ClojureScript Testing with CLJS

- Adds node_23 to flake.nix
- Adds package.json
- Adds shadow-cljs to package.json
- Adds shadow-cljs.edn to configure test compilation
- Updates .github/workflows/ci.yml to run tasks
- Updates readme.md to guide users on installing deps, compiling, and
  running tests
- Updates many test files to wrap ratios in reader conditionals

Author: jaidetree

.github/workflows/ci.yml

@@ -55,3 +55,40 @@ jobs:
 
       - name: Run Tests
         run: lein test
+  clojurescript:
+    strategy:
+      matrix:
+        # Uncomment to enable all of them
+        # os: [ubuntu-latest, macOS-latest, windows-latest]
+        os: [ubuntu-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      # It is important to install java before installing clojure tools which needs java
+      # exclusions: babashka, clj-kondo and cljstyle
+      - name: Prepare java
+        uses: actions/setup-java@v3
+        with:
+          distribution: "zulu"
+          java-version: "17"
+
+      - name: Prepare node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "23.x"
+          check-latest: true
+          cache: 'npm'
+          cache-dependency-path: "package-lock.json"
+
+      - name: Install Node Dependencies
+        run: npm ci
+
+      - name: Compile Tests
+        run: npm run build
+
+      - name: Run Tests
+        run: npm test

README.md

@@ -26,3 +26,32 @@ the test suite whenever you save new changes.
 ```bash
 $ lein test-refresh
 ```
+## Running the clojurescript tests
+
+First, make sure you haev node 23 or greater.
+
+Install the node dependencies:
+
+```bash
+npm install
+```
+
+Compile the tests:
+
+```bash
+npx shadow-cljs compile test
+```
+
+Once tests are compiled they can be ran with:
+
+```bash
+node target/js/node-tests.js
+```
+
+### Automated test running during development
+
+If you want to autorun the tests during development run the following:
+
+```bash
+npx shadow-cljs watch test
+```

flake.lock

@@ -18,6 +18,7 @@
           pkgs.clojure-lsp
           pkgs.leiningen
           pkgs.temurin-jre-bin-17
+          pkgs.nodejs_23
         ];
       };
     });