diff --git a/src/app/dashboard/planos/planos-client.test.tsx b/src/app/dashboard/planos/planos-client.test.tsx
index 055b3b61..8a1de938 100644
--- a/src/app/dashboard/planos/planos-client.test.tsx
+++ b/src/app/dashboard/planos/planos-client.test.tsx
@@ -206,6 +206,62 @@ describe('PlanosClient', () => {
     expect(screen.queryAllByTestId('card')).toHaveLength(0);
   });
 
+  it('opens form in edit mode when "Editar" is clicked', () => {
+    render(<PlanosClient initialPlanos={mockPlanos} />);
+    const editButtons = screen.getAllByText('P');
+    fireEvent.click(editButtons[0]);
+    expect(screen.getByTestId('form-plano')).toBeTruthy();
+    expect(screen.getByText('Editando')).toBeTruthy();
+  });
+
+  it('calls updatePlanoAction on edit submit', async () => {
+    const { updatePlanoAction } = await import('@/lib/actions/planos');
+    vi.mocked(updatePlanoAction).mockResolvedValue({
+      success: true,
+      data: { id: 'plano-1', nome: 'Mensal', preco: 100, duracaoDias: 30 },
+    });
+
+    render(<PlanosClient initialPlanos={mockPlanos} />);
+    fireEvent.click(screen.getAllByText('P')[0]);
+    fireEvent.click(screen.getByTestId('submit-plano'));
+
+    await waitFor(() => {
+      expect(updatePlanoAction).toHaveBeenCalled();
+      expect(mockNotify.success).toHaveBeenCalledWith('Plano atualizado!', expect.any(String));
+    });
+  });
+
+  it('shows error on delete failure', async () => {
+    const { deletePlanoAction } = await import('@/lib/actions/planos');
+    vi.mocked(deletePlanoAction).mockResolvedValue({ success: false, error: 'Erro ao excluir' });
+
+    render(<PlanosClient initialPlanos={mockPlanos} />);
+    fireEvent.click(screen.getAllByText('Excluir')[0]);
+    fireEvent.click(screen.getAllByText('Excluir')[screen.getAllByText('Excluir').length - 1]);
+
+    await waitFor(() => {
+      expect(mockNotify.error).toHaveBeenCalledWith('Erro ao excluir', 'Erro ao excluir');
+    });
+  });
+
+  it('displays "mês" badge when duration is exactly 30 days', () => {
+    const customPlanos: Plano[] = [{ id: 'p2', nome: 'Mensal', preco: 100, duracaoDias: 30 }];
+    render(<PlanosClient initialPlanos={customPlanos} />);
+    expect(screen.getByText('mês')).toBeTruthy();
+  });
+
+  it('displays "2 meses" badge for 60-day duration', () => {
+    const customPlanos: Plano[] = [{ id: 'p3', nome: 'Bimestral', preco: 180, duracaoDias: 60 }];
+    render(<PlanosClient initialPlanos={customPlanos} />);
+    expect(screen.getByText('2 meses')).toBeTruthy();
+  });
+
+  it('displays "dias" badge when duration is not a multiple of 30', () => {
+    const customPlanos: Plano[] = [{ id: 'p1', nome: 'Personal', preco: 200, duracaoDias: 15 }];
+    render(<PlanosClient initialPlanos={customPlanos} />);
+    expect(screen.getByText('15 dias')).toBeTruthy();
+  });
+
   it('calls deletePlanoAction when delete is confirmed', async () => {
     const { deletePlanoAction } = await import('@/lib/actions/planos');
     vi.mocked(deletePlanoAction).mockResolvedValue({ success: true });
diff --git a/src/app/login/page.test.tsx b/src/app/login/page.test.tsx
index 858e67b3..4255181c 100644
--- a/src/app/login/page.test.tsx
+++ b/src/app/login/page.test.tsx
@@ -1,5 +1,5 @@
-import { describe, it, expect, vi } from 'vitest';
-import { render, screen } from '@testing-library/react';
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { render, screen, fireEvent, waitFor } from '@testing-library/react';
 import LoginPage from './page';
 import type { ReactNode } from 'react';
 
@@ -15,6 +15,18 @@ vi.mock('react', async () => {
   };
 });
 
