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| 1 | +import assert from 'node:assert/strict'; |
| 2 | +import type { ExecResult } from '@agent-device/host-kit/command'; |
| 3 | +import { afterEach, test } from 'vitest'; |
| 4 | +import { executeRunnerExchange } from '../runner-exchange.ts'; |
| 5 | +import { RunnerCommandAccounting, type RunnerSession } from '../runner-session-types.ts'; |
| 6 | +import { IOS_SIMULATOR } from './device-fixtures.ts'; |
| 7 | +import { startFakeRunnerServer, type FakeRunnerServer } from './fake-runner-server.ts'; |
| 8 | + |
| 9 | +let server: FakeRunnerServer | undefined; |
| 10 | + |
| 11 | +afterEach(async () => { |
| 12 | + await server?.close(); |
| 13 | + server = undefined; |
| 14 | +}); |
| 15 | + |
| 16 | +function sessionFor(port: number): RunnerSession { |
| 17 | + return { |
| 18 | + sessionId: `exchange:${port}`, |
| 19 | + device: IOS_SIMULATOR, |
| 20 | + deviceId: IOS_SIMULATOR.id, |
| 21 | + port, |
| 22 | + xctestrunPath: '/tmp/fake.xctestrun', |
| 23 | + jsonPath: '/tmp/fake.json', |
| 24 | + testPromise: new Promise<ExecResult>(() => {}), |
| 25 | + child: { pid: process.pid, exitCode: null }, |
| 26 | + state: 'ready', |
| 27 | + commandCharges: new RunnerCommandAccounting(), |
| 28 | + }; |
| 29 | +} |
| 30 | + |
| 31 | +test('the exchange preflights a mutation and settles only its answer', async () => { |
| 32 | + server = await startFakeRunnerServer({ |
| 33 | + uptime: [{ kind: 'ok', data: { uptimeMs: 5 } }], |
| 34 | + tap: [{ kind: 'ok', data: { tapped: true } }], |
| 35 | + }); |
| 36 | + const session = sessionFor(server.port); |
| 37 | + const invalidations: string[] = []; |
| 38 | + |
| 39 | + const result = await executeRunnerExchange( |
| 40 | + IOS_SIMULATOR, |
| 41 | + session, |
| 42 | + { command: 'tap', x: 10, y: 10, appBundleId: 'com.example.app' }, |
| 43 | + undefined, |
| 44 | + 10_000, |
| 45 | + async (reason) => { |
| 46 | + invalidations.push(reason); |
| 47 | + }, |
| 48 | + ); |
| 49 | + |
| 50 | + assert.deepEqual(result, { tapped: true }); |
| 51 | + assert.deepEqual( |
| 52 | + server.requests.map(({ command }) => command), |
| 53 | + ['uptime', 'tap'], |
| 54 | + ); |
| 55 | + assert.equal(session.commandCharges.hasOutstandingCharges, false); |
| 56 | + assert.equal(session.lastHealthyMutation?.appBundleId, 'com.example.app'); |
| 57 | + assert.deepEqual(invalidations, []); |
| 58 | +}); |
| 59 | + |
| 60 | +test('the readiness probe preserves its main-thread busy report when the command omits it', async () => { |
| 61 | + server = await startFakeRunnerServer({ |
| 62 | + uptime: [{ kind: 'ok', data: { runnerMainThreadBusy: true } }], |
| 63 | + tap: [{ kind: 'ok', data: { tapped: true } }], |
| 64 | + }); |
| 65 | + const session = sessionFor(server.port); |
| 66 | + |
| 67 | + await executeRunnerExchange( |
| 68 | + IOS_SIMULATOR, |
| 69 | + session, |
| 70 | + { command: 'tap', x: 10, y: 10, appBundleId: 'com.example.app' }, |
| 71 | + undefined, |
| 72 | + 10_000, |
| 73 | + async () => {}, |
| 74 | + ); |
| 75 | + |
| 76 | + assert.equal(session.runnerMainThreadBusy, true); |
| 77 | +}); |
| 78 | + |
| 79 | +test.each(['activate', 'terminate', 'targetReset'] as const)( |
| 80 | + 'a starting runner sends exempt %s without a readiness preflight', |
| 81 | + async (command) => { |
| 82 | + server = await startFakeRunnerServer([{ kind: 'ok', data: {} }]); |
| 83 | + const session = sessionFor(server.port); |
| 84 | + session.state = 'starting'; |
| 85 | + |
| 86 | + await executeRunnerExchange( |
| 87 | + IOS_SIMULATOR, |
| 88 | + session, |
| 89 | + { command, appBundleId: 'com.example.app' }, |
| 90 | + undefined, |
| 91 | + 10_000, |
