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| 1 // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --harmony-class-fields --harmony-private-class-fields |
| 6 |
| 7 { |
| 8 class Base { |
| 9 #prop = 0; |
| 10 static m = o => o.#prop; |
| 11 } |
| 12 |
| 13 class Derived extends Base { |
| 14 #prop = 1; |
| 15 static m = o => o.#prop; |
| 16 } |
| 17 |
| 18 let c = new Derived; |
| 19 assertEquals(0, Base.m(c)); |
| 20 assertEquals(1, Derived.m(c)); |
| 21 } |
| 22 |
| 23 { |
| 24 class C { |
| 25 constructor() { |
| 26 assertEquals(0, #a); |
| 27 assertEquals(undefined, #b); |
| 28 } |
| 29 |
| 30 #a = 0; |
| 31 #b; |
| 32 } |
| 33 |
| 34 new C; |
| 35 } |
| 36 |
| 37 { |
| 38 let effects = []; |
| 39 let C = class {}; |
| 40 |
| 41 for (let i = 0; i < 10; ++i) { |
| 42 C = class extends C { |
| 43 #prop = i; |
| 44 m() { |
| 45 if (super.m) super.m(); |
| 46 effects.push(#prop); |
| 47 } |
| 48 } |
| 49 } |
| 50 |
| 51 let c = new C; |
| 52 c.m(); |
| 53 assertArrayEquals([0, 1, 2, 3, 4, 5, 6, 7, 8, 9], effects); |
| 54 } |
| 55 |
| 56 { |
| 57 let getter; |
| 58 |
| 59 class C { |
| 60 static _ = getter = o => o.#a; |
| 61 #a = 0; |
| 62 } |
| 63 |
| 64 let c = new C; |
| 65 assertEquals(0, getter(c)); |
| 66 } |
| 67 |
| 68 { |
| 69 assertThrows(() => class { |
| 70 #prop; |
| 71 static _ = #prop; |
| 72 }, TypeError); |
| 73 |
| 74 assertThrows(() => class { |
| 75 static _ = #prop; |
| 76 #prop; |
| 77 }, TypeError); |
| 78 } |
| 79 |
| 80 { |
| 81 assertThrows(() => new class { |
| 82 _ = #prop; |
| 83 }, ReferenceError); |
| 84 |
| 85 try { |
| 86 new class { |
| 87 _ = #prop; |
| 88 } |
| 89 assertUnreachable(); |
| 90 } catch(e) { |
| 91 assertEquals(e.message, '#prop is not defined'); |
| 92 } |
| 93 } |
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