diff --git a/web/__test__/store/activationCodeData.test.ts b/web/__test__/store/activationCodeData.test.ts
new file mode 100644
index 000000000..8bb0e0234
--- /dev/null
+++ b/web/__test__/store/activationCodeData.test.ts
@@ -0,0 +1,193 @@
+import { ref } from 'vue';
+import { createPinia, setActivePinia } from 'pinia';
+import { useQuery } from '@vue/apollo-composable';
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+import {
+  ACTIVATION_CODE_QUERY,
+  PARTNER_INFO_QUERY,
+} from '~/components/Activation/graphql/activationCode.query';
+import { useActivationCodeDataStore } from '~/components/Activation/store/activationCodeData';
+import { RegistrationState } from '~/composables/gql/graphql';
+
+// Create a complete mock of UseQueryReturn with all required properties
+const createCompleteQueryMock = <T>(result: T | null = null, loading = false) => ({
+  result: ref(result),
+  loading: ref(loading),
+  error: ref(null),
+  networkStatus: ref(7),
+  called: ref(true),
+  variables: ref({}),
+  document: ref(null),
+  query: ref(null),
+  forceDisabled: ref(false),
+  options: { errorPolicy: 'all' as const },
+  stop: vi.fn(),
+  start: vi.fn(),
+  restart: vi.fn(),
+  refetch: vi.fn(),
+  fetchMore: vi.fn(),
+  onResult: vi.fn(),
+  onError: vi.fn(),
+  subscribeToMore: vi.fn(),
+  updateQuery: vi.fn(),
+});
+
+vi.mock('@vue/apollo-composable', () => ({
+  useQuery: vi.fn(),
+}));
+
+describe('ActivationCodeData Store', () => {
+  beforeEach(() => {
+    setActivePinia(createPinia());
+    vi.clearAllMocks();
+  });
+
+  afterEach(() => {
+    vi.resetAllMocks();
+  });
+
+  describe('Computed Properties', () => {
+    it('should compute loading state when activationCodeLoading is true', () => {
+      vi.mocked(useQuery).mockImplementation((query) => {
+        if (query === ACTIVATION_CODE_QUERY) {
+          return createCompleteQueryMock(null, true);
+        }
+
+        return createCompleteQueryMock(null, false);
+      });
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.loading).toBe(true);
+    });
+
+    it('should compute loading state when partnerInfoLoading is true', () => {
+      vi.mocked(useQuery).mockImplementation((query) => {
+        if (query === PARTNER_INFO_QUERY) {
+          return createCompleteQueryMock(null, true);
+        }
+
+        return createCompleteQueryMock(null, false);
+      });
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.loading).toBe(true);
+    });
+
+    it('should compute loading state when both loadings are false', () => {
+      vi.mocked(useQuery).mockImplementation(() => createCompleteQueryMock(null, false));
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.loading).toBe(false);
+    });
+
+    it('should compute activationCode correctly', () => {
+      const mockActivationCode = 'TEST-CODE-123';
+
+      vi.mocked(useQuery).mockImplementation((query) => {
+        if (query === ACTIVATION_CODE_QUERY) {
+          return createCompleteQueryMock(
+            {
+              customization: { activationCode: mockActivationCode },
+            },
+            false
+          );
+        }
+        return createCompleteQueryMock(null, false);
+      });
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.activationCode).toBe(mockActivationCode);
+    });
+
+    it('should compute isFreshInstall as true when regState is ENOKEYFILE', () => {
+      vi.mocked(useQuery).mockImplementation((query) => {
+        if (query === ACTIVATION_CODE_QUERY) {
+          return createCompleteQueryMock(
+            {
+              vars: { regState: RegistrationState.ENOKEYFILE },
+            },
+            false
+          );
+        }
+
+        return createCompleteQueryMock(null, false);
+      });
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.isFreshInstall).toBe(true);
+    });
+
+    it('should compute isFreshInstall as false when regState is not ENOKEYFILE', () => {
+      vi.mocked(useQuery).mockImplementation((query) => {
+        if (query === ACTIVATION_CODE_QUERY) {
+          return createCompleteQueryMock(
+            {
+              vars: { regState: 'REGISTERED' as RegistrationState },
+            },
+            false
+          );
+        }
+
+        return createCompleteQueryMock(null, false);
+      });
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.isFreshInstall).toBe(false);
+    });
+
+    it('should use publicPartnerInfo when available', () => {
+      const mockPublicPartnerInfo = { name: 'Public Partner' };
+      vi.mocked(useQuery).mockImplementation((query) => {
+        if (query === PARTNER_INFO_QUERY) {
+          return createCompleteQueryMock(
+            {
+              publicPartnerInfo: mockPublicPartnerInfo,
+            },
+            false
+          );
+        }
+
+        return createCompleteQueryMock(null, false);
+      });
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.partnerInfo).toEqual(mockPublicPartnerInfo);
+    });
+
+    it('should fallback to activationCode partnerInfo when publicPartnerInfo is null', () => {
+      const mockPartnerInfo = { name: 'Activation Partner' };
