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import {
clearInternalHooks,
createInternalHookEvent,
registerInternalHook,
triggerInternalHook,
type InternalHookEvent,
} from "./internal-hooks.js";
type ActionCase = {
label: string;
key: string;
action: "received" | "transcribed" | "preprocessed" | "sent";
context: Record<string, unknown>;
assertContext: (context: Record<string, unknown>) => void;
};
const actionCases: ActionCase[] = [
{
label: "message:received",
key: "message:received",
action: "received",
context: {
from: "signal:+15551234567",
to: "bot:+15559876543",
content: "Test message",
channelId: "signal",
conversationId: "conv-abc",
messageId: "msg-xyz",
senderId: "sender-1",
senderName: "Test User",
senderUsername: "testuser",
senderE164: "+15551234567",
provider: "signal",
surface: "signal",
threadId: "thread-1",
originatingChannel: "signal",
originatingTo: "bot:+15559876543",
timestamp: 1707600000,
},
assertContext: (context) => {
expect(context.content).toBe("Test message");
expect(context.channelId).toBe("signal");
expect(context.senderE164).toBe("+15551234567");
expect(context.threadId).toBe("thread-1");
},
},
{
label: "message:transcribed",
key: "message:transcribed",
action: "transcribed",
context: {
body: "🎤 [Audio]",
bodyForAgent: "[Audio] Transcript: Hello from voice",
transcript: "Hello from voice",
channelId: "telegram",
mediaType: "audio/ogg",
},
assertContext: (context) => {
expect(context.body).toBe("🎤 [Audio]");
expect(context.bodyForAgent).toContain("Transcript:");
expect(context.transcript).toBe("Hello from voice");
expect(context.mediaType).toBe("audio/ogg");
},
},
{
label: "message:preprocessed",
key: "message:preprocessed",
action: "preprocessed",
context: {
body: "🎤 [Audio]",
bodyForAgent: "[Audio] Transcript: Check https://example.com\n[Link summary: Example site]",
transcript: "Check https://example.com",
channelId: "telegram",
mediaType: "audio/ogg",
isGroup: false,
},
assertContext: (context) => {
expect(context.transcript).toBe("Check https://example.com");
expect(String(context.bodyForAgent)).toContain("Link summary");
expect(String(context.bodyForAgent)).toContain("Transcript:");
},
},
{
label: "message:sent",
key: "message:sent",
action: "sent",
context: {
from: "bot:456",
to: "user:123",
content: "Reply text",
channelId: "discord",
conversationId: "channel:C123",
provider: "discord",
surface: "discord",
threadId: "thread-abc",
originatingChannel: "discord",
originatingTo: "channel:C123",
},
assertContext: (context) => {
expect(context.content).toBe("Reply text");
expect(context.channelId).toBe("discord");
expect(context.conversationId).toBe("channel:C123");
expect(context.threadId).toBe("thread-abc");
},
},
];
describe("message hooks", () => {
beforeEach(() => {
clearInternalHooks();
});
afterEach(() => {
clearInternalHooks();
});
describe("action handlers", () => {
for (const testCase of actionCases) {
it(`triggers handler for ${testCase.label}`, async () => {
const handler = vi.fn();
registerInternalHook(testCase.key, handler);
await triggerInternalHook(
createInternalHookEvent("message", testCase.action, "session-1", testCase.context),
);
expect(handler).toHaveBeenCalledOnce();
const event = handler.mock.calls[0][0] as InternalHookEvent;
expect(event.type).toBe("message");
expect(event.action).toBe(testCase.action);
testCase.assertContext(event.context);
});
}
it("does not trigger action-specific handlers for other actions", async () => {
const sentHandler = vi.fn();
registerInternalHook("message:sent", sentHandler);
await triggerInternalHook(
createInternalHookEvent("message", "received", "session-1", { content: "hello" }),
);
expect(sentHandler).not.toHaveBeenCalled();
});
});
describe("general handler", () => {
it("receives full message lifecycle in order", async () => {
