axios/test/specs/transform.spec.js

import AxiosError from '../../lib/core/AxiosError';

describe('transform', function () {
  beforeEach(function () {
    jasmine.Ajax.install();
  });

  afterEach(function () {
    jasmine.Ajax.uninstall();
  });

  it('should transform JSON to string', function (done) {
    const data = {
      foo: 'bar',
    };

    axios.post('/foo', data);

    getAjaxRequest().then(function (request) {
      expect(request.params).toEqual('{"foo":"bar"}');
      done();
    });
  });

  it('should transform string to JSON', function (done) {
    let response;

    axios('/foo').then(function (data) {
      response = data;
    });

    getAjaxRequest().then(function (request) {
      request.respondWith({
        status: 200,
        responseText: '{"foo": "bar"}',
      });

      setTimeout(function () {
        expect(typeof response.data).toEqual('object');
        expect(response.data.foo).toEqual('bar');
        done();
      }, 100);
    });
  });

  it('should throw a SyntaxError if JSON parsing failed and responseType is "json" if silentJSONParsing is false', function (done) {
    let thrown;

    axios({
      url: '/foo',
      responseType: 'json',
      transitional: { silentJSONParsing: false },
    }).then(
      function () {
        done(new Error('should fail'));
      },
      function (err) {
        thrown = err;
      }
    );

    getAjaxRequest().then(function (request) {
      request.respondWith({
        status: 200,
        responseText: '{foo": "bar"}', // JSON SyntaxError
      });

      setTimeout(function () {
        expect(thrown).toBeTruthy();
        expect(thrown.name).toContain('SyntaxError');
        expect(thrown.code).toEqual(AxiosError.ERR_BAD_RESPONSE);
        done();
      }, 100);
    });
  });

  it('should send data as JSON if request content-type is application/json', function (done) {
    let response;

    axios.post('/foo', 123, { headers: { 'Content-Type': 'application/json' } }).then(
      function (_response) {
        response = _response;
      },
      function (err) {
        done(err);
      }
    );

    getAjaxRequest().then(function (request) {
      request.respondWith({
        status: 200,
        responseText: '',
      });

      setTimeout(function () {
        expect(response).toBeTruthy();
        expect(request.requestHeaders['Content-Type']).toBe('application/json');
        expect(JSON.parse(request.params)).toBe(123);
        done();
      }, 100);
    });
  });

  it('should not assume JSON if responseType is not `json`', function (done) {
    let response;

    axios
      .get('/foo', {
        responseType: 'text',
        transitional: {
          forcedJSONParsing: false,
        },
      })
      .then(
        function (_response) {
          response = _response;
        },
        function (err) {
          done(err);
        }
      );

    const rawData = '{"x":1}';

    getAjaxRequest().then(function (request) {
      request.respondWith({
        status: 200,
        responseText: rawData,
      });

      setTimeout(function () {
        expect(response).toBeTruthy();
        expect(response.data).toBe(rawData);
        done();
      }, 100);
    });
  });

  it('should override default transform', function (done) {
    const data = {
      foo: 'bar',
    };

    axios.post('/foo', data, {
      transformRequest: function (data) {
        return data;
      },
    });

    getAjaxRequest().then(function (request) {
      expect(typeof request.params).toEqual('object');
      done();
    });
  });

  it('should allow an Array of transformers', function (done) {
    const data = {
      foo: 'bar',
    };

    axios.post('/foo', data, {
      transformRequest: axios.defaults.transformRequest.concat(function (data) {
        return data.replace('bar', 'baz');
      }),
    });

    getAjaxRequest().then(function (request) {
      expect(request.params).toEqual('{"foo":"baz"}');
      done();
    });
  });

  it('should allowing mutating headers', function (done) {
    const token = Math.floor(Math.random() * Math.pow(2, 64)).toString(36);

    axios('/foo', {
      transformRequest: function (data, headers) {
        headers['X-Authorization'] = token;
      },
    });

    getAjaxRequest().then(function (request) {
      expect(request.requestHeaders['X-Authorization']).toEqual(token);
      done();
    });
  });

  it("should normalize 'content-type' header when using a custom transformRequest", function (done) {
    const data = {
      foo: 'bar',
    };

    axios.post('/foo', data, {
      headers: { 'content-type': 'application/x-www-form-urlencoded' },
      transformRequest: [
        function () {
          return 'aa=44';
        },
      ],
    });

    getAjaxRequest().then(function (request) {
      expect(request.requestHeaders['Content-Type']).toEqual('application/x-www-form-urlencoded');
      done();
    });
  });

  it('should return response.data as parsed JSON object when responseType is json', function (done) {
    const instance = axios.create({
      baseURL: '/api',
      transformResponse: [
        function (data) {
          return data;
        },
      ],
      responseType: 'json',
    });

    instance
      .get('my/endpoint', { responseType: 'json' })
      .then((response) => {
        expect(typeof response).toBe('object');
        done();
      })
      .catch((err) => {
        done(err);
      });

    getAjaxRequest().then(function (request) {
      request.respondWith({
        status: 200,
        responseText: '{"key1": "value1"}',
      });
    });
  });
});