custom-primitive.js (1466B)
1 // |reftest| async 2 // Copyright (C) 2018 Leo Balter. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 /*--- 5 description: > 6 Import a custom toString and valueOf bindings 7 esid: sec-finishdynamicimport 8 info: | 9 Runtime Semantics: FinishDynamicImport ( referencingScriptOrModule, specifier, promiseCapability, completion ) 10 11 2. Otherwise, 12 a. Assert: completion is a normal completion and completion.[[Value]] is undefined. 13 b. Let moduleRecord be ! HostResolveImportedModule(referencingScriptOrModule, specifier). 14 c. Assert: Evaluate has already been invoked on moduleRecord and successfully completed. 15 d. Let namespace be GetModuleNamespace(moduleRecord). 16 ... 17 f. Otherwise, perform ! Call(promiseCapability.[[Resolve]], undefined, « namespace.[[Value]] »). 18 flags: [async] 19 features: [dynamic-import] 20 includes: [asyncHelpers.js] 21 ---*/ 22 23 async function fn() { 24 const str = await import('./custom-tostring_FIXTURE.js'); 25 const value = await import('./custom-valueof_FIXTURE.js'); 26 27 assert.sameValue(String(str), '1612', 'namespace uses the imported toString'); 28 assert.sameValue(Number(str), 1612, 'namespace fallsback to toString as its prototype is null'); 29 30 assert.sameValue(Number(value), 42, 'namespace uses the imported valueOf'); 31 assert.sameValue(String(value), '42', 'namespace fallsback to valueOf as its prototype is null'); 32 } 33 34 asyncTest(fn);