test: add comprehensive test coverage across backend and frontend (#682)

Synced from sferarc/pgbeam@bbab027

Author: SferaDev

src/index.test.ts

@@ -0,0 +1,60 @@
+import { describe, expect, it } from "vitest";
+import type { PgBeamClientOptions } from "./index";
+import { ApiError, extractMessage, PgBeamClient } from "./index";
+
+describe("SDK index re-exports", () => {
+  it("exports PgBeamClient class", () => {
+    expect(PgBeamClient).toBeDefined();
+    expect(typeof PgBeamClient).toBe("function");
+  });
+
+  it("exports ApiError class", () => {
+    expect(ApiError).toBeDefined();
+    expect(typeof ApiError).toBe("function");
+  });
+
+  it("exports extractMessage function", () => {
+    expect(extractMessage).toBeDefined();
+    expect(typeof extractMessage).toBe("function");
+  });
+
+  it("PgBeamClient can be instantiated", () => {
+    const client = new PgBeamClient({
+      token: "test-token",
+      baseUrl: "https://api.example.com",
+    });
+    expect(client).toBeInstanceOf(PgBeamClient);
+  });
+
+  it("ApiError can be instantiated and has expected properties", () => {
+    const error = new ApiError(404, "Not Found", { message: "not found" });
+    expect(error).toBeInstanceOf(ApiError);
+    expect(error.status).toBe(404);
+    expect(error.statusText).toBe("Not Found");
+    expect(error.body).toEqual({ message: "not found" });
+  });
+
+  it("extractMessage extracts message from error body", () => {
+    const error = new ApiError(400, "Bad Request", {
+      message: "invalid input",
+    });
+    const msg = extractMessage(error);
+    expect(msg).toBe("invalid input");
+  });
+
+  it("extractMessage handles error without body", () => {
+    const error = new ApiError(500, "Internal Server Error", undefined);
+    const msg = extractMessage(error);
+    expect(typeof msg).toBe("string");
+  });
+
+  it("type exports are importable (compile-time check)", () => {
+    // These are type-only exports — this test verifies the module
+    // can be imported without errors at runtime.
+    const opts: PgBeamClientOptions = {
+      token: "tok",
+      baseUrl: "https://api.example.com",
+    };
+    expect(opts.token).toBe("tok");
+  });
+});