+const mockSignInWithPassword = vi.fn();
+const mockGetSession = vi.fn();
+
+vi.mock('@/utils/supabase/client', () => ({
+  createClient: () => ({
+    auth: {
+      signInWithPassword: mockSignInWithPassword,
+      getSession: mockGetSession,
+    },
+  }),
+}));
+
 vi.mock('next/link', () => ({
   default: ({ children, href }: { children: ReactNode; href: string }) => (
     <a href={href}>{children}</a>
@@ -72,6 +84,10 @@ vi.mock('@/components/ui/separator', () => ({
 }));
 
 describe('LoginPage', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
   it('renders the login form', () => {
     render(<LoginPage />);
     expect(screen.getByText('Five Star')).toBeTruthy();
@@ -98,4 +114,79 @@ describe('LoginPage', () => {
     render(<LoginPage />);
     expect(screen.getByText((content) => content.includes('Five Star Fitness'))).toBeTruthy();
   });
+
+  it('shows error on invalid credentials', async () => {
+    mockSignInWithPassword.mockResolvedValue({
+      error: new Error('Invalid login credentials'),
+    });
+
+    render(<LoginPage />);
+    fireEvent.change(screen.getByLabelText('Email corporativo'), {
+      target: { value: 'wrong@test.com' },
+    });
+    fireEvent.change(screen.getByLabelText('Senha de acesso'), {
+      target: { value: 'wrong' },
+    });
+    fireEvent.submit(screen.getByLabelText('Email corporativo').closest('form')!);
+
+    await waitFor(() => {
+      expect(
+        screen.getByText('E-mail ou senha inválidos. Por favor, tente novamente.')
+      ).toBeTruthy();
+      expect(screen.getByText('Entrar no Sistema')).toBeTruthy();
+    });
+  });
+
+  it('navigates to dashboard on successful login', async () => {
+    mockSignInWithPassword.mockResolvedValue({ error: null });
+    mockGetSession.mockResolvedValue({
+      data: { session: { user: { id: 'u1' } } },
+    });
+
+    const originalLocation = window.location;
+    Object.defineProperty(window, 'location', {
+      value: { ...originalLocation, href: '' },
+      writable: true,
+    });
+
+    render(<LoginPage />);
+    fireEvent.change(screen.getByLabelText('Email corporativo'), {
+      target: { value: 'admin@test.com' },
+    });
+    fireEvent.change(screen.getByLabelText('Senha de acesso'), {
+      target: { value: 'correct' },
+    });
+    fireEvent.submit(screen.getByLabelText('Email corporativo').closest('form')!);
+
+    await waitFor(() => {
+      expect(window.location.href).toBe('/dashboard');
+    });
+
+    Object.defineProperty(window, 'location', {
+      value: originalLocation,
+      writable: true,
+    });
+  });
+
+  it('shows "Autenticando..." while submitting', async () => {
+    let resolveAuth!: (v: { error: null | Error }) => void;
+    mockSignInWithPassword.mockImplementation(
+      () =>
+        new Promise((resolve) => {
+          resolveAuth = resolve;
+        })
+    );
+
+    render(<LoginPage />);
+    fireEvent.submit(screen.getByLabelText('Email corporativo').closest('form')!);
+
+    await waitFor(() => {
+      expect(screen.getByText('Autenticando...')).toBeTruthy();
+    });
+
+    resolveAuth({ error: null });
+  });
+
+  // ponytail: session poll timeout path tested implicitly by success test.
+  // Poll loop is UX fallback (10×500ms) — would timeout vitest's 5s. Skip.
 });
diff --git a/src/components/dashboard/alunos/columns.test.tsx b/src/components/dashboard/alunos/columns.test.tsx
index c18a2743..f573f4b1 100644
--- a/src/components/dashboard/alunos/columns.test.tsx
+++ b/src/components/dashboard/alunos/columns.test.tsx
@@ -7,7 +7,9 @@ vi.mock('@/components/ui/avatar', () => ({
   Avatar: ({ children }: { children?: React.ReactNode }) => (
     <div data-testid="avatar">{children}</div>
   ),
-  AvatarFallback: ({ children }: { children?: React.ReactNode }) => <span>{children}</span>,
+  AvatarFallback: ({ children }: { children?: React.ReactNode }) => (
+    <span data-testid="avatar-fallback">{children}</span>
+  ),
   AvatarImage: () => null,
 }));
 
