| // Copyright 2015 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: --harmony-default-parameters --harmony-arrow-functions |
| // Flags: --harmony-rest-parameters --harmony-destructuring |
| |
| |
| (function TestDefaults() { |
| function f1(x = 1) { return x } |
| assertEquals(1, f1()); |
| assertEquals(1, f1(undefined)); |
| assertEquals(2, f1(2)); |
| assertEquals(null, f1(null)); |
| |
| function f2(x, y = x) { return x + y; } |
| assertEquals(8, f2(4)); |
| assertEquals(8, f2(4, undefined)); |
| assertEquals(6, f2(4, 2)); |
| |
| function f3(x = 1, y) { return x + y; } |
| assertEquals(8, f3(5, 3)); |
| assertEquals(3, f3(undefined, 2)); |
| assertEquals(6, f3(4, 2)); |
| |
| function f4(x = () => 1) { return x() } |
| assertEquals(1, f4()); |
| assertEquals(1, f4(undefined)); |
| assertEquals(2, f4(() => 2)); |
| assertThrows(() => f4(null), TypeError); |
| |
| function f5(x, y = () => x) { return x + y(); } |
| assertEquals(8, f5(4)); |
| assertEquals(8, f5(4, undefined)); |
| assertEquals(6, f5(4, () => 2)); |
| |
| function f6(x = {a: 1, m() { return 2 }}) { return x.a + x.m(); } |
| assertEquals(3, f6()); |
| assertEquals(3, f6(undefined)); |
| assertEquals(5, f6({a: 2, m() { return 3 }})); |
| |
| var g1 = (x = 1) => { return x }; |
| assertEquals(1, g1()); |
| assertEquals(1, g1(undefined)); |
| assertEquals(2, g1(2)); |
| assertEquals(null, g1(null)); |
| |
| var g2 = (x, y = x) => { return x + y; }; |
| assertEquals(8, g2(4)); |
| assertEquals(8, g2(4, undefined)); |
| assertEquals(6, g2(4, 2)); |
| |
| var g3 = (x = 1, y) => { return x + y; }; |
| assertEquals(8, g3(5, 3)); |
| assertEquals(3, g3(undefined, 2)); |
| assertEquals(6, g3(4, 2)); |
| |
| var g4 = (x = () => 1) => { return x() }; |
| assertEquals(1, g4()); |
| assertEquals(1, g4(undefined)); |
| assertEquals(2, g4(() => 2)); |
| assertThrows(() => g4(null), TypeError); |
| |
| var g5 = (x, y = () => x) => { return x + y(); }; |
| assertEquals(8, g5(4)); |
| assertEquals(8, g5(4, undefined)); |
| assertEquals(6, g5(4, () => 2)); |
| |
| var g6 = (x = {a: 1, m() { return 2 }}) => { return x.a + x.m(); }; |
| assertEquals(3, g6()); |
| assertEquals(3, g6(undefined)); |
| assertEquals(5, g6({a: 2, m() { return 3 }})); |
| }()); |
| |
| |
| (function TestEvalInParameters() { |
| function f1(x = eval(0)) { return x } |
| assertEquals(0, f1()); |
| function f2(x = () => eval(1)) { return x() } |
| assertEquals(1, f2()); |
| })(); |
| |
| |
| (function TestParameterScoping() { |
| var x = 1; |
| |
| function f1(a = x) { var x = 2; return a; } |
| assertEquals(1, f1()); |
| function f2(a = x) { function x() {}; return a; } |
| assertEquals(1, f2()); |
| function f3(a = x) { 'use strict'; let x = 2; return a; } |
| assertEquals(1, f3()); |
| function f4(a = x) { 'use strict'; const x = 2; return a; } |
| assertEquals(1, f4()); |
| function f5(a = x) { 'use strict'; function x() {}; return a; } |
| assertEquals(1, f5()); |
| function f6(a = eval("x")) { var x; return a; } |
| assertEquals(1, f6()); |
| function f61(a = eval("x")) { 'use strict'; var x; return a; } |
| assertEquals(1, f61()); |
| function f62(a = eval("'use strict'; x")) { var x; return a; } |
| assertEquals(1, f62()); |
| function f7(a = function() { return x }) { var x; return a(); } |
| assertEquals(1, f7()); |
| function f8(a = () => x) { var x; return a(); } |
| assertEquals(1, f8()); |
| function f9(a = () => eval("x")) { var x; return a(); } |
| assertEquals(1, f9()); |
| function f91(a = () => eval("x")) { 'use strict'; var x; return a(); } |
| assertEquals(1, f91()); |
| function f92(a = () => { 'use strict'; return eval("x") }) { var x; return a(); } |
