test: add Vendor API tests

tests/vendors.test.ts

@@ -0,0 +1,476 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import type { Mock } from "vitest";
+import type { Session } from "next-auth";
+import {
+  createVendor,
+  listVendors,
+  validateCreateVendorInput,
+} from "@/lib/vendors";
+import { prisma } from "@/lib/prisma";
+
+// Note: this file has two layers of coverage, mirroring tests/licenses.test.ts:
+// - lib-level tests below exercise src/lib/vendors.ts directly (validation,
+//   nullable taxCode/notes, list ordering).
+// - route-level tests (further down) exercise src/app/api/vendors/route.ts
+//   over HTTP, including the auth() gate — mirrors tests/licenses.test.ts's
+//   @/auth mocking pattern.
+vi.mock("@/auth", () => ({ auth: vi.fn() }));
+
+import { GET, POST } from "@/app/api/vendors/route";
+import { auth } from "@/auth";
+
+const mockedAuth = auth as unknown as Mock<() => Promise<Session | null>>;
+
+const testSession: Session = {
+  user: { id: "test-user-id" },
+  expires: new Date(Date.now() + 60 * 60 * 1000).toISOString(),
+};
+
+function postRequest(body: unknown): Request {
+  return new Request("http://localhost/api/vendors", {
+    method: "POST",
+    headers: { "content-type": "application/json" },
+    body: JSON.stringify(body),
+  });
+}
+
+beforeEach(async () => {
+  // Each test starts from an empty table so listing/order assertions are
+  // deterministic.
+  await prisma.vendor.deleteMany();
+  // Default to a logged-in session — the lib-level tests below don't go
+  // through the route at all (so this is a no-op for them), and the
+  // route-level tests exercise business logic, not auth gating (that's
+  // covered by the "auth gating" describe block further down).
+  mockedAuth.mockResolvedValue(testSession);
+});
+
+describe("validateCreateVendorInput", () => {
+  it("accepts valid input with taxCode and notes", () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "[email protected]",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+      taxCode: "0301234567",
+      notes: "Preferred reseller for Dell laptops",
+    });
+
+    expect(result.ok).toBe(true);
+    if (result.ok) {
+      expect(result.value).toMatchObject({
+        name: "FPT Trading",
+        contactEmail: "[email protected]",
+        contactPhone: "0281234567",
+        address: "123 Nguyen Van Linh, Q7, HCMC",
+        taxCode: "0301234567",
+        notes: "Preferred reseller for Dell laptops",
+      });
+    }
+  });
+
+  it("accepts valid input with no taxCode/notes", () => {
+    const result = validateCreateVendorInput({
+      name: "Synnex FPT",
+      contactEmail: "[email protected]",
+      contactPhone: "0287654321",
+      address: "456 Le Van Viet, Q9, HCMC",
+    });
+
+    expect(result.ok).toBe(true);
+    if (result.ok) {
+      expect(result.value.taxCode).toBeUndefined();
+      expect(result.value.notes).toBeUndefined();
+    }
+  });
+
+  it("rejects an empty name", () => {
+    const result = validateCreateVendorInput({
+      name: "",
+      contactEmail: "[email protected]",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+    });
+
+    expect(result.ok).toBe(false);
+    if (!result.ok) {
+      expect(result.error).toMatch(/name/i);
+    }
+  });
+
+  it("rejects an invalid contactEmail", () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "not-an-email",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+    });
+
+    expect(result.ok).toBe(false);
+    if (!result.ok) {
+      expect(result.error).toMatch(/contactEmail/i);
+    }
+  });
+
+  it("rejects a missing contactEmail", () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+    });
+
+    expect(result.ok).toBe(false);
+    if (!result.ok) {
+      expect(result.error).toMatch(/contactEmail/i);
+    }
+  });
+
+  it("rejects an empty contactPhone", () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "[email protected]",
+      contactPhone: "",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+    });
+
+    expect(result.ok).toBe(false);
+    if (!result.ok) {
+      expect(result.error).toMatch(/contactPhone/i);
+    }
+  });
+
+  it("rejects an empty address", () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "[email protected]",
+      contactPhone: "0281234567",
+      address: "",
+    });
+
+    expect(result.ok).toBe(false);
+    if (!result.ok) {
+      expect(result.error).toMatch(/address/i);
+    }
+  });
+
+  it("rejects an empty taxCode when provided", () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "[email protected]",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+      taxCode: "",
+    });
+
