1 files changed, 281 insertions, 0 deletions
diff --git a/services/sync/tests/unit/test_syncengine.js b/services/sync/tests/unit/test_syncengine.js
new file mode 100644
index 0000000000..07fcfdcff1
--- /dev/null
+++ b/services/sync/tests/unit/test_syncengine.js
@@ -0,0 +1,281 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const { Service } = ChromeUtils.importESModule(
+  "resource://services-sync/service.sys.mjs"
+);
+
+async function makeSteamEngine() {
+  let engine = new SyncEngine("Steam", Service);
+  await engine.initialize();
+  return engine;
+}
+
+function guidSetOfSize(length) {
+  return new SerializableSet(Array.from({ length }, () => Utils.makeGUID()));
+}
+
+function assertSetsEqual(a, b) {
+  // Assert.deepEqual doesn't understand Set.
+  Assert.deepEqual(Array.from(a).sort(), Array.from(b).sort());
+}
+
+async function testSteamEngineStorage(test) {
+  try {
+    let setupEngine = await makeSteamEngine();
+
+    if (test.setup) {
+      await test.setup(setupEngine);
+    }
+
+    // Finalize the engine to flush the backlog and previous failed to disk.
+    await setupEngine.finalize();
+
+    if (test.beforeCheck) {
+      await test.beforeCheck();
+    }
+
+    let checkEngine = await makeSteamEngine();
+    await test.check(checkEngine);
+
+    await checkEngine.resetClient();
+    await checkEngine.finalize();
+  } finally {
+    Svc.Prefs.resetBranch("");
+  }
+}
+
+let server;
+
+add_task(async function setup() {
+  server = httpd_setup({});
+});
+
+add_task(async function test_url_attributes() {
+  _("SyncEngine url attributes");
+  await SyncTestingInfrastructure(server);
+  Service.clusterURL = "https://cluster/1.1/foo/";
+  let engine = await makeSteamEngine();
+  try {
+    Assert.equal(engine.storageURL, "https://cluster/1.1/foo/storage/");
+    Assert.equal(engine.engineURL, "https://cluster/1.1/foo/storage/steam");
+    Assert.equal(engine.metaURL, "https://cluster/1.1/foo/storage/meta/global");
+  } finally {
+    Svc.Prefs.resetBranch("");
+  }
+});
+
+add_task(async function test_syncID() {
+  _("SyncEngine.syncID corresponds to preference");
+  await SyncTestingInfrastructure(server);
+  let engine = await makeSteamEngine();
+  try {
+    // Ensure pristine environment
+    Assert.equal(Svc.Prefs.get("steam.syncID"), undefined);
+    Assert.equal(await engine.getSyncID(), "");
+
+    // Performing the first get on the attribute will generate a new GUID.
+    Assert.equal(await engine.resetLocalSyncID(), "fake-guid-00");
+    Assert.equal(Svc.Prefs.get("steam.syncID"), "fake-guid-00");
+
+    Svc.Prefs.set("steam.syncID", Utils.makeGUID());
+    Assert.equal(Svc.Prefs.get("steam.syncID"), "fake-guid-01");
+    Assert.equal(await engine.getSyncID(), "fake-guid-01");
+  } finally {
+    Svc.Prefs.resetBranch("");
+  }
+});
+
+add_task(async function test_lastSync() {
+  _("SyncEngine.lastSync corresponds to preferences");
+  await SyncTestingInfrastructure(server);
+  let engine = await makeSteamEngine();
+  try {
+    // Ensure pristine environment
+    Assert.equal(Svc.Prefs.get("steam.lastSync"), undefined);
+    Assert.equal(await engine.getLastSync(), 0);
+
+    // Floats are properly stored as floats and synced with the preference
+    await engine.setLastSync(123.45);
+    Assert.equal(await engine.getLastSync(), 123.45);
+    Assert.equal(Svc.Prefs.get("steam.lastSync"), "123.45");
+
+    // Integer is properly stored
+    await engine.setLastSync(67890);
+    Assert.equal(await engine.getLastSync(), 67890);
+    Assert.equal(Svc.Prefs.get("steam.lastSync"), "67890");
+
+    // resetLastSync() resets the value (and preference) to 0
+    await engine.resetLastSync();
+    Assert.equal(await engine.getLastSync(), 0);
+    Assert.equal(Svc.Prefs.get("steam.lastSync"), "0");
+  } finally {
+    Svc.Prefs.resetBranch("");
+  }
+});
+
+add_task(async function test_toFetch() {
+  _("SyncEngine.toFetch corresponds to file on disk");
+  await SyncTestingInfrastructure(server);
+
+  await testSteamEngineStorage({
+    toFetch: guidSetOfSize(3),
+    setup(engine) {
+      // Ensure pristine environment
+      Assert.equal(engine.toFetch.size, 0);
+
+      // Write file to disk
+      engine.toFetch = this.toFetch;
+      Assert.equal(engine.toFetch, this.toFetch);
+    },
+    check(engine) {
+      // toFetch is written asynchronously
+      assertSetsEqual(engine.toFetch, this.toFetch);
+    },
+  });
+
+  await testSteamEngineStorage({
+    toFetch: guidSetOfSize(4),
+    toFetch2: guidSetOfSize(5),
+    setup(engine) {
+      // Make sure it work for consecutive writes before the callback is executed.
