diff --git a/web/app/components/billing/annotation-full/usage.spec.tsx b/web/app/components/billing/annotation-full/usage.spec.tsx
new file mode 100644
index 0000000000..c5fd1a2b10
--- /dev/null
+++ b/web/app/components/billing/annotation-full/usage.spec.tsx
@@ -0,0 +1,57 @@
+import { render, screen } from '@testing-library/react'
+import Usage from './usage'
+
+vi.mock('react-i18next', () => ({
+  useTranslation: () => ({
+    t: (key: string) => key,
+  }),
+}))
+
+const mockPlan = {
+  usage: {
+    annotatedResponse: 50,
+  },
+  total: {
+    annotatedResponse: 100,
+  },
+}
+
+vi.mock('@/context/provider-context', () => ({
+  useProviderContext: () => ({
+    plan: mockPlan,
+  }),
+}))
+
+describe('Usage', () => {
+  // Rendering: renders UsageInfo with correct props from context
+  describe('Rendering', () => {
+    it('should render usage info with data from provider context', () => {
+      // Arrange & Act
+      render(<Usage />)
+
+      // Assert
+      expect(screen.getByText('annotatedResponse.quotaTitle')).toBeInTheDocument()
+    })
+
+    it('should pass className to UsageInfo component', () => {
+      // Arrange
+      const testClassName = 'mt-4'
+
+      // Act
+      const { container } = render(<Usage className={testClassName} />)
+
+      // Assert
+      const wrapper = container.firstChild as HTMLElement
+      expect(wrapper).toHaveClass(testClassName)
+    })
+
+    it('should display usage and total values from context', () => {
+      // Arrange & Act
+      render(<Usage />)
+
+      // Assert
+      expect(screen.getByText('50')).toBeInTheDocument()
+      expect(screen.getByText('100')).toBeInTheDocument()
+    })
+  })
+})
diff --git a/web/app/components/billing/billing-page/index.spec.tsx b/web/app/components/billing/billing-page/index.spec.tsx
index 8b68f74012..f80c688d47 100644
--- a/web/app/components/billing/billing-page/index.spec.tsx
+++ b/web/app/components/billing/billing-page/index.spec.tsx
@@ -73,6 +73,56 @@ describe('Billing', () => {
     })
   })
 
+  it('returns the refetched url from the async callback', async () => {
+    const newUrl = 'https://new-billing-url'
+    refetchMock.mockResolvedValue({ data: newUrl })
+    render(<Billing />)
+
+    const actionButton = screen.getByRole('button', { name: /billing\.viewBillingTitle/ })
+    fireEvent.click(actionButton)
+
+    await waitFor(() => expect(openAsyncWindowMock).toHaveBeenCalled())
+    const [asyncCallback] = openAsyncWindowMock.mock.calls[0]
+
+    // Execute the async callback passed to openAsyncWindow
+    const result = await asyncCallback()
+    expect(result).toBe(newUrl)
+    expect(refetchMock).toHaveBeenCalled()
+  })
+
+  it('returns null when refetch returns no url', async () => {
+    refetchMock.mockResolvedValue({ data: null })
+    render(<Billing />)
+
+    const actionButton = screen.getByRole('button', { name: /billing\.viewBillingTitle/ })
+    fireEvent.click(actionButton)
+
+    await waitFor(() => expect(openAsyncWindowMock).toHaveBeenCalled())
+    const [asyncCallback] = openAsyncWindowMock.mock.calls[0]
+
+    // Execute the async callback when url is null
+    const result = await asyncCallback()
+    expect(result).toBeNull()
+  })
+
+  it('handles errors in onError callback', async () => {
+    const consoleError = vi.spyOn(console, 'error').mockImplementation(() => {})
+    render(<Billing />)
+
+    const actionButton = screen.getByRole('button', { name: /billing\.viewBillingTitle/ })
+    fireEvent.click(actionButton)
+
+    await waitFor(() => expect(openAsyncWindowMock).toHaveBeenCalled())
+    const [, options] = openAsyncWindowMock.mock.calls[0]
+
+    // Execute the onError callback
+    const testError = new Error('Test error')
+    options.onError(testError)
+    expect(consoleError).toHaveBeenCalledWith('Failed to fetch billing url', testError)
+
+    consoleError.mockRestore()
+  })
+
   it('disables the button while billing url is fetching', () => {
     fetching = true
     render(<Billing />)
diff --git a/web/app/components/billing/plan/index.spec.tsx b/web/app/components/billing/plan/index.spec.tsx
index 473f81f9f4..fb1800653e 100644
--- a/web/app/components/billing/plan/index.spec.tsx
