"""
Tests that we can import and execute the most basic valid test file.
Uses: tests/basic_test.yaml
      tests/mega.yaml
"""
import pytest
import tfscript.cli
import os
from cli_test_helpers import ArgvContext, shell

class TestValidYaml:

    def test_parseValidFile(self, tmp_path, capsys):
        """Parse the basic test file."""
        with capsys.disabled():
            print(os.linesep + "Basic test output in {}".format(str(tmp_path)))

        with ArgvContext('tfscript', '--directory', str(tmp_path),
            '-d', 'tests/basic_test.yaml'):
            tfscript.cli.main()

    def test_megabyteYamlFile(self, tmp_path, capsys):
        """Parse the test file that produces multi-megabyte output."""
        with capsys.disabled():
            print(os.linesep + "Multi-megabyte test output in {}".format(str(tmp_path)))

        with ArgvContext('tfscript', '--directory', str(tmp_path),
            '-d', 'tests/basic_test.yaml'):
            tfscript.cli.main()
    
    def test_invalidKeyBind(self):
        """Test handling of invalid YAML exception. Doesn't capture output."""
        with ArgvContext('tfscript', 'tests/invalid_keybind.yaml'):
            with pytest.raises(SystemExit):
                tfscript.cli.main()
                pytest.fail("Should abort without positional filename argument")