Fix determination of fixture parameters

- Added ability to pass any parameters to `params` keyword in `pytest.fixture`, except:
  1) `params=<callable object>`, but `params=[<callable object>, ...]` is allowed
  2) `params=[*<any collection>]`

- Analysis of `pytest_generate_tests` is almost equivalent to regular fixtures, except:
  1) `metafunc.parametrize(*<any collection>, **<any dict>)`
  2) `metafunc.parametrize("any", <callable object>)`
  3) `metafunc.parametrize("any1, any2", [(<callable object>, [*<any collection>])]`

Signed-off-by: Kirill Sosnovskikh <k.sosnovskikh@yadro.com>

README.md

@@ -52,12 +52,12 @@ class TestIngoredClass:  # noqa: allure-validator
 ### Options
 
 The linter supports the following flags:
-- `--plugins` - regex patterns that plugins must match (paths are compiled according to the template: `plugin / src / plugin`).
+- `--plugins` - regex patterns that plugins must match (paths are compiled according to the template: `plugin_name / src / plugin_name`).
 - `--files` - paths to files with fixtures.
 
 Configuration options can also be provided using special command line arguments, for example:
 ```shell
-allure-validator pytest_tests/ --plugins some[-_]plugin --files etc/workspace/some_plugin/src/some_plugin/fixtures.py
+allure-validator <tests folder> --plugins <plugin regex>, ... --files <path to file with fixtures>, ...
 ```
 
 ## Work example

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "allure-validator"
-version = "1.0.0"
+version = "1.1.1"
 description = "Linter for allure.title validation"
 readme = "README.md"
 authors = [{ name = "YADRO", email = "info@yadro.com" }]
@@ -21,7 +21,7 @@ dependencies = [
     "pytest>=7.1.2",
     "pytest-lazy-fixture>=0.6.3"
 ]
-requires-python = "==3.10.*"
+requires-python = ">=3.10"
 
 [project.optional-dependencies]
 dev = ["black", "pylint", "isort", "pre-commit"]

src/allure_validator/collect.py

@@ -187,16 +187,23 @@ def fixtures(ast_fixtures: list[ast.FunctionDef], ast_hooks: list[ast.FunctionDe
             if parse.decorator(node.value) != PYTEST_METAFUNC_PARAMETRIZE:
                 continue
 
-            fixture_names = parse.param_names(node.value.args[0])
+            if len(node.value.args) < 2:
+                raise SyntaxError(f"{path}:{ast_hook.lineno}:{ast_hook.col_offset}: Unexpected syntax in {PYTEST_METAFUNC_PARAMETRIZE}")
+
+            ast_names, ast_params, *_ = node.value.args
+            fixture_names = parse.param_names(ast_names)
+
             for name in fixture_names:
-                # Dynamic fake fixture
+                params = parse.metafunc_params(ast_params)
+
+                # Dynamic fixture
                 fixture = Fixture(
                     name,
                     path,
                     node.lineno,
                     node.col_offset,
                     args=[],
-                    params=["parametrized"],
+                    params=params,
                 )
                 fixtures[fixture] = fixture
 

src/allure_validator/common.py

@@ -3,8 +3,10 @@ REPORTER_TITLE = "reporter.title"
 
 PYTEST_FIXTURE = "pytest.fixture"
 PYTEST_PARAMETRIZE = "pytest.mark.parametrize"
+PYTEST_PARAM = "pytest.param"
 PYTEST_GENERATE_TESTS = "pytest_generate_tests"
 PYTEST_METAFUNC_PARAMETRIZE = "metafunc.parametrize"
+PYTEST_FORCED_PARAMETRIZATION = ["forced", "parametrized", "fixture"]
 
 ATTR_PATH = "__func_path"
 ATTR_CLASS_NAME = "__class_name"
@@ -14,5 +16,6 @@ VALIDATE_ERROR = 1
 DIRECTORY_ERROR = 2
 PLUGIN_ERROR = 3
 FILE_ERROR = 4
+SYNTAX_ERROR = 5
 
 ALLURE_VALIDATOR_IGNORE = "noqa: allure-validator"

src/allure_validator/main.py

@@ -1,8 +1,6 @@
-import sys
-
 from allure_validator import collect, validate
 from allure_validator.arguments import args
-from allure_validator.common import DIRECTORY_ERROR, FILE_ERROR, PLUGIN_ERROR, VALIDATE_DONE, VALIDATE_ERROR
+from allure_validator.common import DIRECTORY_ERROR, FILE_ERROR, PLUGIN_ERROR, SYNTAX_ERROR, VALIDATE_DONE, VALIDATE_ERROR
 
 
 def main():
@@ -18,22 +16,31 @@ def main():
         paths.extend(files)
     except NotADirectoryError as e:
         print(e)
-        sys.exit(DIRECTORY_ERROR)
+        exit(DIRECTORY_ERROR)
     except ModuleNotFoundError as e:
         print(e)
-        sys.exit(PLUGIN_ERROR)
+        exit(PLUGIN_ERROR)
     except FileNotFoundError as e:
         print(e)
-        sys.exit(FILE_ERROR)
+        exit(FILE_ERROR)
+    except SyntaxError as e:
+        print(e)
+        exit(SYNTAX_ERROR)
 
