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import initCheckFormState from '~/pages/projects/merge_requests/edit/check_form_state';
describe('Check form state', () => {
const findInput = () => document.querySelector('#form-input');
let beforeUnloadEvent;
let setDialogContent;
beforeEach(() => {
setFixtures(`
<form class="merge-request-form">
<input type="text" name="test" id="form-input"/>
</form>`);
beforeUnloadEvent = new Event('beforeunload');
jest.spyOn(beforeUnloadEvent, 'preventDefault');
setDialogContent = jest.spyOn(beforeUnloadEvent, 'returnValue', 'set');
initCheckFormState();
});
afterEach(() => {
beforeUnloadEvent.preventDefault.mockRestore();
setDialogContent.mockRestore();
});
it('shows confirmation dialog when there are unsaved changes', () => {
findInput().value = 'value changed';
window.dispatchEvent(beforeUnloadEvent);
expect(beforeUnloadEvent.preventDefault).toHaveBeenCalled();
expect(setDialogContent).toHaveBeenCalledWith('');
});
it('does not show confirmation dialog when there are no unsaved changes', () => {
window.dispatchEvent(beforeUnloadEvent);
expect(beforeUnloadEvent.preventDefault).not.toHaveBeenCalled();
expect(setDialogContent).not.toHaveBeenCalled();
});
});
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