diff --git a/src/components/buttonCircle/__test__/CircleButton.test.tsx b/src/components/buttonCircle/__test__/CircleButton.test.tsx
index 998b205..a30ecc5 100644
--- a/src/components/buttonCircle/__test__/CircleButton.test.tsx
+++ b/src/components/buttonCircle/__test__/CircleButton.test.tsx
@@ -134,4 +134,54 @@ describe('CircleButton component', () => {
     const button = render(<CircleButton variant="warning" dropdown={dropdown} />);
     expect(button).toMatchSnapshot();
   });
+
+  it('should close dropdown when toggle is clicked while open', () => {
+    const TestComponent = () => {
+      const [isOpen, setIsOpen] = useState(false);
+      return (
+        <CircleButton
+          dropdown={<div>Dropdown Content</div>}
+          isOpen={isOpen}
+          handleClose={() => setIsOpen(false)}
+          handleOpen={() => setIsOpen(true)}
+        />
+      );
+    };
+    render(<TestComponent />);
+    const toggleButton = screen.getAllByRole('button')[1];
+
+    fireEvent.click(toggleButton);
+    expect(screen.getByText('Dropdown Content')).toBeInTheDocument();
+
+    fireEvent.click(toggleButton);
+    expect(screen.queryByText('Dropdown Content')).not.toBeInTheDocument();
+  });
+
+  it('should render indicator without className correctly', () => {
+    const indicator = { icon: <span data-testid="indicator-icon" /> };
+    render(<CircleButton indicator={indicator} />);
+    expect(screen.getByTestId('indicator-icon')).toBeInTheDocument();
+  });
+
+  it('should not close dropdown when clicking inside the circle button while open', () => {
+    const TestComponent = () => {
+      const [isOpen, setIsOpen] = useState(false);
+      return (
+        <CircleButton
+          dropdown={<div>Dropdown Content</div>}
+          isOpen={isOpen}
+          handleClose={() => setIsOpen(false)}
+          handleOpen={() => setIsOpen(true)}
+        />
+      );
+    };
+    render(<TestComponent />);
+    const [mainButton, toggleButton] = screen.getAllByRole('button');
+
+    fireEvent.click(toggleButton);
+    expect(screen.getByText('Dropdown Content')).toBeInTheDocument();
+
+    fireEvent.click(mainButton);
+    expect(screen.getByText('Dropdown Content')).toBeInTheDocument();
+  });
 });
diff --git a/src/components/checkbox/__test__/Checkbox.test.tsx b/src/components/checkbox/__test__/Checkbox.test.tsx
index fa908c4..456a68a 100644
--- a/src/components/checkbox/__test__/Checkbox.test.tsx
+++ b/src/components/checkbox/__test__/Checkbox.test.tsx
@@ -1,7 +1,7 @@
 import React from 'react';
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it, vi } from 'vitest';
 import { Checkbox } from '../';
-import { render } from '@testing-library/react';
+import { render, fireEvent } from '@testing-library/react';
 
 describe('Checkbox component', () => {
   it('Checkbox disabled and not checked should render correctly', () => {
@@ -33,4 +33,38 @@ describe('Checkbox component', () => {
     const button = render(<Checkbox disabled={true} checked={true} indeterminate={true} />);
     expect(button).toMatchSnapshot();
   });
+
+  it('calls onClick when label is clicked and not disabled', () => {
+    const handleClick = vi.fn();
+    const { container } = render(<Checkbox onClick={handleClick as any} />);
+    const label = container.querySelector('label');
+    fireEvent.click(label!);
+    expect(handleClick).toHaveBeenCalled();
+  });
+
+  it('does not call onClick when disabled', () => {
+    const handleClick = vi.fn();
+    const { container } = render(<Checkbox disabled={true} onClick={handleClick as any} />);
+    const label = container.querySelector('label');
+    fireEvent.click(label!);
