Added flatten variables test

package.json

@@ -42,5 +42,9 @@
     "gulp-util": "^3.0.4",
     "merge": "^1.2.0",
     "through2": "^2.0.0"
-  }
+  },
+  "files": [
+    "index.js",
+    "Readme.md"
+  ]
 }

test/fixtures-flatten/index.html

@@ -0,0 +1,3 @@
+<label>@@obj</label>
+<strong>@@obj.param1</strong>
+<strong>@@obj.param2</strong>

test/fixtures-flatten/result.html

@@ -0,0 +1,3 @@
+<label>@@obj</label>
+<strong>value1</strong>
+<strong>value2</strong>

test/flatten.js

@@ -0,0 +1,64 @@
+'use strict';
+
+var fileIncludePlugin = require('..'),
+  gutil = require('gulp-util'),
+  should = require('should'),
+  fs = require('fs');
+
+describe('## gulp-file-include', function() {
+  var result = fs.readFileSync('test/fixtures-flatten/result.html', 'utf8');
+
+  describe('# flatten variables', function() {
+    it('file', function(done) {
+      var file = new gutil.File({
+        path: 'test/fixtures-flatten/index.html',
+        contents: fs.readFileSync('test/fixtures-flatten/index.html')
+      });
+
+      var stream = fileIncludePlugin({
+        context: {
+          obj: {
+            'param1': 'value1',
+            'param2': 'value2'
+          }
+        }
+      });
+      stream.on('data', function(newFile) {
+        should.exist(newFile);
+        should.exist(newFile.contents);
+
+        String(newFile.contents).should.equal(result);
+        done();
+      });
+
+      stream.write(file);
+      stream.end();
+    });
+
+    it('stream', function(done) {
+      var file = new gutil.File({
+        path: 'test/fixtures-flatten/index.html',
+        contents: fs.createReadStream('test/fixtures-flatten/index.html')
+      });
+
+      var stream = fileIncludePlugin({
+        context: {
+          obj: {
+            'param1': 'value1',
+            'param2': 'value2'
+          }
+        }
+      });
+      stream.on('data', function(newFile) {
+        should.exist(newFile);
+        should.exist(newFile.contents);
+
+        String(newFile.contents).should.equal(result);
+        done();
+      });
+
+      stream.write(file);
+      stream.end();
+    });
+  });
+});