Fixes #1 - empty html file bug

index.js

@@ -27,7 +27,7 @@ function inject(options) {
 function transform(file, enc, cb) {
     var ext = path.extname(file.path),
         relativePath = path.relative(globals.cwd, file.path);
-    if(file.isNull()) {
+    if(file.isNull() || file.contents.length === 0) {
         this.push(file);
     } else if(ext === '.html') {
         globals.htmlFiles.push(file);

package.json

@@ -36,12 +36,12 @@
   "homepage": "https://github.com/rydahhh/gulp-simple-inject#readme",
   "dependencies": {
     "gulp-util": "^3.0.7",
+    "if-env": "^1.0.0",
     "stream-replace": "^1.0.0",
     "through2": "^2.0.0"
   },
   "devDependencies": {
     "coveralls": "^2.11.6",
-    "if-env": "^1.0.0",
     "istanbul": "^0.4.1",
     "jasmine-node": "^1.14.5"
   }

spec/main.spec.js

@@ -87,6 +87,17 @@ describe("The gulp-simple-inject plugin", () => {
             }
         });
     });
+
+    it('should not break on an empty html file', done => {
+        injector.write(getEmptyFile('empty-file'));
+        injector.end();
+
+        injector.on('data', () => {});
+
+        injector.on('end', data => {
+            done();
+        });
+    });
 
     describe('with the cwd option specified', () => {
         var injector;
@@ -117,6 +128,13 @@ function getHtmlFile(name) {
     });   
 }
 
+function getEmptyFile(name) {
+    return new File({
+        path: `${cwd}/${name}.html`,
+        contents: new Buffer("", "utf8")
+    });
+}
+
 function getHtmlFileWithoutInjectTags(name) {
     return new File({
         path: `${cwd}/${name}.html`,