Better tests for btoa

test/specs/__setupBasicAuthTest.js

+var axios = require('../../index');
+
+module.exports = function setupBasicAuthTest() {
+  beforeEach(function () {
+    jasmine.Ajax.install();
+  });
+
+  afterEach(function () {
+    jasmine.Ajax.uninstall();
+  });
+
+  it('should accept HTTP Basic auth with username/password', function (done) {
+    axios({
+      url: '/foo',
+      auth: {
+        username: 'Aladdin',
+        password: 'open sesame'
+      }
+    });
+
+    setTimeout(function () {
+      var request = jasmine.Ajax.requests.mostRecent();
+
+      expect(request.requestHeaders['Authorization']).toEqual('Basic: QWxhZGRpbjpvcGVuIHNlc2FtZQ==');
+      done();
+    }, 0);
+  });
+
+  it('should fail to encode HTTP Basic auth credentials with non-Latin1 characters', function (done) {
+    axios({
+      url: '/foo',
+      auth: {
+        username: 'Aladßç£☃din',
+        password: 'open sesame'
+      }
+    }).then(function(response) {
+      done(new Error('Should not succeed to make a HTTP Basic auth request with non-latin1 chars in credentials.'));
+    }).catch(function(error) {
+      expect(error.message).toEqual('INVALID_CHARACTER_ERR: DOM Exception 5');
+      done();
+    });
+  });
+};

test/specs/basicAuth.spec.js

-var axios = require('../../index');
+var setupBasicAuthTest = require('./__setupBasicAuthTest');
 
 describe('basicAuth without btoa polyfill', function () {
-  beforeEach(function () {
-    jasmine.Ajax.install();
-  });
-
-  afterEach(function () {
-    jasmine.Ajax.uninstall();
-  });
-
-  it('should accept HTTP Basic auth with username/password', function (done) {
-    axios({
-      url: '/foo',
-      auth: {
-        username: 'Aladdin',
-        password: 'open sesame'
-      }
-    });
-
-    setTimeout(function () {
-      var request = jasmine.Ajax.requests.mostRecent();
-
-      expect(request.requestHeaders['Authorization']).toEqual('Basic: QWxhZGRpbjpvcGVuIHNlc2FtZQ==');
-      done();
-    }, 0);
-  });
-
-  it('should fail to encode HTTP Basic auth credentials with non-Latin1 characters', function (done) {
-    axios({
-      url: '/foo',
-      auth: {
-        username: 'Aladßç£☃din',
-        password: 'open sesame'
-      }
-    }).then(function(response) {
-      done(new Error('Should not succeed to make a HTTP Basic auth request with non-latin1 chars in credentials.'))
-    }).catch(function(error) {
-      expect(error.message).toEqual('INVALID_CHARACTER_ERR: DOM Exception 5')
-      done()
-    });
-  });
+  setupBasicAuthTest();
 });

test/specs/basicAuthWithPolyfill.spec.js

-var axios = require('../../index');
+var setupBasicAuthTest = require('./__setupBasicAuthTest');
+var window_btoa;
 
 describe('basicAuth with btoa polyfill', function () {
   beforeAll(function() {
-    this.original_btoa = window.btoa;
+    window_btoa = window.btoa;
     window.btoa = undefined;
-  })
-
-  afterAll(function() {
-    window.btoa = this.original_btoa;
-  })
-
-  beforeEach(function () {
-    jasmine.Ajax.install();
   });
 
-  afterEach(function () {
-    jasmine.Ajax.uninstall();
+  afterAll(function() {
+    window.btoa = window_btoa;
+    window_btoa = undefined;
   });
 
-  it('should accept HTTP Basic auth with username/password', function (done) {
-    axios({
-      url: '/foo',
-      auth: {
-        username: 'Aladdin',
-        password: 'open sesame'
-      }
-    });
-
-    setTimeout(function () {
-      var request = jasmine.Ajax.requests.mostRecent();
-
-      expect(request.requestHeaders['Authorization']).toEqual('Basic: QWxhZGRpbjpvcGVuIHNlc2FtZQ==');
-      done();
-    }, 0);
+  it('should not have native window.btoa', function () {
+    expect(window.btoa).toEqual(undefined);
   });
 
-  it('should fail to encode HTTP Basic auth credentials with non-Latin1 characters', function (done) {
-    axios({
-      url: '/foo',
-      auth: {
-        username: 'Aladßç£☃din',
-        password: 'open sesame'
-      }
-    }).then(function(response) {
-      done(new Error('Should not succeed to make a HTTP Basic auth request with non-latin1 chars in credentials.'))
-    }).catch(function(error) {
-      expect(error.message).toEqual('\'btoa\' failed: The string to be encoded contains characters outside of the Latin1 range.')
-      done()
-    });
-  });
+  setupBasicAuthTest();
 });
+

test/specs/helpers/btoa.spec.js

+var __btoa = require('../../../lib/helpers/btoa');
+
+describe('btoa polyfill', function () {
+  it('should behave the same as native window.btoa', function () {
+    var data = 'Hello, world';
+    expect(__btoa(data)).toEqual(window.btoa(data));
+  });
+
+  it('should throw an error if char is out of range 0xFF', function () {
+    var err1, err2;
+    var data = 'I ♡ Unicode!';
+    
+    try {
+      window.btoa(data);
+    } catch (e) {
+      err1 = e;
+    }
+
+    try {
+      __btoa(data);
+    } catch (e) {
+      err2 = e;
+    }
+
+    expect(err1.message).toEqual(err2.message);
+  });
+});