This change will enable us to display a visual report of the tests being run, so we can give feedback to users (instead of the program just blankly finishing)

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

---

Output:
➜ python3 src/test_case_test.py
Traceback (most recent call last):
  File "tdd-xunit-example/src/test_case_test.py", line 12, in <module>
    TestCaseTest("testTemplateMethod").run()
  File "tdd-xunit-example/src/test_case.py", line 12, in run
    method()
  File "tdd-xunit-example/src/test_case_test.py", line 9, in testTemplateMethod
    assert ("1 run, 0 failed" == result.summary())
                                 ^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'summary'

This class will be used to hold a summary of the test suite execution. For now, though, it's just implementing a summary method with a hardcoded implementation.

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

---

Output:
➜ python3 src/test_case_test.py
Traceback (most recent call last):
  File "tdd-xunit-example/src/test_case_test.py", line 12, in <module>
    TestCaseTest("testTemplateMethod").run()
  File "tdd-xunit-example/src/test_case.py", line 12, in run
    method()
  File "tdd-xunit-example/src/test_case_test.py", line 9, in testTemplateMethod
    assert ("1 run, 0 failed" == result.summary())
                                 ^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'summary'

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

This instance variable will be used to hold the number of tests there were ran in a test session. For now, though, it is hardcoded to the value 1.

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

This method will be responsible for updating the value of runCount everytime a test is executed

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

---

Output:
➜ python3 src/test_case_test.py
Traceback (most recent call last):
  File "tdd-xunit-example/src/test_case_test.py", line 12, in <module>
    TestCaseTest("testTemplateMethod").run()
  File "tdd-xunit-example/src/test_case.py", line 15, in run
    method()
  File "tdd-xunit-example/src/test_case_test.py", line 9, in testTemplateMethod
    assert ("1 run, 0 failed" == result.summary())
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError

This call is needed so we can increment the runCount variable and compute the number of tests ran in a session

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

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

---

Output:
➜ python3 src/test_case_test.py
Traceback (most recent call last):
  File "tdd-xunit-example/src/test_case_test.py", line 18, in <module>
    TestCaseTest("testFailedResult").run()
  File "tdd-xunit-example/src/test_case.py", line 17, in run
    method()
  File "tdd-xunit-example/src/test_case_test.py", line 13, in testFailedResult
    result = test.run()
             ^^^^^^^^^^
  File "tdd-xunit-example/src/test_case.py", line 16, in run
    method = getattr(self, self.name)
             ^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'WasRun' object has no attribute 'testBrokenMethod'

This implementation will support the code being executed as part of TestCase.testFailedResult. For now, though, we're just raising an exception.

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

---

Output:
➜ python3 src/test_case_test.py
Traceback (most recent call last):
  File "tdd-xunit-example/src/test_case_test.py", line 18, in <module>
    TestCaseTest("testFailedResult").run()
  File "tdd-xunit-example/src/test_case.py", line 17, in run
    method()
  File "tdd-xunit-example/src/test_case_test.py", line 13, in testFailedResult
    result = test.run()
             ^^^^^^^^^^
  File "tdd-xunit-example/src/test_case.py", line 17, in run
    method()
  File "tdd-xunit-example/src/was_run.py", line 20, in testBrokenMethod
    raise Exception
Exception