public void ComplexMask2()
        {
            string mask = "(Name='qwer.txt')^(Content~'qqw')";

            Assert.AreEqual(true, CheckErrors.isMaskInRightFormat(mask));
        }
        public void WrongSimpleMask2()
        {
            string mask = "Length= 15";

            Assert.AreEqual(false, CheckErrors.isMaskInRightFormat(mask));
        }
        public void ComplexMask1()
        {
            string mask = "^(Name='qwer.txt')&(Length=13)";

            Assert.AreEqual(true, CheckErrors.isMaskInRightFormat(mask));
        }
        public void WrongSimpleMask1()
        {
            string mask = "Name     =   'wrong.txt'";

            Assert.AreEqual(false, CheckErrors.isMaskInRightFormat(mask));
        }
        public void SimpleMask4()
        {
            string mask = "10<Length<=15'";

            Assert.AreEqual(true, CheckErrors.isMaskInRightFormat(mask));
        }
        public void SimpleMask3()
        {
            string mask = "Content~'Как же всё сложно'";

            Assert.AreEqual(true, CheckErrors.isMaskInRightFormat(mask));
        }
        public void SimpleMask2()
        {
            string mask = "Length=10g";

            Assert.AreEqual(true, CheckErrors.isMaskInRightFormat(mask));
        }
        public void SimpleMask1()
        {
            string mask = "Name='qwer'";

            Assert.AreEqual(true, CheckErrors.isMaskInRightFormat(mask));
        }