diff --git a/test/test_latest.sh b/test/test_latest.sh
index 897c5c4..a2fb18d 100644
--- a/test/test_latest.sh
+++ b/test/test_latest.sh
@@ -1 +1,32 @@
-echo "this runs within latest container!";
+#!/bin/bash
+set -e
+
+echo "Testing latest image..."
+
+# Test NVM
+echo "Testing NVM..."
+nvm --version
+
+# Test Node.js
+echo "Testing Node.js..."
+node --version
+
+# Test pnpm
+echo "Testing pnpm..."
+pnpm --version
+
+# Test Bun
+echo "Testing Bun..."
+bun --version
+
+# Test Deno
+echo "Testing Deno..."
+deno --version
+
+# Test NVM version switching
+echo "Testing NVM version switching..."
+nvm install 22
+nvm use 22
+node --version | grep v22
+
+echo "latest tests passed!"
diff --git a/test/test_npmci.sh b/test/test_npmci.sh
index 7f53eb0..6e6d677 100644
--- a/test/test_npmci.sh
+++ b/test/test_npmci.sh
@@ -1,3 +1,6 @@
+#!/bin/bash
+set -e
+
 # check if npmci is available
 npm init -y
 npmci -v
diff --git a/test/test_stable.sh b/test/test_stable.sh
index 8d73ed1..6084e2c 100644
--- a/test/test_stable.sh
+++ b/test/test_stable.sh
@@ -1,3 +1,6 @@
+#!/bin/bash
+set -e
+
 # npm
 npm -v
 node -v