Test for require.

package.json

@@ -37,6 +37,7 @@
     "mocha": "^2.0.1",
     "plur": "^1.0.0",
     "resolve-from": "^1.0.0",
+    "temp": "^0.8.3",
     "through": "^2.3.4"
   }
 }

test/require-test.js

@@ -0,0 +1,42 @@
+var path = require('path');
+var temp = require('temp');
+var mocha = require('../');
+var fs = require('fs');
+var assert = require('assert');
+
+var tempFile
+const filePrefix = './';
+
+function removeFile(file) {
+  try {
+    fs.unlinkSync(file); 
+  } catch(err) {}
+}
+
+beforeEach(function(){
+  tempFile = temp.path({dir:process.cwd(), suffix: '.js'});
+  tempFileBaseName = path.basename(tempFile);
+  fs.closeSync(fs.openSync(tempFile, 'w'));
+});
+
+afterEach(function(){
+  removeFile(tempFile);
+});
+
+
+it('should fail when trying to require a file that doesn\'t exist', function() {
+  removeFile(tempFile);
+  assert.throws(function() {
+    mocha({ require: [filePrefix + tempFileBaseName]});
+  });
+})
+
+it('should be able to import js-files in cwd', function() {
+  mocha({ require: [filePrefix + tempFileBaseName]});
+});
+
+it('should fail when not having the ./ file prefix', function(){
+  assert.throws(function() {
+    mocha({require: [tempFileBaseName]}) 
+  });
+});