/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set sts=2 sw=2 et tw=80: */
"use strict";

XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
                                  "resource://gre/modules/PlacesUtils.jsm");

add_task(async function test_bookmarks() {
  function background() {
    let unsortedId, ourId;
    let initialBookmarkCount = 0;
    let createdBookmarks = new Set();
    let createdFolderId;
    let collectedEvents = [];
    const nonExistentId = "000000000000";
    const bookmarkGuids = {
      menuGuid:    "menu________",
      toolbarGuid: "toolbar_____",
      unfiledGuid: "unfiled_____",
    };

    function checkOurBookmark(bookmark) {
      browser.test.assertEq(ourId, bookmark.id, "Bookmark has the expected Id");
      browser.test.assertTrue("parentId" in bookmark, "Bookmark has a parentId");
      browser.test.assertEq(0, bookmark.index, "Bookmark has the expected index"); // We assume there are no other bookmarks.
      browser.test.assertEq("http://example.org/", bookmark.url, "Bookmark has the expected url");
      browser.test.assertEq("test bookmark", bookmark.title, "Bookmark has the expected title");
      browser.test.assertTrue("dateAdded" in bookmark, "Bookmark has a dateAdded");
      browser.test.assertFalse("dateGroupModified" in bookmark, "Bookmark does not have a dateGroupModified");
      browser.test.assertFalse("unmodifiable" in bookmark, "Bookmark is not unmodifiable");
    }

    function checkBookmark(expected, bookmark) {
      browser.test.assertEq(expected.url, bookmark.url, "Bookmark has the expected url");
      browser.test.assertEq(expected.title, bookmark.title, "Bookmark has the expected title");
      browser.test.assertEq(expected.index, bookmark.index, "Bookmark has expected index");
      if ("parentId" in expected) {
        browser.test.assertEq(expected.parentId, bookmark.parentId, "Bookmark has the expected parentId");
      }
    }

    function expectedError() {
      browser.test.fail("Did not get expected error");
    }

    function checkOnCreated(id, parentId, index, title, url, dateAdded) {
      let createdData = collectedEvents.pop();
      browser.test.assertEq("onCreated", createdData.event, "onCreated was the last event received");
      browser.test.assertEq(id, createdData.id, "onCreated event received the expected id");
      let bookmark = createdData.bookmark;
      browser.test.assertEq(id, bookmark.id, "onCreated event received the expected bookmark id");
      browser.test.assertEq(parentId, bookmark.parentId, "onCreated event received the expected bookmark parentId");
      browser.test.assertEq(index, bookmark.index, "onCreated event received the expected bookmark index");
      browser.test.assertEq(title, bookmark.title, "onCreated event received the expected bookmark title");
      browser.test.assertEq(url, bookmark.url, "onCreated event received the expected bookmark url");
      browser.test.assertEq(dateAdded, bookmark.dateAdded, "onCreated event received the expected bookmark dateAdded");
    }

    function checkOnChanged(id, url, title) {
      // If both url and title are changed, then url is fired last.
      let changedData = collectedEvents.pop();
      browser.test.assertEq("onChanged", changedData.event, "onChanged was the last event received");
      browser.test.assertEq(id, changedData.id, "onChanged event received the expected id");
      browser.test.assertEq(url, changedData.info.url, "onChanged event received the expected url");
      // title is fired first.
      changedData = collectedEvents.pop();
      browser.test.assertEq("onChanged", changedData.event, "onChanged was the last event received");
      browser.test.assertEq(id, changedData.id, "onChanged event received the expected id");
      browser.test.assertEq(title, changedData.info.title, "onChanged event received the expected title");
    }

    function checkOnMoved(id, parentId, oldParentId, index, oldIndex) {
      let movedData = collectedEvents.pop();
      browser.test.assertEq("onMoved", movedData.event, "onMoved was the last event received");
      browser.test.assertEq(id, movedData.id, "onMoved event received the expected id");
      let info = movedData.info;
      browser.test.assertEq(parentId, info.parentId, "onMoved event received the expected parentId");
      browser.test.assertEq(oldParentId, info.oldParentId, "onMoved event received the expected oldParentId");
      browser.test.assertEq(index, info.index, "onMoved event received the expected index");
      browser.test.assertEq(oldIndex, info.oldIndex, "onMoved event received the expected oldIndex");
    }

