import { formatAddressLine } from '../features/order-ship/utils/address';

describe( 'formatAddressLine', () => {
	// ---- Positive tests ----

	it( 'formats a full address into a comma-separated string', () => {
		const result = formatAddressLine( {
			name: 'John Smith',
			address_1: '12 Baker Street',
			city: 'London',
			postcode: 'NW1 6XE',
			country: 'GB',
		} );
		expect( result ).toContain( 'John Smith' );
		expect( result ).toContain( '12 Baker Street' );
		expect( result ).toContain( 'London' );
		expect( result ).toContain( 'NW1 6XE' );
		expect( result ).toContain( 'GB' );
	} );

	it( 'includes address_2 when provided', () => {
		const result = formatAddressLine( {
			address_1: '12 Baker Street',
			address_2: 'Flat 4',
			city: 'London',
			country: 'GB',
			postcode: 'NW1 6XE',
		} );
		expect( result ).toContain( 'Flat 4' );
		expect( result ).toContain( '12 Baker Street' );
	} );

	it( 'combines city and state with a comma', () => {
		const result = formatAddressLine( {
			city: 'Springfield',
			state: 'IL',
			country: 'US',
			postcode: '62701',
		} );
		expect( result ).toContain( 'Springfield, IL' );
	} );

	it( 'works with only a country', () => {
		const result = formatAddressLine( { country: 'GB' } );
		expect( result ).toBe( 'GB' );
	} );

	// ---- Negative tests ----

	it( 'returns dash for null input', () => {
		expect( formatAddressLine( null ) ).toBe( '—' );
	} );

	it( 'returns dash for empty object', () => {
		expect( formatAddressLine( {} ) ).toBe( '—' );
	} );

	it( 'omits blank fields — no consecutive commas', () => {
		const result = formatAddressLine( {
			name: 'Jane',
			address_1: '',
			city: '',
			postcode: 'M1 1AA',
			country: 'GB',
		} );
		expect( result ).not.toMatch( /,\s*,/ );
		expect( result ).toContain( 'Jane' );
	} );

	it( 'omits undefined fields gracefully', () => {
		const result = formatAddressLine( {
			name: 'Test',
			address_1: undefined,
			city: 'London',
		} );
		expect( result ).toContain( 'Test' );
		expect( result ).toContain( 'London' );
	} );
} );