Ensure coverage reporting on unexecuted files

Since `odp` is now a namespace package, coverage cannot discover and report on code that is not actually imported during a test run (see nedbat/coveragepy#1024 for further discussion around this issue). This was giving us an inflated coverage score.

odp/identity/__init__.py

@@ -5,28 +5,31 @@
 from odp.config import config
 from odp.lib.hydra_admin import HydraAdminClient
 
-mail = Mail()
+if config.ODP.ENV != 'testing':
+    # TODO: test odp.identity...
 
-hydra_admin = HydraAdminClient(
-    server_url=config.HYDRA.ADMIN.URL,
-    verify_tls=config.ODP.ENV != 'development',
-    remember_login_for=config.ODP.IDENTITY.LOGIN_EXPIRY,
-)
+    mail = Mail()
 
-redis_cache = redis.Redis(
-    host=config.REDIS.HOST,
-    port=config.REDIS.PORT,
-    db=config.REDIS.DB,
-    decode_responses=True,
-)
+    hydra_admin = HydraAdminClient(
+        server_url=config.HYDRA.ADMIN.URL,
+        verify_tls=config.ODP.ENV != 'development',
+        remember_login_for=config.ODP.IDENTITY.LOGIN_EXPIRY,
+    )
 
-google_oauth2 = OAuth(cache=redis_cache)
-google_oauth2.register(
-    name='google',
-    authorize_url=config.GOOGLE.AUTH_URI,
-    access_token_url=config.GOOGLE.TOKEN_URI,
-    server_metadata_url=config.GOOGLE.OPENID_URI,
-    client_id=config.GOOGLE.CLIENT_ID,
-    client_secret=config.GOOGLE.CLIENT_SECRET,
-    client_kwargs={'scope': ' '.join(config.GOOGLE.SCOPE)},
-)
+    redis_cache = redis.Redis(
+        host=config.REDIS.HOST,
+        port=config.REDIS.PORT,
+        db=config.REDIS.DB,
+        decode_responses=True,
+    )
+
+    google_oauth2 = OAuth(cache=redis_cache)
+    google_oauth2.register(
+        name='google',
+        authorize_url=config.GOOGLE.AUTH_URI,
+        access_token_url=config.GOOGLE.TOKEN_URI,
+        server_metadata_url=config.GOOGLE.OPENID_URI,
+        client_id=config.GOOGLE.CLIENT_ID,
+        client_secret=config.GOOGLE.CLIENT_SECRET,
+        client_kwargs={'scope': ' '.join(config.GOOGLE.SCOPE)},
+    )

test/.coveragerc

@@ -1,7 +1,19 @@
 [run]
-source = odp
+source =
+    # odp-core
+    odp.config
+    odp.const
+    odp.schema
+    odp.logfile
+    odp.version
+    # odp-server
+    odp.api
+    odp.catalog
+    odp.db
+    odp.identity
+    odp.lib
+
 branch = True
-omit = */odp/ui/*
 
 [report]
 exclude_lines =

test/conftest.py

@@ -7,6 +7,28 @@
 from odp.config import config
 
 
+# noinspection PyUnresolvedReferences
+@pytest.fixture(scope='session', autouse=True)
+def ensure_coverage():
+    """Since the codebase now defines `odp` as a namespace package,
+    coverage cannot discover subpackages and modules that are not
+    imported during a test run, preventing reporting on unexecuted
+    files and hence inflating the coverage score. So, we import
+    everything we want covered here."""
+    # odp-core
+    import odp.config
+    import odp.const
+    import odp.schema
+    import odp.logfile
+    import odp.version
+    # odp-server
+    import odp.api
+    import odp.catalog
+    import odp.db
+    import odp.identity
+    import odp.lib
+
+
 @pytest.fixture(scope='session', autouse=True)
 def database():
     """An auto-use, run-once fixture that provides a clean