diff --git a/src/hooks/__tests__/useAuthContextValue.test.ts b/src/hooks/__tests__/useAuthContextValue.test.ts
new file mode 100644
index 0000000..f1699b0
--- /dev/null
+++ b/src/hooks/__tests__/useAuthContextValue.test.ts
@@ -0,0 +1,31 @@
+import { describe, test, expect } from "vitest"
+import { renderHook } from "@testing-library/react"
+
+import useAuthContextValue from "@/hooks/useAuthContextValue"
+
+describe("useAuthContextValue", () => {
+  test("returns auth context", () => {
+    const { result } = renderHook(() => useAuthContextValue({}))
+    expect(result.current).toEqual({
+      accessToken: null,
+      refreshToken: null,
+      setAccessToken: expect.any(Function),
+      setRefreshToken: expect.any(Function)
+    })
+  })
+
+  test("updates access token and refresh token", () => {
+    const { result } = renderHook(() => useAuthContextValue({
+      accessToken: "accessToken",
+      refreshToken: "refreshToken"
+    }))
+
+    expect(result.current.accessToken).toBe("accessToken")
+    expect(result.current.refreshToken).toBe("refreshToken")
+  })
+})
+
+
+
+
+
diff --git a/src/hooks/__tests__/useGetAccessTokenEffect.test.ts b/src/hooks/__tests__/useGetAccessTokenEffect.test.ts
new file mode 100644
index 0000000..8b197d2
--- /dev/null
+++ b/src/hooks/__tests__/useGetAccessTokenEffect.test.ts
@@ -0,0 +1,51 @@
+import { describe, test, expect, vi } from "vitest"
+import { renderHook } from "@testing-library/react"
+import useGetAccessTokenEffect from "@/hooks/useGetAccessTokenEffect"
+
+describe("useGetAccessTokenEffect", () => {
+  test("returns null state", () => {
+    const { result } = renderHook(() => useGetAccessTokenEffect(null, null, undefined))
+    expect(result.current).toEqual({
+      isLoading: false,
+      error: null,
+      tokens: null
+    })
+  })
+
+  test("returns access tokens", async () => {
+    vi.mock("@/apis/token", async () => ({
+      postTokens: vi.fn(() => Promise.resolve({
+        refresh_token: "refresh_token_jwt", access_token: "access_token_jwt"
+      }))
+    }))
+
+    const { result } = renderHook(
+      () => useGetAccessTokenEffect("state", "code", "codeVerifier")
+    )
+
+    expect(result.current.isLoading).toBeTruthy()
+    expect(result.current.error).toBeFalsy()
+
+    vi.waitFor(() => {
+      expect(result.current.tokens).toEqual({
+        accessToken: "access_token_jwt",
+        refreshToken: "refresh_token_jwt"
+      })
+      expect(result.current.isLoading).toBeFalsy()
+      expect(result.current.error).toBeFalsy()
+    })
+  })
+
+  test("captures error", async () => {
+    vi.mock("@/apis/token", async () => ({
+      postTokens: vi.fn(() => Promise.reject(new Error("error")))
+    }))
+
+    const { result } = renderHook(() =>
+      useGetAccessTokenEffect("state", "code", "codeVerifier"))
+
+    expect(result.current.isLoading).toBeTruthy()
+    expect(result.current.error).toBeNull()
+    await vi.waitFor(() => expect(result.current.error).toBe("error"))
+  })
+})
diff --git a/src/utils/__tests__/stateCookie.test.ts b/src/utils/__tests__/stateCookie.test.ts
index cf009da..81a1bf6 100644
--- a/src/utils/__tests__/stateCookie.test.ts
+++ b/src/utils/__tests__/stateCookie.test.ts
@@ -1,8 +1,10 @@
-import { describe, test, expect, beforeAll, afterAll, vi } from "vitest"
+import {
+  describe, test, expect, beforeAll, afterAll, afterEach, vi
+} from "vitest"
 import { getStateCookie, createStateCookie } from "../stateCookie"
 
 describe("createStateCookie", () => {
-  let mockCookie = []
+  let mockCookie: string[] = []
   beforeAll(() => {
     vi.stubGlobal('document', {
       get cookie() {