+++ b/web/app/components/billing/plan/index.spec.tsx
@@ -125,4 +125,70 @@ describe('PlanComp', () => {
 
     expect(setShowAccountSettingModalMock).toHaveBeenCalledWith(null)
   })
+
+  it('does not trigger verify when isPending is true', async () => {
+    isPending = true
+    render(<PlanComp loc="billing-page" />)
+
+    const verifyBtn = screen.getByText('education.toVerified')
+    fireEvent.click(verifyBtn)
+
+    await waitFor(() => expect(mutateAsyncMock).not.toHaveBeenCalled())
+  })
+
+  it('renders sandbox plan', () => {
+    providerContextMock.mockReturnValue({
+      plan: { ...planMock, type: Plan.sandbox },
+      enableEducationPlan: false,
+      allowRefreshEducationVerify: false,
+      isEducationAccount: false,
+    })
+    render(<PlanComp loc="billing-page" />)
+
+    expect(screen.getByText('billing.plans.sandbox.name')).toBeInTheDocument()
+  })
+
+  it('renders team plan', () => {
+    providerContextMock.mockReturnValue({
+      plan: { ...planMock, type: Plan.team },
+      enableEducationPlan: false,
+      allowRefreshEducationVerify: false,
+      isEducationAccount: false,
+    })
+    render(<PlanComp loc="billing-page" />)
+
+    expect(screen.getByText('billing.plans.team.name')).toBeInTheDocument()
+  })
+
+  it('shows verify button when education account is about to expire', () => {
+    providerContextMock.mockReturnValue({
+      plan: planMock,
+      enableEducationPlan: true,
+      allowRefreshEducationVerify: true,
+      isEducationAccount: true,
+    })
+    render(<PlanComp loc="billing-page" />)
+
+    expect(screen.getByText('education.toVerified')).toBeInTheDocument()
+  })
+
+  it('handles modal onConfirm and onCancel callbacks', async () => {
+    mutateAsyncMock.mockRejectedValueOnce(new Error('boom'))
+    render(<PlanComp loc="billing-page" />)
+
+    // Trigger verify to show modal
+    const verifyBtn = screen.getByText('education.toVerified')
+    fireEvent.click(verifyBtn)
+
+    await waitFor(() => expect(screen.getByTestId('verify-modal').getAttribute('data-is-show')).toBe('true'))
+
+    // Get the props passed to the modal and call onConfirm/onCancel
+    const lastCall = verifyStateModalMock.mock.calls[verifyStateModalMock.mock.calls.length - 1][0]
+    expect(lastCall.onConfirm).toBeDefined()
+    expect(lastCall.onCancel).toBeDefined()
+
+    // Call onConfirm to close modal
+    lastCall.onConfirm()
+    lastCall.onCancel()
+  })
 })
diff --git a/web/app/components/billing/pricing/assets/index.spec.tsx b/web/app/components/billing/pricing/assets/index.spec.tsx
index 7980f9a182..cc56c57593 100644
--- a/web/app/components/billing/pricing/assets/index.spec.tsx
+++ b/web/app/components/billing/pricing/assets/index.spec.tsx
@@ -52,6 +52,24 @@ describe('Pricing Assets', () => {
       expect(rects.some(rect => rect.getAttribute('fill') === 'var(--color-saas-dify-blue-accessible)')).toBe(true)
     })
 
+    it('should render inactive state for Cloud', () => {
+      // Arrange
+      const { container } = render(<Cloud isActive={false} />)
+
+      // Assert
+      const rects = Array.from(container.querySelectorAll('rect'))
+      expect(rects.some(rect => rect.getAttribute('fill') === 'var(--color-text-primary)')).toBe(true)
+    })
+
+    it('should render active state for SelfHosted', () => {
+      // Arrange
+      const { container } = render(<SelfHosted isActive />)
+
+      // Assert
+      const rects = Array.from(container.querySelectorAll('rect'))
+      expect(rects.some(rect => rect.getAttribute('fill') === 'var(--color-saas-dify-blue-accessible)')).toBe(true)
+    })
+
     it('should render inactive state for SelfHosted', () => {
       // Arrange
       const { container } = render(<SelfHosted isActive={false} />)
diff --git a/web/app/components/billing/utils/index.spec.ts b/web/app/components/billing/utils/index.spec.ts
new file mode 100644
index 0000000000..03a159c18a
--- /dev/null
+++ b/web/app/components/billing/utils/index.spec.ts
@@ -0,0 +1,301 @@
+import type { CurrentPlanInfoBackend } from '../type'
+import { DocumentProcessingPriority, Plan } from '../type'
+import { getPlanVectorSpaceLimitMB, parseCurrentPlan, parseVectorSpaceToMB } from './index'
