nativescript-dev-webpack/index.spec.ts at master · NativeScript/nativescript-dev-webpack

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import { getConvertedExternals } from './index';

describe('index', () => {
    describe('getConvertedExternals', () => {
        it('returns empty array when nullable is passed', () => {
            const actualResult = getConvertedExternals(null);
            expect(actualResult).toEqual([]);
        });

        const testCases = [
            {
                input: ['nativescript-vue'],
                expectedOutput: [/^nativescript-vue((\/.*)|$)/]
            },
            {
                input: ['nativescript-vue', 'nativescript-angular'],
                expectedOutput: [/^nativescript-vue((\/.*)|$)/, /^nativescript-angular((\/.*)|$)/]
            }
        ];

        testCases.forEach(testCase => {
            it('converts passed strings to regular expressions', () => {
                const actualResult = getConvertedExternals(testCase.input);
                expect(actualResult).toEqual(testCase.expectedOutput);
            });

            it(`returns regular expressions which match expected modules and their subdirs, for input ${testCase.input}`, () => {
                [
                    'nativescript-vue',
                    'nativescript-vue/subdir',
                    'nativescript-vue/subdir/subdir-2'
                ].forEach(testString => {
                    const regExpsExternals = getConvertedExternals(testCase.input);
                    const result = regExpsExternals.some((regExp: RegExp) => !!regExp.exec(testString));
                    expect(result).toBe(true, `String ${testString} does not match any of the regular expressions: ${regExpsExternals.join(', ')}`);
                });
            });

            it(`returns regular expressions which does not match expected modules and their subdirs, for input ${testCase.input}`, () => {
                [
                    'nativescript-facebook',
                    'nativescript-facebook/nativescript-vue',
                    'main-plugin/subdir/nativescript-vue',
                    'nativescript-vue-template-compiler',
                    'nativescript-vue-template-compiler/subdir'
                ].forEach(testString => {
                    const regExpsExternals = getConvertedExternals(testCase.input);
                    const result = regExpsExternals.some((regExp: RegExp) => !!regExp.exec(testString));
                    expect(result).toBe(false, `String ${testString} matches some of the regular expressions: ${regExpsExternals.join(', ')}`);
                });
            });
        });
    });
});

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