| assertEquals(1, f92()); |
| function f93(a = () => eval("'use strict'; x")) { var x; return a(); } |
| assertEquals(1, f93()); |
| |
| var g1 = (a = x) => { var x = 2; return a; }; |
| assertEquals(1, g1()); |
| var g2 = (a = x) => { function x() {}; return a; }; |
| assertEquals(1, g2()); |
| var g3 = (a = x) => { 'use strict'; let x = 2; return a; }; |
| assertEquals(1, g3()); |
| var g4 = (a = x) => { 'use strict'; const x = 2; return a; }; |
| assertEquals(1, g4()); |
| var g5 = (a = x) => { 'use strict'; function x() {}; return a; }; |
| assertEquals(1, g5()); |
| var g6 = (a = eval("x")) => { var x; return a; }; |
| assertEquals(1, g6()); |
| var g61 = (a = eval("x")) => { 'use strict'; var x; return a; }; |
| assertEquals(1, g61()); |
| var g62 = (a = eval("'use strict'; x")) => { var x; return a; }; |
| assertEquals(1, g62()); |
| var g7 = (a = function() { return x }) => { var x; return a(); }; |
| assertEquals(1, g7()); |
| var g8 = (a = () => x) => { var x; return a(); }; |
| assertEquals(1, g8()); |
| var g9 = (a = () => eval("x")) => { var x; return a(); }; |
| assertEquals(1, g9()); |
| var g91 = (a = () => eval("x")) => { 'use strict'; var x; return a(); }; |
| assertEquals(1, g91()); |
| var g92 = (a = () => { 'use strict'; return eval("x") }) => { var x; return a(); }; |
| assertEquals(1, g92()); |
| var g93 = (a = () => eval("'use strict'; x")) => { var x; return a(); }; |
| assertEquals(1, g93()); |
| |
| var f11 = function f(x = f) { var f; return x; } |
| assertSame(f11, f11()); |
| var f12 = function f(x = f) { function f() {}; return x; } |
| assertSame(f12, f12()); |
| var f13 = function f(x = f) { 'use strict'; let f; return x; } |
| assertSame(f13, f13()); |
| var f14 = function f(x = f) { 'use strict'; const f = 0; return x; } |
| assertSame(f14, f14()); |
| var f15 = function f(x = f) { 'use strict'; function f() {}; return x; } |
| assertSame(f15, f15()); |
| var f16 = function f(f = 7, x = f) { return x; } |
| assertSame(7, f16()); |
| |
| var o1 = {f: function(x = this) { return x; }}; |
| assertSame(o1, o1.f()); |
| assertSame(1, o1.f(1)); |
| })(); |
| |
| |
| (function TestSloppyEvalScoping() { |
| var x = 1; |
| |
| function f1(y = eval("var x = 2")) { with ({}) { return x; } } |
| assertEquals(1, f1()); |
| function f2(y = eval("var x = 2"), z = x) { return z; } |
| assertEquals(1, f2()); |
| assertEquals(1, f2(0)); |
| function f3(y = eval("var x = 2"), z = eval("x")) { return z; } |
| assertEquals(1, f3()); |
| assertEquals(1, f3(0)); |
| // TODO(rossberg): eval inside patterns is not recognized yet. |
| // function f41({[eval("var x = 2; 'a'")]: w}, z = x)) { return z; } |
| // assertEquals(1, f41({})); |
| // assertEquals(1, f41({a: 0})); |
| // function f42({[eval("var x = 2; 'a'")]: w}, z = eval("x")) { return z; } |
| // assertEquals(1, f42({})); |
| // assertEquals(1, f42({a: 0})); |
| // function f43({a: w = eval("var x = 2")}, z = x) { return z; } |
| // assertEquals(1, f43({})); |
| // assertEquals(1, f43({a: 0})); |
| // function f44({a: w = eval("var x = 2")}, z = eval("x")) { return z; } |
| // assertEquals(1, f44({})); |
| // assertEquals(1, f44({a: 0})); |
| |
| function f5({a = eval("var x = 2"), b = x}) { return b; } |
| assertEquals(2, f5({})); |
| assertEquals(1, f5({a: 0})); |
| function f6({a = eval("var x = 2"), b = eval("x")}) { return b; } |
| assertEquals(2, f6({})); |
| assertEquals(1, f6({a: 0})); |
| function f71({[eval("var x = 2; 'a'")]: w, b = x}) { return b; } |
| assertEquals(2, f71({})); |
| assertEquals(2, f71({a: 0})); |
| function f72({[eval("var x = 2; 'a'")]: w, b = eval("x")}) { return b; } |
