1 files changed, 100 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/toString/S15.4.4.2_A1_T4.js b/js/src/tests/test262/built-ins/Array/prototype/toString/S15.4.4.2_A1_T4.js
new file mode 100644
index 0000000000..edf9e63a9b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/toString/S15.4.4.2_A1_T4.js
@@ -0,0 +1,100 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.tostring
+info: |
+    The result of calling this function is the same as if
+    the built-in join method were invoked for this object with no argument
+es5id: 15.4.4.2_A1_T4
+description: If Type(value) is Object, evaluate ToPrimitive(value, String)
+---*/
+
+var object = {
+  valueOf() {
+    return "+"
+  }
+};
+var x = new Array(object);
+assert.sameValue(x.toString(), x.join(), 'x.toString() must return the same value returned by x.join()');
+
+var object = {
+  valueOf() {
+    return "+"
+  },
+  toString() {
+    return "*"
+  }
+};
+var x = new Array(object);
+assert.sameValue(x.toString(), x.join(), 'x.toString() must return the same value returned by x.join()');
+
+var object = {
+  valueOf() {
+    return "+"
+  },
+  toString() {
+    return {}
+  }
+};
+var x = new Array(object);
+assert.sameValue(x.toString(), x.join(), 'x.toString() must return the same value returned by x.join()');
+
+var object = {
+  valueOf() {
+    throw "error"
+  },
+  toString() {
+    return "*"
+  }
+};
+var x = new Array(object);
+assert.sameValue(x.toString(), x.join(), 'x.toString() must return the same value returned by x.join()');
+
+
+var object = {
+  toString() {
+    return "*"
+  }
+};
+var x = new Array(object);
+assert.sameValue(x.toString(), x.join(), 'x.toString() must return the same value returned by x.join()');
+
+var object = {
+  valueOf() {
+    return {}
+  },
+  toString() {
+    return "*"
+  }
+}
+var x = new Array(object);
+assert.sameValue(x.toString(), x.join(), 'x.toString() must return the same value returned by x.join()');
+
+assert.throws(Test262Error, () => {
+  var object = {
+    valueOf() {
+      return "+"
+    },
+    toString() {
+      throw new Test262Error();
+    }
+  };
+  var x = new Array(object);
+  x.toString();
+});
+
+assert.throws(TypeError, () => {
+  var object = {
+    valueOf() {
+      return {}
+    },
+    toString() {
+      return {}
+    }
+  };
+  var x = new Array(object);
+  x.toString();
+});
+
+reportCompare(0, 0);