1 files changed, 49 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Object-isSameNative.js b/js/src/jit-test/tests/debug/Object-isSameNative.js
new file mode 100644
index 0000000000..0b26144f21
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Object-isSameNative.js
@@ -0,0 +1,49 @@
+// Test that the onNativeCall hook is called when expected.
+
+load(libdir + 'eqArrayHelper.js');
+
+var g = newGlobal({newCompartment: true});
+var dbg = Debugger(g);
+var gdbg = dbg.addDebuggee(g);
+
+assertEq(gdbg.getProperty("print").return.isSameNative(print), true);
+assertEq(gdbg.getProperty("print").return.isSameNative(newGlobal), false);
+
+g.eval(`
+const x = [];
+Object.defineProperty(x, "a", {
+  get: print,
+  set: print,
+});
+function f() {
+  x.a++;
+  x.length = 0;
+  x.push(4, 5, 6);
+  x.sort(print);
+}
+`);
+
+const comparisons = [
+  print,
+  Array.prototype.push,
+  Array.prototype.sort, // Note: self-hosted
+  newGlobal
+];
+
+const rv = [];
+dbg.onNativeCall = (callee, reason) => {
+  for (const fn of comparisons) {
+    if (callee.isSameNative(fn)) {
+      rv.push(fn.name);
+    }
+  }
+}
+
+for (let i = 0; i < 5; i++) {
+  rv.length = 0;
+  gdbg.executeInGlobal(`f()`);
+  assertEqArray(rv, [
+    "print", "print", "push",
+    "sort", "print", "print",
+  ]);
+}