1 files changed, 95 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A2_T4.js b/js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A2_T4.js
new file mode 100644
index 0000000000..a7b77ba974
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/join/S15.4.4.5_A2_T4.js
@@ -0,0 +1,95 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The join function is intentionally generic.
+    It does not require that its this value be an Array object
+esid: sec-array.prototype.join
+description: >
+    Operator use ToNumber from length.  If Type(value) is Object,
+    evaluate ToPrimitive(value, Number)
+---*/
+
+var obj = {};
+obj.join = Array.prototype.join;
+
+obj.length = {
+  valueOf() {
+    return 3
+  }
+};
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
+
+obj.length = {
+  valueOf() {
+    return 3
+  },
+  toString() {
+    return 2
+  }
+};
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
+
+obj.length = {
+  valueOf() {
+    return 3
+  },
+  toString() {
+    return {}
+  }
+};
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
+
+obj.length = {
+  valueOf() {
+    return 3
+  },
+  toString() {
+    throw new Test262Error();
+  }
+};
+assert.sameValue(obj.join(), ",,", 'obj.join() must return ",,"');
+
+obj.length = {
+  toString() {
+    return 2
+  }
+};
+assert.sameValue(obj.join(), ",", 'obj.join() must return ","');
+
+obj.length = {
+  valueOf() {
+    return {}
+  },
+  toString() {
+    return 2
+  }
+}
+assert.sameValue(obj.join(), ",", 'obj.join() must return ","');
+
+assert.throws(Test262Error, () => {
+  obj.length = {
+    valueOf() {
+      throw new Test262Error();
+    },
+    toString() {
+      return 2
+    }
+  };
+  obj.join();
+});
+
+assert.throws(TypeError, () => {
+  obj.length = {
+    valueOf() {
+      return {}
+    },
+    toString() {
+      return {}
+    }
+  };
+  obj.join();
+});
+
+reportCompare(0, 0);