v8/test/mjsunit/compiler/function-bind.js

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// 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
(function() {
"use strict";
function bar() { return this; }
function foo(x) {
return bar.bind(x);
}
assertEquals(0, foo(0)());
assertEquals(1, foo(1)());
%OptimizeFunctionOnNextCall(foo);
assertEquals("", foo("")());
})();
(function() {
"use strict";
function bar(x) { return x; }
function foo(x) {
return bar.bind(undefined, x);
}
assertEquals(0, foo(0)());
assertEquals(1, foo(1)());
%OptimizeFunctionOnNextCall(foo);
assertEquals("", foo("")());
})();
(function() {
function bar(x) { return x; }
function foo(x) {
return bar.bind(undefined, x);
}
assertEquals(0, foo(0)());
assertEquals(1, foo(1)());
%OptimizeFunctionOnNextCall(foo);
assertEquals("", foo("")());
})();
(function() {
"use strict";
function bar(x, y) { return x + y; }
function foo(x, y) {
return bar.bind(undefined, x, y);
}
assertEquals(0, foo(0, 0)());
assertEquals(2, foo(1, 1)());
%OptimizeFunctionOnNextCall(foo);
assertEquals("ab", foo("a", "b")());
assertEquals(0, foo(0, 1).length);
assertEquals("bound bar", foo(1, 2).name)
})();
(function() {
function bar(x, y) { return x + y; }
function foo(x, y) {
return bar.bind(undefined, x, y);
}
assertEquals(0, foo(0, 0)());
assertEquals(2, foo(1, 1)());
%OptimizeFunctionOnNextCall(foo);
assertEquals("ab", foo("a", "b")());
assertEquals(0, foo(0, 1).length);
assertEquals("bound bar", foo(1, 2).name)
})();