throwing-options.any.js (1799B)
1 // META: global=window,worker,shadowrealm 2 'use strict'; 3 4 class ThrowingOptions { 5 constructor(whatShouldThrow) { 6 this.whatShouldThrow = whatShouldThrow; 7 this.touched = []; 8 } 9 10 get preventClose() { 11 this.maybeThrow('preventClose'); 12 return false; 13 } 14 15 get preventAbort() { 16 this.maybeThrow('preventAbort'); 17 return false; 18 } 19 20 get preventCancel() { 21 this.maybeThrow('preventCancel'); 22 return false; 23 } 24 25 get signal() { 26 this.maybeThrow('signal'); 27 return undefined; 28 } 29 30 maybeThrow(forWhat) { 31 this.touched.push(forWhat); 32 if (this.whatShouldThrow === forWhat) { 33 throw new Error(this.whatShouldThrow); 34 } 35 } 36 } 37 38 const checkOrder = ['preventAbort', 'preventCancel', 'preventClose', 'signal']; 39 40 for (let i = 0; i < checkOrder.length; ++i) { 41 const whatShouldThrow = checkOrder[i]; 42 const whatShouldBeTouched = checkOrder.slice(0, i + 1); 43 44 promise_test(t => { 45 const options = new ThrowingOptions(whatShouldThrow); 46 return promise_rejects_js( 47 t, Error, 48 new ReadableStream().pipeTo(new WritableStream(), options), 49 'pipeTo should reject') 50 .then(() => assert_array_equals( 51 options.touched, whatShouldBeTouched, 52 'options should be touched in the right order')); 53 }, `pipeTo should stop after getting ${whatShouldThrow} throws`); 54 55 test(() => { 56 const options = new ThrowingOptions(whatShouldThrow); 57 assert_throws_js( 58 Error, 59 () => new ReadableStream().pipeThrough(new TransformStream(), options), 60 'pipeThrough should throw'); 61 assert_array_equals( 62 options.touched, whatShouldBeTouched, 63 'options should be touched in the right order'); 64 }, `pipeThrough should stop after getting ${whatShouldThrow} throws`); 65 }