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40 lines
1.3 KiB
TypeScript
40 lines
1.3 KiB
TypeScript
import assert from 'node:assert/strict'
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import { test } from 'node:test'
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import { isInstanceLaunching, launchOnce } from './instance-launch-state.ts'
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test('launches different instances concurrently and coalesces repeated pending clicks', async () => {
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let finishA!: (value: string) => void
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let starts = 0
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const first = launchOnce('a', () => {
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starts++
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return new Promise<string>((resolve) => {
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finishA = resolve
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})
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})
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assert.equal(
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launchOnce('a', async () => 'unexpected duplicate'),
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first,
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)
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assert.equal(isInstanceLaunching('a'), true)
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assert.equal(isInstanceLaunching('b'), false)
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assert.equal(await launchOnce('b', async () => 'b started'), 'b started')
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assert.equal(isInstanceLaunching('a'), true)
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finishA('a started')
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assert.equal(await first, 'a started')
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assert.equal(starts, 1)
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assert.equal(isInstanceLaunching('a'), false)
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assert.equal(await launchOnce('a', async () => 'second window'), 'second window')
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})
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test('failed launch releases only its own pending state and can retry', async () => {
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await assert.rejects(
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launchOnce('failed', async () => {
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throw new Error('launch failed')
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}),
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/launch failed/,
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)
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assert.equal(isInstanceLaunching('failed'), false)
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assert.equal(await launchOnce('failed', async () => 'retry'), 'retry')
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})
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