diff --git a/.eslintignore b/.eslintignore
index 3e4b026a81..d5134e407e 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,2 +1,3 @@
+coverage/
 lib/to-iso-string/**/*.js
 mocha.js
diff --git a/.gitignore b/.gitignore
index 05fd3db57e..05cc01726e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ npm-debug.log*
 .karma/
 *.orig
 .nyc_output/
+coverage/
diff --git a/.nycrc b/.nycrc
new file mode 100644
index 0000000000..8848fa90fd
--- /dev/null
+++ b/.nycrc
@@ -0,0 +1,10 @@
+{
+  "reporter": [
+    "json",
+    "text-summary"
+  ],
+  "exclude": [
+    "lib/browser",
+    "test/**/*"
+  ]
+}
diff --git a/.travis.yml b/.travis.yml
index a80e4983a6..553966a6fb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,7 +16,7 @@ matrix:
   fast_finish: true
   include:
     - node_js: '7'
-      env: TARGET=test-node
+      env: TARGET=test-node COVERAGE=true
     - node_js: '6'
       env: TARGET=test-node
     - node_js: '5'
@@ -42,6 +42,8 @@ before_script: scripts/travis-before-script.sh
 
 script: make $TARGET
 
+after_success: "npm run postcoverage && <coverage/lcov.info ./node_modules/coveralls/bin/coveralls.js"
+
 notifications:
   urls:
     # for gitter
diff --git a/Makefile b/Makefile
index 40a098e318..c7d9e8a342 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,15 @@ BROWSERIFY := "node_modules/.bin/browserify"
 ESLINT := "node_modules/.bin/eslint"
 KARMA := "node_modules/.bin/karma"
 MOCHA := "bin/mocha"
+NYC := "node_modules/.bin/nyc"
+
+ifdef COVERAGE
+define test_node
+	$(NYC) --report-dir coverage/reports/$(1) $(MOCHA)
+endef
+else
+	test_node := $(MOCHA)
+endif
 
 TM_BUNDLE = JavaScript\ mocha.tmbundle
 SRC = $(shell find lib -name "*.js" -type f | sort)
@@ -54,24 +63,24 @@ test-jsapi:
 
 test-unit:
 	@printf "==> [Test :: Unit]\n"
-	$(MOCHA) test/acceptance/*.js \
+	$(call test_node,unit) test/acceptance/*.js \
 		--growl \
 		test/*.js
 
 test-integration:
 	@printf "==> [Test :: Integrations]\n"
-	$(MOCHA) --timeout 5000 \
+	$(call test_node,integration) --timeout 5000 \
 		test/integration/*.js
 
 test-compilers:
 	@printf "==> [Test :: Compilers]\n"
-	$(MOCHA) --compilers coffee:coffee-script/register,foo:./test/compiler/foo \
+	$(call test_node,compilers) --compilers coffee:coffee-script/register,foo:./test/compiler/foo \
 		test/acceptance/test.coffee \
 		test/acceptance/test.foo
 
 test-requires:
 	@printf "==> [Test :: Requires]\n"
-	$(MOCHA) --compilers coffee:coffee-script/register \
+	$(call test_node,requires) --compilers coffee:coffee-script/register \
 		--require test/acceptance/require/a.js \
 		--require test/acceptance/require/b.coffee \
 		--require test/acceptance/require/c.js \
@@ -80,22 +89,22 @@ test-requires:
 
 test-bdd:
 	@printf "==> [Test :: BDD]\n"
-	$(MOCHA) --ui bdd \
+	$(call test_node,bdd) --ui bdd \
 		test/acceptance/interfaces/bdd.spec
 
 test-tdd:
 	@printf "==> [Test :: TDD]\n"
-	$(MOCHA) --ui tdd \
+	$(call test_node,tdd) --ui tdd \
 		test/acceptance/interfaces/tdd.spec
 
 test-qunit:
 	@printf "==> [Test :: QUnit]\n"
-	$(MOCHA) --ui qunit \
+	$(call test_node,qunit) --ui qunit \
 		test/acceptance/interfaces/qunit.spec
 
 test-exports:
 	@printf "==> [Test :: Exports]\n"
-	$(MOCHA) --ui exports \
+	$(call test_node,exports) --ui exports \
 		test/acceptance/interfaces/exports.spec
 
 test-glob:
@@ -104,49 +113,49 @@ test-glob:
 
 test-reporters:
 	@printf "==> [Test :: Reporters]\n"
-	$(MOCHA) test/reporters/*.js
+	$(call test_node,reporters) test/reporters/*.js
 
 test-only:
 	@printf "==> [Test :: Only]\n"
-	$(MOCHA) --ui tdd \
+	$(call test_node,only-tdd) --ui tdd \
 		test/acceptance/misc/only/tdd.spec
 