+      vi.mocked(useQuery).mockImplementation((query) => {
+        if (query === ACTIVATION_CODE_QUERY) {
+          return createCompleteQueryMock(
+            {
+              customization: { partnerInfo: mockPartnerInfo },
+            },
+            false
+          );
+        } else if (query === PARTNER_INFO_QUERY) {
+          return createCompleteQueryMock(
+            {
+              publicPartnerInfo: null,
+            },
+            false
+          );
+        }
+
+        return createCompleteQueryMock(null, false);
+      });
+
+      const store = useActivationCodeDataStore();
+
+      expect(store.partnerInfo).toEqual(mockPartnerInfo);
+    });
+  });
+});
diff --git a/web/__test__/store/activationCodeModal.test.ts b/web/__test__/store/activationCodeModal.test.ts
new file mode 100644
index 000000000..f21dc3a08
--- /dev/null
+++ b/web/__test__/store/activationCodeModal.test.ts
@@ -0,0 +1,139 @@
+import { ref } from 'vue';
+import { createPinia, setActivePinia } from 'pinia';
+import { useSessionStorage } from '@vueuse/core';
+
+import { ACTIVATION_CODE_MODAL_HIDDEN_STORAGE_KEY } from '~/consts';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+
+import { useActivationCodeDataStore } from '~/components/Activation/store/activationCodeData';
+import { useActivationCodeModalStore } from '~/components/Activation/store/activationCodeModal';
+import { useCallbackActionsStore } from '~/store/callbackActions';
+
+vi.mock('@vueuse/core', () => ({
+  useSessionStorage: vi.fn(),
+}));
+
+vi.mock('~/components/Activation/store/activationCodeData', () => ({
+  useActivationCodeDataStore: vi.fn(),
+}));
+
+vi.mock('~/store/callbackActions', () => ({
+  useCallbackActionsStore: vi.fn(),
+}));
+
+describe('ActivationCodeModal Store', () => {
+  let store: ReturnType<typeof useActivationCodeModalStore>;
+  let mockIsHidden: ReturnType<typeof ref>;
+  let mockIsFreshInstall: ReturnType<typeof ref>;
+  let mockCallbackData: ReturnType<typeof ref>;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+
+    // Mock window.location to prevent navigation errors
+    Object.defineProperty(window, 'location', {
+      value: { href: '' },
+      writable: true,
+    });
+
+    mockIsHidden = ref(null);
+    mockIsFreshInstall = ref(false);
+    mockCallbackData = ref(null);
+
+    vi.mocked(useSessionStorage).mockReturnValue(mockIsHidden);
+    vi.mocked(useActivationCodeDataStore).mockReturnValue({
+      isFreshInstall: mockIsFreshInstall,
+    } as unknown as ReturnType<typeof useActivationCodeDataStore>);
+    vi.mocked(useCallbackActionsStore).mockReturnValue({
+      callbackData: mockCallbackData,
+    } as unknown as ReturnType<typeof useCallbackActionsStore>);
+
+    setActivePinia(createPinia());
+    store = useActivationCodeModalStore();
+  });
+
+  afterEach(() => {
+    vi.resetAllMocks();
+    mockIsHidden.value = null;
+    mockIsFreshInstall.value = false;
+    mockCallbackData.value = null;
+  });
+
+  describe('State Management', () => {
+    it('should initialize with correct storage key', () => {
+      expect(useSessionStorage).toHaveBeenCalledWith(ACTIVATION_CODE_MODAL_HIDDEN_STORAGE_KEY, null);
+    });
+
+    it('should set isHidden value correctly', () => {
+      store.setIsHidden(true);
+      expect(mockIsHidden.value).toBe(true);
+
+      store.setIsHidden(false);
+      expect(mockIsHidden.value).toBe(false);
+
+      store.setIsHidden(null);
+      expect(mockIsHidden.value).toBe(null);
+    });
+  });
+
+  describe('Computed Properties', () => {
+    it('should be visible when explicitly set to show', () => {
+      mockIsHidden.value = false;
+
+      expect(store.isVisible).toBe(true);
+    });
+
+    it('should be visible when fresh install and not explicitly hidden', () => {
+      mockIsHidden.value = null;
+      mockIsFreshInstall.value = true;
+      mockCallbackData.value = null;
+
+      expect(store.isVisible).toBe(true);
+    });
+
+    it('should not be visible when explicitly hidden', () => {
+      mockIsHidden.value = true;
+
+      expect(store.isVisible).toBe(false);
+    });
+
+    it('should not be visible when not fresh install', () => {
+      mockIsHidden.value = null;
+      mockIsFreshInstall.value = false;
+
+      expect(store.isVisible).toBe(false);
+    });
+
+    it('should not be visible when callback data exists', () => {
+      mockIsHidden.value = null;
+      mockIsFreshInstall.value = true;
+      mockCallbackData.value = { someData: 'test' };
+
+      expect(store.isVisible).toBe(false);
+    });
+  });
+
+  describe('Konami Code Handling', () => {
+    const keySequence = [
+      'ArrowUp',
+      'ArrowUp',
+      'ArrowDown',
+      'ArrowDown',
+      'ArrowLeft',
+      'ArrowRight',
+      'ArrowLeft',
+      'ArrowRight',
+      'b',
+      'a',
+    ];
+
+    it('should not trigger on partial sequence', () => {
+      keySequence.slice(0, 3).forEach((key) => {
+        window.dispatchEvent(new KeyboardEvent('keydown', { key }));
+      });
+
+      expect(mockIsHidden.value).toBe(null);
+      expect(window.location.href).toBe('');
+    });
+  });
+});