chore: import upstream snapshot with attribution

tests/unit/refactor-resolveBaseUrl.test.ts

@@ -0,0 +1,93 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { BaseExecutor } from "../../open-sse/executors/base.ts";
+import type { ProviderCredentials } from "../../open-sse/executors/base.ts";
+
+/**
+ * TestExecutor exposes protected resolveBaseUrl for unit testing.
+ */
+class TestExecutor extends BaseExecutor {
+  constructor(config = {}) {
+    super("test-provider", {
+      baseUrls: ["https://default.example/v1/chat/completions"],
+      ...config,
+    });
+  }
+
+  /** Public wrapper for the protected method. */
+  publicResolveBaseUrl(credentials: ProviderCredentials | null, fallback?: string): string {
+    return this.resolveBaseUrl(credentials, fallback);
+  }
+
+  async transformRequest(model: string, body: unknown, stream: boolean) {
+    return body;
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Tests
+// ---------------------------------------------------------------------------
+
+test("resolveBaseUrl: returns credentials.providerSpecificData.baseUrl when set", () => {
+  const executor = new TestExecutor();
+  const result = executor.publicResolveBaseUrl({
+    apiKey: "key-1",
+    providerSpecificData: { baseUrl: "https://custom.example/v1/chat/completions" },
+  });
+  assert.equal(result, "https://custom.example/v1/chat/completions");
+});
+
+test("resolveBaseUrl: returns fallback when credentials have no baseUrl", () => {
+  const executor = new TestExecutor();
+  const result = executor.publicResolveBaseUrl(
+    { apiKey: "key-1" },
+    "https://fallback.example/v1/chat/completions"
+  );
+  assert.equal(result, "https://fallback.example/v1/chat/completions");
+});
+
+test("resolveBaseUrl: returns config.baseUrl when no credentials and no fallback", () => {
+  const executor = new TestExecutor({
+    baseUrl: "https://config.example/v1/chat/completions",
+  });
+  const result = executor.publicResolveBaseUrl(null);
+  assert.equal(result, "https://config.example/v1/chat/completions");
+});
+
+test("resolveBaseUrl: returns empty string when nothing is configured", () => {
+  const executor = new TestExecutor();
+  const result = executor.publicResolveBaseUrl(null);
+  assert.equal(result, "");
+});
+
+test("resolveBaseUrl: credentials.baseUrl takes precedence over fallback", () => {
+  const executor = new TestExecutor();
+  const result = executor.publicResolveBaseUrl(
+    {
+      apiKey: "key-1",
+      providerSpecificData: { baseUrl: "https://cred.example/v1" },
+    },
+    "https://fallback.example/v1"
+  );
+  assert.equal(result, "https://cred.example/v1");
+});
+
+test("resolveBaseUrl: credentials.baseUrl takes precedence over config.baseUrl", () => {
+  const executor = new TestExecutor({
+    baseUrl: "https://config.example/v1",
+  });
+  const result = executor.publicResolveBaseUrl({
+    apiKey: "key-1",
+    providerSpecificData: { baseUrl: "https://cred.example/v1" },
+  });
+  assert.equal(result, "https://cred.example/v1");
+});
+
+test("resolveBaseUrl: fallback takes precedence over config.baseUrl", () => {
+  const executor = new TestExecutor({
+    baseUrl: "https://config.example/v1",
+  });
+  const result = executor.publicResolveBaseUrl({ apiKey: "key-1" }, "https://fallback.example/v1");
+  assert.equal(result, "https://fallback.example/v1");
+});