// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:boolean_selector/boolean_selector.dart';
import 'package:test/test.dart';
import 'package:test_api/src/backend/metadata.dart';
import 'package:test_api/src/backend/platform_selector.dart';
import 'package:test_api/src/backend/runtime.dart';
import 'package:test_api/src/backend/suite_platform.dart';

void main() {
  group('tags', () {
    test('parses an Iterable', () {
      expect(
        Metadata.parse(tags: ['a', 'b']).tags,
        unorderedEquals(['a', 'b']),
      );
    });

    test('parses a String', () {
      expect(Metadata.parse(tags: 'a').tags, unorderedEquals(['a']));
    });

    test('parses null', () {
      expect(Metadata.parse().tags, unorderedEquals([]));
    });

    test('parse refuses an invalid type', () {
      expect(() => Metadata.parse(tags: 1), throwsArgumentError);
    });

    test('parse refuses an invalid type in a list', () {
      expect(() => Metadata.parse(tags: [1]), throwsArgumentError);
    });

    test('merges tags by computing the union of the two tag sets', () {
      var merged = Metadata(tags: ['a', 'b']).merge(Metadata(tags: ['b', 'c']));
      expect(merged.tags, unorderedEquals(['a', 'b', 'c']));
    });

    test('serializes and deserializes tags', () {
      var metadata = Metadata(tags: ['a', 'b']).serialize();
      expect(Metadata.deserialize(metadata).tags, unorderedEquals(['a', 'b']));
    });
  });

  group('constructor', () {
    test("returns the normal metadata if there's no forTag", () {
      var metadata = Metadata(verboseTrace: true, tags: ['foo', 'bar']);
      expect(metadata.verboseTrace, isTrue);
      expect(metadata.tags, equals(['foo', 'bar']));
    });

    test("returns the normal metadata if there's no tags", () {
      var metadata = Metadata(
        verboseTrace: true,
        forTag: {BooleanSelector.parse('foo'): Metadata(skip: true)},
      );
      expect(metadata.verboseTrace, isTrue);
      expect(metadata.skip, isFalse);
      expect(metadata.forTag, contains(BooleanSelector.parse('foo')));
      expect(metadata.forTag[BooleanSelector.parse('foo')]?.skip, isTrue);
    });

    test("returns the normal metadata if forTag doesn't match tags", () {
      var metadata = Metadata(
        verboseTrace: true,
        tags: ['bar', 'baz'],
        forTag: {BooleanSelector.parse('foo'): Metadata(skip: true)},
      );

      expect(metadata.verboseTrace, isTrue);
      expect(metadata.skip, isFalse);
      expect(metadata.tags, unorderedEquals(['bar', 'baz']));
      expect(metadata.forTag, contains(BooleanSelector.parse('foo')));
      expect(metadata.forTag[BooleanSelector.parse('foo')]?.skip, isTrue);
    });

    test('resolves forTags that match tags', () {
      var metadata = Metadata(
        verboseTrace: true,
        tags: ['foo', 'bar', 'baz'],
        forTag: {
          BooleanSelector.parse('foo'): Metadata(skip: true),
          BooleanSelector.parse('baz'): Metadata(timeout: Timeout.none),
          BooleanSelector.parse('qux'): Metadata(skipReason: 'blah'),
        },
      );

      expect(metadata.verboseTrace, isTrue);
      expect(metadata.skip, isTrue);
      expect(metadata.skipReason, isNull);
      expect(metadata.timeout, equals(Timeout.none));
      expect(metadata.tags, unorderedEquals(['foo', 'bar', 'baz']));
      expect(metadata.forTag.keys, equals([BooleanSelector.parse('qux')]));
    });

    test('resolves forTags that adds a behavioral tag', () {
      var metadata = Metadata(
        tags: ['foo'],
        forTag: {
          BooleanSelector.parse('baz'): Metadata(skip: true),
          BooleanSelector.parse('bar'): Metadata(
            verboseTrace: true,
            tags: ['baz'],
          ),
          BooleanSelector.parse('foo'): Metadata(tags: ['bar']),
        },
      );

      expect(metadata.verboseTrace, isTrue);
      expect(metadata.skip, isTrue);
      expect(metadata.tags, unorderedEquals(['foo', 'bar', 'baz']));
      expect(metadata.forTag, isEmpty);
    });

    test('resolves forTags that adds circular tags', () {
      var metadata = Metadata(
        tags: ['foo'],
        forTag: {
          BooleanSelector.parse('foo'): Metadata(tags: ['bar']),
          BooleanSelector.parse('bar'): Metadata(tags: ['baz']),
          BooleanSelector.parse('baz'): Metadata(tags: ['foo']),
        },
      );