-	$(MOCHA) --ui bdd \
+	$(call test_node,only-bdd) --ui bdd \
 		test/acceptance/misc/only/bdd.spec
 
-	$(MOCHA) --ui qunit \
+	$(call test_node,only-bdd-require) --ui qunit \
 		test/acceptance/misc/only/bdd-require.spec
 
 test-global-only:
 	@printf "==> [Test :: Global Only]\n"
-	$(MOCHA) --ui tdd \
+	$(call test_node,global-only-tdd) --ui tdd \
 		test/acceptance/misc/only/global/tdd.spec
 
-	$(MOCHA) --ui bdd \
+	$(call test_node,global-only-bdd) --ui bdd \
 		test/acceptance/misc/only/global/bdd.spec
 
-	$(MOCHA) --ui qunit \
+	$(call test_node,global-only-qunit) --ui qunit \
 		test/acceptance/misc/only/global/qunit.spec
 
 test-mocha:
 	@printf "==> [Test :: Mocha]\n"
-	$(MOCHA) test/mocha
+	$(call test_node,mocha) test/mocha
 
 non-tty:
 	@printf "==> [Test :: Non-TTY]\n"
-	$(MOCHA) --reporter dot \
+	$(call test_node,non-tty-dot) --reporter dot \
 		test/acceptance/interfaces/bdd.spec 2>&1 > /tmp/dot.out
 
 	@echo dot:
 	@cat /tmp/dot.out
 
-	$(MOCHA) --reporter list \
+	$(call test_node,non-tty-list) --reporter list \
 		test/acceptance/interfaces/bdd.spec 2>&1 > /tmp/list.out
 
 	@echo list:
 	@cat /tmp/list.out
 
-	$(MOCHA) --reporter spec \
+	$(call test_node,non-tty-spec) --reporter spec \
 		test/acceptance/interfaces/bdd.spec 2>&1 > /tmp/spec.out
 
 	@echo spec:
diff --git a/package.json b/package.json
index 764c159381..5f2b93ccbd 100644
--- a/package.json
+++ b/package.json
@@ -299,7 +299,10 @@
     "npm": ">= 1.4.x"
   },
   "scripts": {
-    "test": "make test"
+    "test": "make test",
+    "precoverage": "rm -rf coverage",
+    "coverage": "COVERAGE=true npm run test",
+    "postcoverage": "istanbul-combine -d coverage -r lcov -r html coverage/reports/*/*.json"
   },
   "dependencies": {
     "browser-stdout": "1.3.0",
@@ -318,12 +321,14 @@
     "assert": "^1.4.1",
     "browserify": "^13.0.0",
     "coffee-script": "^1.10.0",
+    "coveralls": "^2.11.15",
     "eslint": "^3.11.1",
     "eslint-config-semistandard": "^7.0.0",
     "eslint-config-standard": "^6.2.1",
     "eslint-plugin-promise": "^3.4.0",
     "eslint-plugin-standard": "2.0.1",
     "expect.js": "^0.3.1",
+    "istanbul-combine": "^0.3.0",
     "karma": "^1.1.0",
     "karma-browserify": "^5.0.5",
     "karma-chrome-launcher": "^2.0.0",
@@ -332,6 +337,7 @@
     "karma-phantomjs-launcher": "^1.0.2",
     "karma-sauce-launcher": "^1.0.0",
     "karma-spec-reporter": "0.0.26",
+    "nyc": "^10.0.0",
     "os-name": "^2.0.1",
     "phantomjs": "1.9.8",
     "rimraf": "^2.5.2",