| assertEquals(2, f72({})); |
| assertEquals(2, f72({a: 0})); |
| function f73({a: w = eval("var x = 2"), b = x}) { return b; } |
| assertEquals(2, f73({})); |
| assertEquals(1, f73({a: 0})); |
| function f74({a: w = eval("var x = 2"), b = eval("x")}) { return b; } |
| assertEquals(2, f74({})); |
| assertEquals(1, f74({a: 0})); |
| function f8(y = (eval("var x = 2"), x)) { return y; } |
| assertEquals(2, f8()); |
| assertEquals(0, f8(0)); |
| |
| function f11(z = eval("var y = 2")) { return y; } |
| assertThrows(f11, ReferenceError); |
| function f12(z = eval("var y = 2"), b = y) {} |
| assertThrows(f12, ReferenceError); |
| function f13(z = eval("var y = 2"), b = eval("y")) {} |
| assertThrows(f13, ReferenceError); |
| |
| function f21(f = () => x) { eval("var x = 2"); return f() } |
| assertEquals(1, f21()); |
| assertEquals(3, f21(() => 3)); |
| function f22(f = () => eval("x")) { eval("var x = 2"); return f() } |
| assertEquals(1, f22()); |
| assertEquals(3, f22(() => 3)); |
| })(); |
| |
| |
| (function TestStrictEvalScoping() { |
| 'use strict'; |
| var x = 1; |
| |
| function f1(y = eval("var x = 2")) { return x; } |
| assertEquals(1, f1()); |
| function f2(y = eval("var x = 2"), z = x) { return z; } |
| assertEquals(1, f2()); |
| assertEquals(1, f2(0)); |
| function f3(y = eval("var x = 2"), z = eval("x")) { return z; } |
| assertEquals(1, f3()); |
| assertEquals(1, f3(0)); |
| function f41({[eval("var x = 2; 'a'")]: w}, z = x) { return z; } |
| assertEquals(1, f41({})); |
| assertEquals(1, f41({a: 0})); |
| function f42({[eval("var x = 2; 'a'")]: w}, z = eval("x")) { return z; } |
| assertEquals(1, f42({})); |
| assertEquals(1, f42({a: 0})); |
| function f43({a: w = eval("var x = 2")}, z = x) { return z; } |
| assertEquals(1, f43({})); |
| assertEquals(1, f43({a: 0})); |
| function f44({a: w = eval("var x = 2")}, z = eval("x")) { return z; } |
| assertEquals(1, f44({})); |
| assertEquals(1, f44({a: 0})); |
| |
| function f5({a = eval("var x = 2"), b = x}) { return b; } |
| assertEquals(1, f5({})); |
| assertEquals(1, f5({a: 0})); |
| function f6({a = eval("var x = 2"), b = eval("x")}) { return b; } |
| assertEquals(1, f6({})); |
| assertEquals(1, f6({a: 0})); |
| function f71({[eval("var x = 2; 'a'")]: w, b = x}) { return b; } |
| assertEquals(1, f71({})); |
| assertEquals(1, f71({a: 0})); |
| function f72({[eval("var x = 2; 'a'")]: w, b = eval("x")}) { return b; } |
| assertEquals(1, f72({})); |
| assertEquals(1, f72({a: 0})); |
| function f73({a: w = eval("var x = 2"), b = x}) { return b; } |
| assertEquals(1, f73({})); |
| assertEquals(1, f73({a: 0})); |
| function f74({a: w = eval("var x = 2"), b = eval("x")}) { return b; } |
| assertEquals(1, f74({})); |
| assertEquals(1, f74({a: 0})); |
| function f8(y = (eval("var x = 2"), x)) { return y; } |
| assertEquals(1, f8()); |
| assertEquals(0, f8(0)); |
| |
| function f11(z = eval("var y = 2")) { return y; } |
| assertThrows(f11, ReferenceError); |
| function f12(z = eval("var y = 2"), b = y) {} |
| assertThrows(f12, ReferenceError); |
| function f13(z = eval("var y = 2"), b = eval("y")) {} |
| assertThrows(f13, ReferenceError); |
| |
| function f21(f = () => x) { eval("var x = 2"); return f() } |
| assertEquals(1, f21()); |
| assertEquals(3, f21(() => 3)); |
| function f22(f = () => eval("x")) { eval("var x = 2"); return f() } |
| assertEquals(1, f22()); |
| assertEquals(3, f22(() => 3)); |
| })(); |
| |
| |
| (function TestParameterTDZ() { |
| function f1(a = x, x) { return a } |
| assertThrows(() => f1(undefined, 4), ReferenceError); |
| assertEquals(4, f1(4, 5)); |
| function f2(a = eval("x"), x) { return a } |
| assertThrows(() => f2(undefined, 4), ReferenceError); |
