const assert = require('assert');

import ExcellentExport, { ConvertOptions, SheetOptions } from '../src/excellentexport';


describe('convert() API', function() {
    describe('Negative tests', function() {

        beforeEach(() => {
            window.URL.createObjectURL = () => "blob:fake_URL";

            const element = document.createElement("div");
            element.innerHTML = '<a id="anchor">Link</a>';

            document.body.appendChild(element);
        });

        it('should fail if CSV has more than one sheet', function() {
            const options = {
                anchor: 'anchor',
                filename: 'data_from_array',
                format: 'csv'
            } as ConvertOptions;

            const sheets = [{
                name: 'Sheet Name Here 1',
                from: {}
            }, {
                name: 'Sheet Number 2',
                from: {}
            }];

            assert.throws(() => {
                ExcellentExport.convert(options, sheets)
            }, Error);

        });

        it('should fail if sheet does not have name', function() {
            const options = {
                anchor: 'anchor',
                filename: 'data_from_array',
                format: 'csv'
            } as ConvertOptions;

            const sheets = [{
                // name: 'Sheet Name Here 1',
                from: {}
            }] as SheetOptions[];

            assert.throws(() => {
                ExcellentExport.convert(options, sheets)
            }, Error);

        });

        it('should fail if sheet does not have data', function() {
            const options = {
                anchor: 'anchor',
                filename: 'data_from_array',
                format: 'csv'
            } as ConvertOptions;

            const sheets = [{
                name: 'Sheet Name Here 1',
                // from: {}
            }] as SheetOptions[];

            assert.throws(() => {
                ExcellentExport.convert(options, sheets)
            }, Error);

        });

        it('should fail if there is not format defined', function() {
            const options = {
                anchor: 'anchor',
                filename: 'data_from_array',
                //format: 'csv'
            } as ConvertOptions;

            const sheets = [{
                name: 'Sheet Name Here 1',
                from: {}
            }];

            assert.throws(() => {
                ExcellentExport.convert(options, sheets)
            }, Error);

        });

        it('should fail if anchor is not defined/valid', function() {
            const options = {
                anchor: 'anchor1235d5d5d5d_invalid',
                filename: 'data_from_array',
                format: 'csv'
            } as ConvertOptions;

            const sheets = [{
                name: 'Sheet Name Here 1',
                from: {}
            }];

            assert.throws(() => {
                ExcellentExport.convert(options, sheets)
            }, Error);

        });

        it('should fail if no anchor and not openAsDownload', function() {
            const options = {
                filename: 'data_from_array',
                format: 'csv'
            } as ConvertOptions;

            const sheets = [{
                name: 'Sheet Name Here 1',
                from: {}
            }];

            assert.throws(() => {
                ExcellentExport.convert(options, sheets)
            }, Error);

        });
    });
});