1 files changed, 124 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/sync_and_async_in_worker.js b/js/xpconnect/tests/unit/sync_and_async_in_worker.js
new file mode 100644
index 0000000000..e21c5cca67
--- /dev/null
+++ b/js/xpconnect/tests/unit/sync_and_async_in_worker.js
@@ -0,0 +1,124 @@
+onmessage = async event => {
+  if (event.data.order === "test") {
+    globalThis["loaded"] = [];
+    const ns = await import("resource://test/non_shared_1.mjs");
+    postMessage({});
+    return;
+  }
+
+  if (event.data.order === "sync-before-async") {
+    globalThis["loaded"] = [];
+    const ns = ChromeUtils.importESModule("resource://test/non_shared_1.mjs", {
+      global: "current",
+    });
+
+    const sync_beforeInc = ns.getCounter();
+    ns.incCounter();
+    const sync_afterInc = ns.getCounter();
+
+    const loaded1 = globalThis["loaded"].join(",");
+
+    let nsPromise;
+    if (event.data.target === "top-level") {
+      nsPromise = import("resource://test/non_shared_1.mjs");
+    } else {
+      nsPromise = import("resource://test/import_non_shared_1.mjs");
+    }
+
+    const ns2 = await nsPromise;
+
+    const async_beforeInc = ns2.getCounter();
+    ns2.incCounter();
+    const async_afterInc = ns2.getCounter();
+    const sync_afterIncInc = ns.getCounter();
+
+    const loaded2 = globalThis["loaded"].join(",");
+
+    postMessage({
+      sync_beforeInc,
+      sync_afterInc,
+      sync_afterIncInc,
+      async_beforeInc,
+      async_afterInc,
+      loaded1,
+      loaded2,
+    });
+    return;
+  }
+
+  if (event.data.order === "sync-after-async") {
+    globalThis["loaded"] = [];
+    const ns = await import("resource://test/non_shared_1.mjs");
+
+    const async_beforeInc = ns.getCounter();
+    ns.incCounter();
+    const async_afterInc = ns.getCounter();
+
+    const loaded1 = globalThis["loaded"].join(",");
+
+    let ns2;
+    if (event.data.target === "top-level") {
+      ns2 = ChromeUtils.importESModule("resource://test/non_shared_1.mjs", {
+        global: "current",
+      });
+    } else {
+      ns2 = ChromeUtils.importESModule("resource://test/import_non_shared_1.mjs", {
+        global: "current",
+      });
+    }
+
+    const sync_beforeInc = ns2.getCounter();
+    ns2.incCounter();
+    const sync_afterInc = ns2.getCounter();
+    const async_afterIncInc = ns.getCounter();
+
+    const loaded2 = globalThis["loaded"].join(",");
+
+    postMessage({
+      sync_beforeInc,
+      sync_afterInc,
+      async_beforeInc,
+      async_afterInc,
+      async_afterIncInc,
+      loaded1,
+      loaded2,
+    });
+    return;
+  }
+
+  if (event.data.order === "sync-while-async") {
+    globalThis["loaded"] = [];
+    const nsPromise = import("resource://test/non_shared_1.mjs");
+
+    let errorMessage = "";
+    try {
+      if (event.data.target === "top-level") {
+        ChromeUtils.importESModule("resource://test/non_shared_1.mjs", {
+          global: "current",
+        });
+      } else {
+        ChromeUtils.importESModule("resource://test/import_non_shared_1.mjs", {
+          global: "current",
+        });
+      }
+    } catch (e) {
+      errorMessage = e.message;
+    }
+
+    const ns = await nsPromise;
+
+    const async_beforeInc = ns.getCounter();
+    ns.incCounter();
+    const async_afterInc = ns.getCounter();
+
+    const loaded = globalThis["loaded"].join(",");
+
+    postMessage({
+      sync_error: errorMessage,
+      async_beforeInc,
+      async_afterInc,
+      loaded,
+    });
+    return;
+  }
+};