refactor cli tests

tests/cli_tests/conftest.py

@@ -0,0 +1,36 @@
+from typing import List
+from click import Command
+import pytest
+import logging
+
+from click.testing import CliRunner, Result
+
+@pytest.fixture
+def run_eynollah_ok_and_check_logs(
+    pytestconfig,
+    caplog,
+    model_dir,
+    eynollah_log_filter,
+):
+    """
+    Generates a Click Runner for `cli`, injects model_path and logging level
+    to `args`, runs the command and checks whether the logs generated contain
+    every fragment in `expected_logs`
+    """
+
+    def _run_click_ok_logs(cli: Command, args: List[str], expected_logs: List[str]) -> Result:
+        args = ['-m', model_dir] + args
+        if pytestconfig.getoption('verbose') > 0:
+            args.extend(['-l', 'DEBUG'])
+        caplog.set_level(logging.INFO)
+        runner = CliRunner()
+        with caplog.filtering(eynollah_log_filter):
+            result = runner.invoke(cli, args, catch_exceptions=False)
+        assert result.exit_code == 0, result.stdout
+        if expected_logs:
+            logmsgs = [logrec.message for logrec in caplog.records]
+            assert any(logmsg.startswith(needle) for needle in expected_logs for logmsg in logmsgs), f'{expected_logs} not in {logmsgs}'
+        return result
+
+    return _run_click_ok_logs
+