Convert to chai since we don’t support IE8

Author: kpdecker

Gruntfile.js

@@ -53,7 +53,8 @@ module.exports = function(grunt) {
     mochaTest: {
       test: {
         options: {
-          require: ['babel/register']
+          require: ['babel/register'],
+          reporter: 'dot'
         },
         src: ['test/**/*.js']
       }

package.json

@@ -31,9 +31,9 @@
     "babel": "^5.8.20",
     "babel-core": "^5.8.20",
     "babel-loader": "^5.3.2",
+    "chai": "^3.2.0",
     "colors": "^1.1.0",
     "eslint": "^1.0.0",
-    "expect.js": "^0.3.1",
     "grunt": "^0.4.5",
     "grunt-babel": "^5.0.1",
     "grunt-clean": "^0.4.0",

test/convert/dmp.js

@@ -1,7 +1,7 @@
 import {convertChangesToDMP} from '../../lib/convert/dmp';
 import {diffWords} from '../../lib/diff/word';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('convertToDMP', function() {
   it('should output diff-match-patch format', function() {

test/diff/character.js

@@ -1,7 +1,7 @@
 import {diffChars} from '../../lib/diff/character';
 import {convertChangesToXML} from '../../lib/convert/xml';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('diff/character', function() {
   describe('#diffChars', function() {

test/diff/css.js

@@ -1,7 +1,7 @@
 import {diffCss} from '../../lib/diff/css';
 import {convertChangesToXML} from '../../lib/convert/xml';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('diff/css', function() {
   describe('#diffCss', function() {

test/diff/json.js

@@ -1,7 +1,7 @@
 import {diffJson, canonicalize} from '../../lib/diff/json';
 import {convertChangesToXML} from '../../lib/convert/xml';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('diff/json', function() {
   describe('#diffJson', function() {
@@ -70,7 +70,7 @@ describe('diff/json', function() {
           circular,
           {foo: 123, bar: {}}
         );
-      }).to.throwError(/circular|cyclic/i);
+      }).to['throw'](/circular|cyclic/i);
     });
   });
 

test/diff/line.js

@@ -1,7 +1,7 @@
 import {diffLines, diffTrimmedLines} from '../../lib/diff/line';
 import {convertChangesToXML} from '../../lib/convert/xml';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('diff/line', function() {
   // Line Diff

test/diff/sentence.js

@@ -1,7 +1,7 @@
 import {diffSentences} from '../../lib/diff/sentence';
 import {convertChangesToXML} from '../../lib/convert/xml';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('diff/sentence', function() {
   describe('#diffSentences', function() {

test/diff/word.js

@@ -1,7 +1,7 @@
 import {wordDiff, diffWords, diffWordsWithSpace} from '../../lib/diff/word';
 import {convertChangesToXML} from '../../lib/convert/xml';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('WordDiff', function() {
   describe('#diffWords', function() {
@@ -70,15 +70,15 @@ describe('WordDiff', function() {
   describe('#diffWords - async', function() {
     it('should diff whitespace', function(done) {
       diffWords('New Value', 'New  ValueMoreData', function(err, diffResult) {
-        expect(err).to.be(undefined);
+        expect(err).to.be.undefined;
         expect(convertChangesToXML(diffResult)).to.equal('New  <del>Value</del><ins>ValueMoreData</ins>');
         done();
       });
     });
 
     it('should diff multiple whitespace values', function(done) {
       diffWords('New Value  ', 'New  ValueMoreData ', function(err, diffResult) {
-        expect(err).to.be(undefined);
+        expect(err).to.be.undefined;
         expect(convertChangesToXML(diffResult)).to.equal('New  <del>Value</del><ins>ValueMoreData</ins> ');
         done();
       });
@@ -87,7 +87,7 @@ describe('WordDiff', function() {
     // Diff on word boundary
     it('should diff on word boundaries', function(done) {
       diffWords('New :Value:Test', 'New  ValueMoreData ', function(err, diffResult) {
-        expect(err).to.be(undefined);
+        expect(err).to.be.undefined;
         expect(convertChangesToXML(diffResult)).to.equal('New  <del>:Value:Test</del><ins>ValueMoreData </ins>');
         done();
       });
@@ -96,21 +96,21 @@ describe('WordDiff', function() {
     // Diff without changes
     it('should handle identity', function(done) {
       diffWords('New Value', 'New Value', function(err, diffResult) {
-        expect(err).to.be(undefined);
+        expect(err).to.be.undefined;
         expect(convertChangesToXML(diffResult)).to.equal('New Value');
         done();
       });
     });
     it('should handle empty', function(done) {
       diffWords('', '', function(err, diffResult) {
-        expect(err).to.be(undefined);
+        expect(err).to.be.undefined;
         expect(convertChangesToXML(diffResult)).to.equal('');
         done();
       });
     });
     it('should diff has identical content', function(done) {
       diffWords('New Value', 'New  Value', function(err, diffResult) {
-        expect(err).to.be(undefined);
+        expect(err).to.be.undefined;
         expect(convertChangesToXML(diffResult)).to.equal('New  Value');
         done();
       });

test/patch/apply.js

@@ -1,7 +1,7 @@
 import {applyPatch} from '../../lib/patch/apply';
 import {createPatch} from '../../lib/patch/create';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 describe('patch/apply', function() {
   describe('#applyPatch', function() {

test/patch/create.js

@@ -1,7 +1,7 @@
 import {diffWords} from '../../lib';
 import {createPatch, createTwoFilesPatch, structuredPatch} from '../../lib/patch/create';
 
-import expect from 'expect.js';
+import {expect} from 'chai';
 
 const VERBOSE = false;
 function log() {