+    expect(result.ok).toBe(false);
+    if (!result.ok) {
+      expect(result.error).toMatch(/taxCode/i);
+    }
+  });
+
+  it("accepts a null taxCode/notes explicitly", () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "[email protected]",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+      taxCode: null,
+      notes: null,
+    });
+
+    expect(result.ok).toBe(true);
+    if (result.ok) {
+      expect(result.value.taxCode).toBeNull();
+      expect(result.value.notes).toBeNull();
+    }
+  });
+});
+
+describe("createVendor", () => {
+  it("creates a vendor with taxCode and notes", async () => {
+    const result = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "[email protected]",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+      taxCode: "0301234567",
+      notes: "Preferred reseller for Dell laptops",
+    });
+    expect(result.ok).toBe(true);
+    if (!result.ok) return;
+
+    const record = await createVendor(result.value);
+
+    expect(record).toMatchObject({
+      name: "FPT Trading",
+      contact_email: "[email protected]",
+      contact_phone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+      tax_code: "0301234567",
+      notes: "Preferred reseller for Dell laptops",
+    });
+    expect(typeof record.id).toBe("string");
+    expect(record.id.length).toBeGreaterThan(0);
+    expect(Number.isNaN(Date.parse(record.created_at))).toBe(false);
+  });
+
+  it("creates a vendor with no taxCode/notes (both null)", async () => {
+    const result = validateCreateVendorInput({
+      name: "Synnex FPT",
+      contactEmail: "[email protected]",
+      contactPhone: "0287654321",
+      address: "456 Le Van Viet, Q9, HCMC",
+    });
+    expect(result.ok).toBe(true);
+    if (!result.ok) return;
+
+    const record = await createVendor(result.value);
+
+    expect(record.tax_code).toBeNull();
+    expect(record.notes).toBeNull();
+  });
+});
+
+describe("listVendors", () => {
+  it("lists created vendors, newest first", async () => {
+    const first = validateCreateVendorInput({
+      name: "Synnex FPT",
+      contactEmail: "[email protected]",
+      contactPhone: "0287654321",
+      address: "456 Le Van Viet, Q9, HCMC",
+    });
+    expect(first.ok).toBe(true);
+    if (first.ok) await createVendor(first.value);
+
+    // Ensure a distinct created_at ordering even on fast filesystems/clocks.
+    await new Promise((resolve) => setTimeout(resolve, 5));
+
+    const second = validateCreateVendorInput({
+      name: "FPT Trading",
+      contactEmail: "[email protected]",
+      contactPhone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+    });
+    expect(second.ok).toBe(true);
+    if (second.ok) await createVendor(second.value);
+
+    const records = await listVendors();
+
+    expect(records).toHaveLength(2);
+    // newest first
+    expect(records[0]).toMatchObject({ name: "FPT Trading" });
+    expect(records[1]).toMatchObject({ name: "Synnex FPT" });
+  });
+
+  it("returns an empty list when there are no vendors", async () => {
+    const records = await listVendors();
+    expect(records).toEqual([]);
+  });
+});
+
+describe("POST /api/vendors", () => {
+  it("creates a vendor on valid input", async () => {
+    const res = await POST(
+      postRequest({
+        name: "FPT Trading",
+        contactEmail: "[email protected]",
+        contactPhone: "0281234567",
+        address: "123 Nguyen Van Linh, Q7, HCMC",
+        taxCode: "0301234567",
+        notes: "Preferred reseller for Dell laptops",
+      })
+    );
+
+    expect(res.status).toBe(201);
+    const body = await res.json();
+
+    expect(body).toMatchObject({
+      name: "FPT Trading",
+      contact_email: "[email protected]",
+      contact_phone: "0281234567",
+      address: "123 Nguyen Van Linh, Q7, HCMC",
+      tax_code: "0301234567",
+      notes: "Preferred reseller for Dell laptops",
+    });
+    expect(typeof body.id).toBe("string");
+    expect(body.id.length).toBeGreaterThan(0);
+    expect(Number.isNaN(Date.parse(body.created_at))).toBe(false);
+  });
+
+  it("creates a vendor with no taxCode/notes", async () => {
+    const res = await POST(
+      postRequest({
+        name: "Synnex FPT",
+        contactEmail: "[email protected]",
+        contactPhone: "0287654321",
+        address: "456 Le Van Viet, Q9, HCMC",
+      })
+    );
+
+    expect(res.status).toBe(201);
+    const body = await res.json();
+    expect(body.tax_code).toBeNull();
+    expect(body.notes).toBeNull();
+  });
+
+  it("rejects an empty name", async () => {
+    const res = await POST(
+      postRequest({
+        name: "",