    function checkOnRemoved(id, parentId, index, url) {
      let removedData = collectedEvents.pop();
      browser.test.assertEq("onRemoved", removedData.event, "onRemoved was the last event received");
      browser.test.assertEq(id, removedData.id, "onRemoved event received the expected id");
      let info = removedData.info;
      browser.test.assertEq(parentId, removedData.info.parentId, "onRemoved event received the expected parentId");
      browser.test.assertEq(index, removedData.info.index, "onRemoved event received the expected index");
      let node = info.node;
      browser.test.assertEq(id, node.id, "onRemoved event received the expected node id");
      browser.test.assertEq(parentId, node.parentId, "onRemoved event received the expected node parentId");
      browser.test.assertEq(index, node.index, "onRemoved event received the expected node index");
      browser.test.assertEq(url, node.url, "onRemoved event received the expected node url");
    }

    browser.bookmarks.onChanged.addListener((id, info) => {
      collectedEvents.push({event: "onChanged", id, info});
    });

    browser.bookmarks.onCreated.addListener((id, bookmark) => {
      collectedEvents.push({event: "onCreated", id, bookmark});
    });

    browser.bookmarks.onMoved.addListener((id, info) => {
      collectedEvents.push({event: "onMoved", id, info});
    });

    browser.bookmarks.onRemoved.addListener((id, info) => {
      collectedEvents.push({event: "onRemoved", id, info});
    });

    browser.bookmarks.get(["not-a-bookmark-guid"]).then(expectedError, invalidGuidError => {
      browser.test.assertTrue(
        invalidGuidError.message.includes("Invalid value for property 'guid': \"not-a-bookmark-guid\""),
        "Expected error thrown when trying to get a bookmark using an invalid guid"
      );

      return browser.bookmarks.get([nonExistentId]).then(expectedError, nonExistentIdError => {
        browser.test.assertTrue(
          nonExistentIdError.message.includes("Bookmark not found"),
          "Expected error thrown when trying to get a bookmark using a non-existent Id"
        );
      });
    }).then(() => {
      return browser.bookmarks.search({});
    }).then(results => {
      initialBookmarkCount = results.length;
      return browser.bookmarks.create({title: "test bookmark", url: "http://example.org"});
    }).then(result => {
      ourId = result.id;
      checkOurBookmark(result);
      browser.test.assertEq(1, collectedEvents.length, "1 expected event received");
      checkOnCreated(ourId, bookmarkGuids.unfiledGuid, 0, "test bookmark", "http://example.org/", result.dateAdded);

      return browser.bookmarks.get(ourId);
    }).then(results => {
      browser.test.assertEq(results.length, 1);
      checkOurBookmark(results[0]);

      unsortedId = results[0].parentId;
      return browser.bookmarks.get(unsortedId);
    }).then(results => {
      let folder = results[0];
      browser.test.assertEq(1, results.length, "1 bookmark was returned");

      browser.test.assertEq(unsortedId, folder.id, "Folder has the expected id");
      browser.test.assertTrue("parentId" in folder, "Folder has a parentId");
      browser.test.assertTrue("index" in folder, "Folder has an index");
      browser.test.assertFalse("url" in folder, "Folder does not have a url");
      browser.test.assertEq("Other Bookmarks", folder.title, "Folder has the expected title");
      browser.test.assertTrue("dateAdded" in folder, "Folder has a dateAdded");
      browser.test.assertTrue("dateGroupModified" in folder, "Folder has a dateGroupModified");
      browser.test.assertFalse("unmodifiable" in folder, "Folder is not unmodifiable"); // TODO: Do we want to enable this?

      return browser.bookmarks.getChildren(unsortedId);
    }).then(results => {
      browser.test.assertEq(1, results.length, "The folder has one child");
      checkOurBookmark(results[0]);

      return browser.bookmarks.update(nonExistentId, {title: "new test title"}).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("No bookmarks found for the provided GUID"),
          "Expected error thrown when trying to update a non-existent bookmark"
        );

        return browser.bookmarks.update(ourId, {title: "new test title", url: "http://example.com/"});
      });
    }).then(result => {
      browser.test.assertEq("new test title", result.title, "Updated bookmark has the expected title");
      browser.test.assertEq("http://example.com/", result.url, "Updated bookmark has the expected URL");
      browser.test.assertEq(ourId, result.id, "Updated bookmark has the expected id");

