import WaveSurfer from '../src/wavesurfer.js';

/** @test {util} */
describe('util:', function() {
    /** @test {getId} */
    it('getId returns a random string', function() {
        expect(WaveSurfer.util.getId()).toStartWith('wavesurfer_');
    });

    /** @test {min} */
    it('min returns the smallest number in the provided array', function() {
        expect(WaveSurfer.util.min([0, 1, 1.1, 100, -1])).toEqual(-1);
    });

    /** @test {min} */
    it('min returns +Infinity for an empty array', function() {
        expect(WaveSurfer.util.min([])).toEqual(+Infinity);
    });

    /** @test {max} */
    it('max returns the largest number in the provided array', function() {
        expect(WaveSurfer.util.max([0, 1, 1.1, 100, -1])).toEqual(100);
    });

    /** @test {max} */
    it('max returns -Infinity for an empty array', function() {
        expect(WaveSurfer.util.max([])).toEqual(-Infinity);
    });
});