+    expect(handleClick).not.toHaveBeenCalled();
+  });
+
+  it('prevents default on inner div click', () => {
+    const { container } = render(<Checkbox />);
+    const div = container.querySelector('div');
+    
+    const event = new MouseEvent('click', { bubbles: true, cancelable: true });
+    event.preventDefault = vi.fn();
+    fireEvent(div!, event);
+    expect(event.preventDefault).toHaveBeenCalled();
+  });
+
+  it('triggers onKeyDown handlers without errors', () => {
+    const { container } = render(<Checkbox />);
+    const label = container.querySelector('label');
+    const div = container.querySelector('div');
+    fireEvent.keyDown(label!, { key: 'Enter' });
+    fireEvent.keyDown(div!, { key: 'Enter' });
+  });
 });
diff --git a/src/components/list/__test__/ListItem.test.tsx b/src/components/list/__test__/ListItem.test.tsx
index 6b7a425..aa37cfa 100644
--- a/src/components/list/__test__/ListItem.test.tsx
+++ b/src/components/list/__test__/ListItem.test.tsx
@@ -66,6 +66,31 @@ describe('ListItem', () => {
     expect(mockOnClickContextMenu).toHaveBeenCalled();
   });
 
+  it('updates dimensions when menuItemsRef size changes', () => {
+    const originalOffsetWidth = Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'offsetWidth');
+    const originalOffsetHeight = Object.getOwnPropertyDescriptor(HTMLElement.prototype, 'offsetHeight');
+
+    Object.defineProperty(HTMLElement.prototype, 'offsetWidth', { configurable: true, value: 100 });
+    Object.defineProperty(HTMLElement.prototype, 'offsetHeight', { configurable: true, value: 100 });
+
+    renderListItem({ isOpen: true, selected: true });
+
+    if (originalOffsetWidth) Object.defineProperty(HTMLElement.prototype, 'offsetWidth', originalOffsetWidth);
+    if (originalOffsetHeight) Object.defineProperty(HTMLElement.prototype, 'offsetHeight', originalOffsetHeight);
+  });
+
+  it('handles contextMenu positioning near screen edges', () => {
+    renderListItem({ isOpen: true, selected: true });
+    const listItem = screen.getByText('1').closest('div');
+    
+    fireEvent.contextMenu(listItem!, { 
+      clientX: window.innerWidth + 300, 
+      clientY: Math.max(window.innerHeight, 500) + 300 
+    });
+    
+    expect(mockOnClickContextMenu).toHaveBeenCalled();
+  });
+
   it('closes the context menu when onClose is called', () => {
     renderListItem({ isOpen: true });
     mockOnClose();
diff --git a/src/components/mail/tray/__test__/TrayList.test.tsx b/src/components/mail/tray/__test__/TrayList.test.tsx
index 3735ce5..6408288 100644
--- a/src/components/mail/tray/__test__/TrayList.test.tsx
+++ b/src/components/mail/tray/__test__/TrayList.test.tsx
@@ -182,4 +182,18 @@ describe('TrayList', () => {
 
     expect(screen.getByText('John Doe')).toBeInTheDocument();
   });
+
+  it('should render without onLoadMore and onMailSelected (using defaults)', () => {
+    render(<TrayList mails={mockMails} loading={false} />);
+    expect(screen.getByText('John Doe')).toBeInTheDocument();
+  });
+
+  it('calls default onMailSelected and onLoadMore functions safely', () => {
+    const { getAllByRole } = render(
+      <TrayList mails={mockMails} loading={false} />
+    );
+    
+    const emailButtons = getAllByRole('button');
+    expect(() => fireEvent.click(emailButtons[0])).not.toThrow();
+  });
 });
diff --git a/src/components/menu/__test__/Menu.test.tsx b/src/components/menu/__test__/Menu.test.tsx
index 3297be0..8c62fc3 100644
--- a/src/components/menu/__test__/Menu.test.tsx
+++ b/src/components/menu/__test__/Menu.test.tsx
@@ -126,4 +126,99 @@ describe('Menu Component', () => {
 
     expect(option1).toHaveClass('bg-gray-5');
   });
+
