MD History: Refactor how data is created in tests

chrome/test/data/webui/md_history/test_util.js

Index: chrome/test/data/webui/md_history/test_util.js
diff --git a/chrome/test/data/webui/md_history/test_util.js b/chrome/test/data/webui/md_history/test_util.js
index acb77f4d03142d9242589f033837ae2174594dd1..d0a3fc433140dc1161ffcea40af71e00f5ffab85 100644
--- a/chrome/test/data/webui/md_history/test_util.js
+++ b/chrome/test/data/webui/md_history/test_util.js
@@ -10,3 +10,48 @@ function flush(callback) {
   Polymer.dom.flush();
   window.setTimeout(callback, 0);
 }
+
+/**
+ * Create a fake history result with the given timestamp.
+ * @param {number|string} timestamp Timestamp of the entry, as a number in ms or
+ * a string which can be parsed by Date.parse().
+ * @param {string} urlStr The URL to set on this entry.
+ * @return {!HistoryEntry} An object representing a history entry.
+ */
+function createHistoryEntry(timestamp, urlStr) {
+  if (typeof timestamp === 'string')
+    timestamp += ' UTC';
+
+  var d = new Date(timestamp);
+  var url = new URL(urlStr);
+  var domain = url.host;
+  return {
+    allTimestamps: [timestamp],
+    // Formatting the relative day is too hard, will instead display
+    // YYYY-MM-DD.
+    dateRelativeDay: d.toISOString().split('T')[0],
+    dateTimeOfDay: d.getUTCHours() + ':' + d.getUTCMinutes(),
+    domain: domain,
+    starred: false,
+    time: d.getTime(),
+    title: urlStr,
+    url: urlStr
+  };
+}
+
+/**
+ * Create a fake history search result with the given timestamp. Replaces fields
+ * from createHistoryEntry to look like a search result.
+ * @param {number|string} timestamp Timestamp of the entry, as a number in ms or
+ * a string which can be parsed by Date.parse().
+ * @param {string} urlStr The URL to set on this entry.
+ * @return {!HistoryEntry} An object representing a history entry.
+ */
+function createSearchEntry(timestamp, urlStr) {
+  var entry = createHistoryEntry(timestamp, urlStr);
+  entry.dateShort = entry.dateRelativeDay;
+  entry.dateTimeOfDay = '';
+  entry.dateRelativeDay = '';
+
+  return entry;
+}