     ast_items = collect.ast_pytest_items(paths)
-    files = collect.fixtures(ast_items.fixtures, ast_items.hooks, plugins)
-    tests = collect.tests(ast_items.tests, files, plugins)
+    fixtures = collect.fixtures(ast_items.fixtures, ast_items.hooks, plugins)
+    tests = collect.tests(ast_items.tests, fixtures, plugins)
     validate_result = validate.titles(tests)
 
     if validate_result.errors == 0:
         print(f"Done🎉\nFiles analyzed: {len(paths)}\nTests analyzed: {len(tests)}")
-        sys.exit(VALIDATE_DONE)
+
+        if plugins:
+            patterns = ", ".join(args.plugins)
+            print(f"Found plugins with patterns: {patterns}")
+            print(*(f"-> {plugin}" for plugin in plugins), sep="\n")
+
+        exit(VALIDATE_DONE)
 
     for title, tests in validate_result.not_unique.items():
         print(f"NOT UNIQUE TITLE: {title}")
@@ -49,4 +56,9 @@ def main():
         params_str = " OR ".join(params) if isinstance(params, list) else params
         print(f"{test.link}: MISSING PARAMS: Parameters are missing from title: {params_str}")
 
-    sys.exit(VALIDATE_ERROR)
+    if plugins:
+        patterns = ", ".join(args.plugins)
+        print(f"Found plugins with patterns: {patterns}")
+        print(*(f"-> {plugin}" for plugin in plugins), sep="\n")
+
+    exit(VALIDATE_ERROR)

src/allure_validator/parse.py

@@ -2,7 +2,15 @@ import ast
 import re
 from pathlib import Path
 
-from allure_validator.common import ALLURE_TITLE, ALLURE_VALIDATOR_IGNORE, PYTEST_FIXTURE, PYTEST_PARAMETRIZE, REPORTER_TITLE
+from allure_validator.common import (
+    ALLURE_TITLE,
+    ALLURE_VALIDATOR_IGNORE,
+    PYTEST_FIXTURE,
+    PYTEST_FORCED_PARAMETRIZATION,
+    PYTEST_PARAM,
+    PYTEST_PARAMETRIZE,
+    REPORTER_TITLE,
+)
 from allure_validator.pytest_items import TestParams
 
 
@@ -130,25 +138,67 @@ def fixture_params(func: ast.FunctionDef) -> list[str]:
     """
 
     ast_params = []
+
     for deco in func.decorator_list:
         if not isinstance(deco, ast.Call):
             continue
 
         for keyword in deco.keywords:
             if keyword.arg == "params":
-                ast_params.extend(keyword.value.elts)
+                if isinstance(keyword.value, ast.List | ast.Tuple):
+                    ast_params.extend(keyword.value.elts)
+                else:
+                    return PYTEST_FORCED_PARAMETRIZATION
 
     params = []
+
     for ast_param in ast_params:
-        for arg in ast_param.args:
-            params.append(ast.unparse(arg))
+        if isinstance(ast_param, ast.Call) and decorator(ast_param) == PYTEST_PARAM:
+            params.extend(ast.unparse(arg) for arg in ast_param.args)
+            continue
+
+        if not isinstance(ast_param, ast.Starred):
+            params.append(ast.unparse(ast_param))
+            continue
+
+        return PYTEST_FORCED_PARAMETRIZATION
 
     return params
 
 
-def param_names(ast_names: ast.Constant | ast.List) -> list[str]:
+def param_names(ast_names: ast.Constant | ast.List | ast.Tuple) -> list[str]:
     """Generates a list of parameter names from `pytest.parametrize`."""
 
     if isinstance(ast_names, ast.Constant):
         return ast_names.value.replace(",", " ").split()
     return [elt.value for elt in ast_names.elts]
+
+
+def metafunc_params(ast_params: ast.List | ast.Tuple) -> list:
+    """
+    Extracts parameters for the fixture from the `params` argument of the `metafunc.parametrize` function.
+
+    Args:
+        ast_params: Node from which parameters should be extracted.
+
+    Returns:
+        list: Extracted parameters.
+    """
+
+    if not isinstance(ast_params, ast.List | ast.Tuple):
+        return PYTEST_FORCED_PARAMETRIZATION
+
+    if any(isinstance(elt, ast.Starred) for elt in ast_params.elts):
+        return PYTEST_FORCED_PARAMETRIZATION
+
+    params = []
+
+    for ast_param in ast_params.elts:
+        if isinstance(ast_param, ast.Constant):
+            params.append(ast_param.value)
+        elif isinstance(ast_param, ast.Name | ast.Attribute):
+            params.append(ast.unparse(ast_param))
+        else:
+            SyntaxError(ast.unparse(ast_param))
+
+    return params

src/allure_validator/pytest_items.py

@@ -39,7 +39,7 @@ class Fixture(Item):
 
     @property
     def parametrized(self) -> bool:
-        return bool(self.params)
+        return len(self.params) > 1
 
