diff --git a/test/basic.js b/test/basic.js
index 56d547f..67cfcf2 100644
--- a/test/basic.js
+++ b/test/basic.js
@@ -70,6 +70,35 @@ paths.forEach((path) => {
   });
 });
 
+// basic blob
+tap.test("preview with blob", (t) => {
+  // TODO: i bet there must be something like beautfiul soup for nodejs, right?
+  let textRe = /hello testworld!/;
+  let blobRe = /\[128zeros\]\((&[0-9a-zA-Z]+=.sha256)\)/;
+  supertest(app)
+    .post("/publish/preview")
+    .field("text", "hello testworld!")
+    .attach("blob", "test/fixtures/128zeros")
+    .set("Referer", "http://localhost/publish/preview")
+    .set("Host", "localhost")
+    .set("Accept", "text/html")
+    .expect(200, textRe)
+    .expect((res) => {
+      let found = res.text.match(blobRe);
+      t.notEqual(found, null, "body did not match blob regexp");
+      t.true(found.length >= 1, `expected ${found.length} >= 1`);
+      t.equal(
+        found[1],
+        "&OHI6Ll6KF6p5UNwAggmUTomPaae9EKI8g500HpNf1co=.sha256"
+      );
+    })
+    .end((err) => {
+      t.equal(err, null);
+      console.log("done: preview with blob");
+      t.end();
+    });
+});
+
 // HACK: This closes the database.
 tap.teardown(() => {
   app.close();
diff --git a/test/fixtures/128zeros b/test/fixtures/128zeros
new file mode 100644
index 0000000..00bc047
Binary files /dev/null and b/test/fixtures/128zeros differ