axios/test/specs/helpers/buildURL.spec.js

import buildURL from '../../../lib/helpers/buildURL';

describe('helpers::buildURL', function () {
  it('should support null params', function () {
    expect(buildURL('/foo')).toEqual('/foo');
  });

  it('should support params', function () {
    expect(
      buildURL('/foo', {
        foo: 'bar',
        isUndefined: undefined,
        isNull: null,
      })
    ).toEqual('/foo?foo=bar');
  });

  it('should support sending raw params to custom serializer func', function () {
    const serializer = sinon.stub();
    const params = { foo: 'bar' };
    serializer.returns('foo=bar');
    expect(
      buildURL(
        '/foo',
        {
          foo: 'bar',
        },
        {
          serialize: serializer,
        }
      )
    ).toEqual('/foo?foo=bar');
    expect(serializer.calledOnce).toBe(true);
    expect(serializer.calledWith(params)).toBe(true);
  });

  it('should support object params', function () {
    expect(
      buildURL('/foo', {
        foo: {
          bar: 'baz',
        },
      })
    ).toEqual('/foo?foo%5Bbar%5D=baz');
  });

  it('should support date params', function () {
    const date = new Date();

    expect(
      buildURL('/foo', {
        date: date,
      })
    ).toEqual('/foo?date=' + date.toISOString());
  });

  it('should support array params with encode', function () {
    expect(
      buildURL('/foo', {
        foo: ['bar', 'baz'],
      })
    ).toEqual('/foo?foo%5B%5D=bar&foo%5B%5D=baz');
  });

  it('should support special char params', function () {
    expect(
      buildURL('/foo', {
        foo: ':$, ',
      })
    ).toEqual('/foo?foo=:$,+');
  });

  it('should support existing params', function () {
    expect(
      buildURL('/foo?foo=bar', {
        bar: 'baz',
      })
    ).toEqual('/foo?foo=bar&bar=baz');
  });

  it('should support "length" parameter', function () {
    expect(
      buildURL('/foo', {
        query: 'bar',
        start: 0,
        length: 5,
      })
    ).toEqual('/foo?query=bar&start=0&length=5');
  });

  it('should correct discard url hash mark', function () {
    expect(
      buildURL('/foo?foo=bar#hash', {
        query: 'baz',
      })
    ).toEqual('/foo?foo=bar&query=baz');
  });

  it('should support URLSearchParams', function () {
    expect(buildURL('/foo', new URLSearchParams('bar=baz'))).toEqual('/foo?bar=baz');
  });

  it('should support custom serialize function', function () {
    const params = {
      x: 1,
    };

    const options = {
      serialize: (thisParams, thisOptions) => {
        expect(thisParams).toEqual(params);
        expect(thisOptions).toEqual(options);
        return 'rendered';
      },
    };

    expect(buildURL('/foo', params, options)).toEqual('/foo?rendered');

    const customSerializer = (thisParams) => {
      expect(thisParams).toEqual(params);
      return 'rendered';
    };

    expect(buildURL('/foo', params, customSerializer)).toEqual('/foo?rendered');
  });
});