diff --git a/test/built-ins/Reflect/defineProperty/define-properties.js b/test/built-ins/Reflect/defineProperty/define-properties.js
new file mode 100644
index 0000000000..45ea369b64
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/define-properties.js
@@ -0,0 +1,39 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Define properties from the attributes object.
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  ...
+  6. Return target.[[DefineOwnProperty]](key, desc).
+includes: [propertyHelper.js]
+---*/
+
+var o = {};
+var desc;
+
+Reflect.defineProperty(o, 'p1', {
+  value: 42,
+  writable: true,
+  enumerable: true
+});
+
+assert.sameValue(o.p1, 42);
+
+verifyWritable(o, 'p1');
+verifyNotConfigurable(o, 'p1');
+verifyEnumerable(o, 'p1');
+
+var f1 = function() {};
+var f2 = function() {};
+Reflect.defineProperty(o, 'p2', {
+  get: f1,
+  set: f2
+});
+
+desc = Object.getOwnPropertyDescriptor(o, 'p2');
+assert.sameValue(desc.get, f1);
+assert.sameValue(desc.set, f2);
diff --git a/test/built-ins/Reflect/defineProperty/define-symbol-properties.js b/test/built-ins/Reflect/defineProperty/define-symbol-properties.js
new file mode 100644
index 0000000000..79e1a5d0ca
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/define-symbol-properties.js
@@ -0,0 +1,53 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Define symbol properties.
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  ...
+  2. Let key be ToPropertyKey(propertyKey).
+  ...
+
+  7.1.14 ToPropertyKey ( argument )
+
+  ...
+  3. If Type(key) is Symbol, then
+    a. Return key.
+  ...
+features: [Symbol]
+---*/
+
+var o = {};
+var desc;
+
+var s1 = Symbol('1');
+
+Reflect.defineProperty(o, s1, {
+  value: 42,
+  writable: true,
+  enumerable: true
+});
+
+assert.sameValue(o[s1], 42);
+
+desc = Object.getOwnPropertyDescriptor(o, s1);
+
+assert.sameValue(desc.writable, true);
+assert.sameValue(desc.configurable, false);
+assert.sameValue(desc.enumerable, true);
+
+var s2 = Symbol('2');
+
+var f1 = function() {};
+var f2 = function() {};
+Reflect.defineProperty(o, s2, {
+  get: f1,
+  set: f2
+});
+
+desc = Object.getOwnPropertyDescriptor(o, s2);
+assert.sameValue(desc.get, f1);
+assert.sameValue(desc.set, f2);
diff --git a/test/built-ins/Reflect/defineProperty/defineProperty.js b/test/built-ins/Reflect/defineProperty/defineProperty.js
new file mode 100644
index 0000000000..d95496aa08
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/defineProperty.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Reflect.defineProperty is configurable, writable and not enumerable.
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  17 ECMAScript Standard Built-in Objects
+
+includes: [propertyHelper.js]
+---*/
+
+verifyNotEnumerable(Reflect, 'defineProperty');
+verifyWritable(Reflect, 'defineProperty');
+verifyConfigurable(Reflect, 'defineProperty');
diff --git a/test/built-ins/Reflect/defineProperty/length.js b/test/built-ins/Reflect/defineProperty/length.js
new file mode 100644
index 0000000000..02005b2e24
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/length.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Reflect.defineProperty.length value and property descriptor
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(
+  Reflect.defineProperty.length, 3,
+  'The value of `Reflect.defineProperty.length` is `3`'
+);
+
+verifyNotEnumerable(Reflect.defineProperty, 'length');
+verifyNotWritable(Reflect.defineProperty, 'length');
+verifyConfigurable(Reflect.defineProperty, 'length');
diff --git a/test/built-ins/Reflect/defineProperty/name.js b/test/built-ins/Reflect/defineProperty/name.js
new file mode 100644
index 0000000000..fea916ebef
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/name.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Reflect.defineProperty.name value and property descriptor
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  17 ECMAScript Standard Built-in Objects
+
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(
+  Reflect.defineProperty.name, 'defineProperty',
+  'The value of `Reflect.defineProperty.name` is `"defineProperty"`'
+);
+
+verifyNotEnumerable(Reflect.defineProperty, 'name');
+verifyNotWritable(Reflect.defineProperty, 'name');
+verifyConfigurable(Reflect.defineProperty, 'name');
diff --git a/test/built-ins/Reflect/defineProperty/return-abrupt-from-attributes.js b/test/built-ins/Reflect/defineProperty/return-abrupt-from-attributes.js
new file mode 100644
index 0000000000..34ec9d586f
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/return-abrupt-from-attributes.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Return abrupt from ToPropertyDescriptor(attributes).
