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| 1 | +// This test is adopted from V8's test suite. |
| 2 | +// See deps/v8/test/mjsunit/instanceof.js in Node.js source repository. |
| 3 | +// |
| 4 | +// Copyright 2008 the V8 project authors. All rights reserved. |
| 5 | +// Redistribution and use in source and binary forms, with or without |
| 6 | +// modification, are permitted provided that the following conditions are |
| 7 | +// met: |
| 8 | +// |
| 9 | +// * Redistributions of source code must retain the above copyright |
| 10 | +// notice, this list of conditions and the following disclaimer. |
| 11 | +// * Redistributions in binary form must reproduce the above |
| 12 | +// copyright notice, this list of conditions and the following |
| 13 | +// disclaimer in the documentation and/or other materials provided |
| 14 | +// with the distribution. |
| 15 | +// * Neither the name of Google Inc. nor the names of its |
| 16 | +// contributors may be used to endorse or promote products derived |
| 17 | +// from this software without specific prior written permission. |
| 18 | +// |
| 19 | +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 20 | +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 21 | +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 22 | +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 23 | +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 24 | +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 25 | +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 26 | +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 27 | +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 28 | +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 29 | +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | +'use strict'; |
| 31 | + |
| 32 | +const common = require('../../common'); |
| 33 | +const addon = require(`./build/${common.buildType}/test_general`); |
| 34 | +const assert = require('assert'); |
| 35 | + |
| 36 | +assert.ok(addon.doInstanceOf({}, Object)); |
| 37 | +assert.ok(addon.doInstanceOf([], Object)); |
| 38 | + |
| 39 | +assert.ok(!addon.doInstanceOf({}, Array)); |
| 40 | +assert.ok(addon.doInstanceOf([], Array)); |
| 41 | + |
| 42 | +function TestChains() { |
| 43 | + const A = {}; |
| 44 | + const B = {}; |
| 45 | + const C = {}; |
| 46 | + Object.setPrototypeOf(B, A); |
| 47 | + Object.setPrototypeOf(C, B); |
| 48 | + |
| 49 | + function F() { } |
| 50 | + F.prototype = A; |
| 51 | + assert.ok(addon.doInstanceOf(C, F)); |
| 52 | + assert.ok(addon.doInstanceOf(B, F)); |
| 53 | + assert.ok(!addon.doInstanceOf(A, F)); |
| 54 | + |
| 55 | + F.prototype = B; |
| 56 | + assert.ok(addon.doInstanceOf(C, F)); |
| 57 | + assert.ok(!addon.doInstanceOf(B, F)); |
| 58 | + assert.ok(!addon.doInstanceOf(A, F)); |
| 59 | + |
| 60 | + F.prototype = C; |
| 61 | + assert.ok(!addon.doInstanceOf(C, F)); |
| 62 | + assert.ok(!addon.doInstanceOf(B, F)); |
| 63 | + assert.ok(!addon.doInstanceOf(A, F)); |
| 64 | +} |
| 65 | + |
| 66 | +TestChains(); |
| 67 | + |
| 68 | +function TestExceptions() { |
| 69 | + function F() { } |
| 70 | + const items = [ 1, new Number(42), |
| 71 | + true, |
| 72 | + 'string', new String('hest'), |
| 73 | + {}, [], |
| 74 | + F, new F(), |
| 75 | + Object, String ]; |
| 76 | + |
| 77 | + let exceptions = 0; |
| 78 | + let instanceofs = 0; |
| 79 | + |
| 80 | + for (let i = 0; i < items.length; i++) { |
| 81 | + for (let j = 0; j < items.length; j++) { |
| 82 | + try { |
| 83 | + if (addon.doInstanceOf(items[i], items[j])) instanceofs++; |
| 84 | + } catch (e) { |
| 85 | + assert.ok(addon.doInstanceOf(e, TypeError)); |
| 86 | + exceptions++; |
| 87 | + } |
| 88 | + } |
| 89 | + } |
| 90 | + assert.strictEqual(instanceofs, 10); |
| 91 | + assert.strictEqual(exceptions, 88); |
| 92 | + |
| 93 | + // Make sure to throw an exception if the function prototype |
| 94 | + // isn't a proper JavaScript object. |
| 95 | + function G() { } |
| 96 | + G.prototype = undefined; |
| 97 | + assert.throws(function() { |
| 98 | + addon.doInstanceOf({}, G); |
| 99 | + }, Error); |
| 100 | +} |
| 101 | + |
| 102 | +TestExceptions(); |
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