+      engine.toFetch = this.toFetch;
+      Assert.equal(engine.toFetch, this.toFetch);
+
+      engine.toFetch = this.toFetch2;
+      Assert.equal(engine.toFetch, this.toFetch2);
+    },
+    check(engine) {
+      assertSetsEqual(engine.toFetch, this.toFetch2);
+    },
+  });
+
+  await testSteamEngineStorage({
+    toFetch: guidSetOfSize(2),
+    async beforeCheck() {
+      let toFetchPath = PathUtils.join(
+        PathUtils.profileDir,
+        "weave",
+        "toFetch",
+        "steam.json"
+      );
+      await IOUtils.writeJSON(toFetchPath, this.toFetch, {
+        tmpPath: toFetchPath + ".tmp",
+      });
+    },
+    check(engine) {
+      // Read file from disk
+      assertSetsEqual(engine.toFetch, this.toFetch);
+    },
+  });
+});
+
+add_task(async function test_previousFailed() {
+  _("SyncEngine.previousFailed corresponds to file on disk");
+  await SyncTestingInfrastructure(server);
+
+  await testSteamEngineStorage({
+    previousFailed: guidSetOfSize(3),
+    setup(engine) {
+      // Ensure pristine environment
+      Assert.equal(engine.previousFailed.size, 0);
+
+      // Write file to disk
+      engine.previousFailed = this.previousFailed;
+      Assert.equal(engine.previousFailed, this.previousFailed);
+    },
+    check(engine) {
+      // previousFailed is written asynchronously
+      assertSetsEqual(engine.previousFailed, this.previousFailed);
+    },
+  });
+
+  await testSteamEngineStorage({
+    previousFailed: guidSetOfSize(4),
+    previousFailed2: guidSetOfSize(5),
+    setup(engine) {
+      // Make sure it work for consecutive writes before the callback is executed.
+      engine.previousFailed = this.previousFailed;
+      Assert.equal(engine.previousFailed, this.previousFailed);
+
+      engine.previousFailed = this.previousFailed2;
+      Assert.equal(engine.previousFailed, this.previousFailed2);
+    },
+    check(engine) {
+      assertSetsEqual(engine.previousFailed, this.previousFailed2);
+    },
+  });
+
+  await testSteamEngineStorage({
+    previousFailed: guidSetOfSize(2),
+    async beforeCheck() {
+      let previousFailedPath = PathUtils.join(
+        PathUtils.profileDir,
+        "weave",
+        "failed",
+        "steam.json"
+      );
+      await IOUtils.writeJSON(previousFailedPath, this.previousFailed, {
+        tmpPath: previousFailedPath + ".tmp",
+      });
+    },
+    check(engine) {
+      // Read file from disk
+      assertSetsEqual(engine.previousFailed, this.previousFailed);
+    },
+  });
+});
+
+add_task(async function test_resetClient() {
+  _("SyncEngine.resetClient resets lastSync and toFetch");
+  await SyncTestingInfrastructure(server);
+  let engine = await makeSteamEngine();
+  try {
+    // Ensure pristine environment
+    Assert.equal(Svc.Prefs.get("steam.lastSync"), undefined);
+    Assert.equal(engine.toFetch.size, 0);
+
+    await engine.setLastSync(123.45);
+    engine.toFetch = guidSetOfSize(4);
+    engine.previousFailed = guidSetOfSize(3);
+
+    await engine.resetClient();
+    Assert.equal(await engine.getLastSync(), 0);
+    Assert.equal(engine.toFetch.size, 0);
+    Assert.equal(engine.previousFailed.size, 0);
+  } finally {
+    Svc.Prefs.resetBranch("");
+  }
+});
+
+add_task(async function test_wipeServer() {
+  _("SyncEngine.wipeServer deletes server data and resets the client.");
+  let engine = await makeSteamEngine();
+
+  const PAYLOAD = 42;
+  let steamCollection = new ServerWBO("steam", PAYLOAD);
+  let steamServer = httpd_setup({
+    "/1.1/foo/storage/steam": steamCollection.handler(),
+  });
+  await SyncTestingInfrastructure(steamServer);
+  do_test_pending();
+
+  try {
+    // Some data to reset.
+    await engine.setLastSync(123.45);
+    engine.toFetch = guidSetOfSize(3);
+
+    _("Wipe server data and reset client.");
+    await engine.wipeServer();
+    Assert.equal(steamCollection.payload, undefined);
+    Assert.equal(await engine.getLastSync(), 0);
+    Assert.equal(engine.toFetch.size, 0);
+  } finally {
+    steamServer.stop(do_test_finished);
+    Svc.Prefs.resetBranch("");
+  }
+});
+
+add_task(async function finish() {
+  await promiseStopServer(server);
+});