Adds attachment fetching/uploading

web/server_test.go

@@ -602,3 +602,47 @@ func TestSendMessage(t *testing.T) {
 		t.Fatalf("Message not found in conversation")
 	}
 }
+
+func TestAttachments(t *testing.T) {
+	s := web.NewMockHTTPServer(web.MockHTTPServerConfiguration{AuthEnabled: false})
+	httpServer := httptest.NewServer(s)
+
+	// Send upload request
+	testData := "hello world!"
+	attachmentDataReader := strings.NewReader(testData)
+	resp, err := http.Post(httpServer.URL+"/uploadAttachment?filename=test.txt", "application/data", attachmentDataReader)
+	if err != nil {
+		t.Fatalf("Error uploading attachment: %s", err)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		t.Fatalf("Error decoding body: %s", body)
+	}
+
+	var response web.UploadAttachmentResponse
+	err = json.Unmarshal(body, &response)
+	if err != nil {
+		t.Fatalf("Error decoding response: %s", err)
+	}
+
+	guid := response.TransferGUID
+
+	// Cleanup after ourselves
+	defer s.Server.DeleteAttachment(guid)
+
+	// Fetch it back
+	resp, err = http.Get(httpServer.URL + fmt.Sprintf("/fetchAttachment?guid=%s", guid))
+	if err != nil {
+		t.Fatalf("Error fetching attachment: %s", err)
+	}
+
+	responseData, err := io.ReadAll(resp.Body)
+	if err != nil {
+		t.Fatalf("Error reading attachment data: %s", err)
+	}
+
+	if string(responseData) != testData {
+		t.Fatalf("Didn't get expected response data: %s (got %s)", testData, responseData)
+	}
+}