properties.any.js (1440B)
1 // META: global=window,worker,shadowrealm 2 'use strict'; 3 4 const sinkMethods = { 5 start: { 6 length: 1, 7 trigger: () => Promise.resolve() 8 }, 9 write: { 10 length: 2, 11 trigger: writer => writer.write() 12 }, 13 close: { 14 length: 0, 15 trigger: writer => writer.close() 16 }, 17 abort: { 18 length: 1, 19 trigger: writer => writer.abort() 20 } 21 }; 22 23 for (const method in sinkMethods) { 24 const { length, trigger } = sinkMethods[method]; 25 26 // Some semantic tests of how sink methods are called can be found in general.js, as well as in the test files 27 // specific to each method. 28 promise_test(() => { 29 let argCount; 30 const ws = new WritableStream({ 31 [method](...args) { 32 argCount = args.length; 33 } 34 }); 35 return Promise.resolve(trigger(ws.getWriter())).then(() => { 36 assert_equals(argCount, length, `${method} should be called with ${length} arguments`); 37 }); 38 }, `sink method ${method} should be called with the right number of arguments`); 39 40 promise_test(() => { 41 let methodWasCalled = false; 42 function Sink() {} 43 Sink.prototype = { 44 [method]() { 45 methodWasCalled = true; 46 } 47 }; 48 const ws = new WritableStream(new Sink()); 49 return Promise.resolve(trigger(ws.getWriter())).then(() => { 50 assert_true(methodWasCalled, `${method} should be called`); 51 }); 52 }, `sink method ${method} should be called even when it's located on the prototype chain`); 53 }