import { expect, it } from "@effect/vitest";import { EnvironmentId, PreviewAutomationClientDisconnectedError, PreviewAutomationInvalidSelectorError, PreviewAutomationMalformedResponseError, PreviewAutomationNoFocusedOwnerError, ProviderInstanceId, ThreadId, type PreviewAutomationOwner,} from "@t3tools/contracts";import * as Effect from "effect/Effect";import * as Fiber from "effect/Fiber";import * as Stream from "effect/Stream"; import * as PreviewAutomationBroker from "./PreviewAutomationBroker.ts"; const scope = { environmentId: EnvironmentId.make("environment-1"), threadId: ThreadId.make("thread-1"), providerSessionId: "provider-session-1", providerInstanceId: ProviderInstanceId.make("codex"), capabilities: new Set(["preview"] as const), issuedAt: 1, expiresAt: 2,}; const makeOwner = (overrides: Partial<PreviewAutomationOwner> = {}): PreviewAutomationOwner => ({ clientId: "client-1", environmentId: scope.environmentId, threadId: scope.threadId, tabId: null, visible: false, supportsAutomation: true, focusedAt: "2026-06-11T00:00:00.000Z", ...overrides,}); it.effect("atomically registers a connected owner and correlates its response", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const requests = yield* broker.connect(makeOwner()); yield* Stream.runForEach(requests, (request) => broker.respond({ requestId: request.requestId, ok: true, result: { available: true }, }), ).pipe(Effect.forkScoped); yield* Effect.yieldNow; const result = yield* broker.invoke<{ available: boolean }>({ scope, operation: "open", input: {}, }); expect(result).toEqual({ available: true }); }), ),); it.effect("preserves bounded request and remote selector diagnostics", () => { const locator = "role=button[name='request-secret']"; const remoteMessage = "Unexpected token near remote-secret."; const remoteError = { _tag: "PreviewAutomationInvalidSelectorError", message: remoteMessage, detail: { selector: "role=button[name='remote-secret']" }, } as const; return Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const requests = yield* broker.connect(makeOwner({ tabId: "tab-1" })); yield* Stream.runForEach(requests, (request) => broker.respond({ requestId: request.requestId, ok: false, error: remoteError, }), ).pipe(Effect.forkScoped); yield* Effect.yieldNow; const error = yield* broker .invoke<void>({ scope, operation: "click", input: { locator }, timeoutMs: 1_234, }) .pipe(Effect.flip); expect(error).toBeInstanceOf(PreviewAutomationInvalidSelectorError); expect(error).toMatchObject({ operation: "click", environmentId: scope.environmentId, threadId: scope.threadId, providerSessionId: scope.providerSessionId, providerInstanceId: scope.providerInstanceId, clientId: "client-1", requestId: "preview-0", tabId: "tab-1", timeoutMs: 1_234, selectorKind: "locator", selectorLength: locator.length, remoteTag: "PreviewAutomationInvalidSelectorError", remoteMessageLength: remoteMessage.length, remoteDetailKind: "object", }); expect(error.message).toBe( `Preview automation click received an invalid locator (${locator.length} characters).`, ); expect(error.message).not.toContain("secret"); expect(error.cause).toBe(remoteError); expect("selector" in error).toBe(false); expect("remoteMessage" in error).toBe(false); expect("remoteDetail" in error).toBe(false); }), );}); it.effect("distinguishes malformed remote failures", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const requests = yield* broker.connect(makeOwner()); yield* Stream.runForEach(requests, (request) => broker.respond({ requestId: request.requestId, ok: false }), ).pipe(Effect.forkScoped); yield* Effect.yieldNow; const error = yield* broker .invoke<void>({ scope, operation: "status", input: {}, timeoutMs: 2_000 }) .pipe(Effect.flip); expect(error).toBeInstanceOf(PreviewAutomationMalformedResponseError); expect(error).toMatchObject({ operation: "status", environmentId: scope.environmentId, threadId: scope.threadId, providerSessionId: scope.providerSessionId, providerInstanceId: scope.providerInstanceId, clientId: "client-1", requestId: "preview-0", timeoutMs: 2_000, }); }), ),); it.effect("rejects calls when no focused owner exists", () => Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const error = yield* broker .invoke<void>({ scope, operation: "status", input: {} }) .pipe(Effect.flip); expect(error).toBeInstanceOf(PreviewAutomationNoFocusedOwnerError); expect(error).toMatchObject({ operation: "status", environmentId: scope.environmentId, threadId: scope.threadId, providerSessionId: scope.providerSessionId, providerInstanceId: scope.providerInstanceId, }); }),); it.effect("routes interactive commands to a hidden durable browser host", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const requests = yield* broker.connect( makeOwner({ clientId: "client-hidden", tabId: "tab-hidden" }), ); yield* Stream.runForEach(requests, (request) => broker.respond({ requestId: request.requestId, ok: true }), ).pipe(Effect.forkScoped); yield* Effect.yieldNow; yield* broker.invoke<void>({ scope, operation: "click", input: { x: 10, y: 10 } }); }), ),); it.effect("lets the browser host resolve an active tab that has not been reported yet", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const requests = yield* broker.connect(makeOwner({ tabId: null })); let routedTabId: string | undefined; yield* Stream.runForEach(requests, (request) => { routedTabId = request.tabId; return broker.respond({ requestId: request.requestId, ok: true }); }).pipe(Effect.forkScoped); yield* Effect.yieldNow; yield* broker.invoke<void>({ scope, operation: "click", input: { x: 10, y: 10 } }); expect(routedTabId).toBeUndefined(); }), ),); it.effect("preserves current owner metadata when its request stream reconnects", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const firstRequests = yield* broker.connect(makeOwner()); yield* Stream.runDrain(firstRequests).pipe(Effect.forkScoped); yield* broker.reportOwner(makeOwner({ tabId: "tab-current", visible: true })); const reconnectedRequests = yield* broker.connect(makeOwner()); let routedTabId: string | undefined; yield* Stream.runForEach(reconnectedRequests, (request) => { routedTabId = request.tabId; return broker.respond({ requestId: request.requestId, ok: true }); }).pipe(Effect.forkScoped); yield* Effect.yieldNow; yield* broker.invoke<void>({ scope, operation: "click", input: { x: 10, y: 10 } }); expect(routedTabId).toBe("tab-current"); }), ),); it.effect("ignores stale owner cleanup after the client moves to another thread", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const requests = yield* broker.connect(makeOwner()); yield* Stream.runForEach(requests, (request) => broker.respond({ requestId: request.requestId, ok: true }), ).pipe(Effect.forkScoped); yield* Effect.yieldNow; yield* broker.clearOwner({ clientId: "client-1", environmentId: scope.environmentId, threadId: ThreadId.make("thread-stale"), }); yield* broker.invoke<void>({ scope, operation: "status", input: {} }); }), ),); it.effect("fails requests assigned to a browser stream when that stream reconnects", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const _requests = yield* broker.connect(makeOwner()); const pending = yield* broker .invoke<void>({ scope, operation: "status", input: {} }) .pipe(Effect.flip, Effect.forkScoped); yield* Effect.yieldNow; const _replacementRequests = yield* broker.connect(makeOwner()); const error = yield* Fiber.join(pending); expect(error).toBeInstanceOf(PreviewAutomationClientDisconnectedError); expect(error).toMatchObject({ operation: "status", environmentId: scope.environmentId, threadId: scope.threadId, providerSessionId: scope.providerSessionId, providerInstanceId: scope.providerInstanceId, clientId: "client-1", requestId: "preview-0", timeoutMs: 15_000, }); }), ),); it.effect("falls back to an older connected owner when a newer report is not connected", () => Effect.scoped( Effect.gen(function* () { const broker = yield* PreviewAutomationBroker.make; const requests = yield* broker.connect(makeOwner({ clientId: "client-connected" })); yield* Stream.runForEach(requests, (request) => broker.respond({ requestId: request.requestId, ok: true, result: "connected" }), ).pipe(Effect.forkScoped); yield* Effect.yieldNow; yield* broker.reportOwner( makeOwner({ clientId: "client-report-only", focusedAt: "2026-06-11T00:00:01.000Z", }), ); const result = yield* broker.invoke<string>({ scope, operation: "status", input: {} }); expect(result).toBe("connected"); }), ),);
import { expect, it } from "@effect/vitest";
