1 files changed, 48 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_FrameScriptEnvironment.js b/js/xpconnect/tests/unit/test_FrameScriptEnvironment.js
new file mode 100644
index 0000000000..289a594a37
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_FrameScriptEnvironment.js
@@ -0,0 +1,48 @@
+const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
+
+let ppmm = Services.ppmm.getChildAt(0);
+
+Services.prefs.setBoolPref("security.allow_eval_with_system_principal", true);
+registerCleanupFunction(() => {
+  Services.prefs.clearUserPref("security.allow_eval_with_system_principal");
+});
+
+add_task(async function test_bindings() {
+    let {strict, bound} = await new Promise(function(resolve) {
+        // Use a listener to get results from child
+        ppmm.addMessageListener("results", function listener(msg) {
+            ppmm.removeMessageListener("results", listener);
+            resolve(msg.data);
+        });
+
+        // Bind vars in first process script
+        ppmm.loadProcessScript("resource://test/environment_script.js", false);
+
+        // Check visibility in second process script
+        ppmm.loadProcessScript(`data:,
+            let strict = (function() { return this; })() === undefined;
+            var bound = "";
+
+            try { void vu; bound += "vu,"; } catch (e) {}
+            try { void vq; bound += "vq,"; } catch (e) {}
+            try { void vl; bound += "vl,"; } catch (e) {}
+            try { void gt; bound += "gt,"; } catch (e) {}
+            try { void ed; bound += "ed,"; } catch (e) {}
+            try { void ei; bound += "ei,"; } catch (e) {}
+            try { void fo; bound += "fo,"; } catch (e) {}
+            try { void fi; bound += "fi,"; } catch (e) {}
+            try { void fd; bound += "fd,"; } catch (e) {}
+
+            sendAsyncMessage("results", { strict, bound });
+            `, false);
+    });
+
+    // FrameScript loader should share |this| access
+    if (strict) {
+        if (bound != "gt,ed,ei,fo,")
+            throw new Error("Unexpected global binding set - " + bound);
+    } else {
+        if (bound != "gt,ed,ei,fo,fi,fd,")
+            throw new Error("Unexpected global binding set - " + bound);
+    }
+});