1 files changed, 71 insertions, 0 deletions
diff --git a/toolkit/crashreporter/test/unit/test_oom_annotation.js b/toolkit/crashreporter/test/unit/test_oom_annotation.js
new file mode 100644
index 0000000000..029497429a
--- /dev/null
+++ b/toolkit/crashreporter/test/unit/test_oom_annotation.js
@@ -0,0 +1,71 @@
+add_task(async function run_test() {
+  if (!("@mozilla.org/toolkit/crash-reporter;1" in Cc)) {
+    dump(
+      "INFO | test_crash_oom.js | Can't test crashreporter in a non-libxul build.\n"
+    );
+    return;
+  }
+
+  await do_content_crash(
+    function () {
+      crashType = CrashTestUtils.CRASH_OOM;
+      crashReporter.annotateCrashReport("TestKey", "Yes");
+    },
+    function (mdump, extra) {
+      const { AppConstants } = ChromeUtils.importESModule(
+        "resource://gre/modules/AppConstants.sys.mjs"
+      );
+      Assert.equal(extra.TestKey, "Yes");
+
+      // A list of pairs [annotation name, must be > 0]
+      let annotations;
+      switch (AppConstants.platform) {
+        case "win":
+          annotations = [
+            ["OOMAllocationSize", true],
+            ["SystemMemoryUsePercentage", false],
+            ["TotalVirtualMemory", true],
+            ["AvailableVirtualMemory", false],
+            ["TotalPageFile", false],
+            ["AvailablePageFile", false],
+            ["TotalPhysicalMemory", true],
+            ["AvailablePhysicalMemory", false],
+          ];
+          break;
+        case "linux":
+          annotations = [
+            ["OOMAllocationSize", true],
+            ["AvailablePageFile", false],
+            ["AvailablePhysicalMemory", false],
+            ["AvailableSwapMemory", false],
+            ["AvailableVirtualMemory", false],
+            ["TotalPageFile", false],
+            ["TotalPhysicalMemory", true],
+          ];
+          break;
+        case "macosx":
+          annotations = [
+            ["OOMAllocationSize", true],
+            ["AvailablePhysicalMemory", false],
+            ["AvailableSwapMemory", false],
+            ["PurgeablePhysicalMemory", false],
+            ["TotalPhysicalMemory", true],
+          ];
+          break;
+        default:
+          annotations = [];
+      }
+      for (let [label, shouldBeGreaterThanZero] of annotations) {
+        Assert.ok(label in extra, `Annotation ${label} is present`);
+
+        // All these annotations should represent non-negative numbers.
+        // A few of them (e.g. physical memory) are guaranteed to be positive.
+        if (shouldBeGreaterThanZero) {
+          Assert.ok(Number(extra[label]) > 0);
+        } else {
+          Assert.ok(Number(extra[label]) >= 0);
+        }
+      }
+    }
+  );
+});