add getZip method

package.json

@@ -6,9 +6,9 @@
   "scripts": {
     "clear": "rimraf lib && rimraf dist && rimraf coverage",
     "build": "npm run clear && babel --out-dir lib src",
-    "build:watch": "npm run build -- --watch",
     "build:umd": "./node_modules/.bin/webpack --output-filename viacep.umd.js --mode development",
     "build:umd:min": "./node_modules/.bin/webpack --output-filename viacep.umd.min.js --mode production ",
+    "build:watch": "npm run build:umd -- --watch",
     "build:all": "npm run build && npm run build:umd && npm run build:umd:min",
     "lint": "./node_modules/.bin/eslint src/*.js",
     "test": "jest",

src/address.js

@@ -4,6 +4,7 @@ function searchZip(type, ...url) {
 
 export default function address() {
   return {
+    getZip: searchZip.bind(this, this.type),
     getJson: searchZip.bind(this, 'json'),
     getXml: searchZip.bind(this, 'xml'),
   };

src/index.js

@@ -9,6 +9,7 @@ import { API_URL } from './config';
 export default class ViaCep {
   constructor(options) {
     this.apiURL = options.apiURL || API_URL;
+    this.type = options.type || 'json';
 
     this.zipCod = zipCod.bind(this)();
     this.address = address.bind(this)();
@@ -17,6 +18,11 @@ export default class ViaCep {
   request(url) {
     this.url = url;
 
-    return fetch(url).then(data => data.json());
+    return fetch(url, {
+      mode: 'no-cors',
+      headers: {
+        'Content-Type': 'application/x-www-form-urlencoded',
+      },
+    });
   }
 }

src/zipCod.js

@@ -4,6 +4,7 @@ function searchCod(type, cep) {
 
 export default function zipCod() {
   return {
+    getZip: searchCod.bind(this, this.type),
     getJson: searchCod.bind(this, 'json'),
     getXml: searchCod.bind(this, 'xml'),
     getPiped: searchCod.bind(this, 'piped'),

tests/address.spec.js

@@ -49,14 +49,56 @@ describe('address', () => {
 
   describe('smoke tests', () => {
     it('should address method is exist', () => {
+      expect(viacep.address).to.exist;
+    });
+
+    it('should getZip method in address is exist', () => {
+      expect(viacep.address.getZip).to.exist;
+    });
+
+    it('should getJson method in address is exist', () => {
       expect(viacep.address.getJson).to.exist;
     });
 
-    it('should address method is exist', () => {
+    it('should getXml method in address is exist', () => {
       expect(viacep.address.getXml).to.exist;
     });
   });
 
+  describe('getZip', () => {
+    let viacepZipTest;
+
+    beforeEach(() => {
+      viacepZipTest = new ViaCep({
+        type: 'xml'
+      });
+    });
+
+    it('should call fetch method', () => {
+      viacepZipTest.address.getZip();
+      expect(stubedFetch).to.have.been.calledOnce;
+    });
+
+    it('should call fetch the correct URL', () => {
+      viacepZipTest.address
+      .getZip('RS', 'vitoria', 'adalberto')
+      expect(stubedFetch).to.have.be
+        .calledWith('https://viacep.com.br/ws/RS/vitoria/adalberto/xml/');
+
+      viacepZipTest.address
+      .getZip('uf', 'city', 'street')
+      expect(stubedFetch).to.have.be
+        .calledWith('https://viacep.com.br/ws/uf/city/street/xml/');
+    });
+
+    it('should return the correct data from the promise', () => {
+      promise.resolves(retorno);
+      const zipcods = viacepZipTest.address.getZip('es', 'vitoria', 'adalberto');
+      expect(zipcods.resolveValue).to.be.eql(retorno);
+    });
+
+  });
+
   describe('getJson', () => {
     it('should call fetch method', () => {
       viacep.address.getJson();

tests/zipcod.spec.js

@@ -29,6 +29,10 @@ describe('zipCod', () => {
       expect(viacep.zipCod).to.be.exist;
     });
 
+    it('should getZip method exist', () => {
+      expect(viacep.zipCod.getZip).to.be.exist;
+    });
+
     it('should getJson method exist', () => {
       expect(viacep.zipCod.getJson).to.be.exist;
     });
@@ -46,6 +50,37 @@ describe('zipCod', () => {
     });
   });
 
+  describe('getZip', () => {
+    let viacepZipTest;
+
+    beforeEach(() => {
+      viacepZipTest = new ViaCep({
+        type: 'piped'
+      });
+    })
+
+    it('should call fetch method', () => {
+      viacepZipTest.zipCod.getZip()
+      expect(stubedFetch).to.have.been.calledOnce;
+    });
+
+    it('should call fetch the correct URL', () => {
+      viacepZipTest.zipCod.getZip('29027422')
+      expect(stubedFetch).to.have.be
+        .calledWith('https://viacep.com.br/ws/29027422/piped/');
+
+      viacepZipTest.zipCod.getZip('29010250')
+      expect(stubedFetch).to.have.be
+        .calledWith('https://viacep.com.br/ws/29010250/piped/');
+    });
+
+    it('should return the correct data from the promise', () => {
+      promise.resolves({ endereco: 'rua alberto' });
+      const address = viacepZipTest.zipCod.getZip('29010250');
+      expect(address.resolveValue).to.be.eql({ endereco: 'rua alberto' });
+    });
+  });
+
   describe('getJson', () => {
     it('should call fetch method', () => {
       viacep.zipCod.getJson()