Add coverage for non object values of the Properties arg of Object.create (#2238)

Fixes #2237

test/built-ins/Object/create/properties-arg-to-object-bigint.js

@@ -0,0 +1,35 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.create
+description: >
+  The Properties argument is cast to an object if it's a BigInt value
+info: |
+  Object.create ( O, Properties )
+
+  3. If Properties is not undefined, then
+    a. Return ? ObjectDefineProperties(obj, Properties).
+
+  Runtime Semantics: ObjectDefineProperties ( O, Properties )
+
+  2. Let props be ? ToObject(Properties).
+  3. Let keys be ? props.[[OwnPropertyKeys]]().
+  ...
+  // All enumerable keys are added to the created object.
+features: [BigInt]
+---*/
+
+var proto = {};
+
+var obj;
+obj = Object.create(proto, 1n);
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is 1n: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is 1n: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is 1n: no symbol keys set');
+
+obj = undefined;
+obj = Object.create(proto, 0n);
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is 0n: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is 0n: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is 0n: no symbol keys set');

test/built-ins/Object/create/properties-arg-to-object-non-empty-string.js

@@ -0,0 +1,35 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.create
+description: >
+  Throws a TypeError if the Properties argument is a non-empty string
+info: |
+  Object.create ( O, Properties )
+
+  3. If Properties is not undefined, then
+    a. Return ? ObjectDefineProperties(obj, Properties).
+
+  Runtime Semantics: ObjectDefineProperties ( O, Properties )
+
+  2. Let props be ? ToObject(Properties).
+  3. Let keys be ? props.[[OwnPropertyKeys]]().
+  4. Let descriptors be a new empty List.
+  5. For each element nextKey of keys in List order, do
+    a. Let propDesc be ? props.[[GetOwnProperty]](nextKey).
+    b. If propDesc is not undefined and propDesc.[[Enumerable]] is true, then
+      i. Let descObj be ? Get(props, nextKey).
+      ii. Let desc be ? ToPropertyDescriptor(descObj).
+
+  ToPropertyDescriptor ( Obj )
+
+  1. If Type(Obj) is not Object, throw a TypeError exception.
+---*/
+
+// The first nextKey is 'h' and its OwnProperty in the String object is enumerable
+// Get(props, nextKey) is an equivalent of Object('hello')[nextKey]
+// The first descObj will be 'h', so it will throw in ToPropertyDescriptor
+assert.throws(TypeError, function() {
+  Object.create({}, 'hello');
+});

test/built-ins/Object/create/properties-arg-to-object-null.js

@@ -0,0 +1,21 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.create
+description: >
+  Throws a TypeError if the Properties argument is null
+info: |
+  Object.create ( O, Properties )
+
+  3. If Properties is not undefined, then
+    a. Return ? ObjectDefineProperties(obj, Properties).
+
+  Runtime Semantics: ObjectDefineProperties ( O, Properties )
+
+  2. Let props be ? ToObject(Properties).
+---*/
+
+assert.throws(TypeError, function() {
+  Object.create({}, null);
+});

test/built-ins/Object/create/properties-arg-to-object.js

@@ -0,0 +1,59 @@
+// Copyright (C) 2019 Leo Balter. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-object.create
+description: >
+  The Properties argument is cast to an object if not undefined
+info: |
+  Object.create ( O, Properties )
+
+  3. If Properties is not undefined, then
+    a. Return ? ObjectDefineProperties(obj, Properties).
+
+  Runtime Semantics: ObjectDefineProperties ( O, Properties )
+
+  2. Let props be ? ToObject(Properties).
+  3. Let keys be ? props.[[OwnPropertyKeys]]().
+  ...
+  // All enumerable keys are added to the created object.
+features: [Symbol]
+---*/
+
+var proto = {};
+
+var obj;
+obj = Object.create(proto, true);
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is true: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is true: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is true: no symbol keys set');
+
+obj = undefined;
+obj = Object.create(proto, false);
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is false: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is false: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is false: no symbol keys set');
+
+obj = undefined;
+obj = Object.create(proto, 1);
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is 1: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is 1: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is 1: no symbol keys set');
+
+obj = undefined;
+obj = Object.create(proto, NaN);
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is NaN: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is NaN: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is NaN: no symbol keys set');
+
+obj = undefined;
+obj = Object.create(proto, '');
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is the empty string: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is the empty string: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is the empty string: no symbol keys set');
+
+obj = undefined;
+obj = Object.create(proto, Symbol('s'));
+assert.sameValue(Object.getPrototypeOf(obj), proto, 'Properties is symbol: prototype is set');
+assert.sameValue(Object.getOwnPropertyNames(obj).length, 0, 'Properties is symbol: no keys set');
+assert.sameValue(Object.getOwnPropertySymbols(obj).length, 0, 'Properties is symbol: no symbol keys set');