Automatically install tests/requirements.yml when found (#266)

Author: ssbarnea

src/ansible_compat/runtime.py

@@ -478,6 +478,8 @@ def prepare_environment(  # noqa: C901
             "requirements.yml",
             "roles/requirements.yml",
             "collections/requirements.yml",
+            # These is more of less the official way to store test requirements in collections so far:
+            "tests/requirements.yml",
         ]:
             self.install_requirements(Path(req_file), retry=retry, offline=offline)
 

test/collections/acme.goodies/tests/requirements.yml

@@ -0,0 +1,3 @@
+collections:
+  - name: ansible.posix
+    version: ">=1.0"

test/test_runtime.py

@@ -637,7 +637,12 @@ def test_runtime_version_in_range(
 @pytest.mark.parametrize(
     ("path", "scenario", "expected_collections"),
     (
-        pytest.param("test/collections/acme.goodies", "default", [], id="normal"),
+        pytest.param(
+            "test/collections/acme.goodies",
+            "default",
+            ["ansible.posix"],
+            id="normal",
+        ),
         pytest.param(
             "test/collections/acme.goodies/roles/baz",
             "deep_scenario",