+        contactEmail: "[email protected]",
+        contactPhone: "0281234567",
+        address: "123 Nguyen Van Linh, Q7, HCMC",
+      })
+    );
+
+    expect(res.status).toBe(400);
+    const body = await res.json();
+    expect(body.error).toMatch(/name/i);
+  });
+
+  it("rejects an invalid contactEmail", async () => {
+    const res = await POST(
+      postRequest({
+        name: "FPT Trading",
+        contactEmail: "not-an-email",
+        contactPhone: "0281234567",
+        address: "123 Nguyen Van Linh, Q7, HCMC",
+      })
+    );
+
+    expect(res.status).toBe(400);
+    const body = await res.json();
+    expect(body.error).toMatch(/contactEmail/i);
+  });
+
+  it("rejects an empty contactPhone", async () => {
+    const res = await POST(
+      postRequest({
+        name: "FPT Trading",
+        contactEmail: "[email protected]",
+        contactPhone: "",
+        address: "123 Nguyen Van Linh, Q7, HCMC",
+      })
+    );
+
+    expect(res.status).toBe(400);
+    const body = await res.json();
+    expect(body.error).toMatch(/contactPhone/i);
+  });
+
+  it("rejects an empty address", async () => {
+    const res = await POST(
+      postRequest({
+        name: "FPT Trading",
+        contactEmail: "[email protected]",
+        contactPhone: "0281234567",
+        address: "",
+      })
+    );
+
+    expect(res.status).toBe(400);
+    const body = await res.json();
+    expect(body.error).toMatch(/address/i);
+  });
+
+  it("rejects an invalid JSON body", async () => {
+    const req = new Request("http://localhost/api/vendors", {
+      method: "POST",
+      headers: { "content-type": "application/json" },
+      body: "not json",
+    });
+
+    const res = await POST(req);
+    expect(res.status).toBe(400);
+    const body = await res.json();
+    expect(body.error).toMatch(/JSON/i);
+  });
+
+  it("rejects a non-object JSON body", async () => {
+    // Note: arrays are `typeof "object"` in JS, so they pass the route's
+    // object check (same behavior as /api/licenses) — use a JSON string
+    // primitive here to actually exercise the "not an object" branch.
+    const res = await POST(postRequest("not an object"));
+
+    expect(res.status).toBe(400);
+    const body = await res.json();
+    expect(body.error).toMatch(/JSON object/i);
+  });
+});
+
+describe("GET /api/vendors", () => {
+  it("lists created vendors, newest first", async () => {
+    await POST(
+      postRequest({
+        name: "Synnex FPT",
+        contactEmail: "[email protected]",
+        contactPhone: "0287654321",
+        address: "456 Le Van Viet, Q9, HCMC",
+      })
+    );
+    // Ensure a distinct created_at ordering even on fast filesystems/clocks.
+    await new Promise((resolve) => setTimeout(resolve, 5));
+    await POST(
+      postRequest({
+        name: "FPT Trading",
+        contactEmail: "[email protected]",
+        contactPhone: "0281234567",
+        address: "123 Nguyen Van Linh, Q7, HCMC",
+      })
+    );
+
+    const res = await GET();
+    expect(res.status).toBe(200);
+
+    const body = await res.json();
+    expect(Array.isArray(body)).toBe(true);
+    expect(body).toHaveLength(2);
+
+    // newest first
+    expect(body[0]).toMatchObject({ name: "FPT Trading" });
+    expect(body[1]).toMatchObject({ name: "Synnex FPT" });
+  });
+
+  it("returns an empty list when there are no vendors", async () => {
+    const res = await GET();
+    expect(res.status).toBe(200);
+    const body = await res.json();
+    expect(body).toEqual([]);
+  });
+});
+
+describe("auth gating on /api/vendors", () => {
+  // Mirrors tests/licenses.test.ts's "auth gating" block — only checks
+  // session presence, per the flat permission model (no role/permission
+  // logic).
+  it("POST /api/vendors returns 401 without a session", async () => {
+    mockedAuth.mockResolvedValue(null);
+
+    const res = await POST(
+      postRequest({
+        name: "FPT Trading",
+        contactEmail: "[email protected]",
+        contactPhone: "0281234567",
+        address: "123 Nguyen Van Linh, Q7, HCMC",
+      })
+    );
+
+    expect(res.status).toBe(401);
+    const body = await res.json();
+    expect(body).toEqual({ error: "Unauthorized" });
+
+    // And it must not have created anything.
+    const remaining = await prisma.vendor.findMany();
+    expect(remaining).toHaveLength(0);
+  });
+
+  it("GET /api/vendors returns 401 without a session", async () => {
+    mockedAuth.mockResolvedValue(null);
+
+    const res = await GET();
+
+    expect(res.status).toBe(401);
+    const body = await res.json();
+    expect(body).toEqual({ error: "Unauthorized" });
+  });
+});