[MD Bookmarks] Support elision of bookmark names in the bookmark toast.

chrome/test/data/webui/load_time_data_browsertest.js

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * @constructor
+ * @extends testing.Test
+ */
+function LoadTimeDataTest() {}
+
+LoadTimeDataTest.prototype = {
+  __proto__: testing.Test.prototype,
+
+  /** @override */
+  browsePreload: 'chrome://resources/html/load_time_data.html',
+};
+
+TEST_F('LoadTimeDataTest', 'getStringPieces', function() {
+  function assertSubstitutedPieces(expected, var_args) {
+    var var_args = Array.prototype.slice.call(arguments, 1);
+    var pieces =
+        loadTimeData.getSubstitutedStringPieces.apply(loadTimeData, var_args);
+    assertDeepEquals(expected, pieces);
+
+    // Ensure output matches getStringF.
+    assertEquals(
+        loadTimeData.substituteString.apply(loadTimeData, var_args),
+        pieces.map(p => p.value).join(''));
+  }
+
+  assertSubstitutedPieces([{value: 'paper', arg: null}], 'paper');
+  assertSubstitutedPieces([{value: 'paper', arg: '$1'}], '$1', 'paper');
+
+  assertSubstitutedPieces(
+      [
+        {value: 'i think ', arg: null},
+        {value: 'paper mario', arg: '$1'},
+        {value: ' is a good game', arg: null},
+      ],
+      'i think $1 is a good game', 'paper mario');
+
+  assertSubstitutedPieces(
+      [
+        {value: 'paper mario', arg: '$1'},
+        {value: ' costs $', arg: null},
+        {value: '60', arg: '$2'},
+      ],
+      '$1 costs $$$2', 'paper mario', '60');
+
+  assertSubstitutedPieces(
+      [
+        {value: 'paper mario', arg: '$1'},
+        {value: ' costs $60', arg: null},
+      ],
+      '$1 costs $$60', 'paper mario');
+
+  assertSubstitutedPieces(
+      [
+        {value: 'paper mario', arg: '$1'},
+        {value: ' costs\n$60 ', arg: null},
+        {value: 'today', arg: '$2'},
+      ],
+      '$1 costs\n$$60 $2', 'paper mario', 'today');
+
+  assertSubstitutedPieces(
+      [
+        {value: '$$', arg: null},
+        {value: '1', arg: '$1'},
+        {value: '2', arg: '$2'},
+        {value: '1', arg: '$1'},
+        {value: '$$2', arg: null},
+        {value: '2', arg: '$2'},
+        {value: '$', arg: null},
+        {value: '1', arg: '$1'},
+        {value: '$', arg: null},
+      ],
+      '$$$$$1$2$1$$$$2$2$$$1$$', '1', '2');
+});
+
+TEST_F('LoadTimeDataTest', 'unescapedDollarSign', function() {
+  function assertSubstitutionThrows(label) {
+    assertThrows(() => {
+      loadTimeData.getSubstitutedStringPieces(label);
+    }, 'Assertion failed: Unescaped $ found in localized string.');
+
+    assertThrows(() => {
+      loadTimeData.substituteString(label);
+    }, 'Assertion failed: Unescaped $ found in localized string.');
+  }
+  assertSubstitutionThrows('$');
+  assertSubstitutionThrows('$1$$$a2');
+  assertSubstitutionThrows('$$$');
+  assertSubstitutionThrows('a$');
+  assertSubstitutionThrows('a$\n');
+});