Completely refactored unit tests, removed unused code

unit_tests.py

@@ -0,0 +1,23 @@
+import unittest
+
+
+if __name__ == '__main__':
+
+    from unittests import CryptoTests, ParserTests, TLTests, UtilsTests, NetworkTests
+    test_classes = [CryptoTests, ParserTests, TLTests, UtilsTests]
+
+    network = input('Run network tests (y/n)?: ').lower() == 'y'
+    if network:
+        test_classes.append(NetworkTests)
+
+    loader = unittest.TestLoader()
+
+    suites_list = []
+    for test_class in test_classes:
+        suite = loader.loadTestsFromTestCase(test_class)
+        suites_list.append(suite)
+
+    big_suite = unittest.TestSuite(suites_list)
+
+    runner = unittest.TextTestRunner()
+    results = runner.run(big_suite)