Added a basic test

package.json

@@ -4,7 +4,7 @@
   "description": "Enforces module path case sensitivity in Webpack",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "mocha test/"
   },
   "repository": {
     "type": "git",
@@ -22,5 +22,9 @@
   "bugs": {
     "url": "https://github.com/Urthen/case-sensitive-paths-webpack-plugin/issues"
   },
-  "homepage": "https://github.com/Urthen/case-sensitive-paths-webpack-plugin#readme"
+  "homepage": "https://github.com/Urthen/case-sensitive-paths-webpack-plugin#readme",
+  "devDependencies": {
+    "mocha": "^3.0.1",
+    "webpack": "^1.13.1"
+  }
 }

test/fixtures/wrong-case/entry.js

@@ -0,0 +1 @@
+var testModule = require('./TestFile');

test/fixtures/wrong-case/testfile.js

@@ -0,0 +1 @@
+module.exports = '';

test/index.js

@@ -0,0 +1,37 @@
+var assert = require("assert");
+var path = require("path");
+var webpack = require("webpack");
+
+var CaseSensitivePathsPlugin = require("../");
+
+describe("CaseSensitivePathsPlugin", function() {
+
+    it("should compile and warn on wrong filename case", function(done) {
+        webpack({
+            context: path.join(__dirname, "fixtures", "wrong-case"),
+            target: "node",
+            output: {
+                path: path.join(__dirname, "js"),
+                filename: "result.js",
+            },
+            entry: "./entry",
+            plugins: [
+                new CaseSensitivePathsPlugin()
+            ]
+        }, function(err, stats) {
+            if (err) done(err);
+            assert(stats.hasErrors());
+            assert.equal(stats.hasWarnings(), false);
+            var jsonStats = stats.toJson();
+            assert.equal(jsonStats.errors.length, 1);
+
+            var error = jsonStats.errors[0].split("\n");
+            // check that the plugin produces the correct output
+            assert(error[1].indexOf('[CaseSensitivePathsPlugin]') > -1);
+            assert(error[1].indexOf('TestFile.js') > -1); // wrong file require
+            assert(error[1].indexOf('testfile.js') > -1); // actual file name
+
+            done();
+        });
+    });
+});