summaryrefslogtreecommitdiffstats
path: root/browser/components/backup/tests/xpcshell/test_PreferencesBackupResource.js
blob: 6845431bb86a3efc154246fb97154de7bf1b9dcb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/* Any copyright is dedicated to the Public Domain.
https://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

const { PreferencesBackupResource } = ChromeUtils.importESModule(
  "resource:///modules/backup/PreferencesBackupResource.sys.mjs"
);

/**
 * Test that the measure method correctly collects the disk-sizes of things that
 * the PreferencesBackupResource is meant to back up.
 */
add_task(async function test_measure() {
  Services.fog.testResetFOG();

  const EXPECTED_PREFERENCES_KILOBYTES_SIZE = 415;
  const tempDir = await IOUtils.createUniqueDirectory(
    PathUtils.tempDir,
    "PreferencesBackupResource-measure-test"
  );
  const mockFiles = [
    { path: "prefs.js", sizeInKB: 20 },
    { path: "xulstore.json", sizeInKB: 1 },
    { path: "permissions.sqlite", sizeInKB: 100 },
    { path: "content-prefs.sqlite", sizeInKB: 260 },
    { path: "containers.json", sizeInKB: 1 },
    { path: "handlers.json", sizeInKB: 1 },
    { path: "search.json.mozlz4", sizeInKB: 1 },
    { path: "user.js", sizeInKB: 2 },
    { path: ["chrome", "userChrome.css"], sizeInKB: 5 },
    { path: ["chrome", "userContent.css"], sizeInKB: 5 },
    { path: ["chrome", "css", "mockStyles.css"], sizeInKB: 5 },
  ];

  await createTestFiles(tempDir, mockFiles);

  let preferencesBackupResource = new PreferencesBackupResource();

  await preferencesBackupResource.measure(tempDir);

  let measurement = Glean.browserBackup.preferencesSize.testGetValue();
  let scalars = TelemetryTestUtils.getProcessScalars("parent", false, false);

  TelemetryTestUtils.assertScalar(
    scalars,
    "browser.backup.preferences_size",
    measurement,
    "Glean and telemetry measurements for preferences data should be equal"
  );
  Assert.equal(
    measurement,
    EXPECTED_PREFERENCES_KILOBYTES_SIZE,
    "Should have collected the correct glean measurement for preferences files"
  );

  await maybeRemovePath(tempDir);
});

/**
 * Test that the backup method correctly copies items from the profile directory
 * into the staging directory.
 */
add_task(async function test_backup() {
  let sandbox = sinon.createSandbox();

  let preferencesBackupResource = new PreferencesBackupResource();
  let sourcePath = await IOUtils.createUniqueDirectory(
    PathUtils.tempDir,
    "PreferencesBackupResource-source-test"
  );
  let stagingPath = await IOUtils.createUniqueDirectory(
    PathUtils.tempDir,
    "PreferencesBackupResource-staging-test"
  );

  const simpleCopyFiles = [
    { path: "xulstore.json" },
    { path: "containers.json" },
    { path: "handlers.json" },
    { path: "search.json.mozlz4" },
    { path: "user.js" },
    { path: ["chrome", "userChrome.css"] },
    { path: ["chrome", "userContent.css"] },
    { path: ["chrome", "childFolder", "someOtherStylesheet.css"] },
  ];
  await createTestFiles(sourcePath, simpleCopyFiles);

  // We have no need to test that Sqlite.sys.mjs's backup method is working -
  // this is something that is tested in Sqlite's own tests. We can just make
  // sure that it's being called using sinon. Unfortunately, we cannot do the
  // same thing with IOUtils.copy, as its methods are not stubbable.
  let fakeConnection = {
    backup: sandbox.stub().resolves(true),
    close: sandbox.stub().resolves(true),
  };
  sandbox.stub(Sqlite, "openConnection").returns(fakeConnection);

  await preferencesBackupResource.backup(stagingPath, sourcePath);

  await assertFilesExist(stagingPath, simpleCopyFiles);

  // Next, we'll make sure that the Sqlite connection had `backup` called on it
  // with the right arguments.
  Assert.ok(
    fakeConnection.backup.calledTwice,
    "Called backup the expected number of times for all connections"
  );
  Assert.ok(
    fakeConnection.backup.firstCall.calledWith(
      PathUtils.join(stagingPath, "permissions.sqlite")
    ),
    "Called backup on the permissions.sqlite Sqlite connection"
  );
  Assert.ok(
    fakeConnection.backup.secondCall.calledWith(
      PathUtils.join(stagingPath, "content-prefs.sqlite")
    ),
    "Called backup on the content-prefs.sqlite Sqlite connection"
  );

  // And we'll make sure that preferences were properly written out.
  Assert.ok(
    await IOUtils.exists(PathUtils.join(stagingPath, "prefs.js")),
    "prefs.js should exist in the staging folder"
  );

  await maybeRemovePath(stagingPath);
  await maybeRemovePath(sourcePath);

  sandbox.restore();
});