Add test for maxSearchSize

Author: wooorm

test.js

@@ -22,6 +22,19 @@ test('hastUtilExcerpt', (t) => {
     'should copy to an excerpt comment'
   )
 
+  t.deepEqual(
+    excerpt(
+      h('div', [
+        h('p', 'Lorem ipsum dolor sit amet.'),
+        u('comment', 'more'),
+        h('p', 'Consectetur adipisicing elit.')
+      ]),
+      {maxSearchSize: 24}
+    ),
+    undefined,
+    'should support `maxSearchSize`'
+  )
+
   t.deepEqual(
     excerpt(
       h('div', [