test(script-engine): add test for PyTermFactory execution within the …

…guest language (Python) using the polyglot api

src/test/java/org/topbraid/shacl/TestGraalPyScriptEngine.java

@@ -1,22 +1,35 @@
 package org.topbraid.shacl;
 
+import org.graalvm.polyglot.Context;
 import org.graalvm.polyglot.Value;
 import org.junit.Test;
+import org.topbraid.shacl.py.GraalPyScriptEngine;
 import org.topbraid.shacl.py.PyScriptEngine;
 import org.topbraid.shacl.py.PyScriptEngineFactory;
+import org.topbraid.shacl.py.model.PyLiteral;
+import org.topbraid.shacl.py.model.PyTermFactory;
 
-import javax.script.ScriptException;
 import java.util.Objects;
 
 public class TestGraalPyScriptEngine {
 
+    private static final String VALUE = "testEngine";
+
+    private static final String LANG = "en";
+
     @Test
-    public void testEngine() throws ScriptException {
+    public void testEngine() {
         PyScriptEngine engine = PyScriptEngineFactory.get().createScriptEngine("Graal");
-        Value value = (Value) engine.eval("[1,2,42,4]");
-        int element = value.getArrayElement(2).asInt();
-        assert Objects.equals(element, 42);
-        // TODO add test with TermFactory
+        Context context = ((GraalPyScriptEngine) engine).getContext();
+        context.getPolyglotBindings().putMember("PyTermFactory", new PyTermFactory());
+        Value value = context.eval("python",
+                "import polyglot \n" +
+                        "py_tf = polyglot.import_value('PyTermFactory')\n" +
+                        "py_tf.literal(\"" + VALUE + "\", \"" + LANG + "\")");
+        System.out.println(value.toString());
+        PyLiteral tf = new PyTermFactory().literal(VALUE, LANG);
+        assert Objects.equals(value.toString(), tf.toString());
+        context.close();
     }
 
 }