move run() up to TestCase

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

src/test_case.py

@@ -2,3 +2,7 @@ class TestCase:
 
     def __init__(self, name) -> None:
         self.name = name
+
+    def run(self) -> None:
+        method = getattr(self, self.name)
+        method()

src/was_run.py

@@ -8,7 +8,3 @@ def __init__(self, name) -> None:
 
     def testMethod(self) -> None:
         self.wasRun = 1
-
-    def run(self) -> None:
-        method = getattr(self, self.name)
-        method()