public void TestMove_NextPrevious()
{
TextCursor cursor = MakeCursor("test");
ValidateBeginningOfString(cursor);
Assert.True(cursor.Move(2), "Move(2)");
ValidateCurrentCharacter(cursor, 2, 's');
Assert.True(cursor.MovePrevious(), "MovePrevious()");
ValidateCurrentCharacter(cursor, 1, 'e');
Assert.True(cursor.MoveNext(), "MoveNext()");
ValidateCurrentCharacter(cursor, 2, 's');
Assert.True(cursor.MovePrevious()); // 1
Assert.True(cursor.MovePrevious()); // 0
Assert.False(cursor.MovePrevious());
ValidateCurrentCharacter(cursor, -1, '\0');
Assert.False(cursor.MovePrevious());
ValidateCurrentCharacter(cursor, -1, '\0');
}