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136 lines (126 loc) · 3.7 KB
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import {
RuntimeHost,
ToolRegistry,
type Provider,
type ProviderResult,
type ProviderRunOpts,
} from '@deepcode/core';
import type { ThreadSnapshot, TurnSnapshot } from '@deepcode/protocol';
import { describe, expect, it } from 'vitest';
import { RuntimeHostExecutor, historyFromThread } from './runtime-executor.js';
const priorAssistant = {
role: 'assistant' as const,
content: [{ type: 'text' as const, text: 'prior answer' }],
};
const thread: ThreadSnapshot = {
id: 'thread-1',
cwd: '/workspace',
createdAt: '2026-08-01T00:00:00.000Z',
updatedAt: '2026-08-01T00:00:01.000Z',
turns: [
{
id: 'turn-prior',
threadId: 'thread-1',
status: 'completed',
startedAt: '2026-08-01T00:00:00.000Z',
completedAt: '2026-08-01T00:00:01.000Z',
items: [
{
id: 'item-user',
type: 'user_message',
payload: { text: 'prior question' },
completedAt: '2026-08-01T00:00:00.000Z',
},
{
id: 'item-assistant',
type: 'assistant_message',
payload: { message: priorAssistant },
completedAt: '2026-08-01T00:00:01.000Z',
},
],
},
],
};
class StreamingProvider implements Provider {
readonly name = 'streaming-test';
seenMessages: ProviderRunOpts['messages'] = [];
async runTurn(options: ProviderRunOpts): Promise<ProviderResult> {
this.seenMessages = options.messages;
options.handlers?.onTextDelta?.('new ');
options.handlers?.onTextDelta?.('answer');
return {
content: [{ type: 'text', text: 'new answer' }],
stopReason: 'end_turn',
usage: { inputTokens: 1, outputTokens: 2, reasoningTokens: 0, cacheReadTokens: 0 },
};
}
}
describe('RuntimeHostExecutor', () => {
it('reconstructs history and returns only messages created by the new turn', async () => {
const provider = new StreamingProvider();
const host = new RuntimeHost({
provider,
tools: new ToolRegistry(),
cwd: '/workspace',
});
const executor = new RuntimeHostExecutor({ createHost: () => host });
const turn: TurnSnapshot = {
id: 'turn-current',
threadId: thread.id,
status: 'in_progress',
startedAt: '2026-08-01T00:00:02.000Z',
items: [],
};
const deltas: string[] = [];
const result = await executor.execute({
thread,
turn,
input: { text: 'current question' },
signal: new AbortController().signal,
publishDelta: (_itemId, delta) => deltas.push(delta),
});
expect(provider.seenMessages).toEqual([
{ role: 'user', content: [{ type: 'text', text: 'prior question' }] },
priorAssistant,
expect.objectContaining({
role: 'user',
content: [{ type: 'text', text: 'current question' }],
}),
]);
expect(deltas).toEqual(['new ', 'answer']);
expect(result).toEqual({
status: 'completed',
items: [
{
type: 'assistant_message',
payload: {
message: expect.objectContaining({
role: 'assistant',
content: [{ type: 'text', text: 'new answer' }],
}),
},
},
],
});
});
it('ignores non-message protocol items when rebuilding provider history', () => {
const withError: ThreadSnapshot = {
...thread,
turns: [
{
...thread.turns[0]!,
items: [
...thread.turns[0]!.items,
{
id: 'item-error',
type: 'error',
payload: { message: 'transport failed' },
completedAt: '2026-08-01T00:00:01.000Z',
},
],
},
],
};
expect(historyFromThread(withError)).toHaveLength(2);
});
});