Use mocha for tests and add basic test

Makefile

@@ -0,0 +1,6 @@
+MOCHA = ./node_modules/mocha/bin/mocha
+
+test:
+	@$(MOCHA)
+
+.PHONY: test

package.json

@@ -4,7 +4,7 @@
   "description": "Distributed locking mechanism using haredis",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "make test"
   },
   "repository": {
     "type": "git",
@@ -24,5 +24,8 @@
   "dependencies": {
     "haredis": "~0.2.10",
     "moment": "~1.7.0"
+  },
+  "devDependencies": {
+    "mocha": "~1.9.0"
   }
 }

test/basic.js

@@ -0,0 +1,20 @@
+describe('halocksmith', function () {
+  var cleanup;
+
+  after(function (done) {
+    cleanup(done);
+  });
+
+  it('can create an exclusive lock', function (done) {
+    var lock = halocksmith({ retries: 0, timeout: 2 });
+    lock(function (err, release) {
+      assert.ifError(err);
+      cleanup = release;
+      setTimeout(done, 100);
+    });
+    lock(function (err, release) {
+      assert.ok(err instanceof Error);
+      assert.equal(release, null);
+    });
+  });
+});

test/common.js

@@ -0,0 +1,4 @@
+/*global assert: true, halocksmith: true*/
+
+halocksmith = require('../');
+assert = require('assert');

test/mocha.opts

@@ -0,0 +1,4 @@
+--require test/common.js
+--globals halocksmith,assert
+--reporter spec
+--timeout 5s