Add tests for Array methods throwing with string receiver. (#2463)

test/built-ins/Array/prototype/pop/throws-with-string-receiver.js

@@ -0,0 +1,29 @@
+// Copyright (C) 2020 Sony Interactive Entertainment Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.pop
+description: >
+  Array#pop throws TypeError upon attempting to modify a string
+info: |
+  Array.prototype.pop ( )
+  ...
+  3. If len is zero, then
+    a. Perform ? Set(O, "length", 0, true).
+    ...
+  4. Else,
+    ...
+    f. Perform ? Set(O, "length", newLen, true).
+
+  Set ( O, P, V, Throw )
+  ...
+  4. Let success be ? O.[[Set]](P, V, O).
+  5. If success is false and Throw is true, throw a TypeError exception.
+---*/
+
+assert.throws(TypeError, () => {
+  Array.prototype.pop.call('');
+}, "Array.prototype.pop.call('')");
+
+assert.throws(TypeError, () => {
+  Array.prototype.pop.call('abc');
+}, "Array.prototype.pop.call('abc')");

test/built-ins/Array/prototype/push/throws-with-string-receiver.js

@@ -0,0 +1,36 @@
+// Copyright (C) 2020 Sony Interactive Entertainment Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.push
+description: >
+  Array#push throws TypeError upon attempting to modify a string
+info: |
+  Array.prototype.push ( ...items )
+  ...
+  6. Repeat, while items is not empty
+    ...
+    b. Perform ? Set(O, ! ToString(len), E, true).
+    ...
+  7. Perform ? Set(O, "length", len, true).
+
+  Set ( O, P, V, Throw )
+  ...
+  4. Let success be ? O.[[Set]](P, V, O).
+  5. If success is false and Throw is true, throw a TypeError exception.
+---*/
+
+assert.throws(TypeError, () => {
+  Array.prototype.push.call('');
+}, "Array.prototype.push.call('')");
+
+assert.throws(TypeError, () => {
+  Array.prototype.push.call('', 1);
+}, "Array.prototype.push.call('', 1)");
+
+assert.throws(TypeError, () => {
+  Array.prototype.push.call('abc');
+}, "Array.prototype.push.call('abc')");
+
+assert.throws(TypeError, () => {
+  Array.prototype.push.call('abc', 1);
+}, "Array.prototype.push.call('abc', 1)");

test/built-ins/Array/prototype/shift/throws-with-string-receiver.js

@@ -0,0 +1,27 @@
+// Copyright (C) 2020 Sony Interactive Entertainment Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.shift
+description: >
+  Array#shift throws TypeError upon attempting to modify a string
+info: |
+  Array.prototype.shift ( )
+  ...
+  3. If len is zero, then
+    a. Perform ? Set(O, "length", 0, true).
+    ...
+  8. Perform ? Set(O, "length", len - 1, true).
+
+  Set ( O, P, V, Throw )
+  ...
+  4. Let success be ? O.[[Set]](P, V, O).
+  5. If success is false and Throw is true, throw a TypeError exception.
+---*/
+
+assert.throws(TypeError, () => {
+  Array.prototype.shift.call('');
+}, "Array.prototype.shift.call('')");
+
+assert.throws(TypeError, () => {
+  Array.prototype.shift.call('abc');
+}, "Array.prototype.shift.call('abc')");

test/built-ins/Array/prototype/unshift/throws-with-string-receiver.js

@@ -0,0 +1,45 @@
+// Copyright (C) 2020 Sony Interactive Entertainment Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.unshift
+description: >
+  Array#unshift throws TypeError upon attempting to modify a string
+info: |
+  Array.prototype.unshift ( ...items )
+  ...
+  4. If argCount > 0, then
+    ...
+    c. Repeat, while k > 0,
+      ...
+      iv. If fromPresent is true, then
+        ...
+        2. Perform ? Set(O, to, fromValue, true).
+      ...
+    ...
+    f. Repeat, while items is not empty
+      ...
+      Perform ? Set(O, ! ToString(j), E, true).
+      ...
+  5. Perform ? Set(O, "length", len + argCount, true).
+
+  Set ( O, P, V, Throw )
+  ...
+  4. Let success be ? O.[[Set]](P, V, O).
+  5. If success is false and Throw is true, throw a TypeError exception.
+---*/
+
+assert.throws(TypeError, () => {
+  Array.prototype.unshift.call('');
+}, "Array.prototype.unshift.call('')");
+
+assert.throws(TypeError, () => {
+  Array.prototype.unshift.call('', 1);
+}, "Array.prototype.unshift.call('', 1)");
+
+assert.throws(TypeError, () => {
+  Array.prototype.unshift.call('abc');
+}, "Array.prototype.unshift.call('abc')");
+
+assert.throws(TypeError, () => {
+  Array.prototype.unshift.call('abc', 1);
+}, "Array.prototype.unshift.call('abc', 1)");