import {
EnvironmentId,
PreviewAutomationClientDisconnectedError,
PreviewAutomationInvalidSelectorError,
PreviewAutomationMalformedResponseError,
PreviewAutomationNoFocusedOwnerError,
ProviderInstanceId,
ThreadId,
type PreviewAutomationOwner,
} from "@t3tools/contracts";
import * as Effect from "effect/Effect";
import * as Fiber from "effect/Fiber";
import * as Stream from "effect/Stream";
import * as PreviewAutomationBroker from "./PreviewAutomationBroker.ts";
const scope = {
environmentId: EnvironmentId.make("environment-1"),
threadId: ThreadId.make("thread-1"),
providerSessionId: "provider-session-1",
providerInstanceId: ProviderInstanceId.make("codex"),
capabilities: new Set(["preview"] as const),
issuedAt: 1,
expiresAt: 2,
};
const makeOwner = (overrides: Partial<PreviewAutomationOwner> = {}): PreviewAutomationOwner => ({
clientId: "client-1",
environmentId: scope.environmentId,
threadId: scope.threadId,
tabId: null,
visible: false,
supportsAutomation: true,
focusedAt: "2026-06-11T00:00:00.000Z",
...overrides,
});
it.effect("atomically registers a connected owner and correlates its response", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const requests = yield* broker.connect(makeOwner());
yield* Stream.runForEach(requests, (request) =>
broker.respond({
requestId: request.requestId,
ok: true,
result: { available: true },
}),
).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
const result = yield* broker.invoke<{ available: boolean }>({
scope,
operation: "open",
input: {},
});
expect(result).toEqual({ available: true });
}),
),
);
it.effect("preserves bounded request and remote selector diagnostics", () => {
const locator = "role=button[name='request-secret']";
const remoteMessage = "Unexpected token near remote-secret.";
const remoteError = {
_tag: "PreviewAutomationInvalidSelectorError",
message: remoteMessage,
detail: { selector: "role=button[name='remote-secret']" },
} as const;
return Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const requests = yield* broker.connect(makeOwner({ tabId: "tab-1" }));
yield* Stream.runForEach(requests, (request) =>
broker.respond({
requestId: request.requestId,
ok: false,
error: remoteError,
}),
).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
const error = yield* broker
.invoke<void>({
scope,
operation: "click",
input: { locator },
timeoutMs: 1_234,
})
.pipe(Effect.flip);
expect(error).toBeInstanceOf(PreviewAutomationInvalidSelectorError);
expect(error).toMatchObject({
operation: "click",
environmentId: scope.environmentId,
threadId: scope.threadId,
providerSessionId: scope.providerSessionId,
providerInstanceId: scope.providerInstanceId,
clientId: "client-1",
requestId: "preview-0",
tabId: "tab-1",
timeoutMs: 1_234,
selectorKind: "locator",
selectorLength: locator.length,
remoteTag: "PreviewAutomationInvalidSelectorError",
remoteMessageLength: remoteMessage.length,
remoteDetailKind: "object",
});
expect(error.message).toBe(
`Preview automation click received an invalid locator (${locator.length} characters).`,
);
expect(error.message).not.toContain("secret");
expect(error.cause).toBe(remoteError);
expect("selector" in error).toBe(false);
expect("remoteMessage" in error).toBe(false);
expect("remoteDetail" in error).toBe(false);
}),
);
});
it.effect("distinguishes malformed remote failures", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const requests = yield* broker.connect(makeOwner());
yield* Stream.runForEach(requests, (request) =>
broker.respond({ requestId: request.requestId, ok: false }),
).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
const error = yield* broker
.invoke<void>({ scope, operation: "status", input: {}, timeoutMs: 2_000 })
.pipe(Effect.flip);
expect(error).toBeInstanceOf(PreviewAutomationMalformedResponseError);
expect(error).toMatchObject({
operation: "status",
environmentId: scope.environmentId,
threadId: scope.threadId,
providerSessionId: scope.providerSessionId,
providerInstanceId: scope.providerInstanceId,
clientId: "client-1",
requestId: "preview-0",
timeoutMs: 2_000,
});
}),
),
);
it.effect("rejects calls when no focused owner exists", () =>
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const error = yield* broker
