fix asn1 decoding for large integers

- fixed decoding for large integers
- added tests for js runtime
- introduce shadow-cljs for running js tests

Author: anttiramo

.gitignore

@@ -4,3 +4,10 @@
 pdf/test-allekirjoitettu.pdf
 pdf/testi.pdf-signable
 target
+pom.xml
+public
+out
+node_modules
+.clj-kondo
+.lsp
+.shadow-cljs

README.md

@@ -1 +1,20 @@
+# Puumerkki
 
+A library for communicating with DVV certificate card reader software
+
+## Usage
+
+See `dev-src/clj/puumerkki/main.clj` for example usages
+
+## Testing
+
+In order to execute tests in JVM, install Leigingen and run:
+
+```
+lein test
+```
+
+JS-tests are run with Shadow-cljs. Install npm, run `npm install` and execute tests:
+```
+npm run test
+```

karma.conf.js

@@ -0,0 +1,21 @@
+module.exports = function (config) {
+    config.set({
+        browsers: ['ChromeHeadlessCI'],
+        customLaunchers: {
+            ChromeHeadlessCI: {
+                base: 'ChromeHeadless',
+                flags: ['--no-sandbox']
+            }
+        },
+        basePath: 'out', // this is the same as the base-path of `:output-to` in `shadow-cljs.edn`
+        files: ['test.js'], // this is the same as the file-name (ending with .js) of `:output-to` in `shadow-cljs.edn`
+        frameworks: ['cljs-test'],
+        plugins: ['karma-cljs-test', 'karma-chrome-launcher'],
+        colors: true,
+        logLevel: config.LOG_INFO,
+        client: {
+            args: ["shadow.test.karma.init"],
+            singleRun: true
+        }
+    })
+};