      browser.test.assertEq(2, collectedEvents.length, "2 expected events received");
      checkOnChanged(ourId, "http://example.com/", "new test title");

      return Promise.resolve().then(() => {
        return browser.bookmarks.update(ourId, {url: "this is not a valid url"});
      }).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Invalid bookmark:"),
          "Expected error thrown when trying update with an invalid url"
        );
        return browser.bookmarks.getTree();
      });
    }).then(results => {
      browser.test.assertEq(1, results.length, "getTree returns one result");
      let bookmark = results[0].children.find(bookmarkItem => bookmarkItem.id == unsortedId);
      browser.test.assertEq(
          "Other Bookmarks",
          bookmark.title,
          "Folder returned from getTree has the expected title"
      );

      return browser.bookmarks.create({parentId: "invalid"}).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Invalid bookmark"),
          "Expected error thrown when trying to create a bookmark with an invalid parentId"
        );
        browser.test.assertTrue(
            error.message.includes(`"parentGuid":"invalid"`),
            "Expected error thrown when trying to create a bookmark with an invalid parentId"
        );
      });
    }).then(() => {
      return browser.bookmarks.remove(ourId);
    }).then(result => {
      browser.test.assertEq(undefined, result, "Removing a bookmark returns undefined");

      browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
      checkOnRemoved(ourId, bookmarkGuids.unfiledGuid, 0, "http://example.com/");

      return browser.bookmarks.get(ourId).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Bookmark not found"),
          "Expected error thrown when trying to get a removed bookmark"
        );
      });
    }).then(() => {
      return browser.bookmarks.remove(nonExistentId).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("No bookmarks found for the provided GUID"),
          "Expected error thrown when trying removed a non-existent bookmark"
        );
      });
    }).then(() => {
      // test bookmarks.search
      return Promise.all([
        browser.bookmarks.create({title: "MØzillä", url: "http://møzîllä.örg/"}),
        browser.bookmarks.create({title: "Example", url: "http://example.org/"}),
        browser.bookmarks.create({title: "Mozilla Folder"}),
        browser.bookmarks.create({title: "EFF", url: "http://eff.org/"}),
        browser.bookmarks.create({title: "Menu Item", url: "http://menu.org/", parentId: bookmarkGuids.menuGuid}),
        browser.bookmarks.create({title: "Toolbar Item", url: "http://toolbar.org/", parentId: bookmarkGuids.toolbarGuid}),
      ]);
    }).then(results => {
      browser.test.assertEq(6, collectedEvents.length, "6 expected events received");
      checkOnCreated(results[5].id, bookmarkGuids.toolbarGuid, 0, "Toolbar Item", "http://toolbar.org/", results[5].dateAdded);
      checkOnCreated(results[4].id, bookmarkGuids.menuGuid, 0, "Menu Item", "http://menu.org/", results[4].dateAdded);
      checkOnCreated(results[3].id, bookmarkGuids.unfiledGuid, 0, "EFF", "http://eff.org/", results[3].dateAdded);
      checkOnCreated(results[2].id, bookmarkGuids.unfiledGuid, 0, "Mozilla Folder", undefined, results[2].dateAdded);
      checkOnCreated(results[1].id, bookmarkGuids.unfiledGuid, 0, "Example", "http://example.org/", results[1].dateAdded);
      checkOnCreated(results[0].id, bookmarkGuids.unfiledGuid, 0, "MØzillä", "http://møzîllä.örg/", results[0].dateAdded);

      for (let result of results) {
        if (result.title !== "Mozilla Folder") {
          createdBookmarks.add(result.id);
        }
      }
      let folderResult = results[2];
      createdFolderId = folderResult.id;
      return Promise.all([
        browser.bookmarks.create({title: "Mozilla", url: "http://allizom.org/", parentId: createdFolderId}),
        browser.bookmarks.create({title: "Mozilla Corporation", url: "http://allizom.com/", parentId: createdFolderId}),
        browser.bookmarks.create({title: "Firefox", url: "http://allizom.org/firefox/", parentId: createdFolderId}),
      ]).then(newBookmarks => {
        browser.test.assertEq(3, collectedEvents.length, "3 expected events received");
        checkOnCreated(newBookmarks[2].id, createdFolderId, 0, "Firefox", "http://allizom.org/firefox/", newBookmarks[2].dateAdded);
        checkOnCreated(newBookmarks[1].id, createdFolderId, 0, "Mozilla Corporation", "http://allizom.com/", newBookmarks[1].dateAdded);
        checkOnCreated(newBookmarks[0].id, createdFolderId, 0, "Mozilla", "http://allizom.org/", newBookmarks[0].dateAdded);

        return browser.bookmarks.create({
          title: "About Mozilla",
          url: "http://allizom.org/about/",
          parentId: createdFolderId,
          index: 1,
        });
      }).then(result => {
        browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
        checkOnCreated(result.id, createdFolderId, 1, "About Mozilla", "http://allizom.org/about/", result.dateAdded);

