Add unit test for loading bad test in __init__()

Author: Vasileios Karakasis

unittests/resources/checks_unlisted/bad_init_check.py

@@ -0,0 +1,7 @@
+import reframe as rfm
+
+
+@rfm.simple_test
+class BadInitTest(rfm.RegressionTest):
+    def __init__(self):
+        foo

unittests/test_loader.py

@@ -63,3 +63,8 @@ def test_load_bad_required_version(self):
         with self.assertRaises(ValueError):
             self.loader.load_from_file('unittests/resources/checks_unlisted/'
                                        'no_required_version.py')
+
+    def test_load_bad_init(self):
+        tests = self.loader.load_from_file(
+            'unittests/resources/checks_unlisted/bad_init_check.py')
+        self.assertEqual(0, len(tests))