named-yield-star-async-next.js (7214B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/async-generators/yield-star-async-next.case 4 // - src/async-generators/default/async-expression-named.template 5 /*--- 6 description: Execution order for yield* with async iterator and next() (Named async generator expression) 7 esid: prod-AsyncGeneratorExpression 8 features: [Symbol.iterator, async-iteration, Symbol.asyncIterator] 9 flags: [generated, async] 10 info: | 11 Async Generator Function Definitions 12 13 AsyncGeneratorExpression : 14 async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { 15 AsyncGeneratorBody } 16 17 18 19 ---*/ 20 var log = []; 21 var obj = { 22 get [Symbol.iterator]() { 23 log.push({ name: "get [Symbol.iterator]" }); 24 }, 25 get [Symbol.asyncIterator]() { 26 log.push({ 27 name: "get [Symbol.asyncIterator]", 28 thisValue: this 29 }); 30 return function() { 31 log.push({ 32 name: "call [Symbol.asyncIterator]", 33 thisValue: this, 34 args: [...arguments] 35 }); 36 var nextCount = 0; 37 return { 38 name: "asyncIterator", 39 get next() { 40 log.push({ 41 name: "get next", 42 thisValue: this 43 }); 44 return function() { 45 log.push({ 46 name: "call next", 47 thisValue: this, 48 args: [...arguments] 49 }); 50 51 nextCount++; 52 if (nextCount == 1) { 53 return { 54 name: "next-promise-1", 55 get then() { 56 log.push({ 57 name: "get next then (1)", 58 thisValue: this 59 }); 60 return function(resolve) { 61 log.push({ 62 name: "call next then (1)", 63 thisValue: this, 64 args: [...arguments] 65 }); 66 67 resolve({ 68 name: "next-result-1", 69 get value() { 70 log.push({ 71 name: "get next value (1)", 72 thisValue: this 73 }); 74 return "next-value-1"; 75 }, 76 get done() { 77 log.push({ 78 name: "get next done (1)", 79 thisValue: this 80 }); 81 return false; 82 } 83 }); 84 }; 85 } 86 }; 87 } 88 89 return { 90 name: "next-promise-2", 91 get then() { 92 log.push({ 93 name: "get next then (2)", 94 thisValue: this 95 }); 96 return function(resolve) { 97 log.push({ 98 name: "call next then (2)", 99 thisValue: this, 100 args: [...arguments] 101 }); 102 103 resolve({ 104 name: "next-result-2", 105 get value() { 106 log.push({ 107 name: "get next value (2)", 108 thisValue: this 109 }); 110 return "next-value-2"; 111 }, 112 get done() { 113 log.push({ 114 name: "get next done (2)", 115 thisValue: this 116 }); 117 return true; 118 } 119 }); 120 }; 121 } 122 }; 123 }; 124 } 125 }; 126 }; 127 } 128 }; 129 130 131 132 var callCount = 0; 133 134 var gen = async function *g() { 135 callCount += 1; 136 log.push({ name: "before yield*" }); 137 var v = yield* obj; 138 log.push({ 139 name: "after yield*", 140 value: v 141 }); 142 return "return-value"; 143 144 }; 145 146 var iter = gen(); 147 148 assert.sameValue(log.length, 0, "log.length"); 149 150 iter.next("next-arg-1").then(v => { 151 assert.sameValue(log[0].name, "before yield*"); 152 153 assert.sameValue(log[1].name, "get [Symbol.asyncIterator]"); 154 assert.sameValue(log[1].thisValue, obj, "get [Symbol.asyncIterator] thisValue"); 155 156 assert.sameValue(log[2].name, "call [Symbol.asyncIterator]"); 157 assert.sameValue(log[2].thisValue, obj, "[Symbol.asyncIterator] thisValue"); 158 assert.sameValue(log[2].args.length, 0, "[Symbol.asyncIterator] args.length"); 159 160 assert.sameValue(log[3].name, "get next"); 161 assert.sameValue(log[3].thisValue.name, "asyncIterator", "get next thisValue"); 162 163 assert.sameValue(log[4].name, "call next"); 164 assert.sameValue(log[4].thisValue.name, "asyncIterator", "next thisValue"); 165 assert.sameValue(log[4].args.length, 1, "next args.length"); 166 assert.sameValue(log[4].args[0], undefined, "next args[0]"); 167 168 assert.sameValue(log[5].name, "get next then (1)"); 169 assert.sameValue(log[5].thisValue.name, "next-promise-1", "get next then thisValue"); 170 171 assert.sameValue(log[6].name, "call next then (1)"); 172 assert.sameValue(log[6].thisValue.name, "next-promise-1", "next then thisValue"); 173 assert.sameValue(log[6].args.length, 2, "next then args.length"); 174 assert.sameValue(typeof log[6].args[0], "function", "next then args[0]"); 175 assert.sameValue(typeof log[6].args[1], "function", "next then args[1]"); 176 177 assert.sameValue(log[7].name, "get next done (1)"); 178 assert.sameValue(log[7].thisValue.name, "next-result-1", "get next done thisValue"); 179 180 assert.sameValue(log[8].name, "get next value (1)"); 181 assert.sameValue(log[8].thisValue.name, "next-result-1", "get next value thisValue"); 182 183 assert.sameValue(v.value, "next-value-1"); 184 assert.sameValue(v.done, false); 185 186 assert.sameValue(log.length, 9, "log.length"); 187 188 iter.next("next-arg-2").then(v => { 189 assert.sameValue(log[9].name, "call next"); 190 assert.sameValue(log[9].thisValue.name, "asyncIterator", "next thisValue"); 191 assert.sameValue(log[9].args.length, 1, "next args.length"); 192 assert.sameValue(log[9].args[0], "next-arg-2", "next args[0]"); 193 194 assert.sameValue(log[10].name, "get next then (2)"); 195 assert.sameValue(log[10].thisValue.name, "next-promise-2", "get next then thisValue"); 196 197 assert.sameValue(log[11].name, "call next then (2)"); 198 assert.sameValue(log[11].thisValue.name, "next-promise-2", "next then thisValue"); 199 assert.sameValue(log[11].args.length, 2, "next then args.length"); 200 assert.sameValue(typeof log[11].args[0], "function", "next then args[0]"); 201 assert.sameValue(typeof log[11].args[1], "function", "next then args[1]"); 202 203 assert.sameValue(log[12].name, "get next done (2)"); 204 assert.sameValue(log[12].thisValue.name, "next-result-2", "get next done thisValue"); 205 206 assert.sameValue(log[13].name, "get next value (2)"); 207 assert.sameValue(log[13].thisValue.name, "next-result-2", "get next value thisValue"); 208 209 assert.sameValue(log[14].name, "after yield*"); 210 assert.sameValue(log[14].value, "next-value-2"); 211 212 assert.sameValue(v.value, "return-value"); 213 assert.sameValue(v.done, true); 214 215 assert.sameValue(log.length, 15, "log.length"); 216 }).then($DONE, $DONE); 217 }).catch($DONE); 218 219 assert.sameValue(callCount, 1);