chore: add unit and sample tests

Author: kgala2

.cl/cloudbuild.yaml

@@ -22,11 +22,34 @@ steps:
     args:
       - "-c"
       - |
-        npm link
-        npm link @google-cloud/cloud-sql-connector
         npx tap -c -t0 --disable-coverage --allow-empty-coverage system-test -o test_results.tap
         cat test_results.tap | npx tap - --reporter=junit > sponge_log.xml
     timeout: 300s
+  - id: run sample tests
+    name: node:latest
+    entrypoint: bash
+    env: 
+      - "IP_TYPE=PRIVATE"
+    secretEnv: ['MYSQL_CONNECTION_NAME', 'MYSQL_USER', 'MYSQL_IAM_USER', 'MYSQL_PASS', 'MYSQL_DB', 'POSTGRES_CONNECTION_NAME', 'POSTGRES_USER', 'POSTGRES_IAM_USER', 'POSTGRES_PASS', 'POSTGRES_DB', 'POSTGRES_CAS_CONNECTION_NAME', 'POSTGRES_CAS_PASS', 'POSTGRES_CUSTOMER_CAS_CONNECTION_NAME', 'POSTGRES_CUSTOMER_CAS_PASS', 'POSTGRES_CUSTOMER_CAS_DOMAIN_NAME', 'POSTGRES_CUSTOMER_CAS_INVALID_DOMAIN_NAME', 'SQLSERVER_CONNECTION_NAME', 'SQLSERVER_USER', 'SQLSERVER_PASS', 'SQLSERVER_DB']
+    args:
+      - "-c"
+      - |
+        npm link
+        npm link @google-cloud/cloud-sql-connector
+        npx tap -c -t0 --disable-coverage --allow-empty-coverage examples/*/*/test/*{.cjs,.mjs,.ts} -o test_results.tap
+    timeout: 300s
+  - id: run unit tests
+    name: node:latest
+    entrypoint: bash
+    env: 
+      - "TAP_DISABLE_COVERAGE=1"
+      - "TAP_ALLOW_MISSING_COVERAGE=1"
+      - "TAP_ALLOW_INCOMPLETE_COVERAGE=1"
+      - "TAP_ALLOW_EMPTY_COVERAGE=1"
+    args:
+      - "-c"
+      - |
+        npx tap -c -t0 -o test_results.tap test
 availableSecrets:
   secretManager:
   - versionName: 'projects/$PROJECT_ID/secrets/MYSQL_CONNECTION_NAME/versions/latest'