Add a test for denoland/deno#9620

bundler/tests/deno-exec/deno-9620/case1/input/entry.ts

@@ -0,0 +1,21 @@
+import { MultipartReader } from "https://deno.land/std@0.88.0/mime/multipart.ts";
+import { StringReader } from "https://deno.land/std@0.88.0/io/readers.ts";
+
+// carriage returns added for running on POSIX, not needed if on windows
+const content = `--------------------------366796e1c748a2fb\r
+Content-Disposition: form-data; name="payload"\r
+Content-Type: text/plain\r
+\r
+CONTENT\r
+--------------------------366796e1c748a2fb--`
+
+const boundary = "------------------------366796e1c748a2fb";
+
+const stringReader = new StringReader(content);
+
+const multipartReader = new MultipartReader(stringReader, boundary);
+const formData = await multipartReader.readForm()
+for (const entry of formData.entries()) {
+    console.log("entry", entry);
+}
+console.log("formdata", formData);