Merge pull request #686 from geek/bug

Fix coverage of zero-comment scripts

Author: geek

lib/coverage.js

@@ -352,7 +352,7 @@ internals.instrument = function (filename) {
                     }
                 }
                 return commented;
-            }).reduce((a, b) => a + b);
+            }).reduce((a, b) => a + b, 0);
     }
 
     return chunks.join('');

test/coverage.js

@@ -36,6 +36,16 @@ describe('Coverage', () => {
         done();
     });
 
+    it('computes sloc on script that has no comments', (done) => {
+
+        const Test = require('./coverage/nocomment');
+        Test.method(1);
+
+        const cov = Lab.coverage.analyze({ coveragePath: Path.join(__dirname, 'coverage/nocomment') });
+        expect(cov.percent).to.equal(100);
+        done();
+    });
+
     it('instruments and measures coverage', (done) => {
 
         const Test = require('./coverage/basic');

test/coverage/nocomment.js

@@ -0,0 +1,9 @@
+'use strict';
+
+const internals = {};
+
+
+exports.method = function (value) {
+
+	return value;
+};