Show text diffs for failed tests

Makefile

@@ -51,7 +51,7 @@ lint:
 	eslint --reset .
 
 test: lint
-	mocha -R spec
+	mocha
 	echo "CommonMark stat:\n"
 	./support/specsplit.js test/fixtures/commonmark/spec.txt
 

package.json

@@ -31,6 +31,7 @@
     "autoprefixer-stylus": "~0.4.0",
     "benchmark": "~1.0.0",
     "browserify": "*",
+    "chai": "~1.10.0",
     "commonmark": "~ 0.15.0",
     "coveralls": "~2.11.2",
     "eslint": "0.11.0",
@@ -45,7 +46,7 @@
     "markdown-it-mark": "~ 0.1.0",
     "markdown-it-sub": "~ 0.1.0",
     "markdown-it-sup": "~ 0.1.0",
-    "markdown-it-testgen": "~ 0.1.0",
+    "markdown-it-testgen": "~ 0.1.3",
     "marked": "0.3.2",
     "stylus": "~0.49.3",
     "mocha": "*",

test/misc.js

@@ -1,7 +1,7 @@
 'use strict';
 
 
-var assert     = require('assert');
+var assert     = require('chai').assert;
 var markdownit = require('../');
 
 

test/mocha.opts

@@ -0,0 +1 @@
+-R spec --inline-diffs

test/ruler.js

@@ -1,7 +1,7 @@
 'use strict';
 
 
-var assert = require('assert');
+var assert = require('chai').assert;
 var Ruler  = require('../lib/ruler');
 
 describe('Ruler', function () {

test/utils.js

@@ -1,7 +1,7 @@
 'use strict';
 
 
-var assert     = require('assert');
+var assert = require('chai').assert;
 
 
 describe('Utils', function () {