public void ChangeExtension()
{
var st = new StringTable(0);
// change a single char extension
PathAtom pa1 = PathAtom.Create(st, @"a.c");
PathAtom pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"a.d", pa2.ToString(st));
// change a multi char extension
pa1 = PathAtom.Create(st, @"a.cpp");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"a.d", pa2.ToString(st));
// change nothing
pa1 = PathAtom.Create(st, @"a");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"a.d", pa2.ToString(st));
// change a single char extension
pa1 = PathAtom.Create(st, @"ab.c");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"ab.d", pa2.ToString(st));
// change a multi char extension
pa1 = PathAtom.Create(st, @"ab.cpp");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"ab.d", pa2.ToString(st));
// change nothing
pa1 = PathAtom.Create(st, @"ab");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"ab.d", pa2.ToString(st));
// change a single char extension
pa1 = PathAtom.Create(st, @"ab.xyz.c");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"ab.xyz.d", pa2.ToString(st));
// change a multi char extension
pa1 = PathAtom.Create(st, @"ab.xyz.cpp");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@"ab.xyz.d", pa2.ToString(st));
pa1 = PathAtom.Create(st, @".cpp");
pa2 = pa1.ChangeExtension(st, PathAtom.Create(st, ".d"));
XAssert.AreEqual(@".d", pa2.ToString(st));
pa1 = PathAtom.Create(st, @"a.cpp");
pa2 = pa1.ChangeExtension(st, PathAtom.Invalid);
XAssert.AreEqual(@"a", pa2.ToString(st));
}
/// <summary>
/// Adds or changes the file extension of a path atom, returning a new path atom.
/// </summary>
/// <param name="atom">The original atom that may or may not have an extension.</param>
/// <param name="extension">The new extension (this string must include a leading .). If this is PathAtom.Invalid then this method is equivalent to calling RemoveExtension instead.</param>
public PathAtom ChangeExtension(PathAtom atom, PathAtom extension)
{
Contract.Requires(atom.IsValid);
Contract.Ensures(Contract.Result <PathAtom>().IsValid);
return(atom.ChangeExtension(m_stringTable, extension));
}