        // returns all items on empty object
        return browser.bookmarks.search({});
      }).then(bookmarksSearchResults => {
        browser.test.assertTrue(bookmarksSearchResults.length >= 9, "At least as many bookmarks as added were returned by search({})");

        return Promise.resolve().then(() => {
          return browser.bookmarks.remove(createdFolderId);
        }).then(expectedError, error => {
          browser.test.assertTrue(
            error.message.includes("Cannot remove a non-empty folder"),
            "Expected error thrown when trying to remove a non-empty folder"
          );
          return browser.bookmarks.getSubTree(createdFolderId);
        });
      });
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of nodes returned by getSubTree");
      browser.test.assertEq("Mozilla Folder", results[0].title, "Folder has the expected title");
      browser.test.assertEq(bookmarkGuids.unfiledGuid, results[0].parentId, "Folder has the expected parentId");
      let children = results[0].children;
      browser.test.assertEq(4, children.length, "Expected number of bookmarks returned by getSubTree");
      browser.test.assertEq("Firefox", children[0].title, "Bookmark has the expected title");
      browser.test.assertEq("About Mozilla", children[1].title, "Bookmark has the expected title");
      browser.test.assertEq(1, children[1].index, "Bookmark has the expected index");
      browser.test.assertEq("Mozilla Corporation", children[2].title, "Bookmark has the expected title");
      browser.test.assertEq("Mozilla", children[3].title, "Bookmark has the expected title");

      // throws an error for invalid query objects
      Promise.resolve().then(() => {
        return browser.bookmarks.search();
      }).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Incorrect argument types for bookmarks.search"),
          "Expected error thrown when trying to search with no arguments"
        );
      });

      Promise.resolve().then(() => {
        return browser.bookmarks.search(null);
      }).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Incorrect argument types for bookmarks.search"),
          "Expected error thrown when trying to search with null as an argument"
        );
      });

      Promise.resolve().then(() => {
        return browser.bookmarks.search(function() {});
      }).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Incorrect argument types for bookmarks.search"),
          "Expected error thrown when trying to search with a function as an argument"
        );
      });

      Promise.resolve().then(() => {
        return browser.bookmarks.search({banana: "banana"});
      }).then(expectedError, error => {
        let substr = `an unexpected "banana" property`;
        browser.test.assertTrue(
          error.message.includes(substr),
          `Expected error ${JSON.stringify(error.message)} to contain ${JSON.stringify(substr)}`);
      });

      Promise.resolve().then(() => {
        return browser.bookmarks.search({url: "spider-man vs. batman"});
      }).then(expectedError, error => {
        let substr = 'must match the format "url"';
        browser.test.assertTrue(
          error.message.includes(substr),
          `Expected error ${JSON.stringify(error.message)} to contain ${JSON.stringify(substr)}`);
      });

      // queries the full url
      return browser.bookmarks.search("http://example.org/");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for url search");
      checkBookmark({title: "Example", url: "http://example.org/", index: 2}, results[0]);

      // queries a partial url
      return browser.bookmarks.search("example.org");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for url search");
      checkBookmark({title: "Example", url: "http://example.org/", index: 2}, results[0]);

      // queries the title
      return browser.bookmarks.search("EFF");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for title search");
      checkBookmark({title: "EFF", url: "http://eff.org/", index: 0, parentId: bookmarkGuids.unfiledGuid}, results[0]);

      // finds menu items
      return browser.bookmarks.search("Menu Item");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for menu item search");
      checkBookmark({title: "Menu Item", url: "http://menu.org/", index: 0, parentId: bookmarkGuids.menuGuid}, results[0]);

