pkg/barback/test/asset_set_test.dart

// Copyright (c) 2013, 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.

library barback.test.asset_set_test;

import 'dart:async';
import 'dart:io';

import 'package:barback/barback.dart';
import 'package:barback/src/asset_set.dart';
import 'package:unittest/unittest.dart';

import 'utils.dart';

main() {
  initConfig();

  var fooId = new AssetId.parse("app|foo.txt");
  var barId = new AssetId.parse("app|bar.txt");

  group("[] operator", () {
    test("gets an asset with the given ID", () {
      var set = new AssetSet();
      var foo = new MockAsset(fooId, "foo");
      set.add(foo);

      expect(set[fooId], equals(foo));
    });

    test("returns null if no asset with the ID is in the set", () {
      var set = new AssetSet();
      expect(set[fooId], isNull);
    });
  });

  group(".add()", () {
    test("adds the asset to the set", () {
      var set = new AssetSet();
      var foo = new MockAsset(fooId, "foo");
      set.add(foo);
      expect(set.contains(foo), isTrue);
    });

    test("replaces a previously added asset with that ID", () {
      var set = new AssetSet();
      set.add(new MockAsset(fooId, "before"));
      set.add(new MockAsset(fooId, "after"));
      expect(set[fooId].contents, equals("after"));
    });

    test("returns the added item", () {
      var set = new AssetSet();
      var foo = new MockAsset(fooId, "foo");
      expect(set.add(foo), equals(foo));
    });
  });

  group(".addAll()", () {
    test("adds the assets to the set", () {
      var set = new AssetSet();
      var foo = new MockAsset(fooId, "foo");
      var bar = new MockAsset(barId, "bar");
      set.addAll([foo, bar]);
      expect(set.contains(foo), isTrue);
      expect(set.contains(bar), isTrue);
    });

    test("replaces assets earlier in the sequence with later ones", () {
      var set = new AssetSet();
      var foo1 = new MockAsset(fooId, "before");
      var foo2 = new MockAsset(fooId, "after");
      set.addAll([foo1, foo2]);
      expect(set[fooId].contents, equals("after"));
    });
  });

  group(".clear()", () {
    test("empties the set", () {
      var set = new AssetSet();
      var foo = new MockAsset(fooId, "foo");
      set.add(foo);
      set.clear();

      expect(set.length, equals(0));
      expect(set.contains(foo), isFalse);
    });
  });

  group(".contains()", () {
    test("returns true if the asset is in the set", () {
      var set = new AssetSet();
      var foo = new MockAsset(fooId, "foo");
      var bar = new MockAsset(barId, "bar");
      set.add(foo);

      expect(set.contains(foo), isTrue);
      expect(set.contains(bar), isFalse);
    });
  });

  group(".containsId()", () {
    test("returns true if an asset with the ID is in the set", () {
      var set = new AssetSet();
      var foo = new MockAsset(fooId, "foo");
      set.add(foo);

      expect(set.containsId(fooId), isTrue);
      expect(set.containsId(barId), isFalse);
    });
  });
}