+
+describe('billing utils', () => {
+  // parseVectorSpaceToMB tests
+  describe('parseVectorSpaceToMB', () => {
+    it('should parse MB values correctly', () => {
+      expect(parseVectorSpaceToMB('50MB')).toBe(50)
+      expect(parseVectorSpaceToMB('100MB')).toBe(100)
+    })
+
+    it('should parse GB values and convert to MB', () => {
+      expect(parseVectorSpaceToMB('5GB')).toBe(5 * 1024)
+      expect(parseVectorSpaceToMB('20GB')).toBe(20 * 1024)
+    })
+
+    it('should be case insensitive', () => {
+      expect(parseVectorSpaceToMB('50mb')).toBe(50)
+      expect(parseVectorSpaceToMB('5gb')).toBe(5 * 1024)
+    })
+
+    it('should return 0 for invalid format', () => {
+      expect(parseVectorSpaceToMB('50')).toBe(0)
+      expect(parseVectorSpaceToMB('invalid')).toBe(0)
+      expect(parseVectorSpaceToMB('')).toBe(0)
+      expect(parseVectorSpaceToMB('50TB')).toBe(0)
+    })
+  })
+
+  // getPlanVectorSpaceLimitMB tests
+  describe('getPlanVectorSpaceLimitMB', () => {
+    it('should return correct vector space for sandbox plan', () => {
+      expect(getPlanVectorSpaceLimitMB(Plan.sandbox)).toBe(50)
+    })
+
+    it('should return correct vector space for professional plan', () => {
+      expect(getPlanVectorSpaceLimitMB(Plan.professional)).toBe(5 * 1024)
+    })
+
+    it('should return correct vector space for team plan', () => {
+      expect(getPlanVectorSpaceLimitMB(Plan.team)).toBe(20 * 1024)
+    })
+
+    it('should return 0 for invalid plan', () => {
+      // @ts-expect-error - Testing invalid plan input
+      expect(getPlanVectorSpaceLimitMB('invalid')).toBe(0)
+    })
+  })
+
+  // parseCurrentPlan tests
+  describe('parseCurrentPlan', () => {
+    const createMockPlanData = (overrides: Partial<CurrentPlanInfoBackend> = {}): CurrentPlanInfoBackend => ({
+      billing: {
+        enabled: true,
+        subscription: {
+          plan: Plan.sandbox,
+        },
+      },
+      members: {
+        size: 1,
+        limit: 1,
+      },
+      apps: {
+        size: 2,
+        limit: 5,
+      },
+      vector_space: {
+        size: 10,
+        limit: 50,
+      },
+      annotation_quota_limit: {
+        size: 5,
+        limit: 10,
+      },
+      documents_upload_quota: {
+        size: 20,
+        limit: 0,
+      },
+      docs_processing: DocumentProcessingPriority.standard,
+      can_replace_logo: false,
+      model_load_balancing_enabled: false,
+      dataset_operator_enabled: false,
+      education: {
+        enabled: false,
+        activated: false,
+      },
+      webapp_copyright_enabled: false,
+      workspace_members: {
+        size: 1,
+        limit: 1,
+      },
+      is_allow_transfer_workspace: false,
+      knowledge_pipeline: {
+        publish_enabled: false,
+      },
+      ...overrides,
+    })
+
+    it('should parse plan type correctly', () => {
+      const data = createMockPlanData()
+      const result = parseCurrentPlan(data)
+      expect(result.type).toBe(Plan.sandbox)
+    })
+
+    it('should parse usage values correctly', () => {
+      const data = createMockPlanData()
+      const result = parseCurrentPlan(data)
+
+      expect(result.usage.vectorSpace).toBe(10)
+      expect(result.usage.buildApps).toBe(2)
+      expect(result.usage.teamMembers).toBe(1)
+      expect(result.usage.annotatedResponse).toBe(5)
+      expect(result.usage.documentsUploadQuota).toBe(20)
+    })
+
+    it('should parse total limits correctly', () => {
+      const data = createMockPlanData()
+      const result = parseCurrentPlan(data)
+
+      expect(result.total.vectorSpace).toBe(50)
+      expect(result.total.buildApps).toBe(5)
+      expect(result.total.teamMembers).toBe(1)
+      expect(result.total.annotatedResponse).toBe(10)
+    })
+
+    it('should convert 0 limits to NUM_INFINITE (-1)', () => {
+      const data = createMockPlanData({
+        documents_upload_quota: {
+          size: 20,
+          limit: 0,
+        },
+      })
+      const result = parseCurrentPlan(data)
+      expect(result.total.documentsUploadQuota).toBe(-1)
+    })
+
+    it('should handle api_rate_limit quota', () => {
