Move split_store.dart to the store/ folder and extract collections/codecs.

pkg/analysis_server/test/index/store/collection_test.dart

+// Copyright (c) 2014, 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 test.index.store.collection;
+
+import 'package:analysis_server/src/index/store/collection.dart';
+import 'package:unittest/unittest.dart';
+
+import '../../reflective_tests.dart';
+
+
+main() {
+  groupSep = ' | ';
+  group('IntArrayToIntMap', () {
+    runReflectiveTests(_IntArrayToIntMapTest);
+  });
+  group('IntToIntSetMap', () {
+    runReflectiveTests(_IntToIntSetMapTest);
+  });
+}
+
+
+@ReflectiveTestCase()
+class _IntArrayToIntMapTest {
+  IntArrayToIntMap map = new IntArrayToIntMap();
+
+  void test_put_get() {
+    map[<int>[1, 2, 3]] = 1;
+    map[<int>[2, 3, 4, 5]] = 2;
+    expect(map[<int>[0]], isNull);
+    expect(map[<int>[1, 2, 3]], 1);
+    expect(map[<int>[2, 3, 4, 5]], 2);
+  }
+}
+
+
+@ReflectiveTestCase()
+class _IntToIntSetMapTest {
+  IntToIntSetMap map = new IntToIntSetMap();
+
+  void test_add_duplicate() {
+    map.add(1, 0);
+    map.add(1, 0);
+    List<int> set = map.get(1);
+    expect(set, hasLength(1));
+  }
+
+  void test_clear() {
+    map.add(1, 10);
+    map.add(2, 20);
+    expect(map.length, 2);
+    map.clear();
+    expect(map.length, 0);
+  }
+
+  void test_get() {
+    map.add(1, 10);
+    map.add(1, 11);
+    map.add(1, 12);
+    map.add(2, 20);
+    map.add(2, 21);
+    expect(map.get(1), unorderedEquals([10, 11, 12]));
+    expect(map.get(2), unorderedEquals([20, 21]));
+  }
+
+  void test_get_no() {
+    expect(map.get(3), []);
+  }
+
+  void test_length() {
+    expect(map.length, 0);
+    map.add(1, 10);
+    expect(map.length, 1);
+    map.add(1, 11);
+    map.add(1, 12);
+    expect(map.length, 1);
+    map.add(2, 20);
+    expect(map.length, 2);
+    map.add(2, 21);
+    expect(map.length, 2);
+  }
+}