xfstestsdb/tests/testcase/test_testcase.py

# Copyright 2023 (c) Anna Schumaker.
"""Tests the `xfstestsdb testcase` command."""
import argparse
import io
import unittest
import unittest.mock
import xfstestsdb


class TestTestcase(unittest.TestCase):
    """Tests the `xfstestsdb testcase` command."""

    def setUp(self):
        """Set up common variables."""
        self.xfstestsdb = xfstestsdb.Command()
        self.testcase = self.xfstestsdb.commands["testcase"]

    def test_init(self):
        """Check that the testcase command was set up properly."""
        self.assertIsInstance(self.testcase, xfstestsdb.commands.Command)
        self.assertIsInstance(self.testcase, xfstestsdb.testcase.Command)
        self.assertIsInstance(self.testcase.subparser, argparse.Action)
        self.assertEqual(self.xfstestsdb.subparser.choices["testcase"],
                         self.testcase.parser)

    @unittest.mock.patch("sys.stdout", new_callable=io.StringIO)
    def test_xunit_empty(self, mock_stdout: io.StringIO):
        """Test calling `xfstestdb xunit` with an empty argument list."""
        self.xfstestsdb.run(["testcase"])
        self.assertRegex(mock_stdout.getvalue(),
                         r"^usage: .*? testcase \[\-h\] \{.*?} ...$")