| 92 | + async () => {}, |
| 93 | + ); |
| 94 | + |
| 95 | + assert.deepEqual( |
| 96 | + server.requests.map((request) => request.command), |
| 97 | + [command], |
| 98 | + ); |
| 99 | + }, |
| 100 | +); |
| 101 | + |
| 102 | +test('the exchange awaits owner invalidation before returning a fatal answer', async () => { |
| 103 | + server = await startFakeRunnerServer({ |
| 104 | + snapshot: [{ kind: 'ok', data: { runnerFatal: true, runnerFatalReason: 'ax_failed' } }], |
| 105 | + }); |
| 106 | + const session = sessionFor(server.port); |
| 107 | + session.lastHealthyMutation = { atMs: Date.now(), appBundleId: 'com.example.app' }; |
| 108 | + let signalInvalidationStarted!: () => void; |
| 109 | + const invalidationStarted = new Promise<void>((resolve) => { |
| 110 | + signalInvalidationStarted = resolve; |
| 111 | + }); |
| 112 | + let releaseInvalidation!: () => void; |
| 113 | + const invalidationGate = new Promise<void>((resolve) => { |
| 114 | + releaseInvalidation = resolve; |
| 115 | + }); |
| 116 | + let settled = false; |
| 117 | + |
| 118 | + const exchange = executeRunnerExchange( |
| 119 | + IOS_SIMULATOR, |
| 120 | + session, |
| 121 | + { command: 'snapshot', appBundleId: 'com.example.app' }, |
| 122 | + undefined, |
| 123 | + 10_000, |
| 124 | + async (reason) => { |
| 125 | + assert.equal(reason, 'ax_failed'); |
| 126 | + signalInvalidationStarted(); |
| 127 | + await invalidationGate; |
| 128 | + }, |
| 129 | + ).finally(() => { |
| 130 | + settled = true; |
| 131 | + }); |
| 132 | + |
| 133 | + try { |
| 134 | + await invalidationStarted; |
| 135 | + await new Promise<void>((resolve) => setImmediate(resolve)); |
| 136 | + assert.equal(settled, false); |
| 137 | + } finally { |
| 138 | + releaseInvalidation(); |
| 139 | + } |
| 140 | + const result = await exchange; |
| 141 | + |
| 142 | + assert.equal(result.runnerFatal, true); |
| 143 | + assert.equal(session.lastHealthyMutation, undefined); |
| 144 | + assert.equal(session.commandCharges.hasOutstandingCharges, false); |
| 145 | +}); |
| 146 | + |
| 147 | +test('the exchange awaits owner invalidation before throwing a fatal runner error', async () => { |
| 148 | + server = await startFakeRunnerServer({ |
| 149 | + snapshot: [{ kind: 'runnerError', code: 'RUNNER_WEDGED', message: 'runner wedged' }], |
| 150 | + }); |
| 151 | + const session = sessionFor(server.port); |
| 152 | + let signalInvalidationStarted!: () => void; |
| 153 | + const invalidationStarted = new Promise<void>((resolve) => { |
| 154 | + signalInvalidationStarted = resolve; |
| 155 | + }); |
| 156 | + let releaseInvalidation!: () => void; |
| 157 | + const invalidationGate = new Promise<void>((resolve) => { |
| 158 | + releaseInvalidation = resolve; |
| 159 | + }); |
| 160 | + let settled = false; |
| 161 | + |
| 162 | + const exchange = executeRunnerExchange( |
| 163 | + IOS_SIMULATOR, |
| 164 | + session, |
| 165 | + { command: 'snapshot', appBundleId: 'com.example.app' }, |
| 166 | + undefined, |
| 167 | + 10_000, |
| 168 | + async (reason) => { |
| 169 | + assert.equal(reason, 'runner_main_thread_wedged'); |
| 170 | + signalInvalidationStarted(); |
| 171 | + await invalidationGate; |
| 172 | + }, |
| 173 | + ).finally(() => { |
| 174 | + settled = true; |
| 175 | + }); |
| 176 | + void exchange.catch(() => {}); |
| 177 | + |
| 178 | + try { |
| 179 | + await invalidationStarted; |
| 180 | + await new Promise<void>((resolve) => setImmediate(resolve)); |
| 181 | + assert.equal(settled, false); |
| 182 | + } finally { |
| 183 | + releaseInvalidation(); |
| 184 | + } |
| 185 | + await assert.rejects(exchange); |
| 186 | +}); |
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