Sped up tests

Pytest possibly has some bug in the fixture scoping when theres multiple sets of parameterisation
Unrolling the test parameterisation for SHA meant less containers spun up and down.

tests/conftest.py

@@ -228,6 +228,8 @@ def ensure_mysql_verison(request, mysql_tag):
 
 @pytest.fixture(scope='session')
 def mysql_server(unused_port, docker, session_id, mysql_tag, request):
+    print('\nSTARTUP CONTAINER - {0}\n'.format(mysql_tag))
+
     if not request.config.option.no_pull:
         docker.pull('mysql:{}'.format(mysql_tag))
 
@@ -342,5 +344,6 @@ def mysql_server(unused_port, docker, session_id, mysql_tag, request):
 
         yield container
     finally:
+        print('\nTEARDOWN CONTAINER - {0}\n'.format(mysql_tag))
         docker.kill(container=container['Id'])
         docker.remove_container(container['Id'])

tests/test_sha_connection.py

@@ -4,22 +4,78 @@
 import pytest
 
 
+# You could parameterise these tests with this, but then pytest
+# does some funky stuff and spins up and tears down containers
+# per function call.  Remember it would be
+# mysql_versions * event_loops * 4 auth tests ~= 3*2*4 ~= 24 tests
+
+# As the MySQL daemon restarts at least 3 times in the container
+# before it becomes stable, there's a sleep(10) so that's
+# around a 4min wait time.
+
+# @pytest.mark.parametrize("user,password,plugin", [
+#     ("nopass_sha256", None, 'sha256_password'),
+#     ("user_sha256", 'pass_sha256', 'sha256_password'),
+#     ("nopass_caching_sha2", None, 'caching_sha2_password'),
+#     ("user_caching_sha2", 'pass_caching_sha2', 'caching_sha2_password'),
+# ])
+
+
+@pytest.mark.mysql_verison('8.0')
+@pytest.mark.run_loop
+async def test_sha256_nopw(mysql_server, loop):
+    connection_data = copy.copy(mysql_server['conn_params'])
+    connection_data['user'] = 'nopass_sha256'
+    connection_data['password'] = None
+
+    async with create_pool(**connection_data,
+                           loop=loop) as pool:
+        async with pool.get() as conn:
+            # User doesnt have any permissions to look at DBs
+            # But as 8.0 will default to caching_sha2_password
+            assert conn._auth_plugin_used == 'sha256_password'
+
+
+@pytest.mark.mysql_verison('8.0')
+@pytest.mark.run_loop
+async def test_sha256_pw(mysql_server, loop):
+    connection_data = copy.copy(mysql_server['conn_params'])
+    connection_data['user'] = 'user_sha256'
+    connection_data['password'] = 'pass_sha256'
+
+    async with create_pool(**connection_data,
+                           loop=loop) as pool:
+        async with pool.get() as conn:
+            # User doesnt have any permissions to look at DBs
+            # But as 8.0 will default to caching_sha2_password
+            assert conn._auth_plugin_used == 'sha256_password'
+
+
+@pytest.mark.mysql_verison('8.0')
+@pytest.mark.run_loop
+async def test_cached_sha256_nopw(mysql_server, loop):
+    connection_data = copy.copy(mysql_server['conn_params'])
+    connection_data['user'] = 'nopass_caching_sha2'
+    connection_data['password'] = None
+
+    async with create_pool(**connection_data,
+                           loop=loop) as pool:
+        async with pool.get() as conn:
+            # User doesnt have any permissions to look at DBs
+            # But as 8.0 will default to caching_sha2_password
+            assert conn._auth_plugin_used == 'caching_sha2_password'
+
+
 @pytest.mark.mysql_verison('8.0')
 @pytest.mark.run_loop
-@pytest.mark.parametrize("user,password,plugin", [
-    ("nopass_sha256", None, 'sha256_password'),
-    ("user_sha256", 'pass_sha256', 'sha256_password'),
-    ("nopass_caching_sha2", None, 'caching_sha2_password'),
-    ("user_caching_sha2", 'pass_caching_sha2', 'caching_sha2_password'),
-])
-async def test_sha(mysql_server, loop, user, password, plugin):
+async def test_cached_sha256_pw(mysql_server, loop):
     connection_data = copy.copy(mysql_server['conn_params'])
-    connection_data['user'] = user
-    connection_data['password'] = password
+    connection_data['user'] = 'user_caching_sha2'
+    connection_data['password'] = 'pass_caching_sha2'
 
     async with create_pool(**connection_data,
                            loop=loop) as pool:
         async with pool.get() as conn:
             # User doesnt have any permissions to look at DBs
             # But as 8.0 will default to caching_sha2_password
-            assert conn._auth_plugin_used == plugin
+            assert conn._auth_plugin_used == 'caching_sha2_password'