const events: InternalHookEvent[] = [];
registerInternalHook("message", (event) => {
events.push(event);
});
const lifecycleFixtures: Array<{
action: "received" | "transcribed" | "preprocessed" | "sent";
context: Record<string, unknown>;
}> = [
{ action: "received", context: { content: "hi" } },
{ action: "transcribed", context: { transcript: "hello" } },
{ action: "preprocessed", context: { body: "hello", bodyForAgent: "hello" } },
{ action: "sent", context: { content: "reply" } },
];
for (const fixture of lifecycleFixtures) {
await triggerInternalHook(
createInternalHookEvent("message", fixture.action, "s1", fixture.context),
);
}
expect(events.map((event) => event.action)).toEqual([
"received",
"transcribed",
"preprocessed",
"sent",
]);
});
it("triggers both general and specific handlers", async () => {
const generalHandler = vi.fn();
const specificHandler = vi.fn();
registerInternalHook("message", generalHandler);
registerInternalHook("message:received", specificHandler);
await triggerInternalHook(
createInternalHookEvent("message", "received", "s1", { content: "test" }),
);
expect(generalHandler).toHaveBeenCalledOnce();
expect(specificHandler).toHaveBeenCalledOnce();
});
});
describe("error isolation", () => {
it("does not propagate handler errors", async () => {
const badHandler = vi.fn(() => {
throw new Error("Hook exploded");
});
registerInternalHook("message:received", badHandler);
await expect(
triggerInternalHook(
createInternalHookEvent("message", "received", "s1", { content: "test" }),
),
).resolves.not.toThrow();
expect(badHandler).toHaveBeenCalledOnce();
});
it("continues with later handlers when one fails", async () => {
const failHandler = vi.fn(() => {
throw new Error("First handler fails");
});
const successHandler = vi.fn();
registerInternalHook("message:received", failHandler);
registerInternalHook("message:received", successHandler);
await triggerInternalHook(
createInternalHookEvent("message", "received", "s1", { content: "test" }),
);
expect(failHandler).toHaveBeenCalledOnce();
expect(successHandler).toHaveBeenCalledOnce();
});
it("isolates async handler errors", async () => {
const asyncFailHandler = vi.fn(async () => {
throw new Error("Async hook failed");
});
registerInternalHook("message:sent", asyncFailHandler);
await expect(
triggerInternalHook(createInternalHookEvent("message", "sent", "s1", { content: "reply" })),
).resolves.not.toThrow();
expect(asyncFailHandler).toHaveBeenCalledOnce();
});
});
describe("event structure", () => {
it("includes timestamps on message events", async () => {
const handler = vi.fn();
registerInternalHook("message", handler);
const before = new Date();
await triggerInternalHook(
createInternalHookEvent("message", "received", "s1", { content: "hi" }),
);
const after = new Date();
const event = handler.mock.calls[0][0] as InternalHookEvent;
expect(event.timestamp).toBeInstanceOf(Date);
expect(event.timestamp.getTime()).toBeGreaterThanOrEqual(before.getTime());
expect(event.timestamp.getTime()).toBeLessThanOrEqual(after.getTime());
});
it("preserves mutable messages and sessionKey", async () => {
const events: InternalHookEvent[] = [];
registerInternalHook("message", (event) => {
event.messages.push("Echo");
events.push(event);
});
const sessionKey = "agent:main:telegram:abc";
const received = createInternalHookEvent("message", "received", sessionKey, {
content: "hi",
});
await triggerInternalHook(received);
await triggerInternalHook(
createInternalHookEvent("message", "sent", sessionKey, { content: "reply" }),
);
expect(received.messages).toContain("Echo");
expect(events[0]?.sessionKey).toBe(sessionKey);
expect(events[1]?.sessionKey).toBe(sessionKey);
});
});
});
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