1 files changed, 93 insertions, 0 deletions
diff --git a/js/src/tests/non262/object/values-entries-lazy-props.js b/js/src/tests/non262/object/values-entries-lazy-props.js
new file mode 100644
index 0000000000..0631c048af
--- /dev/null
+++ b/js/src/tests/non262/object/values-entries-lazy-props.js
@@ -0,0 +1,93 @@
+// Return new objects for each test case.
+function makeTestCases() {
+    // Call the resolve hook for arguments/string objects.
+    const resolveIndex = object => 0 in object;
+
+    // Calls the resolve hook for functions.
+    const resolveFunction = object => "length" in object;
+
+    const expected = array => ({
+        keys: Object.keys(array),
+        values: Object.values(array),
+        entries: Object.entries(array),
+    });
+
+    return [
+        // Mapped arguments objects.
+        {
+            object: function(){ return arguments; }(),
+            resolve: resolveIndex,
+            ...expected([]),
+        },
+        {
+            object: function(x){ return arguments; }(1),
+            resolve: resolveIndex,
+            ...expected([1]),
+        },
+        {
+            object: function(x, y, z){ return arguments; }(1, 2, 3),
+            resolve: resolveIndex,
+            ...expected([1, 2, 3]),
+        },
+
+        // Unmapped arguments objects.
+        {
+            object: function(){ "use strict"; return arguments; }(),
+            resolve: resolveIndex,
+            ...expected([]),
+        },
+        {
+            object: function(x){ "use strict"; return arguments; }(1),
+            resolve: resolveIndex,
+            ...expected([1]),
+        },
+        {
+            object: function(x, y, z){ "use strict"; return arguments; }(1, 2, 3),
+            resolve: resolveIndex,
+            ...expected([1, 2, 3]),
+        },
+
+        // String objects.
+        { object: new String(""), resolve: resolveIndex, ...expected([]), },
+        { object: new String("a"), resolve: resolveIndex, ...expected(["a"]), },
+        { object: new String("abc"), resolve: resolveIndex, ...expected(["a","b","c"]), },
+
+        // Function objects.
+        { object: function(){}, resolve: resolveFunction, ...expected([]), },
+    ];
+}
+
+var assertWith = {
+    keys: assertEqArray,
+    values: assertEqArray,
+    entries(actual, expected) {
+        assertEq(actual.length, expected.length);
+        for (let i = 0; i < expected.length; ++i)
+            assertEqArray(actual[i], expected[i]);
+    }
+};
+
+// Test Object.keys/values/entries on objects with enumerate/resolve hooks.
+
+for (let method of ["keys", "values", "entries"]) {
+    let assert = assertWith[method];
+
+    // Call each method twice to test the case when
+    // - the enumerate hook wasn't yet called,
+    // - the enumerate hook was already called.
+    for (let {object, [method]: expected} of makeTestCases()) {
+        assert(Object[method](object), expected);
+        assert(Object[method](object), expected);
+    }
+
+    // Test the case when enumerate wasn't yet called, but a property was already resolved.
+    for (let {object, resolve, [method]: expected} of makeTestCases()) {
+        resolve(object); // Call the resolve hook.
+
+        assert(Object[method](object), expected);
+        assert(Object[method](object), expected);
+    }
+}
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);