1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/modules/module-this.js b/js/src/jit-test/tests/modules/module-this.js
new file mode 100644
index 0000000000..9721ef4d95
--- /dev/null
+++ b/js/src/jit-test/tests/modules/module-this.js
@@ -0,0 +1,25 @@
+// |jit-test| --enable-top-level-await;
+// Test 'this' is undefined in modules.
+
+function parseAndEvaluate(source) {
+    let m = parseModule(source);
+    m.declarationInstantiation();
+    return m.evaluation();
+}
+
+parseAndEvaluate("this")
+  .then(value => assertEq(typeof(value), "undefined"))
+  .catch(error => {
+    // We shouldn't throw in this case.
+    assertEq(false, true)
+  });
+
+let m = parseModule("export function getThis() { return this; }");
+m.declarationInstantiation();
+m.evaluation()
+  .then(() => {
+    let f = getModuleEnvironmentValue(m, "getThis");
+    assertEq(typeof(f()), "undefined");
+  });
+
+drainJobQueue();