import {
    FontNetworkError,
    FontResponseError,
} from './errors';

describe('FontNetworkError', () => {
    it('has correct name', () => {
        const err = new FontNetworkError();
        expect(err.name).toBe('FontNetworkError');
    });

    it('is instance of Error', () => {
        expect(new FontNetworkError()).toBeInstanceOf(Error);
    });

    it('stores cause', () => {
        const cause = new Error('network down');
        const err = new FontNetworkError(cause);
        expect(err.cause).toBe(cause);
    });

    it('has default message', () => {
        expect(new FontNetworkError().message).toBe('Failed to fetch fonts from proxy API');
    });
});

describe('FontResponseError', () => {
    it('has correct name', () => {
        const err = new FontResponseError('response', undefined);
        expect(err.name).toBe('FontResponseError');
    });

    it('is instance of Error', () => {
        expect(new FontResponseError('response.fonts', null)).toBeInstanceOf(Error);
    });

    it('stores field', () => {
        const err = new FontResponseError('response.fonts', 42);
        expect(err.field).toBe('response.fonts');
    });

    it('stores received value', () => {
        const err = new FontResponseError('response.fonts', 42);
        expect(err.received).toBe(42);
    });

    it('message includes field name', () => {
        const err = new FontResponseError('response.fonts', null);
        expect(err.message).toContain('response.fonts');
    });
});