diff --git a/.gitignore b/.gitignore
index 6d71e48..8d96ef1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ node_modules
 www/api/*/
 !www/api/*.*
 www/api/.DS_Store
+test/*.json
diff --git a/package.json b/package.json
index 4329f00..dfe8900 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,8 @@
   "scripts": {
     "sync-coinbase": "node --experimental-modules bin/sync-coinbase.mjs",
     "build-coinbase": "node --experimental-modules bin/build-coinbase.mjs",
-    "test": "node --test --experimental-modules test"
+    "test": "NODE_V8_COVERAGE=test node --test --experimental-test-coverage --experimental-modules",
+    "test:watch": "node --test --watch --test-reporter spec --experimental-modules"
   },
   "author": "Ivo von Putzer Reibegg <ivo.putzer@gmail.com> (https://github.com/ivoputzer)",
   "license": "MIT",
diff --git a/test/delete.me.later.mjs b/test/delete.me.later.mjs
deleted file mode 100644
index d7967ab..0000000
--- a/test/delete.me.later.mjs
+++ /dev/null
@@ -1,8 +0,0 @@
-import { ok } from 'node:assert'
-import { describe, it } from 'node:test'
-
-describe('finance.codin.xyz', () => {
-  it('should be ok', () => {
-    ok(true)
-  })
-})
diff --git a/test/lib/coinbase.mjs b/test/lib/coinbase.mjs
new file mode 100644
index 0000000..e69de29