public void ContainsInvalidFrequency()
        {
            // Arrange
            string configFileContent = @"
                Config without frequency
            ";

            // Act
            string errorMsg = ConfigFileValidator.ContainsFrequency(configFileContent);

            // Assert
            Assert.AreEqual(ConfigFileValidator.ConfigErrors["Frequency"], errorMsg);
        }
        public void ContainsValidFrequency()
        {
            // Arrange
            string configFileContent = @"
                // Task runtimes are based on tasks executing on
                // a processor running at the following frequency (GHz).
                RUNTIME-REFERENCE-FREQUENCY,2
            ";

            // Act
            string errorMsg = ConfigFileValidator.ContainsFrequency(configFileContent);

            // Assert
            Assert.AreEqual("", errorMsg);
        }