1 files changed, 58 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/has-sparse.js b/js/src/jit-test/tests/cacheir/has-sparse.js
new file mode 100644
index 0000000000..2b3b2c8451
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/has-sparse.js
@@ -0,0 +1,58 @@
+function sparse() {
+    var o = {0: 0, 0x10000: 0};
+
+    var tests = [[1, false], [0, true], [-2, false], [0x10000, true], [0x20000, false]];
+    for (var [key, has] of tests) {
+        assertEq(key in o, has);
+        assertEq(o.hasOwnProperty(key), has);
+    }
+}
+
+function typedArray() {
+    var o = {0: 0, 0x10000: 0};
+    var t = new Int32Array(0x10001)
+
+    // Only use Int32Array after we attached the sparse stub
+    //                in o,  in t
+    var tests = [[1, [false, true]],
+                 [0, [true, true]],
+                 [-2, [false, false]],
+                 [0x10000, [true, true]],
+                 [0x20000, [false, false]]];
+
+    for (var i = 0; i < 10; i++) {
+        for (var [key, has] of tests) {
+            assertEq(key in o, has[i > 5 ? 1 : 0]);
+            assertEq(o.hasOwnProperty(key), has[i > 5 ? 1 : 0]);
+        }
+
+        if (i == 5)
+            o = t;
+    }
+}
+
+function protoChange() {
+    var o = {0: 0, 0x10000: 0};
+
+    var tests = [[1, [false, true]],
+                 [0, [true, true]],
+                 [-2, [false, false]],
+                 [0x10000, [true, true]],
+                 [0x20000, [false, false]]];
+
+    for (var i = 0; i < 10; i++) {
+        for (var [key, has] of tests) {
+            assertEq(key in o, has[i > 5 ? 1 : 0]);
+            // Proto change doesn't affect hasOwnProperty.
+            assertEq(o.hasOwnProperty(key), has[0]);
+        }
+
+        if (i == 5)
+            o.__proto__ = [1, 1, 1, 1];
+    }
+}
+
+sparse();
+typedArray();
+protoChange();
+