+  it('triggers onClick on node item when Enter is pressed', () => {
+    const nodeClick = vi.fn();
+    const menuWithNode: Array<MenuItemType<{ id: number; name: string }>> = [
+      { node: <button onClick={nodeClick}>Node Item</button> },
+    ];
+    render(<Menu {...defaultProps} menu={menuWithNode} />);
+    fireEvent.keyDown(document, { key: 'ArrowDown' });
+    fireEvent.keyDown(document, { key: 'Enter' });
+    expect(nodeClick).toHaveBeenCalled();
+  });
+
+  it('handles node item without onClick on Enter press without errors', () => {
+    const menuWithNode: Array<MenuItemType<{ id: number; name: string }>> = [
+      { node: <span>No Click Node</span> },
+    ];
+    render(<Menu {...defaultProps} menu={menuWithNode} />);
+    fireEvent.keyDown(document, { key: 'ArrowDown' });
+    fireEvent.keyDown(document, { key: 'Enter' });
+    expect(handleMenuClose).toHaveBeenCalled();
+  });
+
+  it('calls onClick handler on item click when defined', () => {
+    const onClickHandler = vi.fn();
+    const menuWithOnClick: Array<MenuItemType<{ id: number; name: string }>> = [
+      { name: 'Clickable', onClick: onClickHandler },
+    ];
+    const { getByText } = render(<Menu {...defaultProps} menu={menuWithOnClick} />);
+    fireEvent.click(getByText('Clickable'));
+    expect(onClickHandler).toHaveBeenCalled();
+  });
+
+  it('renders keyboard shortcut icon when provided', () => {
+    const menuWithShortcutIcon: Array<MenuItemType<{ id: number; name: string }>> = [
+      {
+        name: 'With Icon Shortcut',
+        action: vi.fn(),
+        keyboardShortcutOptions: {
+          keyboardShortcutIcon: MockIcon,
+          keyboardShortcutText: 'Ctrl+S',
+        },
+      },
+    ];
+    const { getByText, getAllByTestId } = render(<Menu {...defaultProps} menu={menuWithShortcutIcon} />);
+    expect(getByText('Ctrl+S')).toBeInTheDocument();
+    expect(getAllByTestId('mock-icon').length).toBeGreaterThan(0);
+  });
+
+  it('renders keyboard shortcut options without text', () => {
+    const menuWithIconOnly: Array<MenuItemType<{ id: number; name: string }>> = [
+      {
+        name: 'Icon Only Shortcut',
+        action: vi.fn(),
+        keyboardShortcutOptions: {
+          keyboardShortcutIcon: MockIcon,
+        },
+      },
+    ];
+    const { getByText } = render(<Menu {...defaultProps} menu={menuWithIconOnly} />);
+    expect(getByText('Icon Only Shortcut')).toBeInTheDocument();
+  });
+
+  it('handles Enter with no selection and no genericEnterKey without errors', () => {
+    const menuWithItem: Array<MenuItemType<{ id: number; name: string }>> = [
+      { name: 'Item', action: vi.fn() },
+    ];
+    render(
+      <Menu
+        item={{ id: 1, name: 'Sample' }}
+        menu={menuWithItem}
+        isOpen={true}
+        handleMenuClose={handleMenuClose}
+      />,
+    );
+    fireEvent.keyDown(document, { key: 'Enter' });
+    expect(handleMenuClose).toHaveBeenCalled();
+  });
+
+  it('returns null from ArrowUp when all items are unclickable', () => {
+    const allDisabledMenu: Array<MenuItemType<{ id: number; name: string }>> = [
+      { separator: true },
+      { name: 'Disabled', disabled: () => true },
+    ];
+    render(<Menu {...defaultProps} menu={allDisabledMenu} />);
+    fireEvent.keyDown(document, { key: 'ArrowUp' });
+  });
+
+  it('returns null from ArrowDown when all items are unclickable', () => {
+    const allDisabledMenu: Array<MenuItemType<{ id: number; name: string }>> = [
+      { separator: true },
+      { name: 'Disabled', disabled: () => true },
+    ];
+    render(<Menu {...defaultProps} menu={allDisabledMenu} />);
+    fireEvent.keyDown(document, { key: 'ArrowDown' });
+  });
 });