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: null,
+        },
+      })
+      const result = parseCurrentPlan(data)
+
+      expect(result.usage.apiRateLimit).toBe(100)
+      expect(result.total.apiRateLimit).toBe(5000)
+    })
+
+    it('should handle trigger_event quota', () => {
+      const data = createMockPlanData({
+        trigger_event: {
+          usage: 50,
+          limit: 3000,
+          reset_date: null,
+        },
+      })
+      const result = parseCurrentPlan(data)
+
+      expect(result.usage.triggerEvents).toBe(50)
+      expect(result.total.triggerEvents).toBe(3000)
+    })
+
+    it('should use fallback for api_rate_limit when not provided', () => {
+      const data = createMockPlanData()
+      const result = parseCurrentPlan(data)
+
+      // Fallback to plan preset value for sandbox: 5000
+      expect(result.total.apiRateLimit).toBe(5000)
+    })
+
+    it('should convert 0 or -1 rate limits to NUM_INFINITE', () => {
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 0,
+          limit: 0,
+          reset_date: null,
+        },
+      })
+      const result = parseCurrentPlan(data)
+      expect(result.total.apiRateLimit).toBe(-1)
+
+      const data2 = createMockPlanData({
+        api_rate_limit: {
+          usage: 0,
+          limit: -1,
+          reset_date: null,
+        },
+      })
+      const result2 = parseCurrentPlan(data2)
+      expect(result2.total.apiRateLimit).toBe(-1)
+    })
+
+    it('should handle reset dates with milliseconds timestamp', () => {
+      const futureDate = Date.now() + 86400000 // Tomorrow in ms
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: futureDate,
+        },
+      })
+      const result = parseCurrentPlan(data)
+
+      expect(result.reset.apiRateLimit).toBe(1)
+    })
+
+    it('should handle reset dates with seconds timestamp', () => {
+      const futureDate = Math.floor(Date.now() / 1000) + 86400 // Tomorrow in seconds
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: futureDate,
+        },
+      })
+      const result = parseCurrentPlan(data)
+
+      expect(result.reset.apiRateLimit).toBe(1)
+    })
+
+    it('should handle reset dates in YYYYMMDD format', () => {
+      const tomorrow = new Date()
+      tomorrow.setDate(tomorrow.getDate() + 1)
+      const year = tomorrow.getFullYear()
+      const month = String(tomorrow.getMonth() + 1).padStart(2, '0')
+      const day = String(tomorrow.getDate()).padStart(2, '0')
+      const dateNumber = Number.parseInt(`${year}${month}${day}`, 10)
+
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: dateNumber,
+        },
+      })
+      const result = parseCurrentPlan(data)
+
+      expect(result.reset.apiRateLimit).toBe(1)
+    })
+
+    it('should return null for invalid reset dates', () => {
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: 0,
+        },
+      })
+      const result = parseCurrentPlan(data)
+      expect(result.reset.apiRateLimit).toBeNull()
+    })
+
+    it('should return null for negative reset dates', () => {
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: -1,
+        },
+      })
+      const result = parseCurrentPlan(data)
+      expect(result.reset.apiRateLimit).toBeNull()
+    })
+
+    it('should return null when reset date is in the past', () => {
+      const pastDate = Date.now() - 86400000 // Yesterday
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: pastDate,
+        },
+      })
+      const result = parseCurrentPlan(data)
+      expect(result.reset.apiRateLimit).toBeNull()
+    })
+
+    it('should handle missing apps field', () => {
+      const data = createMockPlanData()
+      // @ts-expect-error - Testing edge case
+      delete data.apps
+      const result = parseCurrentPlan(data)
+      expect(result.usage.buildApps).toBe(0)
+    })
+
+    it('should return null for unrecognized date format', () => {
+      const data = createMockPlanData({
+        api_rate_limit: {
+          usage: 100,
+          limit: 5000,
+          reset_date: 12345, // Unrecognized format
+        },
+      })
+      const result = parseCurrentPlan(data)
+      expect(result.reset.apiRateLimit).toBeNull()
+    })
+  })
+})