feat: add polyglot integration test for JS plugin deployment

- Create minimal test JS plugins (hello service + interceptor) in polyglot test resources
- Enable js-plugins-test.feature with @requires-graalvm tag
- RunnerIT conditionally excludes @requires-graalvm on non-GraalVM runtimes
- Verifies Source.findLanguage classloader fix and commonjs option removal

Author: mkjsix

core/src/test/java/karate/RunnerIT.java

@@ -22,6 +22,9 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import org.junit.jupiter.api.Test;
 import org.restheart.test.integration.AbstactIT;
 
@@ -36,10 +39,26 @@
 public class RunnerIT extends AbstactIT {
     @Test
     public void run() {
+        List<String> tags = new ArrayList<>(List.of("~@ignore", "~@helper"));
+
+        if (!isGraalVMRuntime()) {
+            // Skip polyglot tests on non-GraalVM runtimes (JS plugins won't load)
+            tags.add("~@requires-graalvm");
+        }
+
         var results = Runner.path("classpath:karate")
-                .tags("~@ignore", "~@helper")
+                .tags(tags.toArray(new String[0]))
                 .parallel(1);
 
         assertEquals(0, results.getFailCount());
     }
+
+    private static boolean isGraalVMRuntime() {
+        try {
+            Class.forName("org.graalvm.home.Version");
+            return true;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
 }

core/src/test/java/karate/js-plugins-test.feature

@@ -1,4 +1,4 @@
-@ignore
+@requires-graalvm
 Feature: Test javascript plugins
 
 Background:
@@ -14,18 +14,7 @@ Background:
     }
     """
 
-
-    * def basic =
-    """
-    function(creds) {
-    var temp = creds.username + ':' + creds.password;
-    var Base64 = Java.type('java.util.Base64');
-    var encoded = Base64.getEncoder().encodeToString(temp.toString().getBytes());
-    return 'Basic ' + encoded;
-    }
-    """
-
-    * def copyJsPluginDir = 
+    * def copyJsPluginDir =
     """
     function() {
         var CopyFolderRecursively = Java.type('karate.CopyFolderRecursively');
@@ -34,58 +23,26 @@ Background:
     }
     """
 
-    * def admin = basic({username: 'admin', password: 'secret'})
+    * def basic =
+    """
+    function(creds) {
+        var temp = creds.username + ':' + creds.password;
+        var Base64 = Java.type('java.util.Base64');
+        var encoded = Base64.getEncoder().encodeToString(temp.toString().getBytes());
+        return 'Basic ' + encoded;
+    }
+    """
 
+    * def admin = basic({username: 'admin', password: 'secret'})
 
-Scenario: Test hello
+Scenario: Load JS plugins and test hello service
     * call copyJsPluginDir
     * call sleep 10
-    Given path '/hello'
-    When method GET
-    Then status 200
-    And match response == {"msg":"Hello World from Italy with Love","note":"'from Italy with Love' was added by 'helloWorldInterceptor' that modifies the response of 'helloWorldService'"}
-
-
-Scenario: Test sub hello
-
-    Given path '/sub/hello'
-    When method GET
-    Then status 200
-
-
-Scenario: Test http client
-
-    Given path '/httpClient'
-    When method GET
-    Then status 200
-
-
-Scenario: Test mclient-service
-
-    # create test-db
     * header Authorization = admin
-    Given path '/test-db'
-    When method PUT
-    * def ETAG = responseHeaders['ETag'][0]
-    
-
-    # create collection coll
-    * header Authorization = admin
-    Given path '/test-db/coll'
-    When method PUT
-    
-
-    # send request
-    * header Authorization = admin
-    Given path '/mclientService'
+    Given path '/hello'
     When method GET
     Then status 200
-
-
-    # delete test-db
-    * headers { "Authorization" : '#(admin)', "If-Match" : "#(ETAG)" }
-    Given path '/test-db'
-    When method DELETE
-    And status 204
+    And match response.msg == 'Hello World!'
+    And match response.note == 'modified by helloWorldInterceptor'
 
 

polyglot/src/test/resources/test-js-plugins/hello-interceptor.mjs

@@ -0,0 +1,15 @@
+export const options = {
+    name: "helloWorldInterceptor",
+    description: "modifies the response of helloWorldService",
+    interceptPoint: "RESPONSE"
+}
+
+export function handle(req, res) {
+    var body = JSON.parse(res.getContent());
+    body.note = "modified by helloWorldInterceptor";
+    res.setContent(JSON.stringify(body));
+}
+
+export function resolve(req) {
+    return req.isHandledBy("helloWorldService") && req.isGet();
+}

polyglot/src/test/resources/test-js-plugins/hello.mjs

@@ -0,0 +1,14 @@
+export const options = {
+    name: "helloWorldService",
+    description: "just another Hello World",
+    uri: "/hello",
+    secured: false,
+    matchPolicy: "EXACT"
+}
+
+export function handle(req, res) {
+    if (req.isGet()) {
+        res.setContent(JSON.stringify({ msg: "Hello World!" }));
+        res.setContentTypeAsJson();
+    }
+}

polyglot/src/test/resources/test-js-plugins/package.json

@@ -0,0 +1,4 @@
+{
+    "rh:services": ["hello.mjs"],
+    "rh:interceptors": ["hello-interceptor.mjs"]
+}