chore: fix test asserts (#407)

Changing wrong asserts in tests to the correct function.
This would break in python 3.12, but we don't build the CLI for 3.12 (yet)

tests/runners/test_pytest_standard_runner.py

@@ -55,7 +55,7 @@ def test_warning_bad_config(self, mock_warning):
         )
         runner = PytestStandardRunner(params)
         # Adding invalid config options emits a warning
-        assert mock_warning.called_with(
+        mock_warning.assert_called_with(
             "Config parameter 'some_missing_option' is unknonw."
         )
         # Warnings don't change the config

tests/services/static_analysis/test_analyse_file.py

@@ -47,12 +47,12 @@ def test_sample_analysis(input_filename, output_filename):
 
 @patch("builtins.open")
 @patch("codecov_cli.services.staticanalysis.get_best_analyzer", return_value=None)
-def test_analyse_file_no_analyser(mock_get_analyser, mock_open):
-    fake_contents = MagicMock()
+def test_analyse_file_no_analyzer(mock_get_analyzer, mock_open):
+    fake_contents = MagicMock(name="fake_file_contents")
     file_name = MagicMock(actual_filepath="filepath")
-    mock_open.return_value.read.return_value = fake_contents
+    mock_open.return_value.__enter__.return_value.read.return_value = fake_contents
     config = {}
     res = analyze_file(config, file_name)
     assert res == None
-    assert mock_open.called_with("filepath", "rb")
-    assert mock_get_analyser.called_with(file_name, fake_contents)
+    mock_open.assert_called_with("filepath", "rb")
+    mock_get_analyzer.assert_called_with(file_name, fake_contents)