#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2020 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Tests for codegen.py.
"""

import unittest
from codegen import Util


class CodegenTest(unittest.TestCase):
    """Tests for codegen.py"""

    def test_sanitize_name(self):
        self.assertEqual(
          Util.sanitize_name('My Metric.Or::Event/Or/Project_name'),
          'My_Metric_Or__Event_Or_Project_name')

    def test_camel_to_snake(self):
        def check(camel, expected_snake):
            self.assertEqual(Util.camel_to_snake(camel), expected_snake)

        check('already_snake_case', 'already_snake_case')
        check('ConvertFromCamelCase', 'convert_from_camel_case')
        check('HTTPAcronymAtStart', 'http_acronym_at_start')
        check('AcronymInHTTPMiddle', 'acronym_in_http_middle')
        check('AcronymAtEndHTTP', 'acronym_at_end_http')

    def test_hash_name(self):
        # This was generated using the function in Chromium's
        # //base/metrics/metrics_hashes.cc.
        known_good_hash = 11096769389970233700
        self.assertEqual(Util.hash_name('known good hash'), known_good_hash)

    def test_event_name_hash(self):
        # This was generated using the function in Chromium's
        # //base/metrics/metrics_hashes.cc for the string
        # cros::TestProjectOne::TestEventOne
        event_name_hash = 16542188217976373364
        project_name = 'TestProjectOne'
        event_name = 'TestEventOne'
        self.assertEqual(Util.event_name_hash(project_name, event_name),
                         event_name_hash)


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