import 'reflect-metadata';

import {
    AutoNewLineService,
} from './../auto-new-line/auto-new-line.service';

import {
    MaxTextLengthService,
} from './max-text-length.service';

const initMaxTextLengthService = (
    autoNewLineService?: AutoNewLineService,
) => {
    return new MaxTextLengthService(
        autoNewLineService,
    );
};

describe('getMaximumTextLength', () => {
    const initGetMaximumTextLengthData = () => {
        const autoNewLineService = {} as AutoNewLineService;
        autoNewLineService.getTextWidth = jest.fn()
            .mockReturnValueOnce(10)
            .mockReturnValueOnce(20);
        const maxTextLengthService = initMaxTextLengthService(
            autoNewLineService,
        );

        return {
            autoNewLineService,
            maxTextLengthService,
        };
    };

    // tslint:disable-next-line
    test('Calls autoNewLineService.getTextWidth', () => {
        const {
            autoNewLineService,
            maxTextLengthService,
        } = initGetMaximumTextLengthData();

        maxTextLengthService.getMaximumTextLength(
            '12px',
            'Arial',
            29,
        );

        expect(autoNewLineService.getTextWidth).toHaveBeenCalledWith(
            'W',
            '12px',
            'Arial',
        );
    });

    // tslint:disable-next-line
    test('Returns the character length that will fit within the  autoNewLineService.getTextWidth for each character of text', () => {
        const {
            maxTextLengthService,
        } = initGetMaximumTextLengthData();

        const result = maxTextLengthService.getMaximumTextLength(
            '12px',
            'Arial',
            29,
        );

        expect(result).toBe(2);
    });

    test('Uses a different character if specified in the startup', () => {
        const {
            autoNewLineService,
            maxTextLengthService,
        } = initGetMaximumTextLengthData();

        maxTextLengthService.getMaximumTextLength(
            '12px',
            'Arial',
            19,
            'F',
        );

        expect(autoNewLineService.getTextWidth).toHaveBeenCalledWith(
            'F',
            '12px',
            'Arial',
        );
    });
});