Stages/tuned: add unit tests for the stage.

Fix #1941

Signed-off-by: Tomáš Hozza <thozza@redhat.com>

stages/test/test_tuned.py

@@ -0,0 +1,151 @@
+#!/usr/bin/python3
+
+import pytest
+
+from osbuild.testutil import (
+    assert_jsonschema_error_contains,
+    make_fake_tree,
+)
+
+STAGE_NAME = "org.osbuild.tuned"
+
+
+@pytest.mark.parametrize("test_data,expected_err", [
+    # bad
+    ({"profiles": {}}, "{} is not of type 'array'"),
+    ({"profiles": ""}, "'' is not of type 'array'"),
+    ({"profiles": []}, "[] is too short"),
+    ({"profiles": [0]}, "0 is not of type 'string'"),
+    ({"profiles": [""]}, "'' is too short"),
+    ({}, "'profiles' is a required property"),
+    # good
+    ({"profiles": ["balanced"]}, ""),
+    ({"profiles": ["balanced", "sap-hana"]}, ""),
+])
+def test_schema_validation(stage_schema, test_data, expected_err):
+    test_input = {
+        "type": STAGE_NAME,
+        "options": {},
+    }
+    test_input["options"].update(test_data)
+    res = stage_schema.validate(test_input)
+
+    if expected_err == "":
+        assert res.valid is True, f"err: {[e.as_dict() for e in res.errors]}"
+    else:
+        assert res.valid is False
+        assert_jsonschema_error_contains(res, expected_err, expected_num_errs=1)
+
+
+@pytest.mark.parametrize("fake_tree,available_profiles", (
+    ({}, []),
+    # simple case with just installed profiles
+    (
+        {
+            "/usr/lib/tuned/balanced/tuned.conf": "",
+            "/usr/lib/tuned/sap/tuned.conf": ""
+        },
+        ["balanced", "sap"]
+    ),
+    # simple case with installed and custom profiles
+    (
+        {
+            "/usr/lib/tuned/balanced/tuned.conf": "",
+            "/usr/lib/tuned/sap/tuned.conf": "",
+            "/etc/tuned/custom/tuned.conf": ""
+        },
+        ["balanced", "sap", "custom"]
+    ),
+    # Tuned 2.23.0+ with profiles under profiles/ directory
+    # in which case we ignore profiles not under profiles/
+    (
+        {
+            "/usr/lib/tuned/profiles/balanced/tuned.conf": "",
+            "/usr/lib/tuned/sap/tuned.conf": ""
+        },
+        ["balanced"]
+    ),
+    (
+        {
+            "/usr/lib/tuned/profiles/balanced/tuned.conf": "",
+            "/etc/tuned/sap/tuned.conf": ""
+        },
+        ["balanced", "sap"]
+    ),
+    (
+        {
+            "/usr/lib/tuned/profiles/balanced/tuned.conf": "",
+            "/etc/tuned/profiles/sap/tuned.conf": ""
+        },
+        ["balanced", "sap"]
+    ),
+    (
+        {
+            "/etc/tuned/profiles/balanced/tuned.conf": "",
+            "/etc/tuned/sap/tuned.conf": ""
+        },
+        ["balanced"]
+    ),
+    (
+        {
+            "/usr/lib/tuned/profiles/profile1/tuned.conf": "",
+            "/usr/lib/tuned/profiles/profile2/tuned.conf": "",
+            "/usr/lib/tuned/profile3/tuned.conf": "",
+            "/etc/tuned/profiles/profile11/tuned.conf": "",
+            "/etc/tuned/profiles/profile12/tuned.conf": "",
+            "/etc/tuned/profile13/tuned.conf": "",
+        },
+        ["profile1", "profile2", "profile11", "profile12"]
+    ),
+))
+def test_tunedprofilesdb__load_available_profiles(tmp_path, stage_module, fake_tree, available_profiles):
+    make_fake_tree(tmp_path, fake_tree)
+    # pylint: disable=protected-access
+    assert sorted(stage_module.TunedProfilesDB._load_available_profiles(tmp_path)) == sorted(available_profiles)
+
+
+def test_tuned_happy(tmp_path, stage_module):
+    make_fake_tree(tmp_path, {
+        "/usr/lib/tuned/balanced/tuned.conf": "",
+        "/usr/lib/tuned/sap/tuned.conf": "",
+        "/etc/tuned/custom/tuned.conf": "",
+    })
+
+    options = {
+        "profiles": ["balanced", "sap", "custom"]
+    }
+
+    assert stage_module.main(tmp_path.as_posix(), options) == 0
+
+    active_profile_file = tmp_path / "etc/tuned/active_profile"
+    assert active_profile_file.is_file()
+    assert active_profile_file.read_text() == "balanced sap custom\n"
+
+    profile_mode_file = tmp_path / "etc/tuned/profile_mode"
+    assert profile_mode_file.is_file()
+    assert profile_mode_file.read_text() == "manual\n"
+
+
+def test_tuned_unhappy(tmp_path, stage_module):
+    make_fake_tree(tmp_path, {
+        "/usr/lib/tuned/balanced/tuned.conf": "",
+        "/usr/lib/tuned/sap/tuned.conf": "",
+        "/etc/tuned/custom/tuned.conf": "",
+    })
+
+    options = {
+        "profiles": ["balanced", "non-existing"]
+    }
+
+    try:
+        stage_module.main(tmp_path.as_posix(), options)
+    except ValueError as e:
+        assert "non-existing" in str(e)
+    else:
+        assert False, "Exception not raised"
+
+    active_profile_file = tmp_path / "etc/tuned/active_profile"
+    assert not active_profile_file.exists()
+
+    profile_mode_file = tmp_path / "etc/tuned/profile_mode"
+    assert not profile_mode_file.exists()