Add test for tcms_api.TestRun. Closes #194

this problem in #194 was solved during the XML-RPC refactoring.
This commit adds the necessary test to demonstrate everything is
working without raising exceptions.

tcms_api/tests/test_testrun.py

@@ -0,0 +1,32 @@
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Copyright (c) 2018 the Kiwi TCMS project. All rights reserved.
+#   Author: Alexander Todorov <[email protected]>
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+from tcms_api.mutable import TestRun
+
+from tcms_api.tests import BaseAPIClient_TestCase
+
+from tcms.tests.factories import TestRunFactory
+from tcms.tests.factories import TestCaseRunFactory
+
+
+class TestTestRunTests(BaseAPIClient_TestCase):
+    def _fixture_setup(self):
+        super(TestTestRunTests, self)._fixture_setup()
+
+        self.testrun = TestRunFactory()
+        for i in range(5):
+            TestCaseRunFactory(run=self.testrun)
+
+    def test_iterating_over_testrun_doesnt_crash(self):
+        """
+            https://github.com/kiwitcms/Kiwi/issues/194
+        """
+        i = 0
+        for caserun in TestRun(self.testrun.pk):
+            self.assertEqual('IDLE', caserun.status._name)
+            i += 1
+        self.assertEqual(5, i)