implement TestCaseTest

Checklist:
- Invoke test method ✅
- Invoke setUp first
- Invoke tearDown afterward
- Invoke tearDown even if the test method fails
- Run multiple tests
- Report collected results

Author: kaiosilveira

src/index.py

@@ -0,0 +1,13 @@
+from test_case import TestCase
+from was_run import WasRun
+
+
+class TestCaseTest(TestCase):
+    def testRunning(self) -> None:
+        test = WasRun("testMethod")
+        assert (not test.wasRun)
+        test.run()
+        assert (test.wasRun)
+
+
+TestCaseTest("testRunning").run()