Reorganize mdv and observe packages

pkg/mdv_observe/test/list_change_test.dart

Index: pkg/mdv_observe/test/list_change_test.dart
diff --git a/pkg/mdv_observe/test/list_change_test.dart b/pkg/mdv_observe/test/list_change_test.dart
deleted file mode 100644
index e7e1249785bf12d68bf251416c769a74553135cb..0000000000000000000000000000000000000000
--- a/pkg/mdv_observe/test/list_change_test.dart
+++ /dev/null
@@ -1,290 +0,0 @@
-// 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.
-
-import 'package:mdv_observe/mdv_observe.dart';
-import 'package:unittest/unittest.dart';
-import 'utils.dart';
-
-// This file contains code ported from:
-// https://github.com/rafaelw/ChangeSummary/blob/master/tests/test.js
-
-main() {
-  // TODO(jmesserly): rename this? Is summarizeListChanges coming back?
-  group('summarizeListChanges', listChangeTests);
-}
-
-// TODO(jmesserly): port or write array fuzzer tests
-listChangeTests() {
-
-  test('sequential adds', () {
-    var model = toObservable([]);
-    model.add(0);
-
-    var summary;
-    var sub = model.changes.listen((r) { summary = _filter(r); });
-
-    model.add(1);
-    model.add(2);
-
-    expect(summary, null);
-    deliverChangeRecords();
-
-    expectChanges(summary, [_delta(1, 0, 2)]);
-  });
-
-  test('List Splice Truncate And Expand With Length', () {
-    var model = toObservable(['a', 'b', 'c', 'd', 'e']);
-
-    var summary;
-    var sub = model.changes.listen((r) { summary = _filter(r); });
-
-    model.length = 2;
-
-    deliverChangeRecords();
-    expectChanges(summary, [_delta(2, 3, 0)]);
-    summary = null;
-
-    model.length = 5;
-
-    deliverChangeRecords();
-    expectChanges(summary, [_delta(2, 0, 3)]);
-  });
-
-  group('List deltas can be applied', () {
-
-    var summary = null;
-
-    observeArray(model) {
-      model.changes.listen((records) { summary = _filter(records); });
-    }
-
-    applyAndCheckDeltas(model, copy) {
-      summary = null;
-      deliverChangeRecords();
-
-      // apply deltas to the copy
-      for (var delta in summary) {
-        copy.removeRange(delta.index, delta.index + delta.removedCount);
-        for (int i = delta.addedCount - 1; i >= 0; i--) {
-          copy.insert(delta.index, model[delta.index + i]);
-        }
-      }
-
-      // Note: compare strings for easier debugging.
-      expect('$copy', '$model', reason: '!!! summary $summary');
-    }
-
-    test('Contained', () {
-      var model = toObservable(['a', 'b']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeAt(1);
-      model.insertAll(0, ['c', 'd', 'e']);
-      model.removeRange(1, 3);
-      model.insert(1, 'f');
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Delete Empty', () {
-      var model = toObservable([1]);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeAt(0);
-      model.insertAll(0, ['a', 'b', 'c']);
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Right Non Overlap', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeRange(0, 1);
-      model.insert(0, 'e');
-      model.removeRange(2, 3);
-      model.insertAll(2, ['f', 'g']);
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Left Non Overlap', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeRange(3, 4);
-      model.insertAll(3, ['f', 'g']);
-      model.removeRange(0, 1);
-      model.insert(0, 'e');
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Right Adjacent', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeRange(1, 2);
-      model.insert(3, 'e');
-      model.removeRange(2, 3);
-      model.insertAll(0, ['f', 'g']);
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Left Adjacent', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeRange(2, 4);
-      model.insert(2, 'e');
-
-      model.removeAt(1);
-      model.insertAll(1, ['f', 'g']);
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Right Overlap', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeAt(1);
-      model.insert(1, 'e');
-      model.removeAt(1);
-      model.insertAll(1, ['f', 'g']);
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Left Overlap', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeAt(2);
-      model.insertAll(2, ['e', 'f', 'g']);
-      // a b [e f g] d
-      model.removeRange(1, 3);
-      model.insertAll(1, ['h', 'i', 'j']);
-      // a [h i j] f g d
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Prefix And Suffix One In', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.insert(0, 'z');
-      model.add('z');
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Remove First', () {
-      var model = toObservable([16, 15, 15]);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeAt(0);
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Update Remove', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeAt(2);
-      model.insertAll(2, ['e', 'f', 'g']);  // a b [e f g] d
-      model[0] = 'h';
-      model.removeAt(1);
-
-      applyAndCheckDeltas(model, copy);
-    });
-
-    test('Remove Mid List', () {
-      var model = toObservable(['a', 'b', 'c', 'd']);
-      var copy = model.toList();
-      observeArray(model);
-
-      model.removeAt(2);
-
-      applyAndCheckDeltas(model, copy);
-    });
-  });
-
-  group('edit distance', () {
-    var summary = null;
-
-    observeArray(model) {
-      model.changes.listen((records) { summary = _filter(records); });
-    }
-
-    assertEditDistance(orig, expectDistance) {
-      summary = null;
-      deliverChangeRecords();
-      var actualDistance = 0;
-
-      if (summary != null) {
-        for (var delta in summary) {
-          actualDistance += delta.addedCount + delta.removedCount;
-        }
-      }
-
-      expect(actualDistance, expectDistance);
-    }
-
-    test('add items', () {
-      var model = toObservable([]);
-      observeArray(model);
-      model.addAll([1, 2, 3]);
-      assertEditDistance(model, 3);
-    });
-
-    test('trunacte and add, sharing a contiguous block', () {
-      var model = toObservable(['x', 'x', 'x', 'x', '1', '2', '3']);
-      observeArray(model);
-      model.length = 0;
-      model.addAll(['1', '2', '3', 'y', 'y', 'y', 'y']);
-      // Note: unlike the JS implementation, we don't perform a full diff.
-      // The change records are computed with no regards to the *contents* of
-      // the array. Thus, we get 14 instead of 8.
-      assertEditDistance(model, 14);
-    });
-
-    test('truncate and add, sharing a discontiguous block', () {
-      var model = toObservable(['1', '2', '3', '4', '5']);
-      observeArray(model);
-      model.length = 0;
-      model.addAll(['a', '2', 'y', 'y', '4', '5', 'z', 'z']);
-      // Note: unlike the JS implementation, we don't perform a full diff.
-      // The change records are computed with no regards to the *contents* of
-      // the array. Thus, we get 13 instead of 7.
-      assertEditDistance(model, 13);
-    });
-
-    test('insert at beginning and end', () {
-      var model = toObservable([2, 3, 4]);
-      observeArray(model);
-      model.insert(0, 5);
-      model[2] = 6;
-      model.add(7);
-      assertEditDistance(model, 4);
-    });
-  });
-}
-
-_delta(i, r, a) => new ListChangeRecord(i, removedCount: r, addedCount: a);
-_filter(records) => records.where((r) => r is ListChangeRecord).toList();