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require-await.js
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require-await.js
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/**
* @fileoverview Tests for require-await rule.
* @author Toru Nagashima
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const rule = require("../../../lib/rules/require-await"),
{ RuleTester } = require("../../../lib/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
const ruleTester = new RuleTester({
parserOptions: {
ecmaVersion: 2018
}
});
ruleTester.run("require-await", rule, {
valid: [
"async function foo() { await doSomething() }",
"(async function() { await doSomething() })",
"async () => { await doSomething() }",
"async () => await doSomething()",
"({ async foo() { await doSomething() } })",
"class A { async foo() { await doSomething() } }",
"(class { async foo() { await doSomething() } })",
"async function foo() { await (async () => { await doSomething() }) }",
// empty functions are ok.
"async function foo() {}",
"async () => {}",
// normal functions are ok.
"function foo() { doSomething() }",
// for-await-of
"async function foo() { for await (x of xs); }",
// global await
{
code: "await foo()",
parser: require.resolve("../../fixtures/parsers/typescript-parsers/global-await")
},
{
code: `
for await (let num of asyncIterable) {
console.log(num);
}
`,
parser: require.resolve("../../fixtures/parsers/typescript-parsers/global-for-await-of")
},
{
code: "async function* run() { yield * anotherAsyncGenerator() }",
parserOptions: { ecmaVersion: 9 }
},
{
code: `async function* run() {
await new Promise(resolve => setTimeout(resolve, 100));
yield 'Hello';
console.log('World');
}
`,
parserOptions: { ecmaVersion: 9 }
},
{
code: "async function* run() { }",
parserOptions: { ecmaVersion: 9 }
},
{
code: "const foo = async function *(){}",
parserOptions: { ecmaVersion: 9 }
},
{
code: 'const foo = async function *(){ console.log("bar") }',
parserOptions: { ecmaVersion: 9 }
},
{
code: 'async function* run() { console.log("bar") }',
parserOptions: { ecmaVersion: 9 }
}
],
invalid: [
{
code: "async function foo() { doSomething() }",
errors: [{
messageId: "missingAwait",
data: { name: "Async function 'foo'" }
}]
},
{
code: "(async function() { doSomething() })",
errors: [{
messageId: "missingAwait",
data: { name: "Async function" }
}]
},
{
code: "async () => { doSomething() }",
errors: [{
messageId: "missingAwait",
data: { name: "Async arrow function" }
}]
},
{
code: "async () => doSomething()",
errors: [{
messageId: "missingAwait",
data: { name: "Async arrow function" }
}]
},
{
code: "({ async foo() { doSomething() } })",
errors: [{
messageId: "missingAwait",
data: { name: "Async method 'foo'" }
}]
},
{
code: "class A { async foo() { doSomething() } }",
errors: [{
messageId: "missingAwait",
data: { name: "Async method 'foo'" }
}]
},
{
code: "(class { async foo() { doSomething() } })",
errors: [{
messageId: "missingAwait",
data: { name: "Async method 'foo'" }
}]
},
{
code: "(class { async ''() { doSomething() } })",
errors: [{
messageId: "missingAwait",
data: { name: "Async method ''" }
}]
},
{
code: "async function foo() { async () => { await doSomething() } }",
errors: [{
messageId: "missingAwait",
data: { name: "Async function 'foo'" }
}]
},
{
code: "async function foo() { await (async () => { doSomething() }) }",
errors: [{
messageId: "missingAwait",
data: { name: "Async arrow function" }
}]
}
]
});