Add code coverage test

.gitignore

@@ -1,5 +1,7 @@
 node_modules
+lib-cov
+coverage.html
+test/config.json
 *.log
 *.tmp
 *.swp
-test/config.json

Makefile

@@ -1,6 +1,7 @@
 TESTS = test/*.test.js
 REPORTER = spec
 TIMEOUT = 5000
+JSCOVERAGE = ./node_modules/visionmedia-jscoverage/jscoverage
 MOCHA = ./node_modules/mocha/bin/mocha
 
 install:
@@ -10,4 +11,9 @@ test: install
 	@NODE_ENV=test $(MOCHA) --reporter $(REPORTER) --timeout $(TIMEOUT) \
 		$(MOCHA_OPTS) $(TESTS)
 
+cov: install
+	@-rm -rf ./lib-cov
+	@$(JSCOVERAGE) ./lib ./lib-cov
+	@MYSQL_CLUSTER_COV=1 $(MOCHA) --reporter html-cov > ./coverage.html
+
 .PHONY: test install

index.js

@@ -2,5 +2,7 @@
 
 "use strict";
 
-module.exports = require(__dirname + '/lib/cluster.js');
+var LIBPATH = __dirname + (process.env.MYSQL_CLUSTER_COV ? '/lib-cov' : '/lib');
+
+module.exports = require(LIBPATH + '/cluster.js');
 

package.json

@@ -15,7 +15,8 @@
     "devDependencies": {
       "mocha"       : ">=0.9.0",
       "should"      : ">=0.4.2",
-      "interceptor" : ">=0.0.2"
+      "interceptor" : ">=0.0.2",
+      "visionmedia-jscoverage" : ">=1.0.0"
     },
     "main": "./index.js",
     "scripts": {