      // finds toolbar items
      return browser.bookmarks.search("Toolbar Item");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for toolbar item search");
      checkBookmark({title: "Toolbar Item", url: "http://toolbar.org/", index: 0, parentId: bookmarkGuids.toolbarGuid}, results[0]);

      // finds folders
      return browser.bookmarks.search("Mozilla Folder");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of folders returned");
      browser.test.assertEq("Mozilla Folder", results[0].title, "Folder has the expected title");

      // is case-insensitive
      return browser.bookmarks.search("corporation");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returnedfor case-insensitive search");
      browser.test.assertEq("Mozilla Corporation", results[0].title, "Bookmark has the expected title");

      // is case-insensitive for non-ascii
      return browser.bookmarks.search("MøZILLÄ");
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for non-ascii search");
      browser.test.assertEq("MØzillä", results[0].title, "Bookmark has the expected title");

      // returns multiple results
      return browser.bookmarks.search("allizom");
    }).then(results => {
      browser.test.assertEq(4, results.length, "Expected number of multiple results returned");
      browser.test.assertEq("Mozilla", results[0].title, "Bookmark has the expected title");
      browser.test.assertEq("Mozilla Corporation", results[1].title, "Bookmark has the expected title");
      browser.test.assertEq("Firefox", results[2].title, "Bookmark has the expected title");
      browser.test.assertEq("About Mozilla", results[3].title, "Bookmark has the expected title");

      // accepts a url field
      return browser.bookmarks.search({url: "http://allizom.com/"});
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for url field");
      checkBookmark({title: "Mozilla Corporation", url: "http://allizom.com/", index: 2}, results[0]);

      // normalizes urls
      return browser.bookmarks.search({url: "http://allizom.com"});
    }).then(results => {
      browser.test.assertEq(results.length, 1, "Expected number of results returned for normalized url field");
      checkBookmark({title: "Mozilla Corporation", url: "http://allizom.com/", index: 2}, results[0]);

      // normalizes urls even more
      return browser.bookmarks.search({url: "http:allizom.com"});
    }).then(results => {
      browser.test.assertEq(results.length, 1, "Expected number of results returned for normalized url field");
      checkBookmark({title: "Mozilla Corporation", url: "http://allizom.com/", index: 2}, results[0]);

      // accepts a title field
      return browser.bookmarks.search({title: "Mozilla"});
    }).then(results => {
      browser.test.assertEq(results.length, 1, "Expected number of results returned for title field");
      checkBookmark({title: "Mozilla", url: "http://allizom.org/", index: 3}, results[0]);

      // can combine title and query
      return browser.bookmarks.search({title: "Mozilla", query: "allizom"});
    }).then(results => {
      browser.test.assertEq(1, results.length, "Expected number of results returned for title and query fields");
      checkBookmark({title: "Mozilla", url: "http://allizom.org/", index: 3}, results[0]);

      // uses AND conditions
      return browser.bookmarks.search({title: "EFF", query: "allizom"});
    }).then(results => {
      browser.test.assertEq(
        0,
        results.length,
        "Expected number of results returned for non-matching title and query fields"
      );

      // returns an empty array on item not found
      return browser.bookmarks.search("microsoft");
    }).then(results => {
      browser.test.assertEq(0, results.length, "Expected number of results returned for non-matching search");

      return Promise.resolve().then(() => {
        return browser.bookmarks.getRecent("");
      }).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Incorrect argument types for bookmarks.getRecent"),
          "Expected error thrown when calling getRecent with an empty string"
        );
      });
    }).then(() => {
      return Promise.resolve().then(() => {
        return browser.bookmarks.getRecent(1.234);
      }).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("Incorrect argument types for bookmarks.getRecent"),
          "Expected error thrown when calling getRecent with a decimal number"
        );
      });
    }).then(() => {
      return Promise.all([
        browser.bookmarks.search("corporation"),
        browser.bookmarks.getChildren(bookmarkGuids.menuGuid),
      ]);
    }).then(results => {
      let corporationBookmark = results[0][0];
      let childCount = results[1].length;

      browser.test.assertEq(2, corporationBookmark.index, "Bookmark has the expected index");

      return browser.bookmarks.move(corporationBookmark.id, {index: 0}).then(result => {
        browser.test.assertEq(0, result.index, "Bookmark has the expected index");

        browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
        checkOnMoved(corporationBookmark.id, createdFolderId, createdFolderId, 0, 2);

