test(pytest): move pytest fixtures to conftest.py

There are a few benefits for this:

  - All fixtures in one module, so single source of truth.

  - The fixtures are automatically imported and injected by pytest
    so no explicit imports needed for these.

  - Linters won't complain about redefinition of outer scope objects.

Co-authored-by: Jens Troeger <jens.troeger@light-speed.de>
Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>

test/io/config.py

@@ -1,7 +1,6 @@
 import os
 import pathlib
 import shutil
-import pytest
 import uuid
 import yaml
 
@@ -13,71 +12,6 @@ POSTGREST_BIN = shutil.which("postgrest")
 SECRET = "reallyreallyreallyreallyverysafe"
 
 
-@pytest.fixture
-def dburi():
-    "Postgres database connection URI."
-    dbname = os.environ["PGDATABASE"]
-    host = os.environ["PGHOST"]
-    user = os.environ["PGUSER"]
-    return f"postgresql://?dbname={dbname}&host={host}&user={user}".encode()
-
-
-@pytest.fixture
-def baseenv():
-    "Base environment to connect to PostgreSQL"
-    return {
-        "PGDATABASE": os.environ["PGDATABASE"],
-        "PGHOST": os.environ["PGHOST"],
-        "PGUSER": os.environ["PGUSER"],
-    }
-
-
-@pytest.fixture
-def defaultenv(baseenv):
-    "Default environment for PostgREST."
-    return {
-        **baseenv,
-        "PGRST_DB_CONFIG": "true",
-        "PGRST_LOG_LEVEL": "info",
-        "PGRST_DB_POOL": "1",
-        "PGRST_NOT_EXISTING": "should not break any tests",
-    }
-
-
-@pytest.fixture
-def replicaenv(defaultenv):
-    "Default environment for a PostgREST replica."
-    conf = {
-        "PGRST_DB_ANON_ROLE": "postgrest_test_anonymous",
-        "PGRST_DB_SCHEMAS": "replica",
-    }
-    return {
-        "primary": {
-            **defaultenv,
-            **conf,
-        },
-        "replica": {
-            **defaultenv,
-            **conf,
-            "PGHOST": os.environ["PGREPLICAHOST"] + "," + os.environ["PGHOST"],
-            "PGREPLICASLOT": os.environ["PGREPLICASLOT"],
-        },
-    }
-
-
-@pytest.fixture
-def slow_schema_cache_env(defaultenv):
-    "Slow schema cache load environment PostgREST."
-    return {
-        **defaultenv,
-        "PGRST_INTERNAL_SCHEMA_CACHE_SLEEP": "1000",  # this does a pg_sleep internally, it will cause the schema cache query to be slow
-        # the slow schema cache query will keep using one pool connection until it finishes
-        # to prevent requests waiting for PGRST_DB_POOL_ACQUISITION_TIMEOUT we'll increase the pool size (must be >= 2)
-        "PGRST_DB_POOL": "2",
-        "PGRST_DB_CHANNEL_ENABLED": "true",
-    }
-
-
 def hpctixfile():
     """
     Returns a unique filename for each postgrest process that is