TestOwnership getTestOwnership()

in app_dart/lib/src/request_handlers/flaky_handler_utils.dart [290:409]
100 lines of code
32 McCabe index (conditional complexity)

TestOwnership getTestOwnership(String builderName, BuilderType type, String testOwnersContent) {
  final String testName = _getTestNameFromBuilderName(builderName);
  String? owner;
  Team? team;
  switch (type) {
    case BuilderType.shard:
      {
        // The format looks like this:
        //   # build_tests @zanderso @flutter/tool
        final RegExpMatch? match = shardTestOwners.firstMatch(testOwnersContent);
        if (match != null && match.namedGroup(kOwnerGroupName) != null) {
          final List<String> lines =
              match.namedGroup(kOwnerGroupName)!.split('\n').where((String line) => line.contains('@')).toList();

          for (final String line in lines) {
            final List<String> words = line.trim().split(' ');
            // e.g. words = ['#', 'build_test', '@zanderso' '@flutter/tool']
            if (testName.contains(words[1])) {
              owner = words[2].substring(1); // Strip out the lead '@'
              team = words.length < 4 ? Team.unknown : _teamFromString(words[3].substring(1)); // Strip out the lead '@'
              break;
            }
          }
        }
        break;
      }
    case BuilderType.devicelab:
      {
        // The format looks like this:
        //   /dev/devicelab/bin/tasks/dart_plugin_registry_test.dart @stuartmorgan @flutter/plugin
        final RegExpMatch? match = devicelabTestOwners.firstMatch(testOwnersContent);
        if (match != null && match.namedGroup(kOwnerGroupName) != null) {
          final List<String> lines = match
              .namedGroup(kOwnerGroupName)!
              .split('\n')
              .where((String line) => line.isNotEmpty && !line.startsWith('#'))
              .toList();

          for (final String line in lines) {
            final List<String> words = line.trim().split(' ');
            // e.g. words = ['/xxx/xxx/xxx_test.dart', '@stuartmorgan' '@flutter/tool']
            if (words[0].endsWith('$testName.dart')) {
              owner = words[1].substring(1); // Strip out the lead '@'
              team = words.length < 3 ? Team.unknown : _teamFromString(words[2].substring(1)); // Strip out the lead '@'
              break;
            }
          }
        }
        break;
      }
    case BuilderType.frameworkHostOnly:
      {
        // The format looks like this:
        //   # Linux analyze
        //   /dev/bots/analyze.dart @HansMuller @flutter/framework
        final RegExpMatch? match = frameworkHostOnlyTestOwners.firstMatch(testOwnersContent);
        if (match != null && match.namedGroup(kOwnerGroupName) != null) {
          final List<String> lines =
              match.namedGroup(kOwnerGroupName)!.split('\n').where((String line) => line.isNotEmpty).toList();
          int index = 0;
          while (index < lines.length) {
            if (lines[index].startsWith('#')) {
              // Multiple tests can share same test file and ownership.
              // e.g.
              //   # Linux docs_test
              //   # Linux docs_public
              //   /dev/bots/docs.sh @HansMuller @flutter/framework
              bool isTestDefined = false;
              while (lines[index].startsWith('#') && index + 1 < lines.length) {
                final List<String> commentWords = lines[index].trim().split(' ');
                if (testName.contains(commentWords[2])) {
                  isTestDefined = true;
                }
                index += 1;
              }
              if (isTestDefined) {
                final List<String> ownerWords = lines[index].trim().split(' ');
                // e.g. ownerWords = ['/xxx/xxx/xxx_test.dart', '@HansMuller' '@flutter/framework']
                owner = ownerWords[1].substring(1); // Strip out the lead '@'
                team = ownerWords.length < 3
                    ? Team.unknown
                    : _teamFromString(ownerWords[2].substring(1)); // Strip out the lead '@'
                break;
              }
            }
            index += 1;
          }
        }
        break;
      }
    case BuilderType.firebaselab:
      {
        // The format looks like this for builder `Linux firebase_abstrac_method_smoke_test`:
        //   /dev/integration_tests/abstrac_method_smoke_test @blasten @flutter/android
        final RegExpMatch? match = firebaselabTestOwners.firstMatch(testOwnersContent);
        if (match != null && match.namedGroup(kOwnerGroupName) != null) {
          final List<String> lines = match
              .namedGroup(kOwnerGroupName)!
              .split('\n')
              .where((String line) => line.isNotEmpty && !line.startsWith('#'))
              .toList();

          for (final String line in lines) {
            final List<String> words = line.trim().split(' ');
            final List<String> dirs = words[0].split('/').toList();
            if (testName.contains(dirs.last)) {
              owner = words[1].substring(1); // Strip out the lead '@'
              team = words.length < 3 ? Team.unknown : _teamFromString(words[2].substring(1)); // Strip out the lead '@'
              break;
            }
          }
        }
        break;
      }
    case BuilderType.unknown:
      team = Team.unknown;
      break;
  }
  return TestOwnership(owner, team);
}