        return browser.bookmarks.move(corporationBookmark.id, {parentId: bookmarkGuids.menuGuid});
      }).then(result => {
        browser.test.assertEq(bookmarkGuids.menuGuid, result.parentId, "Bookmark has the expected parent");
        browser.test.assertEq(childCount, result.index, "Bookmark has the expected index");

        browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
        checkOnMoved(corporationBookmark.id, bookmarkGuids.menuGuid, createdFolderId, 1, 0);

        return browser.bookmarks.move(corporationBookmark.id, {index: 0});
      }).then(result => {
        browser.test.assertEq(bookmarkGuids.menuGuid, result.parentId, "Bookmark has the expected parent");
        browser.test.assertEq(0, result.index, "Bookmark has the expected index");

        browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
        checkOnMoved(corporationBookmark.id, bookmarkGuids.menuGuid, bookmarkGuids.menuGuid, 0, 1);

        return browser.bookmarks.move(corporationBookmark.id, {parentId: bookmarkGuids.toolbarGuid, index: 1});
      }).then(result => {
        browser.test.assertEq(bookmarkGuids.toolbarGuid, result.parentId, "Bookmark has the expected parent");
        browser.test.assertEq(1, result.index, "Bookmark has the expected index");

        browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
        checkOnMoved(corporationBookmark.id, bookmarkGuids.toolbarGuid, bookmarkGuids.menuGuid, 1, 0);

        createdBookmarks.add(corporationBookmark.id);
      });
    }).then(() => {
      return browser.bookmarks.getRecent(4);
    }).then(results => {
      browser.test.assertEq(4, results.length, "Expected number of results returned by getRecent");
      let prevDate = results[0].dateAdded;
      for (let bookmark of results) {
        browser.test.assertTrue(bookmark.dateAdded <= prevDate, "The recent bookmarks are sorted by dateAdded");
        prevDate = bookmark.dateAdded;
      }
      let bookmarksByTitle = results.sort((a, b) => {
        return a.title.localeCompare(b.title);
      });
      browser.test.assertEq("About Mozilla", bookmarksByTitle[0].title, "Bookmark has the expected title");
      browser.test.assertEq("Firefox", bookmarksByTitle[1].title, "Bookmark has the expected title");
      browser.test.assertEq("Mozilla", bookmarksByTitle[2].title, "Bookmark has the expected title");
      browser.test.assertEq("Mozilla Corporation", bookmarksByTitle[3].title, "Bookmark has the expected title");

      return browser.bookmarks.search({});
    }).then(results => {
      let startBookmarkCount = results.length;

      return browser.bookmarks.search({title: "Mozilla Folder"}).then(result => {
        return browser.bookmarks.removeTree(result[0].id);
      }).then(() => {
        browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
        checkOnRemoved(createdFolderId, bookmarkGuids.unfiledGuid, 1);

        return browser.bookmarks.search({}).then(searchResults => {
          browser.test.assertEq(
            startBookmarkCount - 4,
            searchResults.length,
            "Expected number of results returned after removeTree");
        });
      });
    }).then(() => {
      return browser.bookmarks.create({title: "Empty Folder"});
    }).then(result => {
      let emptyFolderId = result.id;

      browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
      checkOnCreated(emptyFolderId, bookmarkGuids.unfiledGuid, 3, "Empty Folder", undefined, result.dateAdded);

      browser.test.assertEq("Empty Folder", result.title, "Folder has the expected title");
      return browser.bookmarks.remove(emptyFolderId).then(() => {
        browser.test.assertEq(1, collectedEvents.length, "1 expected events received");
        checkOnRemoved(emptyFolderId, bookmarkGuids.unfiledGuid, 3);

        return browser.bookmarks.get(emptyFolderId).then(expectedError, error => {
          browser.test.assertTrue(
            error.message.includes("Bookmark not found"),
            "Expected error thrown when trying to get a removed folder"
          );
        });
      });
    }).then(() => {
      return browser.bookmarks.getChildren(nonExistentId).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("root is null"),
          "Expected error thrown when trying to getChildren for a non-existent folder"
        );
      });
    }).then(() => {
      return Promise.resolve().then(() => {
        return browser.bookmarks.move(nonExistentId, {});
      }).then(expectedError, error => {
        browser.test.assertTrue(
          error.message.includes("No bookmarks found for the provided GUID"),
          "Expected error thrown when calling move with a non-existent bookmark"
        );
      });
    }).then(() => {
      // remove all created bookmarks
      let promises = Array.from(createdBookmarks, guid => browser.bookmarks.remove(guid));
      return Promise.all(promises);
    }).then(() => {
      browser.test.assertEq(createdBookmarks.size, collectedEvents.length, "expected number of events received");

