import unittest

from dependabro.utils import extract_module_name


class TestExtractModuleName(unittest.TestCase):

    def test_extract_module_name_parses_correctly(self):
        source_url = "git@github.com:example/repo.git//"
        module_name = extract_module_name(source_url)
        self.assertEqual(module_name, "repo")

    def test_extract_module_name_handles_empty_string(self):
        source_url = ""
        module_name = extract_module_name(source_url)
        self.assertEqual(module_name, "")

    def test_extract_module_name_handles_invalid_url(self):
        source_url = "invalid_url"
        module_name = extract_module_name(source_url)
        self.assertEqual(module_name, "")

    def test_extract_module_name_handles_missing_repo_name(self):
        source_url = "git@github.com:example/"
        module_name = extract_module_name(source_url)
        self.assertEqual(module_name, "")


if __name__ == "__main__":
    unittest.main()