public void testUndo()
{
pbx ub = new pbx();
ub.AttachStyles(pbx.CreateStyles(1), null, 0);
int lenUtest = utest.Length();
int lenXYtest = xytest.Length();
ub.InsertString(0, xytest.Data(), lenXYtest);
Assert.AreEqual(ToString(ub), "xy");
ub.InsertString(0, utest.Data(), lenUtest);
Assert.AreEqual(ToString(ub), "uxy");
ub.DeleteRange(1, 1);
Assert.AreEqual(ToString(ub), "uy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "uxy");
ub.PerformRedoAction();
Assert.AreEqual(ToString(ub), "uy");
// Undo to beginning and redo again
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "uxy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "xy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "");
ub.PerformRedoAction();
Assert.AreEqual(ToString(ub), "xy");
ub.PerformRedoAction();
Assert.AreEqual(ToString(ub), "uxy");
ub.PerformRedoAction();
Assert.AreEqual(ToString(ub), "uy");
// Do it again. Undo to beginning and redo again
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "uxy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "xy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "");
ub.PerformRedoAction();
Assert.AreEqual(ToString(ub), "xy");
ub.PerformRedoAction();
Assert.AreEqual(ToString(ub), "uxy");
ub.PerformRedoAction();
Assert.AreEqual(ToString(ub), "uy");
// Add a new step in
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "uxy");
ub.DeleteRange(0, 1);
Assert.AreEqual(ToString(ub), "xy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "uxy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "xy");
ub.PerformUndoAction();
Assert.AreEqual(ToString(ub), "");
}
public void testUndoBatching()
{
pbx ub = new pbx();
ub.AttachStyles(pbx.CreateStyles(1), null, 0);
int lenUtest = utest.Length();
// Checking for batching
// Typing one character then another after should be one step
ub.InsertString(0, utest.Data(), lenUtest);
Assert.AreEqual(ub.StartUndo(), 1);
Assert.AreEqual(ToString(ub), "u");
ub.InsertString(1, utest.Data(), lenUtest);
Assert.AreEqual(ub.StartUndo(), 2);
Assert.AreEqual(ToString(ub), "uu");
ub.PerformUndoStep();
Assert.AreEqual(ToString(ub), "");
ub.PerformRedoStep();
Assert.AreEqual(ToString(ub), "uu");
// This one should not merge as it is after a redo
ub.InsertString(2, utest.Data(), lenUtest);
Assert.AreEqual(ub.StartUndo(), 1);
Assert.AreEqual(ToString(ub), "uuu");
// This one should not merge as it is a delete and previous was insert
ub.DeleteRange(0, 1);
Assert.AreEqual(ub.StartUndo(), 1);
Assert.AreEqual(ToString(ub), "uu");
// This one should merge as it is a delete and next to previous
ub.DeleteRange(0, 1);
Assert.AreEqual(ub.StartUndo(), 2);
Assert.AreEqual(ToString(ub), "u");
ub.PerformUndoStep();
Assert.AreEqual(ToString(ub), "uuu");
// This one should not merge as it is after an undo
ub.DeleteRange(2, 1);
Assert.AreEqual(ub.StartUndo(), 1);
Assert.AreEqual(ToString(ub), "uu");
// This one should merge as it is a delete and next to previous
ub.DeleteRange(1, 1);
Assert.AreEqual(ub.StartUndo(), 2);
Assert.AreEqual(ToString(ub), "u");
}
public void TestBadPositionException()
{
pbx pbuffer = new pbx();
pbuffer.AttachStyles(pbx.CreateStyles(1), null, 0);
try {
pbuffer.InsertString(1, test.Data(), 1);
Assert.Fail("Should raise an BadPositionException");
} catch (BadPositionException) {
}
}
public void TestBiggerSize()
{
pbx pbuffer = new pbx();
pbuffer.AttachStyles(pbx.CreateStyles(1), null, 0);
int lenTest = test.Length();
pbuffer.InsertString(0, test.Data(), lenTest);
Assert.AreEqual(pbuffer.Length(), lenTest);
for (int n = 0; n < lenTest; n++)
{
Assert.AreEqual(test.CharAt(n), pbuffer.CharAt(n));
}
}
void InsertString(pbx p, int pos, byte [] s)
{
p.InsertString(pos, s, s.Length);
}