test: add test cases for include tags used multiple times

Author: nokazn

test/expected/multiple-include.html

@@ -0,0 +1,14 @@
+<div>local1</div>
+<div>global</div>
+
+<div>local2</div>
+<div>global</div>
+
+<div>local3</div>
+<div>global</div>
+
+<div>local4</div>
+<div>global</div>
+
+<div>local5</div>
+<div>global</div>

test/fixtures/multiple-include.html

@@ -0,0 +1,5 @@
+<include src="./test/fixtures/includes/6.html">{ "localVariable": "local1" }</include>
+<include src="./test/fixtures/includes/6.html">{ "localVariable": "local2" }</include>
+<include src="./test/fixtures/includes/6.html">{ "localVariable": "local3" }</include>
+<include src="./test/fixtures/includes/6.html">{ "localVariable": "local4" }</include>
+<include src="./test/fixtures/includes/6.html">{ "localVariable": "local5" }</include>

test/test.js

@@ -60,6 +60,13 @@ test('Should merge global locals', t => {
     }})
 })
 
+test('Should merge global variables and evaluate each local variable', t => {
+  return process(t, 'multiple-include', {
+    posthtmlExpressionsOptions: {
+      locals: {globalVariable: 'global'}
+    }})
+})
+
 test('addDependency message', t => {
   const includePath = require('path').resolve('./test/fixtures/blocks/button/button.html')