fix: fixed tests

#78

Summary of changes:
- Fixed tests to match update library and ops.
- Modified tox.ini to ignore appropriate directories.

tests/unit/__init__.py

@@ -0,0 +1,10 @@
+#
+# Initialize unit tests
+#
+
+"""Setup test environment for unit tests."""
+
+import ops.testing
+
+# enable simulation of container networking
+ops.testing.SIMULATE_CAN_CONNECT = True

tests/unit/test_charm.py

@@ -388,7 +388,6 @@ def test_generate_config_hash(config, hash_salt, expected_hash, harness):
 def test_prometheus_data_set(harness, mocker):
     harness.set_leader(True)
     harness.set_model_name("kubeflow")
-    harness.begin()
 
     mock_net_get = mocker.patch("ops.testing._TestingModelBackend.network_get")
     mocker.patch("ops.testing._TestingPebbleClient.list_files")
@@ -406,6 +405,7 @@ def test_prometheus_data_set(harness, mocker):
     rel_id = harness.add_relation("metrics-endpoint", "otherapp")
     harness.add_relation_unit(rel_id, "otherapp/0")
     harness.update_relation_data(rel_id, "otherapp", {})
+    harness.begin()
 
     assert json.loads(harness.get_relation_data(rel_id, harness.model.app.name)["scrape_jobs"])[0][
         "static_configs"

tox.ini

@@ -50,10 +50,10 @@ description = Apply coding style standards to code
 commands =
     # uncomment the following line if this charm owns a lib
     # codespell {[vars]lib_path}
-    codespell {toxinidir}/. --skip {toxinidir}/.git --skip {toxinidir}/.tox \
-      --skip {toxinidir}/build --skip {toxinidir}/lib --skip {toxinidir}/venv \
-      --skip {toxinidir}/.mypy_cache \
-      --skip {toxinidir}/icon.svg --skip *.json.tmpl
+    codespell {toxinidir}/. --skip {toxinidir}/./.git --skip {toxinidir}/./.tox \
+      --skip {toxinidir}/./build --skip {toxinidir}/./lib --skip {toxinidir}/./venv \
+      --skip {toxinidir}/./.mypy_cache \
+      --skip {toxinidir}/./icon.svg --skip *.json.tmpl
     # pflake8 wrapper supports config from pyproject.toml
     pflake8 {[vars]all_path}
     isort --check-only --diff {[vars]all_path}