      expect(metadata.tags, unorderedEquals(['foo', 'bar', 'baz']));
      expect(metadata.forTag, isEmpty);
    });

    test('base metadata takes precedence over forTags', () {
      var metadata = Metadata(
        verboseTrace: true,
        tags: ['foo'],
        forTag: {BooleanSelector.parse('foo'): Metadata(verboseTrace: false)},
      );

      expect(metadata.verboseTrace, isTrue);
    });
  });

  group('onPlatform', () {
    test('parses a valid map', () {
      var metadata = Metadata.parse(
        onPlatform: {
          'chrome': const Timeout.factor(2),
          'vm': [const Skip(), const Timeout.factor(3)],
        },
      );

      var key = metadata.onPlatform.keys.first;
      expect(
        key.evaluate(SuitePlatform(Runtime.chrome, compiler: null)),
        isTrue,
      );
      expect(key.evaluate(SuitePlatform(Runtime.vm, compiler: null)), isFalse);
      var value = metadata.onPlatform.values.first;
      expect(value.timeout.scaleFactor, equals(2));

      key = metadata.onPlatform.keys.last;
      expect(key.evaluate(SuitePlatform(Runtime.vm, compiler: null)), isTrue);
      expect(
        key.evaluate(SuitePlatform(Runtime.chrome, compiler: null)),
        isFalse,
      );
      value = metadata.onPlatform.values.last;
      expect(value.skip, isTrue);
      expect(value.timeout.scaleFactor, equals(3));
    });

    test('refuses an invalid value', () {
      expect(() {
        Metadata.parse(onPlatform: {'chrome': const TestOn('chrome')});
      }, throwsArgumentError);
    });

    test('refuses an invalid value in a list', () {
      expect(() {
        Metadata.parse(
          onPlatform: {
            'chrome': [const TestOn('chrome')],
          },
        );
      }, throwsArgumentError);
    });

    test('refuses an invalid platform selector', () {
      expect(() {
        Metadata.parse(onPlatform: {'vm &&': const Skip()});
      }, throwsFormatException);
    });

    test('refuses multiple Timeouts', () {
      expect(() {
        Metadata.parse(
          onPlatform: {
            'chrome': [const Timeout.factor(2), const Timeout.factor(3)],
          },
        );
      }, throwsArgumentError);
    });

    test('refuses multiple Skips', () {
      expect(() {
        Metadata.parse(
          onPlatform: {
            'chrome': [const Skip(), const Skip()],
          },
        );
      }, throwsArgumentError);
    });
  });

  group('validatePlatformSelectors', () {
    test('succeeds if onPlatform uses valid platforms', () {
      Metadata.parse(
        onPlatform: {'vm || browser': const Skip()},
      ).validatePlatformSelectors({'vm'});
    });

    test('succeeds if testOn uses valid platforms', () {
      Metadata.parse(testOn: 'vm || browser').validatePlatformSelectors({'vm'});
    });

    test('succeeds if testOn uses valid compilers', () {
      Metadata.parse(testOn: 'dart2js || kernel').validatePlatformSelectors({});
    });

    test('fails if onPlatform uses an invalid platform', () {
      expect(() {
        Metadata.parse(
          onPlatform: {'unknown': const Skip()},
        ).validatePlatformSelectors({'vm'});
      }, throwsFormatException);
    });

    test('fails if testOn uses an invalid platform', () {
      expect(() {
        Metadata.parse(testOn: 'unknown').validatePlatformSelectors({'vm'});
      }, throwsFormatException);
    });

    test('fails if testOn uses an invalid compiler', () {
      expect(() {
        Metadata.parse(testOn: 'foo2bar').validatePlatformSelectors({});
      }, throwsFormatException);
    });
  });

  group('change', () {
    test('preserves all fields if no parameters are passed', () {
      var metadata = Metadata(
        testOn: PlatformSelector.parse('linux'),
        timeout: const Timeout.factor(2),
        skip: true,
        skipReason: 'just because',
        verboseTrace: true,
        tags: ['foo', 'bar'],
        onPlatform: {PlatformSelector.parse('mac-os'): Metadata(skip: false)},
        forTag: {
          BooleanSelector.parse('slow'): Metadata(
            timeout: const Timeout.factor(4),
          ),
        },
      );
      expect(metadata.serialize(), equals(metadata.change().serialize()));
    });

    test('updates a changed field', () {
      var metadata = Metadata(timeout: const Timeout.factor(2));
      expect(
        metadata.change(timeout: const Timeout.factor(3)).timeout,
        equals(const Timeout.factor(3)),
      );
    });
  });
}