if post.title is empty, set it to post.slug (#3672)

lib/plugins/processor/post.js

@@ -117,6 +117,10 @@ module.exports = ctx => {
         data.title = data.link.replace(/^https?:\/\/|\/$/g, '');
       }
 
+      if (!data.title) {
+        data.title = data.slug;
+      }
+
       if (data.permalink) {
         data.slug = data.permalink;
         delete data.permalink;

test/scripts/processors/post.js

@@ -615,6 +615,26 @@ describe('post', () => {
     }).finally(() => fs.unlink(file.source));
   });
 
+
+  it('post - link without title and link', () => {
+    const body = '';
+
+    const file = newFile({
+      path: 'foo.md',
+      published: true,
+      type: 'create',
+      renderable: true
+    });
+
+    return fs.writeFile(file.source, body).then(() => process(file)).then(() => {
+      const post = Post.findOne({source: file.path});
+
+      post.title.should.eql('foo');
+
+      return post.remove();
+    }).finally(() => fs.unlink(file.source));
+  });
+
   it('post - category is an alias for categories', () => {
     const body = [
       'title: "Hello world"',