test(auth): Add tests for AuthService and Auth validations

frontend/package-lock.json

@@ -9,6 +9,7 @@
       "version": "0.0.0",
       "dependencies": {
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+        "axios": "^1.13.5",
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         "clsx": "^2.1.1",
         "lucide-react": "^0.563.0",
@@ -16,7 +17,8 @@
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
         "tailwind-merge": "^3.4.0",
-        "tailwindcss": "^4.1.18"
+        "tailwindcss": "^4.1.18",
+        "zod": "^4.3.6"
       },
       "devDependencies": {
         "@eslint/js": "^9.39.1",
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         "node": ">=4"
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+      "license": "MIT"
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+      "dependencies": {
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+        "form-data": "^4.0.5",
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+      "license": "MIT",
+      "dependencies": {
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@@ -5400,6 +5430,15 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
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+      "license": "MIT",
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
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       "version": "2.0.0",
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@@ -5616,6 +5651,21 @@
         "node": ">= 0.4"
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+        "es-errors": "^1.3.0",
+        "get-intrinsic": "^1.2.6",
+        "has-tostringtag": "^1.0.2",
+        "hasown": "^2.0.2"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
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       "version": "3.2.0",
       "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz",
@@ -6208,6 +6258,63 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/follow-redirects": {
+      "version": "1.15.11",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.11.tgz",
+      "integrity": "sha512-deG2P0JfjrTxl50XGCDyfI97ZGVCxIpfKYmfyrQ54n5FO/0gfIES8C/Psl6kWVDolizcaaxZJnTS0QSMxvnsBQ==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://github.com/sponsors/RubenVerborgh"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=4.0"
+      },
+      "peerDependenciesMeta": {
+        "debug": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/form-data": {
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.5.tgz",
+      "integrity": "sha512-8RipRLol37bNs2bhoV67fiTEvdTrbMUYcFTiy3+wuuOnUog2QBHCZWXDRijWQfAkhBj2Uf5UnVaiWwA5vdd82w==",
+      "license": "MIT",
+      "dependencies": {
+        "asynckit": "^0.4.0",
+        "combined-stream": "^1.0.8",
+        "es-set-tostringtag": "^2.1.0",
+        "hasown": "^2.0.2",
+        "mime-types": "^2.1.12"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/form-data/node_modules/mime-db": {
+      "version": "1.52.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
+      "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/form-data/node_modules/mime-types": {
+      "version": "2.1.35",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "mime-db": "1.52.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
     "node_modules/formdata-polyfill": {
       "version": "4.0.10",
       "resolved": "https://registry.npmjs.org/formdata-polyfill/-/formdata-polyfill-4.0.10.tgz",
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-      "dev": true,
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/ljharb"
@@ -6331,7 +6437,6 @@
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@@ -6435,7 +6539,6 @@
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-      "dev": true,
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       "engines": {
         "node": ">= 0.4"
@@ -6483,11 +6585,25 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/has-tostringtag": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/has-tostringtag/-/has-tostringtag-1.0.2.tgz",
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+      "license": "MIT",
+      "dependencies": {
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+      },
+      "engines": {
+        "node": ">= 0.4"
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+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
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@@ -8318,6 +8433,12 @@
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+    "node_modules/proxy-from-env": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/proxy-from-env/-/proxy-from-env-1.1.0.tgz",
+      "integrity": "sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==",
+      "license": "MIT"
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     "node_modules/punycode": {
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frontend/package.json

@@ -12,6 +12,7 @@
   },
   "dependencies": {
     "@tailwindcss/vite": "^4.1.18",
+    "axios": "^1.13.5",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "lucide-react": "^0.563.0",
@@ -19,7 +20,8 @@
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "tailwind-merge": "^3.4.0",
-    "tailwindcss": "^4.1.18"
+    "tailwindcss": "^4.1.18",
+    "zod": "^4.3.6"
   },
   "devDependencies": {
     "@eslint/js": "^9.39.1",

frontend/src/lib/validations/auth.test.ts

@@ -0,0 +1,50 @@
+import { describe, it, expect } from "vitest"
+import { loginSchema, registerSchema } from "./auth"
+
+describe("Auth Validations", () => {
+  describe("loginSchema", () => {
+    it("validates correct input", () => {
+      const result = loginSchema.safeParse({
+        email: "test@example.com",
+        password: "password123",
+      })
+      expect(result.success).toBe(true)
+    })
+
+    it("fails on invalid email", () => {
+      const result = loginSchema.safeParse({
+        email: "not-an-email",
+        password: "password123",
+      })
+      expect(result.success).toBe(false)
+    })
+
+    it("fails on short password", () => {
+      const result = loginSchema.safeParse({
+        email: "test@example.com",
+        password: "123",
+      })
+      expect(result.success).toBe(false)
+    })
+  })
+
+  describe("registerSchema", () => {
+    it("validates correct input", () => {
+      const result = registerSchema.safeParse({
+        email: "test@example.com",
+        password: "password123",
+        confirmPassword: "password123",
+      })
+      expect(result.success).toBe(true)
+    })
+
+    it("fails if passwords do not match", () => {
+      const result = registerSchema.safeParse({
+        email: "test@example.com",
+        password: "password123",
+        confirmPassword: "different",
+      })
+      expect(result.success).toBe(false)
+    })
+  })
+})

frontend/src/services/auth.test.ts

@@ -0,0 +1,60 @@
+import { describe, it, expect, vi, beforeEach } from "vitest"
+import axios from "axios"
+import { AuthService } from "./auth"
+
+vi.mock("axios")
+const mockedAxios = axios as jest.Mocked<typeof axios>
+
+describe("AuthService", () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    localStorage.clear()
+  })
+
+  it("successfully logs in and stores the token", async () => {
+    const mockResponse = {
+      data: {
+        access_token: "fake-jwt-token",
+        token_type: "bearer",
+      },
+    }
+    mockedAxios.post.mockResolvedValueOnce(mockResponse)
+
+    const result = await AuthService.login("test@example.com", "password123")
+
+    expect(mockedAxios.post).toHaveBeenCalledWith("/api/auth/login", expect.any(FormData))
+    expect(result.access_token).toBe("fake-jwt-token")
+    expect(localStorage.getItem("token")).toBe("fake-jwt-token")
+  })
+
+  it("handles login failure", async () => {
+    mockedAxios.post.mockRejectedValueOnce(new Error("Invalid credentials"))
+
+    await expect(AuthService.login("test@example.com", "wrong")).rejects.toThrow("Invalid credentials")
+    expect(localStorage.getItem("token")).toBeNull()
+  })
+
+  it("successfully registers a user", async () => {
+    const mockResponse = {
+      data: {
+        id: "user-123",
+        email: "test@example.com",
+      },
+    }
+    mockedAxios.post.mockResolvedValueOnce(mockResponse)
+
+    const result = await AuthService.register("test@example.com", "password123")
+
+    expect(mockedAxios.post).toHaveBeenCalledWith("/api/auth/register", {
+      email: "test@example.com",
+      password: "password123",
+    })
+    expect(result.email).toBe("test@example.com")
+  })
+
+  it("logs out and clears the token", () => {
+    localStorage.setItem("token", "some-token")
+    AuthService.logout()
+    expect(localStorage.getItem("token")).toBeNull()
+  })
+})