1 files changed, 157 insertions, 0 deletions
diff --git a/toolkit/components/glean/tests/xpcshell/test_GleanIPC.js b/toolkit/components/glean/tests/xpcshell/test_GleanIPC.js
new file mode 100644
index 0000000000..95d14cfa27
--- /dev/null
+++ b/toolkit/components/glean/tests/xpcshell/test_GleanIPC.js
@@ -0,0 +1,157 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { AppConstants } = ChromeUtils.importESModule(
+  "resource://gre/modules/AppConstants.sys.mjs"
+);
+const { setTimeout } = ChromeUtils.importESModule(
+  "resource://gre/modules/Timer.sys.mjs"
+);
+
+function sleep(ms) {
+  /* eslint-disable mozilla/no-arbitrary-setTimeout */
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+add_setup(
+  /* on Android FOG is set up through head.js */
+  { skip_if: () => !runningInParent || AppConstants.platform == "android" },
+  function test_setup() {
+    // Give FOG a temp profile to init within.
+    do_get_profile();
+
+    // We need to initialize it once, otherwise operations will be stuck in the pre-init queue.
+    Services.fog.initializeFOG();
+  }
+);
+
+const BAD_CODE_COUNT = 42;
+const CHEESY_STRING = "a very cheesy string!";
+const CHEESIER_STRING = "a much cheesier string!";
+const EVENT_EXTRA = { extra1: "so very extra" };
+const MEMORIES = [13, 31];
+const MEMORY_BUCKETS = ["13509772", "32131834"]; // buckets are strings : |
+const COUNTERS_NEAR_THE_SINK = 3;
+const COUNTERS_WITH_JUNK_ON_THEM = 5;
+const INVALID_COUNTERS = 7;
+
+add_task({ skip_if: () => runningInParent }, async function run_child_stuff() {
+  Glean.testOnly.badCode.add(BAD_CODE_COUNT);
+  Glean.testOnly.cheesyStringList.add(CHEESY_STRING);
+  Glean.testOnly.cheesyStringList.add(CHEESIER_STRING);
+
+  Glean.testOnlyIpc.noExtraEvent.record();
+  Glean.testOnlyIpc.anEvent.record(EVENT_EXTRA);
+
+  for (let memory of MEMORIES) {
+    Glean.testOnly.doYouRemember.accumulate(memory);
+  }
+
+  let t1 = Glean.testOnly.whatTimeIsIt.start();
+  let t2 = Glean.testOnly.whatTimeIsIt.start();
+
+  await sleep(5);
+
+  let t3 = Glean.testOnly.whatTimeIsIt.start();
+  Glean.testOnly.whatTimeIsIt.cancel(t1);
+
+  await sleep(5);
+
+  Glean.testOnly.whatTimeIsIt.stopAndAccumulate(t2); // 10ms
+  Glean.testOnly.whatTimeIsIt.stopAndAccumulate(t3); // 5ms
+
+  Glean.testOnlyIpc.aCustomDist.accumulateSamples([3, 4]);
+
+  Glean.testOnly.mabelsKitchenCounters.near_the_sink.add(
+    COUNTERS_NEAR_THE_SINK
+  );
+  Glean.testOnly.mabelsKitchenCounters.with_junk_on_them.add(
+    COUNTERS_WITH_JUNK_ON_THEM
+  );
+
+  Glean.testOnly.mabelsBathroomCounters["1".repeat(72)].add(INVALID_COUNTERS);
+
+  Glean.testOnlyIpc.irate.addToNumerator(44);
+  Glean.testOnlyIpc.irate.addToDenominator(14);
+});
+
+add_task(
+  { skip_if: () => !runningInParent },
+  async function test_child_metrics() {
+    await run_test_in_child("test_GleanIPC.js");
+    await Services.fog.testFlushAllChildren();
+
+    Assert.equal(Glean.testOnly.badCode.testGetValue(), BAD_CODE_COUNT);
+
+    // Note: this will break if string list ever rearranges its items.
+    const cheesyStrings = Glean.testOnly.cheesyStringList.testGetValue();
+    Assert.deepEqual(cheesyStrings, [CHEESY_STRING, CHEESIER_STRING]);
+
+    const data = Glean.testOnly.doYouRemember.testGetValue();
+    Assert.equal(MEMORIES.reduce((a, b) => a + b, 0) * 1024 * 1024, data.sum);
+    for (let [bucket, count] of Object.entries(data.values)) {
+      // We could assert instead, but let's skip to save the logspam.
+      if (count == 0) {
+        continue;
+      }
+      Assert.ok(count == 1 && MEMORY_BUCKETS.includes(bucket));
+    }
+
+    const customData = Glean.testOnlyIpc.aCustomDist.testGetValue("store1");
+    Assert.equal(3 + 4, customData.sum, "Sum's correct");
+    for (let [bucket, count] of Object.entries(customData.values)) {
+      Assert.ok(
+        count == 0 || (count == 2 && bucket == 1), // both values in the low bucket
+        `Only two buckets have a sample ${bucket} ${count}`
+      );
+    }
+
+    var events = Glean.testOnlyIpc.noExtraEvent.testGetValue();
+    Assert.equal(1, events.length);
+    Assert.equal("test_only.ipc", events[0].category);
+    Assert.equal("no_extra_event", events[0].name);
+
+    events = Glean.testOnlyIpc.anEvent.testGetValue();
+    Assert.equal(1, events.length);
+    Assert.equal("test_only.ipc", events[0].category);
+    Assert.equal("an_event", events[0].name);
+    Assert.deepEqual(EVENT_EXTRA, events[0].extra);
+
+    const NANOS_IN_MILLIS = 1e6;
+    const EPSILON = 40000; // bug 1701949
+    const times = Glean.testOnly.whatTimeIsIt.testGetValue();
+    Assert.greater(times.sum, 15 * NANOS_IN_MILLIS - EPSILON);
+    // We can't guarantee any specific time values (thank you clocks),
+    // but we can assert there are only two samples.
+    Assert.equal(
+      2,
+      Object.entries(times.values).reduce(
+        (acc, [bucket, count]) => acc + count,
+        0
+      )
+    );
+
+    const mabelsCounters = Glean.testOnly.mabelsKitchenCounters;
+    Assert.equal(
+      mabelsCounters.near_the_sink.testGetValue(),
+      COUNTERS_NEAR_THE_SINK
+    );
+    Assert.equal(
+      mabelsCounters.with_junk_on_them.testGetValue(),
+      COUNTERS_WITH_JUNK_ON_THEM
+    );
+
+    Assert.throws(
+      () => Glean.testOnly.mabelsBathroomCounters.__other__.testGetValue(),
+      /NS_ERROR_LOSS_OF_SIGNIFICANT_DATA/,
+      "Invalid labels record errors, which throw"
+    );
+
+    Assert.deepEqual(
+      { numerator: 44, denominator: 14 },
+      Glean.testOnlyIpc.irate.testGetValue()
+    );
+  }
+);