From 70538f170fbb21d9434aa1c10d49201611539165 Mon Sep 17 00:00:00 2001
From: Daan Sprenkels <daan@dsprenkels.com>
Date: Sat, 30 May 2020 18:04:39 +0200
Subject: [PATCH] Add a test for issue #56

---
 handlers_test.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/handlers_test.go b/handlers_test.go
index 529c2b2..c0e2381 100644
--- a/handlers_test.go
+++ b/handlers_test.go
@@ -159,3 +159,26 @@ func TestIssue60(t *testing.T) {
 	srv.ServeHTTP(rr, req)
 	checkStatusCode(t, rr, http.StatusNotFound)
 }
+
+func TestIssue56(t *testing.T) {
+	srv, _ := createTemporaryRouter(t)
+
+	// Make a POST request with both a 'file' *and* a 'shorten' part.
+	var body bytes.Buffer
+	form := multipart.NewWriter(&body)
+	if _, err := form.CreateFormFile("file", "empty.txt"); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := form.CreateFormField("shorten"); err != nil {
+		t.Fatal(err)
+	}
+	form.Close()
+	req, err := http.NewRequest("POST", "/", bytes.NewReader(body.Bytes()))
+	if err != nil {
+		t.Fatal(err)
+	}
+	req.Header.Add("Content-Type", form.FormDataContentType())
+	rr := httptest.NewRecorder()
+	srv.ServeHTTP(rr, req)
+	checkStatusCode(t, rr, http.StatusBadRequest)
+}