#!/usr/bin/env fuchsia-vendored-python
# Copyright 2022 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import unittest

from verify_golden_go_proto_file import filter_line


class VerifyGoldenGoProtoFileTests(unittest.TestCase):
    """Validate golden_go_proto file comparisons

    This validates the logic used to compare generated Go for proto files with the
    checked-in goldens for significant differences.
    """

    def test_filter_line(self) -> None:
        cases = [
            ("// \tprotoc v1.2.3", "// \tprotoc \n"),
            ("// \tprotoc-gen-go v1.2.3", "// \tprotoc-gen-go \n"),
            ("// - protoc v1.2.3", "// - protoc \n"),
            ("// - protoc-gen-go-grpc v1.2.3", "// - protoc-gen-go-grpc \n"),
            ("some text with no    comments", "some text with no    comments"),
            (
                "a line with //    comments     with       spaces",
                "a line with //comments with spaces",
            ),
            (
                "a line with //comments     with       spaces",
                "a line with //comments with spaces",
            ),
        ]
        for input, expected in cases:
            self.assertEqual(filter_line(input), expected)