1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/onEnterFrame-generator-resumption-01.js b/js/src/jit-test/tests/debug/onEnterFrame-generator-resumption-01.js
new file mode 100644
index 0000000000..e768b91777
--- /dev/null
+++ b/js/src/jit-test/tests/debug/onEnterFrame-generator-resumption-01.js
@@ -0,0 +1,36 @@
+// A debugger can {throw:} from onEnterFrame at any resume point in a generator.
+// It closes the generator.
+
+load(libdir + "asserts.js");
+
+let g = newGlobal({newCompartment: true});
+g.eval(`
+    function* f() { yield 1; }
+    var exn = new TypeError("object too hairy");
+`);
+
+let dbg = new Debugger;
+let gw = dbg.addDebuggee(g);
+
+// Repeat the test for each onEnterFrame event.
+// It fires up to three times:
+// - when the generator g.f is called;
+// - when we enter it to run to `yield 1`;
+// - when we resume after the yield to run to the end.
+for (let i = 0; i < 3; i++) {
+    let hits = 0;
+    dbg.onEnterFrame = frame => {
+        return hits++ < i ? undefined : {throw: gw.makeDebuggeeValue(g.exn)};
+    };
+    let genObj;
+    assertThrowsValue(
+        () => {
+            genObj = g.f();
+            for (let x of genObj) {}
+        },
+        g.exn
+    );
+    assertEq(hits, i + 1);
+    if (hits > 1)
+        assertEq(genObj.next().done, true);
+}