ObjFW  Diff

	CHECK([s1 isEqual: @"asd foo asd foofoo asd"])
	s1 = [@"XX" mutableCopy];
	[s1 replaceOccurrencesOfString: @"X"
			    withString: @"XX"];
	CHECK([s1 isEqual: @"XXXX"])

	/* Whitespace removing tests */
	s1 = [@"  \t\t \tasd  \t \t\t" mutableCopy];
	s1 = [@" \r \t\n\t \tasd  \t \t\t\r\n" mutableCopy];
	s2 = [s1 mutableCopy];
	s3 = [s1 mutableCopy];
	CHECK([[s1 removeLeadingWhitespaces] isEqual: @"asd  \t \t\t"])
	CHECK([[s2 removeTrailingWhitespaces] isEqual: @"  \t\t \tasd"])
	CHECK([[s1 removeLeadingWhitespaces] isEqual: @"asd  \t \t\t\r\n"])
	CHECK([[s2 removeTrailingWhitespaces] isEqual: @" \r \t\n\t \tasd"])
	CHECK([[s3 removeLeadingAndTrailingWhitespaces] isEqual: @"asd"])

	s1 = [@" \t\t  \t\t  \t \t" mutableCopy];
	s2 = [s1 mutableCopy];
	s3 = [s1 mutableCopy];
	CHECK([[s1 removeLeadingWhitespaces] isEqual: @""])
	CHECK([[s2 removeTrailingWhitespaces] isEqual: @""])