chore: import upstream snapshot with attribution

tests/unit/model-test-runner.test.ts

@@ -0,0 +1,119 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import {
+  parseRetryAfterHeader,
+  detectTestKind,
+  extractProviderErrorMessage,
+  resolveModelTestTimeoutMs,
+} from "@/lib/api/modelTestRunner.ts";
+
+// ---------------------------------------------------------------------------
+// parseRetryAfterHeader — Retry-After is either delta-seconds or an HTTP-date.
+// Regression guard for the rate-limit handling in runSingleModelTest (#3267).
+// ---------------------------------------------------------------------------
+
+test("parseRetryAfterHeader returns undefined for missing/empty/null input", () => {
+  assert.equal(parseRetryAfterHeader(null), undefined);
+  assert.equal(parseRetryAfterHeader(undefined), undefined);
+  assert.equal(parseRetryAfterHeader(""), undefined);
+  assert.equal(parseRetryAfterHeader("   "), undefined);
+});
+
+test("parseRetryAfterHeader parses delta-seconds (numeric form)", () => {
+  assert.equal(parseRetryAfterHeader("0"), 0);
+  assert.equal(parseRetryAfterHeader("30"), 30);
+  assert.equal(parseRetryAfterHeader("120"), 120);
+  // fractional seconds round up (ceil) so we never under-wait
+  assert.equal(parseRetryAfterHeader("1.2"), 2);
+});
+
+test("parseRetryAfterHeader rejects non-date garbage and never yields a misleading positive wait", () => {
+  // Pure garbage with no parseable date → undefined.
+  assert.equal(parseRetryAfterHeader("soon"), undefined);
+  assert.equal(parseRetryAfterHeader("NaN"), undefined);
+  // A negative numeric is not accepted on the numeric path (>= 0 guard); it
+  // falls through to Date.parse, which yields a past date → clamped to 0.
+  // The important guarantee is that it never produces a positive wait.
+  const negative = parseRetryAfterHeader("-5");
+  assert.ok(negative === undefined || negative === 0, `expected 0/undefined, got ${negative}`);
+});
+
+test("parseRetryAfterHeader parses an HTTP-date into a non-negative seconds delta", () => {
+  // A date ~10s in the future should yield a small positive integer (>=0).
+  const future = new Date(Date.now() + 10_000).toUTCString();
+  const secs = parseRetryAfterHeader(future);
+  assert.ok(typeof secs === "number");
+  assert.ok(secs >= 0 && secs <= 11, `expected ~10s, got ${secs}`);
+
+  // A date in the past clamps to 0 (never negative).
+  const past = new Date(Date.now() - 60_000).toUTCString();
+  assert.equal(parseRetryAfterHeader(past), 0);
+});
+
+// ---------------------------------------------------------------------------
+// detectTestKind — picks the right test endpoint (chat / embeddings / rerank)
+// from the model id + custom-model metadata. Rerank must win over embedding.
+// ---------------------------------------------------------------------------
+
+test("detectTestKind defaults to a plain chat test for ordinary models", () => {
+  assert.deepEqual(detectTestKind("openai/gpt-4o", null), {
+    isRerank: false,
+    isEmbedding: false,
+  });
+});
+
+test("detectTestKind detects embeddings by id heuristics", () => {
+  for (const id of [
+    "openai/text-embedding-3-small",
+    "jina/jina-embeddings-v3",
+    "baai/bge-m3",
+    "jinaai/jina-clip-v2",
+    "colbert-ir/colbertv2",
+  ]) {
+    assert.equal(detectTestKind(id, null).isEmbedding, true, `${id} should be embedding`);
+    assert.equal(detectTestKind(id, null).isRerank, false, `${id} should not be rerank`);
+  }
+});
+
+test("detectTestKind detects rerank by id and by metadata, and rerank wins over embedding", () => {
+  assert.deepEqual(detectTestKind("jina/jina-reranker-v2", null), {
+    isRerank: true,
+    isEmbedding: false,
+  });
+  // apiFormat metadata drives detection even when the id is opaque
+  assert.equal(detectTestKind("vendor/opaque-model", { apiFormat: "rerank" }).isRerank, true);
+  assert.equal(
+    detectTestKind("vendor/opaque-model", { supportedEndpoints: ["embeddings"] }).isEmbedding,
+    true
+  );
+  // A model that looks like both rerank and embedding resolves to rerank only.
+  const both = detectTestKind("vendor/rerank-embedding-hybrid", null);
+  assert.equal(both.isRerank, true);
+  assert.equal(both.isEmbedding, false);
+});
+
+test("extractProviderErrorMessage includes upstream details when generic error is unhelpful", () => {
+  const body = {
+    error: { message: "HuggingChat returned HTTP 500" },
+    upstream_details: {
+      message: "Model is temporarily overloaded",
+      status: "error",
+    },
+  };
+
+  assert.equal(
+    extractProviderErrorMessage(body, "Internal Server Error"),
+    "HuggingChat returned HTTP 500: Model is temporarily overloaded"
+  );
+});
+
+test("resolveModelTestTimeoutMs extends Dola Pro model checks", () => {
+  assert.equal(resolveModelTestTimeoutMs("doubao-web", "dola-pro", 10_000), 90_000);
+  assert.equal(resolveModelTestTimeoutMs("doubao-web", "doubao-web/dola-pro", 10_000), 90_000);
+  assert.equal(resolveModelTestTimeoutMs("DOUBAO-WEB", "dola-pro", 120_000), 120_000);
+});
+
+test("resolveModelTestTimeoutMs leaves ordinary models unchanged", () => {
+  assert.equal(resolveModelTestTimeoutMs("doubao-web", "dola-speed", 10_000), 10_000);
+  assert.equal(resolveModelTestTimeoutMs("openai", "dola-pro", 10_000), 10_000);
+});