Display the expected and actual string values on separate lines. If
/// the mismatch parameter is >=0, an additional line is displayed line
/// containing a caret that points to the mismatch point.
/// </summary>
/// <param name="expected">The expected string value</param>
/// <param name="actual">The actual string value</param>
/// <param name="mismatch">The point at which the strings don't match or -1</param>
/// <param name="ignoreCase">If true, case is ignored in string comparisons</param>
public override void DisplayStringDifferences(string expected, string actual, int mismatch, bool ignoreCase)
{
// Maximum string we can display without truncating
int maxStringLength = MAX_LINE_LENGTH
- PrefixLength // Allow for prefix
- 2; // 2 quotation marks
expected = MsgUtils.ConvertWhitespace(MsgUtils.ClipString(expected, maxStringLength, mismatch));
actual = MsgUtils.ConvertWhitespace(MsgUtils.ClipString(actual, maxStringLength, mismatch));
// The mismatch position may have changed due to clipping or white
// space conversion
mismatch = MsgUtils.FindMismatchPosition(expected, actual, 0, ignoreCase);
TextWriter.Write(Pfx_Expected);
WriteExpectedValue(expected);
if (ignoreCase)
{
WriteModifier(Resources.IgnoringCase);
}
TextWriter.WriteLine();
WriteActualLine(actual);
//DisplayDifferences(expected, actual);
if (mismatch >= 0)
{
WriteCaretLine(mismatch);
}
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo(MessageWriter writer)
{
writer.WritePredicate("String starting with");
writer.WriteExpectedValue(MsgUtils.ClipString(expected, writer.MaxLineLength - 40, 0));
if (this.caseInsensitive)
{
writer.WriteModifier("ignoring case");
}
}
public void TestClipString()
{
Assert.AreEqual(s52, MsgUtils.ClipString(s52, 52, 0));
Assert.AreEqual("abcdefghijklmnopqrstuvwxyz...",
MsgUtils.ClipString(s52, 29, 0));
Assert.AreEqual("...ABCDEFGHIJKLMNOPQRSTUVWXYZ",
MsgUtils.ClipString(s52, 29, 26));
Assert.AreEqual("...ABCDEFGHIJKLMNOPQRSTUV...",
MsgUtils.ClipString(s52, 28, 26));
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo(MessageWriter writer)
{
if (writer == null)
{
throw new ArgumentNullException("writer");
}
writer.WritePredicate(Resources.StringStartingWith);
writer.WriteExpectedValue(MsgUtils.ClipString(_expected, writer.MaxLineLength - 40, 0));
if (CaseInsensitive)
{
writer.WriteModifier(Resources.IgnoringCase);
}
}
public void TestClipString(string input, int max, int start, string result)
{
Assert.AreEqual(result, MsgUtils.ClipString(input, max, start));
}
public void TestClipString(string input, int max, int start, string result)
{
System.Console.WriteLine("input= \"{0}\"", input);
System.Console.WriteLine("result= \"{0}\"", result);
Assert.That(MsgUtils.ClipString(input, max, start), Is.EqualTo(result));
}
