1'use strict'; 2const common = require('../../common'); 3const assert = require('assert'); 4 5const getterOnlyErrorRE = 6 /^TypeError: Cannot set property .* of #<.*> which has only a getter$/; 7 8// Testing api calls for a constructor that defines properties 9const TestConstructor = require(`./build/${common.buildType}/test_constructor`); 10const test_object = new TestConstructor(); 11 12assert.strictEqual(test_object.echo('hello'), 'hello'); 13 14test_object.readwriteValue = 1; 15assert.strictEqual(test_object.readwriteValue, 1); 16test_object.readwriteValue = 2; 17assert.strictEqual(test_object.readwriteValue, 2); 18 19assert.throws(() => { test_object.readonlyValue = 3; }, 20 /^TypeError: Cannot assign to read only property 'readonlyValue' of object '#<MyObject>'$/); 21 22assert.ok(test_object.hiddenValue); 23 24// Properties with napi_enumerable attribute should be enumerable. 25const propertyNames = []; 26for (const name in test_object) { 27 propertyNames.push(name); 28} 29assert.ok(propertyNames.includes('echo')); 30assert.ok(propertyNames.includes('readwriteValue')); 31assert.ok(propertyNames.includes('readonlyValue')); 32assert.ok(!propertyNames.includes('hiddenValue')); 33assert.ok(!propertyNames.includes('readwriteAccessor1')); 34assert.ok(!propertyNames.includes('readwriteAccessor2')); 35assert.ok(!propertyNames.includes('readonlyAccessor1')); 36assert.ok(!propertyNames.includes('readonlyAccessor2')); 37 38// The napi_writable attribute should be ignored for accessors. 39test_object.readwriteAccessor1 = 1; 40assert.strictEqual(test_object.readwriteAccessor1, 1); 41assert.strictEqual(test_object.readonlyAccessor1, 1); 42assert.throws(() => { test_object.readonlyAccessor1 = 3; }, getterOnlyErrorRE); 43test_object.readwriteAccessor2 = 2; 44assert.strictEqual(test_object.readwriteAccessor2, 2); 45assert.strictEqual(test_object.readonlyAccessor2, 2); 46assert.throws(() => { test_object.readonlyAccessor2 = 3; }, getterOnlyErrorRE); 47 48// Validate that static properties are on the class as opposed 49// to the instance 50assert.strictEqual(TestConstructor.staticReadonlyAccessor1, 10); 51assert.strictEqual(test_object.staticReadonlyAccessor1, undefined); 52 53// Verify that passing NULL to napi_define_class() results in the correct 54// error. 55assert.deepStrictEqual(TestConstructor.TestDefineClass(), { 56 envIsNull: 'Invalid argument', 57 nameIsNull: 'Invalid argument', 58 cbIsNull: 'Invalid argument', 59 cbDataIsNull: 'napi_ok', 60 propertiesIsNull: 'Invalid argument', 61 resultIsNull: 'Invalid argument' 62}); 63