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/test_cli.py

@@ -4,7 +4,6 @@ from operator import attrgetter
 import signal
 import subprocess
 import pytest
-from syrupy.extensions.json import SingleFileSnapshotExtension
 import yaml
 
 from config import *
@@ -20,15 +19,6 @@ class ExtraNewLinesDumper(yaml.SafeDumper):
             super().write_line_break()
 
 
-class YamlSnapshotExtension(SingleFileSnapshotExtension):
-    _file_extension = "yaml"
-
-
-@pytest.fixture
-def snapshot_yaml(snapshot):
-    return snapshot.use_extension(YamlSnapshotExtension)
-
-
 def itemgetter(*items):
     "operator.itemgetter with None as fallback when key does not exist"
     if len(items) == 1: