Bug 792108 - Add more truthiness tests to ensure strict equality isn't affected by JSCLASS_EMULATES_UNDEFINED, and that falsy objects don't compare equal unless they're actually the same object. Just tests, they pass locally for me with the --tbpl driver option to do what Tinderbox does, r=sparky

js/src/jit-test/tests/truthiness/if-strict-equal-null.js

@@ -0,0 +1,46 @@
+var counterF = 0;
+
+function f(v, value)
+{
+  if (v === null)
+    counterF++;
+  assertEq(counterF, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, 0);
+f({}, 0);
+f(null, 1);
+f(null, 2);
+f(undefined, 2);
+f(undefined, 2);
+f(objectEmulatingUndefined(), 2);
+f(objectEmulatingUndefined(), 2);
+f(Object.prototype, 2);
+f(Object.prototype, 2);
+
+var counterG = 0;
+
+function g(v, value)
+{
+  if (v === null)
+    counterG++;
+  assertEq(counterG, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, 0);
+g({}, 0);
+
+var counterH = 0;
+
+function h(v, value)
+{
+  if (v === null)
+    counterH++;
+  assertEq(counterH, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), 0);
+h(objectEmulatingUndefined(), 0);

js/src/jit-test/tests/truthiness/if-strict-equal-undefined.js

@@ -0,0 +1,46 @@
+var counterF = 0;
+
+function f(v, value)
+{
+  if (v === undefined)
+    counterF++;
+  assertEq(counterF, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, 0);
+f({}, 0);
+f(null, 0);
+f(null, 0);
+f(undefined, 1);
+f(undefined, 2);
+f(objectEmulatingUndefined(), 2);
+f(objectEmulatingUndefined(), 2);
+f(Object.prototype, 2);
+f(Object.prototype, 2);
+
+var counterG = 0;
+
+function g(v, value)
+{
+  if (v === undefined)
+    counterG++;
+  assertEq(counterG, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, 0);
+g({}, 0);
+
+var counterH = 0;
+
+function h(v, value)
+{
+  if (v === undefined)
+    counterH++;
+  assertEq(counterH, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), 0);
+h(objectEmulatingUndefined(), 0);

js/src/jit-test/tests/truthiness/if-strict-not-equal-null.js

@@ -0,0 +1,46 @@
+var counterF = 0;
+
+function f(v, value)
+{
+  if (v !== null)
+    counterF++;
+  assertEq(counterF, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, 1);
+f({}, 2);
+f(null, 2);
+f(null, 2);
+f(undefined, 3);
+f(undefined, 4);
+f(objectEmulatingUndefined(), 5);
+f(objectEmulatingUndefined(), 6);
+f(Object.prototype, 7);
+f(Object.prototype, 8);
+
+var counterG = 0;
+
+function g(v, value)
+{
+  if (v !== null)
+    counterG++;
+  assertEq(counterG, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, 1);
+g({}, 2);
+
+var counterH = 0;
+
+function h(v, value)
+{
+  if (v !== null)
+    counterH++;
+  assertEq(counterH, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), 1);
+h(objectEmulatingUndefined(), 2);

js/src/jit-test/tests/truthiness/if-strict-not-equal-undefined.js

@@ -0,0 +1,46 @@
+var counterF = 0;
+
+function f(v, value)
+{
+  if (v !== undefined)
+    counterF++;
+  assertEq(counterF, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, 1);
+f({}, 2);
+f(null, 3);
+f(null, 4);
+f(undefined, 4);
+f(undefined, 4);
+f(objectEmulatingUndefined(), 5);
+f(objectEmulatingUndefined(), 6);
+f(Object.prototype, 7);
+f(Object.prototype, 8);
+
+var counterG = 0;
+
+function g(v, value)
+{
+  if (v !== undefined)
+    counterG++;
+  assertEq(counterG, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, 1);
+g({}, 2);
+
+var counterH = 0;
+
+function h(v, value)
+{
+  if (v !== undefined)
+    counterH++;
+  assertEq(counterH, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), 1);
+h(objectEmulatingUndefined(), 2);

