File size: 7,584 Bytes
f0634fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 | import { afterEach, beforeEach, describe, expect, it } from 'vitest';
import { DisposableStore } from '#/_base/di/lifecycle';
import {
type ITaskHandle,
type IDeferredHandle,
type TaskState,
TaskCancelledError,
} from '#/app/task/task';
import { TaskService } from '#/app/task/taskService';
describe('TaskService', () => {
let disposables: DisposableStore;
let svc: TaskService;
beforeEach(() => {
disposables = new DisposableStore();
svc = disposables.add(new TaskService());
});
afterEach(() => disposables.dispose());
describe('run()', () => {
it('transitions running → completed on success', async () => {
const handle = svc.run(async () => 42);
expect(handle.state).toBe('running');
const result = await handle.result;
expect(result).toBe(42);
expect(handle.state).toBe('completed');
});
it('transitions running → failed when fn rejects', async () => {
const handle = svc.run(async () => {
throw new Error('boom');
});
expect(handle.state).toBe('running');
await expect(handle.result).rejects.toThrow('boom');
expect(handle.state).toBe('failed');
});
it('delivers output to pre-registered listeners', async () => {
const chunks: string[] = [];
const handle = svc.run(async (_signal, output) => {
await Promise.resolve();
output('line1');
output('line2');
return 'done';
});
handle.onDidOutput((data) => chunks.push(data));
await handle.result;
expect(chunks).toEqual(['line1', 'line2']);
});
it('state is running immediately after run()', () => {
const handle = svc.run(async () => {
await new Promise((r) => setTimeout(r, 100));
});
expect(handle.state).toBe('running');
handle.cancel();
});
});
describe('defer()', () => {
it('starts in pending state', () => {
const handle = svc.defer<number>();
expect(handle.state).toBe('pending');
});
it('resolve settles to completed', async () => {
const handle = svc.defer<string>();
handle.resolve('ok');
expect(handle.state).toBe('completed');
await expect(handle.result).resolves.toBe('ok');
});
it('reject settles to failed', async () => {
const handle = svc.defer<string>();
handle.reject(new Error('fail'));
expect(handle.state).toBe('failed');
await expect(handle.result).rejects.toThrow('fail');
});
});
describe('cancellation', () => {
it('run() cancel aborts the signal and settles as cancelled', async () => {
let signalAborted = false;
const handle = svc.run(async (signal) => {
await new Promise<void>((resolve) => {
signal.addEventListener('abort', () => {
signalAborted = true;
resolve();
});
});
});
handle.cancel();
await expect(handle.result).rejects.toThrow(TaskCancelledError);
expect(handle.state).toBe('cancelled');
expect(signalAborted).toBe(true);
});
it('defer() cancel settles to cancelled', async () => {
const handle = svc.defer<number>();
handle.cancel();
expect(handle.state).toBe('cancelled');
await expect(handle.result).rejects.toThrow(TaskCancelledError);
});
it('cancel on terminal handle is a no-op', async () => {
const handle = svc.defer<number>();
handle.resolve(1);
expect(handle.state).toBe('completed');
handle.cancel();
expect(handle.state).toBe('completed');
await expect(handle.result).resolves.toBe(1);
});
});
describe('disposal', () => {
it('dispose cancels a running task', async () => {
const handle = svc.run(async (signal) => {
await new Promise<void>((resolve) => {
signal.addEventListener('abort', () => resolve());
});
});
handle.dispose();
expect(handle.state).toBe('cancelled');
});
it('dispose cancels a pending deferred', () => {
const handle = svc.defer<number>();
handle.dispose();
expect(handle.state).toBe('cancelled');
});
it('dispose on a settled handle is safe', async () => {
const handle = svc.defer<number>();
handle.resolve(42);
await handle.result;
expect(() => handle.dispose()).not.toThrow();
expect(handle.state).toBe('completed');
});
});
describe('onDidChangeState', () => {
it('fires on each transition for run()', async () => {
const states: TaskState[] = [];
const handle = svc.run(async () => 'ok');
handle.onDidChangeState((s) => states.push(s));
await handle.result;
expect(states).toEqual(['completed']);
});
it('resolve/reject after settlement is ignored on deferred', () => {
const states: TaskState[] = [];
const handle = svc.defer<number>();
handle.onDidChangeState((s) => states.push(s));
handle.resolve(1);
handle.reject(new Error('nope'));
handle.resolve(2);
expect(states).toEqual(['completed']);
expect(handle.state).toBe('completed');
});
});
describe('consumption patterns', () => {
it('resolves the value and completes when awaiting handle.result', async () => {
const handle = svc.run(async () => 'value');
const result = await handle.result;
expect(result).toBe('value');
expect(handle.state).toBe('completed');
});
it('resolves the value when a handle is tracked by id and awaited later', async () => {
const registry = new Map<string, ITaskHandle>();
const handle = svc.run(async () => {
await new Promise((r) => setTimeout(r, 10));
return 'async-result';
});
registry.set(handle.id, handle);
const retrieved = registry.get(handle.id)!;
const result = await retrieved.result;
expect(result).toBe('async-result');
});
it('lets a detach signal win the race while the task keeps running', async () => {
const detach = new Promise<'detach'>((r) => setTimeout(() => r('detach'), 5));
const handle = svc.run(async (signal) => {
await new Promise<void>((resolve) => {
const timer = setTimeout(resolve, 1000);
signal.addEventListener('abort', () => {
clearTimeout(timer);
resolve();
});
});
return 'done';
});
const winner = await Promise.race([
handle.result.then((v) => ({ kind: 'done' as const, value: v })),
detach.then(() => ({ kind: 'detach' as const })),
]);
expect(winner.kind).toBe('detach');
expect(handle.state).toBe('running');
handle.cancel();
});
it('resolves a deferred handle settled from outside the awaiting turn', async () => {
const handle = svc.defer<string>();
setTimeout(() => handle.resolve('from-outside'), 10);
const result = await handle.result;
expect(result).toBe('from-outside');
expect(handle.state).toBe('completed');
});
});
describe('IDs', () => {
it('handles have unique IDs', () => {
const ids = new Set<string>();
for (let i = 0; i < 10; i++) {
const h = svc.defer<void>();
expect(ids.has(h.id)).toBe(false);
ids.add(h.id);
h.cancel();
}
});
it('IDs follow task-N pattern', () => {
const h1 = svc.defer<void>();
const h2 = svc.run(async () => {});
expect(h1.id).toMatch(/^task-\d+$/);
expect(h2.id).toMatch(/^task-\d+$/);
h1.cancel();
});
});
});
|