summaryrefslogtreecommitdiffstats
path: root/js/src/tests/test262/built-ins/Array/from/source-object-length-set-elem-prop-err.js
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/tests/test262/built-ins/Array/from/source-object-length-set-elem-prop-err.js')
-rw-r--r--js/src/tests/test262/built-ins/Array/from/source-object-length-set-elem-prop-err.js54
1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/from/source-object-length-set-elem-prop-err.js b/js/src/tests/test262/built-ins/Array/from/source-object-length-set-elem-prop-err.js
new file mode 100644
index 0000000000..119e5898b9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/from/source-object-length-set-elem-prop-err.js
@@ -0,0 +1,54 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.from
+description: >
+ TypeError is thrown if CreateDataProperty fails.
+ (items is not iterable)
+info: |
+ Array.from ( items [ , mapfn [ , thisArg ] ] )
+
+ [...]
+ 4. Let usingIterator be ? GetMethod(items, @@iterator).
+ 5. If usingIterator is not undefined, then
+ [...]
+ 6. NOTE: items is not an Iterable so assume it is an array-like object.
+ [...]
+ 12. Repeat, while k < len
+ [...]
+ e. Perform ? CreateDataPropertyOrThrow(A, Pk, mappedValue).
+ [...]
+
+ CreateDataPropertyOrThrow ( O, P, V )
+
+ [...]
+ 3. Let success be ? CreateDataProperty(O, P, V).
+ 4. If success is false, throw a TypeError exception.
+---*/
+
+var items = {
+ length: 1,
+};
+
+var A1 = function(_length) {
+ this.length = 0;
+ Object.preventExtensions(this);
+};
+
+assert.throws(TypeError, function() {
+ Array.from.call(A1, items);
+}, 'Array.from.call(A1, items) throws a TypeError exception');
+
+var A2 = function(_length) {
+ Object.defineProperty(this, "0", {
+ writable: true,
+ configurable: false,
+ });
+};
+
+assert.throws(TypeError, function() {
+ Array.from.call(A2, items);
+}, 'Array.from.call(A2, items) throws a TypeError exception');
+
+reportCompare(0, 0);