| assertEquals(4, f2(4, 5)); |
| function f3(a = eval("x"), x) { 'use strict'; return a } |
| assertThrows(() => f3(undefined, 4), ReferenceError); |
| assertEquals(4, f3(4, 5)); |
| function f4(a = eval("'use strict'; x"), x) { return a } |
| assertThrows(() => f4(undefined, 4), ReferenceError); |
| assertEquals(4, f4(4, 5)); |
| |
| function f5(a = () => x, x) { return a() } |
| assertEquals(4, f5(() => 4, 5)); |
| function f6(a = () => eval("x"), x) { return a() } |
| assertEquals(4, f6(() => 4, 5)); |
| function f7(a = () => eval("x"), x) { 'use strict'; return a() } |
| assertEquals(4, f7(() => 4, 5)); |
| function f8(a = () => eval("'use strict'; x"), x) { return a() } |
| assertEquals(4, f8(() => 4, 5)); |
| |
| function f11(a = x, x = 2) { return a } |
| assertThrows(() => f11(), ReferenceError); |
| assertThrows(() => f11(undefined), ReferenceError); |
| assertThrows(() => f11(undefined, 4), ReferenceError); |
| assertEquals(4, f1(4, 5)); |
| function f12(a = eval("x"), x = 2) { return a } |
| assertThrows(() => f12(), ReferenceError); |
| assertThrows(() => f12(undefined), ReferenceError); |
| assertThrows(() => f12(undefined, 4), ReferenceError); |
| assertEquals(4, f12(4, 5)); |
| function f13(a = eval("x"), x = 2) { 'use strict'; return a } |
| assertThrows(() => f13(), ReferenceError); |
| assertThrows(() => f13(undefined), ReferenceError); |
| assertThrows(() => f13(undefined, 4), ReferenceError); |
| assertEquals(4, f13(4, 5)); |
| function f14(a = eval("'use strict'; x"), x = 2) { return a } |
| assertThrows(() => f14(), ReferenceError); |
| assertThrows(() => f14(undefined), ReferenceError); |
| assertThrows(() => f14(undefined, 4), ReferenceError); |
| assertEquals(4, f14(4, 5)); |
| |
| function f34(x = function() { return a }, ...a) { return x()[0] } |
| assertEquals(4, f34(undefined, 4)); |
| function f35(x = () => a, ...a) { return x()[0] } |
| assertEquals(4, f35(undefined, 4)); |
| function f36(x = () => eval("a"), ...a) { return x()[0] } |
| assertEquals(4, f36(undefined, 4)); |
| function f37(x = () => eval("a"), ...a) { 'use strict'; return x()[0] } |
| assertEquals(4, f37(undefined, 4)); |
| function f38(x = () => { 'use strict'; return eval("a") }, ...a) { return x()[0] } |
| assertEquals(4, f38(undefined, 4)); |
| function f39(x = () => eval("'use strict'; a"), ...a) { return x()[0] } |
| assertEquals(4, f39(undefined, 4)); |
| |
| var g34 = (x = function() { return a }, ...a) => { return x()[0] }; |
| assertEquals(4, g34(undefined, 4)); |
| var g35 = (x = () => a, ...a) => { return x()[0] }; |
| assertEquals(4, g35(undefined, 4)); |
| })(); |
| |
| |
| (function TestArgumentsForNonSimpleParameters() { |
| function f1(x = 900) { arguments[0] = 1; return x } |
| assertEquals(9, f1(9)); |
| assertEquals(900, f1()); |
| function f2(x = 1001) { x = 2; return arguments[0] } |
| assertEquals(10, f2(10)); |
| assertEquals(undefined, f2()); |
| }()); |
| |
| |
| (function TestFunctionLength() { |
| // TODO(rossberg): Fix arity. |
| // assertEquals(0, (function(x = 1) {}).length); |
| // assertEquals(0, (function(x = 1, ...a) {}).length); |
| // assertEquals(1, (function(x, y = 1) {}).length); |
| // assertEquals(1, (function(x, y = 1, ...a) {}).length); |
| // assertEquals(2, (function(x, y, z = 1) {}).length); |
| // assertEquals(2, (function(x, y, z = 1, ...a) {}).length); |
| // assertEquals(1, (function(x, y = 1, z) {}).length); |
| // assertEquals(1, (function(x, y = 1, z, ...a) {}).length); |
| // assertEquals(1, (function(x, y = 1, z, v = 2) {}).length); |
| // assertEquals(1, (function(x, y = 1, z, v = 2, ...a) {}).length); |
| })(); |