test: should prepend root to image path

test/index.js

@@ -191,4 +191,43 @@ describe('Marked renderer', () => {
       ].join('\n'));
     });
   });
+
+  describe('prependRoot option tests', () => {
+    const body = [
+      '![](/bar/baz.jpg)',
+      '![foo](/aaa/bbb.jpg)',
+    ].join('\n');
+
+    const renderer = require('../lib/renderer');
+
+    const ctx = {
+      config: {
+        marked: {
+          prependRoot: false
+        },
+        root: '/blog/'
+      }
+    };
+
+    it('should not modify image path with default option', () => {
+      const r = renderer.bind(ctx);
+      const result = r({text: body});
+
+      result.should.eql([
+        '<p><img src="/bar/baz.jpg" alt="">',
+        '<img src="/aaa/bbb.jpg" alt="foo"></p>\n',
+      ].join('\n'));
+    });
+
+    it('should prepend image path with root', () => {
+      ctx.config.marked.prependRoot = true;
+      const r = renderer.bind(ctx);
+      const result = r({text: body});
+
+      result.should.eql([
+        '<p><img src="/blog/bar/baz.jpg" alt="">',
+        '<img src="/blog/aaa/bbb.jpg" alt="foo"></p>\n',
+      ].join('\n'));
+    });
+  });
 });