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  ...
+  4. Let desc be ToPropertyDescriptor(attributes).
+  5. ReturnIfAbrupt(desc).
+  ...
+---*/
+
+var attributes = {};
+
+Object.defineProperty(attributes, 'enumerable', {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, function() {
+  Reflect.defineProperty({}, 'a', attributes);
+});
diff --git a/test/built-ins/Reflect/defineProperty/return-abrupt-from-property-key.js b/test/built-ins/Reflect/defineProperty/return-abrupt-from-property-key.js
new file mode 100644
index 0000000000..d6efe614c4
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/return-abrupt-from-property-key.js
@@ -0,0 +1,24 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Return abrupt from ToPropertyKey(propertyKey)
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  ...
+  2. Let key be ToPropertyKey(propertyKey).
+  3. ReturnIfAbrupt(key).
+  ...
+---*/
+
+var p = {
+  toString: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  Reflect.defineProperty({}, p);
+});
diff --git a/test/built-ins/Reflect/defineProperty/return-abrupt-from-result.js b/test/built-ins/Reflect/defineProperty/return-abrupt-from-result.js
new file mode 100644
index 0000000000..13664f6b1c
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/return-abrupt-from-result.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Return abrupt result on defining a property.
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  ...
+  6. Return target.[[DefineOwnProperty]](key, desc).
+  ...
+
+  9.1.6.1 OrdinaryDefineOwnProperty (O, P, Desc)
+
+  1. Let current be O.[[GetOwnProperty]](P).
+  2. ReturnIfAbrupt(current).
+  ...
+features: [Proxy]
+---*/
+
+var o = {};
+var p = new Proxy(o, {
+  defineProperty: function() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, function() {
+  Reflect.defineProperty(p, 'p1', {});
+});
diff --git a/test/built-ins/Reflect/defineProperty/return-boolean.js b/test/built-ins/Reflect/defineProperty/return-boolean.js
new file mode 100644
index 0000000000..deb9dd00df
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/return-boolean.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Return boolean result of the property definition.
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  ...
+  6. Return target.[[DefineOwnProperty]](key, desc).
+---*/
+
+var o = {};
+
+o.p1 = 'foo';
+assert.sameValue(Reflect.defineProperty(o, 'p1', {}), true);
+assert.sameValue(o.hasOwnProperty('p1'), true);
+
+assert.sameValue(Reflect.defineProperty(o, 'p2', {value: 42}), true);
+assert.sameValue(o.hasOwnProperty('p2'), true);
+
+Object.freeze(o);
+
+assert.sameValue(Reflect.defineProperty(o, 'p2', {value: 43}), false);
+assert.sameValue(o.p2, 42);
+
+assert.sameValue(Reflect.defineProperty(o, 'p3', {}), false);
+assert.sameValue(o.hasOwnProperty('p4'), false);
+
+assert.sameValue(Reflect.defineProperty(o, 'p4', {value: 1}), false);
+assert.sameValue(o.hasOwnProperty('p4'), false);
diff --git a/test/built-ins/Reflect/defineProperty/target-is-not-object-throws.js b/test/built-ins/Reflect/defineProperty/target-is-not-object-throws.js
new file mode 100644
index 0000000000..421e700cf6
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/target-is-not-object-throws.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Throws a TypeError if target is not an Object.
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  1. If Type(target) is not Object, throw a TypeError exception.
+  ...
+---*/
+
+assert.throws(TypeError, function() {
+  Reflect.defineProperty(1, 'p', {});
+});
+
+assert.throws(TypeError, function() {
+  Reflect.defineProperty(null, 'p', {});
+});
+
+assert.throws(TypeError, function() {
+  Reflect.defineProperty(undefined, 'p', {});
+});
+
+assert.throws(TypeError, function() {
+  Reflect.defineProperty('', 'p', {});
+});
diff --git a/test/built-ins/Reflect/defineProperty/target-is-symbol-throws.js b/test/built-ins/Reflect/defineProperty/target-is-symbol-throws.js
new file mode 100644
index 0000000000..5cef833187
--- /dev/null
+++ b/test/built-ins/Reflect/defineProperty/target-is-symbol-throws.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 26.1.3
+description: >
+  Throws a TypeError if target is a Symbol
+info: >
+  26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+
+  1. If Type(target) is not Object, throw a TypeError exception.
+  ...
+features: [Symbol]
+---*/
+
+assert.throws(TypeError, function() {
+  Reflect.defineProperty(Symbol(1), 'p', {});
+});