diff --git a/package.json b/package.json
index e48c89e3..a3de7d73 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   },
   "scripts": {
     "unit": "jasmine test/test.js",
+    "debug-unit": "DEBUG_TEST=true node --inspect-brk ./node_modules/.bin/jasmine test/test.js",
     "test-phantom": "python third_party/phantomjs/test/run-tests.py",
     "test": "npm run lint --silent && npm run unit && npm run test-phantom",
     "install": "node install.js",
diff --git a/test/test.js b/test/test.js
index 6834c15c..37301e43 100644
--- a/test/test.js
+++ b/test/test.js
@@ -23,7 +23,10 @@ let PORT = 8907;
 let STATIC_PREFIX = 'http://localhost:' + PORT;
 let EMPTY_PAGE = STATIC_PREFIX + '/empty.html';
 
-jasmine.DEFAULT_TIMEOUT_INTERVAL = 10 * 1000;
+if (process.env.DEBUG_TEST)
+  jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000 * 1000 * 1000;
+else
+  jasmine.DEFAULT_TIMEOUT_INTERVAL = 10 * 1000;
 
 describe('Puppeteer', function() {
   let browser;