1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Class/bytecodePatternMatching.js b/js/src/tests/ecma_6/Class/bytecodePatternMatching.js
new file mode 100644
index 000000000..446184f80
--- /dev/null
+++ b/js/src/tests/ecma_6/Class/bytecodePatternMatching.js
@@ -0,0 +1,29 @@
+// Constructors can't be called so we can't pattern match
+// them in replace and sort.
+function a() {
+    var b = {a: "A"};
+
+    class X {
+        constructor(a) {
+            return b[a]
+        }
+    };
+
+    assertThrowsInstanceOf(() => "a".replace(/a/, X), TypeError);
+}
+
+function b() {
+    class X {
+        constructor(x, y) {
+            return x - y;
+        }
+    }
+
+    assertThrowsInstanceOf(() => [1, 2, 3].sort(X), TypeError);
+}
+
+a();
+b();
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0, "OK");