.invoke<void>({ scope, operation: "status", input: {} })
.pipe(Effect.flip);
expect(error).toBeInstanceOf(PreviewAutomationNoFocusedOwnerError);
expect(error).toMatchObject({
operation: "status",
environmentId: scope.environmentId,
threadId: scope.threadId,
providerSessionId: scope.providerSessionId,
providerInstanceId: scope.providerInstanceId,
});
}),
);
it.effect("routes interactive commands to a hidden durable browser host", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const requests = yield* broker.connect(
makeOwner({ clientId: "client-hidden", tabId: "tab-hidden" }),
);
yield* Stream.runForEach(requests, (request) =>
broker.respond({ requestId: request.requestId, ok: true }),
).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
yield* broker.invoke<void>({ scope, operation: "click", input: { x: 10, y: 10 } });
}),
),
);
it.effect("lets the browser host resolve an active tab that has not been reported yet", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const requests = yield* broker.connect(makeOwner({ tabId: null }));
let routedTabId: string | undefined;
yield* Stream.runForEach(requests, (request) => {
routedTabId = request.tabId;
return broker.respond({ requestId: request.requestId, ok: true });
}).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
yield* broker.invoke<void>({ scope, operation: "click", input: { x: 10, y: 10 } });
expect(routedTabId).toBeUndefined();
}),
),
);
it.effect("preserves current owner metadata when its request stream reconnects", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const firstRequests = yield* broker.connect(makeOwner());
yield* Stream.runDrain(firstRequests).pipe(Effect.forkScoped);
yield* broker.reportOwner(makeOwner({ tabId: "tab-current", visible: true }));
const reconnectedRequests = yield* broker.connect(makeOwner());
let routedTabId: string | undefined;
yield* Stream.runForEach(reconnectedRequests, (request) => {
routedTabId = request.tabId;
return broker.respond({ requestId: request.requestId, ok: true });
}).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
yield* broker.invoke<void>({ scope, operation: "click", input: { x: 10, y: 10 } });
expect(routedTabId).toBe("tab-current");
}),
),
);
it.effect("ignores stale owner cleanup after the client moves to another thread", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const requests = yield* broker.connect(makeOwner());
yield* Stream.runForEach(requests, (request) =>
broker.respond({ requestId: request.requestId, ok: true }),
).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
yield* broker.clearOwner({
clientId: "client-1",
environmentId: scope.environmentId,
threadId: ThreadId.make("thread-stale"),
});
yield* broker.invoke<void>({ scope, operation: "status", input: {} });
}),
),
);
it.effect("fails requests assigned to a browser stream when that stream reconnects", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const _requests = yield* broker.connect(makeOwner());
const pending = yield* broker
.invoke<void>({ scope, operation: "status", input: {} })
.pipe(Effect.flip, Effect.forkScoped);
yield* Effect.yieldNow;
const _replacementRequests = yield* broker.connect(makeOwner());
const error = yield* Fiber.join(pending);
expect(error).toBeInstanceOf(PreviewAutomationClientDisconnectedError);
expect(error).toMatchObject({
operation: "status",
environmentId: scope.environmentId,
threadId: scope.threadId,
providerSessionId: scope.providerSessionId,
providerInstanceId: scope.providerInstanceId,
clientId: "client-1",
requestId: "preview-0",
timeoutMs: 15_000,
});
}),
),
);
it.effect("falls back to an older connected owner when a newer report is not connected", () =>
Effect.scoped(
Effect.gen(function* () {
const broker = yield* PreviewAutomationBroker.make;
const requests = yield* broker.connect(makeOwner({ clientId: "client-connected" }));
yield* Stream.runForEach(requests, (request) =>
broker.respond({ requestId: request.requestId, ok: true, result: "connected" }),
).pipe(Effect.forkScoped);
yield* Effect.yieldNow;
yield* broker.reportOwner(
makeOwner({
clientId: "client-report-only",
focusedAt: "2026-06-11T00:00:01.000Z",
}),
);
const result = yield* broker.invoke<string>({ scope, operation: "status", input: {} });
expect(result).toBe("connected");
}),
),
);