wehub-resource-sync
120 lines
4.2 KiB
TypeScript
120 lines
4.2 KiB
TypeScript
import test from "node:test";
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import assert from "node:assert/strict";
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import { GithubExecutor } from "../../open-sse/executors/github.ts";
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// GitHub Copilot's /chat/completions endpoint rejects a conversation that ends with an
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// assistant message: "This model does not support assistant message prefill. The
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// conversation must end with a user message." Anthropic clients (e.g. newest Claude
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// Desktop) send a trailing assistant turn as a prefill seed — the Anthropic API honors
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// it, but Copilot 400s. GithubExecutor.dropTrailingAssistantPrefill() strips the
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// trailing assistant message(s) before dispatch, scoped to the github executor only.
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// Port of 9router#2143 (author: Manuel <baslr@users.noreply.github.com>).
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test("dropTrailingAssistantPrefill drops a single trailing assistant message", () => {
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const executor = new GithubExecutor();
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const messages = [
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{ role: "user", content: "Hi" },
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{ role: "assistant", content: "Here is the answer:" },
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];
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const out = executor.dropTrailingAssistantPrefill(messages);
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assert.equal(out.length, 1);
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assert.equal(out[0].role, "user");
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});
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test("dropTrailingAssistantPrefill drops multiple consecutive trailing assistant messages", () => {
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const executor = new GithubExecutor();
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const messages = [
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{ role: "user", content: "Hi" },
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{ role: "assistant", content: "one" },
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{ role: "assistant", content: "two" },
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];
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const out = executor.dropTrailingAssistantPrefill(messages);
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assert.equal(out.length, 1);
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assert.equal(out[0].role, "user");
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});
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test("dropTrailingAssistantPrefill is a no-op (same reference) when the conversation ends with a user message", () => {
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const executor = new GithubExecutor();
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const messages = [
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{ role: "user", content: "Hi" },
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{ role: "assistant", content: "Hello" },
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{ role: "user", content: "More" },
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];
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const out = executor.dropTrailingAssistantPrefill(messages);
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assert.equal(out, messages, "must return the same array reference when nothing changes");
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assert.equal(out.length, 3);
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});
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test("dropTrailingAssistantPrefill is a no-op when the conversation ends with a tool message", () => {
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const executor = new GithubExecutor();
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const messages = [
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{ role: "user", content: "Hi" },
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{ role: "assistant", content: null, tool_calls: [{ id: "x" }] },
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{ role: "tool", tool_call_id: "x", content: "result" },
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];
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const out = executor.dropTrailingAssistantPrefill(messages);
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assert.equal(out, messages, "must return the same array reference when nothing changes");
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assert.equal(out.length, 3);
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assert.equal(out[2].role, "tool");
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});
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test("dropTrailingAssistantPrefill never empties an assistant-only conversation", () => {
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const executor = new GithubExecutor();
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const messages = [{ role: "assistant", content: "only" }];
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const out = executor.dropTrailingAssistantPrefill(messages);
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assert.equal(out.length, 1, "must keep at least one message");
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assert.equal(out[0].role, "assistant");
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});
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test("dropTrailingAssistantPrefill is null/empty safe", () => {
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const executor = new GithubExecutor();
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assert.deepEqual(executor.dropTrailingAssistantPrefill([]), []);
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assert.equal(executor.dropTrailingAssistantPrefill(undefined), undefined);
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assert.equal(executor.dropTrailingAssistantPrefill(null), null);
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});
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test("GithubExecutor.transformRequest drops the trailing assistant prefill end-to-end", () => {
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const executor = new GithubExecutor();
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const body = {
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model: "claude-sonnet-4.6",
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messages: [
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{ role: "user", content: "Hi" },
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{ role: "assistant", content: "Here is the answer:" },
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],
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};
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const out = executor.transformRequest("claude-sonnet-4.6", body, false, {});
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assert.equal(out.messages.length, 1);
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assert.equal(out.messages[0].role, "user");
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});
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test("GithubExecutor.transformRequest leaves a user-terminated conversation untouched end-to-end", () => {
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const executor = new GithubExecutor();
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const body = {
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model: "claude-sonnet-4.6",
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messages: [
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{ role: "user", content: "Hi" },
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{ role: "assistant", content: "Hello" },
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{ role: "user", content: "More" },
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],
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};
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const out = executor.transformRequest("claude-sonnet-4.6", body, false, {});
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assert.equal(out.messages.length, 3);
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assert.equal(out.messages[2].role, "user");
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});
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