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Unified Diff: test/mjsunit/compiler/reflect-construct.js

Issue 2949813002: [turbofan] Introduce new JSConstructWithArrayLike operator. (Closed)
Patch Set: Address feedback. Created 3 years, 6 months ago
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Index: test/mjsunit/compiler/reflect-construct.js
diff --git a/test/mjsunit/compiler/reflect-construct.js b/test/mjsunit/compiler/reflect-construct.js
new file mode 100644
index 0000000000000000000000000000000000000000..fb70ff44123eb7cf460cc5c4b20e49988de3e353
--- /dev/null
+++ b/test/mjsunit/compiler/reflect-construct.js
@@ -0,0 +1,130 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+// Test Reflect.construct with wrong number of arguments.
+(function() {
+ "use strict";
+ function A() {}
+ function foo() { return Reflect.construct(A); }
+
+ assertThrows(foo);
+ assertThrows(foo);
+ %OptimizeFunctionOnNextCall(foo);
+ assertThrows(foo);
+})();
+(function() {
+ "use strict";
+ function A(x) { this.x = x; }
+ function foo() { return Reflect.construct(A, arguments); }
+
+ assertInstanceof(foo(), A);
+ assertInstanceof(foo(), A);
+ assertEquals(1, foo(1).x);
+ %OptimizeFunctionOnNextCall(foo);
+ assertInstanceof(foo(), A);
+ assertEquals(1, foo(1).x);
+})();
+(function() {
+ "use strict";
+ function A(x) { this.x = x; }
+ function foo() { return Reflect.construct(A, arguments, A, A); }
+
+ assertInstanceof(foo(), A);
+ assertInstanceof(foo(), A);
+ assertEquals(1, foo(1).x);
+ %OptimizeFunctionOnNextCall(foo);
+ assertInstanceof(foo(), A);
+ assertEquals(1, foo(1).x);
+})();
+
+// Test Reflect.construct within try/catch.
+(function() {
+ "use strict";
+ function foo(bar) {
+ try {
+ return Reflect.construct(bar, arguments, bar);
+ } catch (e) {
+ return 1;
+ }
+ }
+
+ assertEquals(1, foo());
+ assertEquals(1, foo());
+ %OptimizeFunctionOnNextCall(foo);
+ assertEquals(1, foo());
+})();
+(function() {
+ "use strict";
+ function foo(bar) {
+ try {
+ return Reflect.construct(bar, bar, bar);
+ } catch (e) {
+ return 1;
+ }
+ }
+
+ assertEquals(1, foo());
+ assertEquals(1, foo());
+ %OptimizeFunctionOnNextCall(foo);
+ assertEquals(1, foo());
+})();
+
+// Test proper order of constructor check(s) and array-like iteration.
+(function() {
+ var dummy_length_counter = 0;
+ var dummy = { get length() { ++dummy_length_counter; return 0; } };
+
+ function foo() {
+ return Reflect.construct(undefined, dummy, undefined);
+ }
+
+ assertThrows(foo, TypeError);
+ assertThrows(foo, TypeError);
+ %OptimizeFunctionOnNextCall(foo);
+ assertThrows(foo, TypeError);
+ assertEquals(0, dummy_length_counter);
+})();
+(function() {
+ var dummy_length_counter = 0;
+ var dummy = { get length() { ++dummy_length_counter; return 0; } };
+
+ function foo() {
+ return Reflect.construct(undefined, dummy);
+ }
+
+ assertThrows(foo, TypeError);
+ assertThrows(foo, TypeError);
+ %OptimizeFunctionOnNextCall(foo);
+ assertThrows(foo, TypeError);
+ assertEquals(0, dummy_length_counter);
+})();
+(function() {
+ var dummy_length_counter = 0;
+ var dummy = { get length() { ++dummy_length_counter; return 0; } };
+
+ function foo() {
+ return Reflect.construct(null, dummy, null);
+ }
+
+ assertThrows(foo, TypeError);
+ assertThrows(foo, TypeError);
+ %OptimizeFunctionOnNextCall(foo);
+ assertThrows(foo, TypeError);
+ assertEquals(0, dummy_length_counter);
+})();(function() {
+ var dummy_length_counter = 0;
+ var dummy = { get length() { ++dummy_length_counter; return 0; } };
+
+ function foo() {
+ return Reflect.construct(null, dummy);
+ }
+
+ assertThrows(foo, TypeError);
+ assertThrows(foo, TypeError);
+ %OptimizeFunctionOnNextCall(foo);
+ assertThrows(foo, TypeError);
+ assertEquals(0, dummy_length_counter);
+})();
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