 
 @dataclass(eq=False)

tests/conftest.py

@@ -2,6 +2,10 @@ import allure
 import pytest
 
 
+def parametrize_fixture() -> list[int]:
+    return [1, 2, 3]
+
+
 @pytest.fixture(
     scope="function",
     params=[
@@ -34,3 +38,12 @@ def object_fixture(file_path):
 )
 def parametrized_fixture(request: pytest.FixtureRequest):
     return request.param
+
+
+@allure.title("[Session] Optional parametrized fixture")
+@pytest.fixture(
+    scope="session",
+    params=[parametrize_fixture()],
+)
+def optional_parametrized_fixture(request: pytest.FixtureRequest):
+    return request.param

tests/test_validator.py

@@ -1,18 +1,91 @@
 import allure
 import pytest
+from frostfs_testlib.s3.aws_cli_client import AwsCliClient
+from frostfs_testlib.s3.boto3_client import Boto3ClientWrapper
+
+
+class Clients:
+    AttributeClient = ...
+
+
+def parametrize_fixture() -> list[int]:
+    return [1, 2, 3]
+
 
 # ============== DYNAMIC FIXTURE ============== #
 
 
 def pytest_generate_tests(metafunc: pytest.Metafunc):
-    if "runtime_fixture" not in metafunc.fixturenames:
-        return
+    # Required dynamic fixture
+    if "required_runtime_fixture" in metafunc.fixturenames:
+        metafunc.parametrize("required_runtime_fixture", [AwsCliClient, Boto3ClientWrapper, Clients.AttributeClient])
 
-    metafunc.parametrize("runtime_fixture", [1, 2, 3])
+    # Optional dynamic fixture 1
+    if "optional_runtime_fixture_1" in metafunc.fixturenames:
+        metafunc.parametrize("optional_runtime_fixture_1", [True])
+
+    # Optional dynamic fixture 2
+    if "optional_runtime_fixture_2" in metafunc.fixturenames:
+        metafunc.parametrize("optional_runtime_fixture_2", [parametrize_fixture()])
+
+    # Required dynamic fixtures
+    if "required_runtime_1" in metafunc.fixturenames and "required_runtime_2" in metafunc.fixturenames:
+        metafunc.parametrize("required_runtime_1,required_runtime_2", [(1, 2), (3, 4)])
+
+    # Optional dynamic fixtures
+    if "optional_runtime_1" in metafunc.fixturenames and "optional_runtime_2" in metafunc.fixturenames:
+        metafunc.parametrize(["optional_runtime_1", "optional_runtime_2"], [("optional", [1, 2, 3])])
+
+    # Required dynamic fixture with implicit parameterization 1
+    if "implicitly_required_runtime_fixture_1" in metafunc.fixturenames:
+        metafunc.parametrize("implicitly_required_runtime_fixture_1", parametrize_fixture())
+
+    # Required dynamic fixture with implicit parameterization 2
+    if "implicitly_required_runtime_fixture_2" in metafunc.fixturenames:
+        metafunc.parametrize("implicitly_required_runtime_fixture_2", [*parametrize_fixture()])
+
+    # Required dynamic fixture with implicit parameterization 3
+    if "implicitly_required_runtime_fixture_3" in metafunc.fixturenames:
+        metafunc.parametrize("implicitly_required_runtime_fixture_3", [0, parametrize_fixture(), *parametrize_fixture()])
 
 
-@allure.title("Test runtime fixture")
-def test_runtime_fixture(runtime_fixture):
+@allure.title("Test required runtime fixture")
+def test_required_runtime_fixture(required_runtime_fixture):
+    assert True
+
+
+@allure.title("Test optional runtime fixture 1")
+def test_optional_runtime_fixture_1(optional_runtime_fixture_1):
+    assert True
+
+
+@allure.title("Test optional runtime fixture 2")
+def test_optional_runtime_fixture_2(optional_runtime_fixture_2):
+    assert True
+
+
+@allure.title("Test required runtime fixtures")
+def test_required_runtime_fixtures(required_runtime_1, required_runtime_2):
+    assert True
+
+
+@allure.title("Test optional runtime fixtures")
+def test_optional_runtime_fixtures(optional_runtime_1, optional_runtime_2):
+    assert True
+
+
+@allure.title("Test implicitly required runtime fixture 1")
+def test_implicitly_required_runtime_fixture_1(implicitly_required_runtime_fixture_1):
+    assert True
+
+
+@allure.title("Test implicitly required runtime fixture 2")
+def test_implicitly_required_runtime_fixture_2(implicitly_required_runtime_fixture_2):
+    assert True
+
+
+@allure.title("Test implicitly required runtime fixture 3")
+def test_implicitly_required_runtime_fixture_3(implicitly_required_runtime_fixture_3):
     assert True
 
 
@@ -117,6 +190,11 @@ def test_three_multiple_indirect(object_fixture: str):
     assert True
 
 
+@allure.title("Test optional fixture")
+def test_optional_fixture(optional_parametrized_fixture):
+    assert True
+
+
 # ============== TESTS/FIXTURES IN CLASS ============== #