From 637919bc72712125b34ebd9325e063cb7a03d7b7 Mon Sep 17 00:00:00 2001
From: Sami Vaarala <sami.vaarala@iki.fi>
Date: Mon, 3 Jul 2017 03:07:49 +0300
Subject: [PATCH] Testcase for + operator coercion order

---
 .../test-expr-add-coercion-order.js           | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 tests/ecmascript/test-expr-add-coercion-order.js

diff --git a/tests/ecmascript/test-expr-add-coercion-order.js b/tests/ecmascript/test-expr-add-coercion-order.js
new file mode 100644
index 00000000..b277b16a
--- /dev/null
+++ b/tests/ecmascript/test-expr-add-coercion-order.js
@@ -0,0 +1,37 @@
+/*===
+o1 valueOf
+o2 valueOf
+foobar
+o2 valueOf
+o1 valueOf
+barfoo
+o1 valueOf
+o2 valueOf
+o3 valueOf
+foobarquux
+===*/
+
+function test() {
+    var o1 = {
+        toString: function () { print('o1 toString'); return 'FOO' },
+        valueOf: function () { print('o1 valueOf'); return 'foo' },
+    };
+    var o2 = {
+        toString: function () { print('o2 toString'); return 'BAR' },
+        valueOf: function () { print('o2 valueOf'); return 'bar' },
+    };
+    var o3 = {
+        toString: function () { print('o3 toString'); return 'QUUX' },
+        valueOf: function () { print('o3 valueOf'); return 'quux' },
+    };
+
+    print(o1 + o2);
+    print(o2 + o1);
+    print(o1 + o2 + o3);
+}
+
+try {
+    test();
+} catch (e) {
+    print(e.stack || e);
+}