mozilla-central/toolkit/components/nimbus/test/browser/browser_experimentstore_load.js (file symbol)

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/* Any copyright is dedicated to the Public Domain.
"use strict";
const { ExperimentStore } = ChromeUtils.importESModule(
"resource://nimbus/lib/ExperimentStore.sys.mjs"
);
const { ExperimentFakes } = ChromeUtils.importESModule(
);
const { ExperimentFeatures } = ChromeUtils.importESModule(
"resource://nimbus/ExperimentAPI.sys.mjs"
);
ChromeUtils.defineESModuleGetters(this, {
JSONFile: "resource://gre/modules/JSONFile.sys.mjs",
});
function getPath() {
const profileDir = Services.dirsvc.get("ProfD", Ci.nsIFile).path;
// NOTE: If this test is failing because you have updated this path in `ExperimentStore`,
// users will lose their old experiment data. You should do something to migrate that data.
return PathUtils.join(profileDir, "ExperimentStoreData.json");
}
// Ensure that data persisted to disk is succesfully loaded by the store.
// We write data to the expected location in the user profile and
// instantiate an ExperimentStore that should then see the value.
add_task(async function test_loadFromFile() {
const previousSession = new JSONFile({ path: getPath() });
await previousSession.load();
previousSession.data.test = {
slug: "test",
active: true,
lastSeen: Date.now(),
};
previousSession.saveSoon();
await previousSession.finalize();
// Create a store and expect to load data from previous session
const store = new ExperimentStore();
await store.init();
await store.ready();
Assert.equal(
previousSession.path,
store._store.path,
"Should have the same path"
);
Assert.ok(
store.get("test"),
"This should pass if the correct store path loaded successfully"
);
});
add_task(async function test_load_from_disk_event() {
const experiment = ExperimentFakes.experiment("foo", {
branch: {
slug: "variant",
features: [{ featureId: "green" }],
},
lastSeen: Date.now(),
});
const stub = sinon.stub();
const previousSession = new JSONFile({ path: getPath() });
await previousSession.load();
previousSession.data.foo = experiment;
previousSession.saveSoon();
await previousSession.finalize();
// Create a store and expect to load data from previous session
const store = new ExperimentStore();
store._onFeatureUpdate("green", stub);
await store.init();
await store.ready();
Assert.equal(
previousSession.path,
store._store.path,
"Should have the same path as previousSession."
);
await TestUtils.waitForCondition(() => stub.called, "Stub was called");
Assert.ok(stub.firstCall.args[1], "feature-experiment-loaded");
});