js/src/jit-test/tests/truthiness/obj-obj-equal.js

@@ -0,0 +1,23 @@
+function f(v1, v2, value)
+{
+  var b = v1 == v2;
+  assertEq(b, value,
+           "failed: " + v1 + ", " + v2 + ": " + value);
+}
+
+var obj = {};
+var emul = objectEmulatingUndefined();
+
+f(obj, obj, true);
+f(obj, obj, true);
+f(emul, obj, false);
+f(emul, obj, false);
+f(obj, emul, false);
+f(obj, emul, false);
+f(Object.prototype, obj, false);
+f(Object.prototype, obj, false);
+f(emul, emul, true);
+f(objectEmulatingUndefined(), emul, false);
+f(objectEmulatingUndefined(), emul, false);
+f(emul, objectEmulatingUndefined(), false);
+f(emul, objectEmulatingUndefined(), false);

js/src/jit-test/tests/truthiness/obj-obj-not-equal.js

@@ -0,0 +1,23 @@
+function f(v1, v2, value)
+{
+  var b = v1 != v2;
+  assertEq(b, value,
+           "failed: " + v1 + ", " + v2 + ": " + value);
+}
+
+var obj = {};
+var emul = objectEmulatingUndefined();
+
+f(obj, obj, false);
+f(obj, obj, false);
+f(emul, obj, true);
+f(emul, obj, true);
+f(obj, emul, true);
+f(obj, emul, true);
+f(Object.prototype, obj, true);
+f(Object.prototype, obj, true);
+f(emul, emul, false);
+f(objectEmulatingUndefined(), emul, true);
+f(objectEmulatingUndefined(), emul, true);
+f(emul, objectEmulatingUndefined(), true);
+f(emul, objectEmulatingUndefined(), true);

js/src/jit-test/tests/truthiness/strict-equal-null.js

@@ -0,0 +1,37 @@
+function f(v, value)
+{
+  var b = v === null;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, false);
+f({}, false);
+f(null, true);
+f(null, true);
+f(undefined, false);
+f(undefined, false);
+f(objectEmulatingUndefined(), false);
+f(objectEmulatingUndefined(), false);
+f(Object.prototype, false);
+f(Object.prototype, false);
+
+function g(v, value)
+{
+  var b = v === null;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, false);
+g({}, false);
+
+function h(v, value)
+{
+  var b = v === null;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), false);
+h(objectEmulatingUndefined(), false);

js/src/jit-test/tests/truthiness/strict-equal-undefined.js

@@ -0,0 +1,37 @@
+function f(v, value)
+{
+  var b = v === undefined;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, false);
+f({}, false);
+f(null, false);
+f(null, false);
+f(undefined, true);
+f(undefined, true);
+f(objectEmulatingUndefined(), false);
+f(objectEmulatingUndefined(), false);
+f(Object.prototype, false);
+f(Object.prototype, false);
+
+function g(v, value)
+{
+  var b = v === undefined;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, false);
+g({}, false);
+
+function h(v, value)
+{
+  var b = v === undefined;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), false);
+h(objectEmulatingUndefined(), false);

js/src/jit-test/tests/truthiness/strict-not-equal-null.js

@@ -0,0 +1,37 @@
+function f(v, value)
+{
+  var b = v !== null;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, true);
+f({}, true);
+f(null, false);
+f(null, false);
+f(undefined, true);
+f(undefined, true);
+f(objectEmulatingUndefined(), true);
+f(objectEmulatingUndefined(), true);
+f(Object.prototype, true);
+f(Object.prototype, true);
+
+function g(v, value)
+{
+  var b = v !== null;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, true);
+g({}, true);
+
+function h(v, value)
+{
+  var b = v !== null;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), true);
+h(objectEmulatingUndefined(), true);

js/src/jit-test/tests/truthiness/strict-not-equal-undefined.js

@@ -0,0 +1,37 @@
+function f(v, value)
+{
+  var b = v !== undefined;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+f({}, true);
+f({}, true);
+f(null, true);
+f(null, true);
+f(undefined, false);
+f(undefined, false);
+f(objectEmulatingUndefined(), true);
+f(objectEmulatingUndefined(), true);
+f(Object.prototype, true);
+f(Object.prototype, true);
+
+function g(v, value)
+{
+  var b = v !== undefined;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+g({}, true);
+g({}, true);
+
+function h(v, value)
+{
+  var b = v !== undefined;
+  assertEq(b, value,
+           "failed: " + v + " " + value);
+}
+
+h(objectEmulatingUndefined(), true);
+h(objectEmulatingUndefined(), true);