      return browser.bookmarks.search({});
    }).then(results => {
      browser.test.assertEq(initialBookmarkCount, results.length, "All created bookmarks have been removed");

      return browser.test.notifyPass("bookmarks");
    }).catch(error => {
      browser.test.fail(`Error: ${String(error)} :: ${error.stack}`);
      browser.test.notifyFail("bookmarks");
    });
  }


  let extension = ExtensionTestUtils.loadExtension({
    background,
    manifest: {
      permissions: ["bookmarks"],
    },
  });

  await extension.startup();
  await extension.awaitFinish("bookmarks");
  await extension.unload();
});

add_task(async function test_get_recent_with_tag_and_query() {
  function background() {
    browser.bookmarks.getRecent(100).then(bookmarks => {
      browser.test.sendMessage("bookmarks", bookmarks);
    });
  }

  let extension = ExtensionTestUtils.loadExtension({
    background,
    manifest: {
      permissions: ["bookmarks"],
    },
  });

  // Start with an empty bookmarks database.
  await PlacesUtils.bookmarks.eraseEverything();

  let createdBookmarks = [];
  for (let i = 0; i < 3; i++) {
    let bookmark = {
      type: PlacesUtils.bookmarks.TYPE_BOOKMARK,
      url: `http://example.com/${i}`,
      title: `My bookmark ${i}`,
      parentGuid: PlacesUtils.bookmarks.unfiledGuid,
    };
    createdBookmarks.unshift(bookmark);
    await PlacesUtils.bookmarks.insert(bookmark);
  }

  // Add a tag to the most recent url to prove it doesn't get returned.
  PlacesUtils.tagging.tagURI(NetUtil.newURI("http://example.com/${i}"), ["Test Tag"]);

  // Add a query bookmark.
  let queryURL = `place:folder=${PlacesUtils.bookmarksMenuFolderId}&queryType=1`;
  await PlacesUtils.bookmarks.insert({
    parentGuid: PlacesUtils.bookmarks.unfiledGuid,
    url: queryURL,
    title: "a test query"});

  await extension.startup();
  let receivedBookmarks = await extension.awaitMessage("bookmarks");

  equal(receivedBookmarks.length, 3, "The expected number of bookmarks was returned.");
  for (let i = 0; i < 3; i++) {
    let actual = receivedBookmarks[i];
    let expected = createdBookmarks[i];
    equal(actual.url, expected.url, "Bookmark has the expected url.");
    equal(actual.title, expected.title, "Bookmark has the expected title.");
    equal(actual.parentId, expected.parentGuid, "Bookmark has the expected parentId.");
  }

  await extension.unload();
});

add_task(async function test_tree_with_empty_folder() {
  async function background() {
    await browser.bookmarks.create({title: "Empty Folder"});
    let nonEmptyFolder = await browser.bookmarks.create({title: "Non-Empty Folder"});
    await browser.bookmarks.create({title: "A bookmark", url: "http://example.com", parentId: nonEmptyFolder.id});

    let tree = await browser.bookmarks.getSubTree(nonEmptyFolder.parentId);
    browser.test.assertEq(0,
      tree[0].children[0].children.length,
      "The empty folder returns an empty array for children.");
    browser.test.assertEq(1,
      tree[0].children[1].children.length,
      "The non-empty folder returns a single item array for children.");

    let children = await browser.bookmarks.getChildren(nonEmptyFolder.parentId);
    // getChildren should only return immediate children. This is not tested in the
    // monster test above.
    for (let child of children) {
      browser.test.assertEq(undefined,
        child.children,
        "Child from getChildren does not contain any children.");
    }

    browser.test.sendMessage("done");
  }

  let extension = ExtensionTestUtils.loadExtension({
    background,
    manifest: {
      permissions: ["bookmarks"],
    },
  });

  // Start with an empty bookmarks database.
  await PlacesUtils.bookmarks.eraseEverything();

  await extension.startup();
  await extension.awaitMessage("done");

  await extension.unload();
});
