- added test for creating an entry via `application/x-www-form-urlencoded`

- added invalid url test for multipart form
- added missing check if the key in the form func exists

handlers/handlers.go

@@ -112,6 +112,10 @@ func (h *Handler) handleCreateForm(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, err.Error(), http.StatusBadRequest)
 		return
 	}
+	if r.PostFormValue("URL") == "" {
+		http.Error(w, "URL key does not exist", http.StatusBadRequest)
+		return
+	}
 	id, err := h.store.CreateEntry(r.PostFormValue("URL"), r.RemoteAddr)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusBadRequest)

handlers/handlers_test.go

@@ -18,6 +18,7 @@ import (
 const (
 	baseURL       = "http://myshorter"
 	testingDBName = "main.db"
+	testURL       = "https://www.google.de/"
 )
 
 var server *httptest.Server
@@ -115,7 +116,6 @@ func TestCreateEntryMultipart(t *testing.T) {
 	defer cleanup()
 
 	t.Run("valid request", func(t *testing.T) {
-		const testURL = "https://www.google.de/"
 		// Prepare a form that you will submit to that URL.
 		var b bytes.Buffer
 		multipartWriter := multipart.NewWriter(&b)
@@ -143,8 +143,35 @@ func TestCreateEntryMultipart(t *testing.T) {
 		})
 	})
 
+	t.Run("invalid url", func(t *testing.T) {
+		// Prepare a form that you will submit to that URL.
+		var b bytes.Buffer
+		multipartWriter := multipart.NewWriter(&b)
+		formWriter, err := multipartWriter.CreateFormField("URL")
+		if err != nil {
+			t.Fatalf("could not create form field: %v", err)
+		}
+		formWriter.Write([]byte("this is definitely not a valid url"))
+		multipartWriter.Close()
+
+		resp, err := http.Post(server.URL+"/api/v1/create", multipartWriter.FormDataContentType(), &b)
+		if err != nil {
+			t.Fatalf("could not post to the backend: %v", err)
+		}
+		if resp.StatusCode != http.StatusBadRequest {
+			t.Errorf("expected status %d; got %d", http.StatusOK, resp.StatusCode)
+		}
+		body, err := ioutil.ReadAll(resp.Body)
+		body = bytes.TrimSpace(body)
+		if err != nil {
+			t.Fatalf("could not read the body: %v", err)
+		}
+		if string(body) != store.ErrNoValidURL.Error() {
+			t.Fatalf("received unexpected response: %s", body)
+		}
+	})
+
 	t.Run("invalid request", func(t *testing.T) {
-		const testURL = "https://www.google.de/"
 		// Prepare a form that you will submit to that URL.
 		var b bytes.Buffer
 		multipartWriter := multipart.NewWriter(&b)
@@ -154,6 +181,9 @@ func TestCreateEntryMultipart(t *testing.T) {
 		if err != nil {
 			t.Fatalf("could not post to the backend: %v", err)
 		}
+		if resp.StatusCode != http.StatusBadRequest {
+			t.Errorf("expected status %d; got %d", http.StatusOK, resp.StatusCode)
+		}
 		body, err := ioutil.ReadAll(resp.Body)
 		body = bytes.TrimSpace(body)
 		if err != nil {
@@ -165,6 +195,74 @@ func TestCreateEntryMultipart(t *testing.T) {
 	})
 }
 
+func TestCreateEntryForm(t *testing.T) {
+	cleanup, err := getBackend()
+	if err != nil {
+		t.Fatalf("could not create backend: %v", err)
+	}
+	defer cleanup()
+
+	t.Run("valid request", func(t *testing.T) {
+		data := url.Values{}
+		data.Set("URL", testURL)
+
+		resp, err := http.Post(server.URL+"/api/v1/create", "application/x-www-form-urlencoded", bytes.NewBufferString(data.Encode()))
+		if err != nil {
+			t.Fatalf("could not post to the backend: %v", err)
+		}
+		if resp.StatusCode != http.StatusOK {
+			t.Errorf("expected status %d; got %d", http.StatusOK, resp.StatusCode)
+		}
+		var parsed URLUtil
+		err = json.NewDecoder(resp.Body).Decode(&parsed)
+		if err != nil {
+			t.Fatalf("could not unmarshal data: %v", err)
+		}
+		t.Run("test if shorted URL is correct", func(t *testing.T) {
+			testRedirect(t, parsed.URL, testURL)
+		})
+	})
+
+	t.Run("invalid request", func(t *testing.T) {
+		resp, err := http.Post(server.URL+"/api/v1/create", "application/x-www-form-urlencoded", bytes.NewBufferString(url.Values{}.Encode()))
+		if err != nil {
+			t.Fatalf("could not post to the backend: %v", err)
+		}
+		if resp.StatusCode != http.StatusBadRequest {
+			t.Errorf("expected status %d; got %d", http.StatusOK, resp.StatusCode)
+		}
+		body, err := ioutil.ReadAll(resp.Body)
+		body = bytes.TrimSpace(body)
+		if err != nil {
+			t.Fatalf("could not read the body: %v", err)
+		}
+		if string(body) != "URL key does not exist" {
+			t.Fatalf("received unexpected response: %s", body)
+		}
+	})
+
+	t.Run("invalid url", func(t *testing.T) {
+		data := url.Values{}
+		data.Set("URL", "this is definitely not a valid url")
+
+		resp, err := http.Post(server.URL+"/api/v1/create", "application/x-www-form-urlencoded", bytes.NewBufferString(data.Encode()))
+		if err != nil {
+			t.Fatalf("could not post to the backend: %v", err)
+		}
+		if resp.StatusCode != http.StatusBadRequest {
+			t.Errorf("expected status %d; got %d", http.StatusOK, resp.StatusCode)
+		}
+		body, err := ioutil.ReadAll(resp.Body)
+		body = bytes.TrimSpace(body)
+		if err != nil {
+			t.Fatalf("could not read the body: %v", err)
+		}
+		if string(body) != store.ErrNoValidURL.Error() {
+			t.Fatalf("received unexpected response: %s", body)
+		}
+	})
+}
+
 func testRedirect(t *testing.T, shortURL, longURL string) {
 	client := &http.Client{
 		CheckRedirect: func(req *http.Request, via []*http.Request) error {