defndaines
Web Development with Clojure, Third Edition: Which jdbc (14)
I’ve stumbled on running the guestbook tests on pages 14–15, and realize there’s a mismatch between the book and the default generated code.
Having recently run lein new luminus guestbook, the require statement by default in test/clj/guestbook/db/core_test.clj has the require as
[next.jdbc :as jdbc]
This failed when I tried to run tests because of
Syntax error compiling at (guestbook/db/core_test.clj:21:3).
No such var: jdbc/with-db-transaction
Spotting that the text currently (B16) has the require as
[clojure.java.jdbc :as jdbc]
I changed it, but this leads to failures
ERROR in (messages-test) (core_deftype.clj:583)
Uncaught exception, not in assertion.
expected: nil
actual: java.lang.IllegalArgumentException: No implementation of method: :get-level of protocol: #'clojure.java.jdbc/Connectable found for class: com.zaxxer.hikari.HikariDataSource
I haven’t fiddled with it any more than that, but it does suggest that the latest luminus may have made changes to next.jdbc, causing some mismatches with the text.
I should note that in the REPL I am able to call save-message! and get-messages just fine.
Most Liked
defndaines
The solution which uses next.jdbc is:
(deftest messages-test
(jdbc/with-transaction [t-conn *db* {:rollback-only true}]
(is (= 1 (db/save-message!
1
Popular Pragmatic Bookshelf topics
As per the title, thanks.
New
Title: Web Development with Clojure, Third Edition - migrations/create not working: p159
When I execute the command:
user=> (create-...
New
Title: Hands-On Rust (Chapter 11: prefab)
Just played a couple of amulet-less games. With a bit of debugging, I believe that your can_p...
New
I can’t setup the Rails source code. This happens in a working directory containing multiple (postgres) Rails apps.
With:
ruby-3.0.0
s...
New
I am working on the “Your Turn” for chapter one and building out the restart button talked about on page 27. It recommends looking into ...
New
Title: Intuitive Python: docker run… denied error (page 2)
Attempted to run the docker command in both CLI and Powershell
PS C:\Users\r...
New
Title: Web Development with Clojure, Third Edition, vB17.0 (p9)
The create table guestbook syntax suggested doesn’t seem to be accepted ...
New
I ran this command after installing the sample application:
$ cards add do something --owner Brian
And got a file not found error:
Fil...
New
This is as much a suggestion as a question, as a note for others.
Locally the SGP30 wasn’t available, so I ordered a SGP40. On page 53, ...
New
Hey there,
I’m enjoying this book and have learned a few things alredayd. However, in Chapter 4 I believe we are meant to see the “>...
New
Other popular topics
A thread that every forum needs!
Simply post a link to a track on YouTube (or SoundCloud or Vimeo amongst others!) on a separate line an...
New
What chair do you have while working… and why?
Is there a ‘best’ type of chair or working position for developers?
New
New
Please tell us what is your preferred monitor setup for programming(not gaming) and why you have chosen it.
Does your monitor have eye p...
New
I’m thinking of buying a monitor that I can rotate to use as a vertical monitor?
Also, I want to know if someone is using it for program...
New
Build highly interactive applications without ever leaving Elixir, the way the experts do. Let LiveView take care of performance, scalabi...
New
The V Programming Language
Simple language for building maintainable programs
V is already mentioned couple of times in the forum, but I...
New
We’ve talked about his book briefly here but it is quickly becoming obsolete - so he’s decided to create a series of 7 podcasts, the firs...
New
If you get Can't find emacs in your PATH when trying to install Doom Emacs on your Mac you… just… need to install Emacs first! :lol:
bre...
New
Hello,
I’m a beginner in Android development and I’m facing an issue with my project setup. In my build.gradle.kts file, I have the foll...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /ruby
- /wasm
- /erlang
- /phoenix
- /keyboards
- /python
- /js
- /rails
- /security
- /go
- /swift
- /vim
- /clojure
- /emacs
- /haskell
- /java
- /svelte
- /onivim
- /typescript
- /kotlin
- /crystal
- /c-plus-plus
- /tailwind
- /react
- /gleam
- /ocaml
- /flutter
- /elm
- /vscode
- /ash
- /opensuse
- /html
- /centos
- /deepseek
- /php
- /zig
- /scala
- /sublime-text
- /lisp
- /textmate
- /react-native
- /debian
- /nixos
- /agda
- /kubuntu
- /arch-linux
- /django
- /deno
- /revery
- /nodejs
- /ubuntu
- /manjaro
- /spring
- /diversity
- /lua
- /julia
- /markdown
- /slackware








