1 files changed, 134 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/keys-testing.js b/js/src/jit-test/tests/basic/keys-testing.js
new file mode 100644
index 0000000000..d02ac7be5d
--- /dev/null
+++ b/js/src/jit-test/tests/basic/keys-testing.js
@@ -0,0 +1,134 @@
+function f(o) {
+    return Object.keys(o)
+}
+
+po = {
+    failure: 'hello'
+}
+
+o = {about: 5,
+    ballisitic: 6,
+    cakebread: 8,
+    dalespeople: 9,
+    evilproof: 20,
+    fairgoing: 30,
+    gargoylish: 2,
+    harmonici: 1,
+    jinniwink: 12,
+    kaleidoscopical: 2,
+    labellum: 1,
+    macadamization: 4,
+    neutrino: 1,
+    observership: 0,
+    quadratomandibular: 9,
+    rachicentesis: 1,
+    saltcat: 0,
+    trousseau: 1,
+    view: 10,
+    wheelbox: 2,
+    xerography: 1,
+    yez: 3,
+}
+Object.setPrototypeOf(o, po);
+
+// Initialize for-in cache for o.
+for (var prop in o) {
+    print(prop)
+}
+
+function test(o) {
+    for (var i = 0; i<10; i++) {
+        res = f(o);
+        assertEq(false, res.includes("failure") );
+        // assertEq(true, res.includes("1") );
+    }
+}
+
+// Verify things.
+test(o)
+
+
+po[2] = "hi";
+test(o);
+
+po[3] = "bye";
+for (var prop in o) {
+    assertEq(prop == "gnome", false);
+}
+test(o);
+
+
+o2 = {about: 5,
+    ballisitic: 6,
+    cakebread: 8,
+    dalespeople: 9,
+    evilproof: 20,
+    fairgoing: 30,
+    gargoylish: 2,
+    harmonici: 1,
+    jinniwink: 12,
+    kaleidoscopical: 2,
+    labellum: 1,
+    macadamization: 4,
+    neutrino: 1,
+    observership: 0,
+    quadratomandibular: 9,
+    rachicentesis: 1,
+    saltcat: 0,
+    trousseau: 1,
+    view: 10,
+    wheelbox: 2,
+    xerography: 1,
+    yez: 3,
+    "1": 10,
+}
+
+// Initialize for-in cache for o.
+for (var prop in o2) {
+    if (prop == "abra") print(prop);
+}
+
+// Verify things.
+test(o2)
+
+
+for (var i = 0; i < 20; i++) {
+    assertEq(Object.keys(o2).includes("1"), true);
+}
+
+let o3 = {about: 5,
+    ballisitic: 6,
+    cakebread: 8,
+    dalespeople: 9,
+    evilproof: 20,
+    fairgoing: 30,
+    gargoylish: 2,
+    harmonici: 1,
+    jinniwink: 12,
+    kaleidoscopical: 2,
+    labellum: 1,
+    macadamization: 4,
+    neutrino: 1,
+    observership: 0,
+    quadratomandibular: 9,
+    rachicentesis: 1,
+    saltcat: 0,
+    trousseau: 1,
+    view: 10,
+    wheelbox: 2,
+    xerography: 1,
+    yez: 3,
+}
+
+// Initialize for-in cache for o.
+for (var prop in o2) {
+    if (prop == "abra") print(prop);
+}
+
+// Verify things.
+test(o3)
+
+
+for (var i = 0; i < 20; i++) {
+    assertEq(Object.keys(o3).includes("yez"), true);
+}