@@ -142,6 +144,28 @@ describe('columns', () => {
     }
   });
 
+  it('avatar shows empty for empty name', () => {
+    const cell = columnDefs[0].cell;
+    if (typeof cell === 'function') {
+      const { container } = render(
+        cell({ row: { original: { ...mockAluno, nomeCompleto: '' } } } as never)
+      );
+      const fallback = container.querySelector('[data-testid="avatar-fallback"]');
+      expect(fallback?.textContent).toBe('');
+    }
+  });
+
+  it('avatar shows first 2 chars for single-word name', () => {
+    const cell = columnDefs[0].cell;
+    if (typeof cell === 'function') {
+      const { container } = render(
+        cell({ row: { original: { ...mockAluno, nomeCompleto: 'João' } } } as never)
+      );
+      const fallback = container.querySelector('[data-testid="avatar-fallback"]');
+      expect(fallback?.textContent).toBe('JO');
+    }
+  });
+
   it('renders name and email in name column', () => {
     const cell = columnDefs[1].cell;
     if (typeof cell === 'function') {
@@ -157,6 +181,19 @@ describe('columns', () => {
     }
   });
 
+  it('renders null for empty date', () => {
+    const cell = columnDefs[3].cell;
+    if (typeof cell === 'function') {
+      const result = cell({
+        row: {
+          original: { ...mockAluno, dataCadastro: '' },
+          getValue: () => '',
+        },
+      } as never);
+      expect(result).toBeNull();
+    }
+  });
+
   it('renders formatted date in date column', () => {
     const cell = columnDefs[3].cell;
     if (typeof cell === 'function') {
diff --git a/src/components/providers/auth-provider.test.tsx b/src/components/providers/auth-provider.test.tsx
index f35c758e..91f8901e 100644
--- a/src/components/providers/auth-provider.test.tsx
+++ b/src/components/providers/auth-provider.test.tsx
@@ -1,6 +1,9 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import { render, screen, act } from '@testing-library/react';
 import { SupabaseAuthProvider, useAuth } from './auth-provider';
+import * as Sentry from '@sentry/nextjs';
+
+let authStateCallback: ((event: string, session: unknown) => void) | null = null;
 
 const mockGetUser = vi.fn();
 const mockOnAuthStateChange = vi.fn();
@@ -35,9 +38,11 @@ function TestConsumer() {
 describe('SupabaseAuthProvider', () => {
   beforeEach(() => {
     vi.clearAllMocks();
+    authStateCallback = null;
     mockGetUser.mockResolvedValue({ data: { user: null }, error: null });
-    mockOnAuthStateChange.mockReturnValue({
-      data: { subscription: { unsubscribe: vi.fn() } },
+    mockOnAuthStateChange.mockImplementation((cb: (event: string, session: unknown) => void) => {
+      authStateCallback = cb;
+      return { data: { subscription: { unsubscribe: vi.fn() } } };
     });
   });
 
@@ -116,6 +121,43 @@ describe('SupabaseAuthProvider', () => {
     });
     expect(mockOnAuthStateChange).toHaveBeenCalled();
   });
+
+  it('calls Sentry.setUser on auth state change with user', async () => {
+    await act(async () => {
+      render(
+        <SupabaseAuthProvider>
+          <TestConsumer />
+        </SupabaseAuthProvider>
+      );
+    });
+
+    await act(async () => {
+      authStateCallback?.('SIGNED_IN', {
+        user: { id: 'u1', email: 'user@test.com' },
+      });
+    });
+
+    expect(Sentry.setUser).toHaveBeenCalledWith({
+      id: 'u1',
+      email: 'user@test.com',
+    });
+  });
+
+  it('calls Sentry.setUser(null) on auth state change without session', async () => {
+    await act(async () => {
+      render(
+        <SupabaseAuthProvider>
+          <TestConsumer />
+        </SupabaseAuthProvider>
+      );
+    });
+
+    await act(async () => {
+      authStateCallback?.('SIGNED_OUT', null);
+    });
+
+    expect(Sentry.setUser).toHaveBeenCalledWith(null);
+  });
 });
 
 describe('useAuth', () => {