jdk/test/java/lang/StackTraceElement/ModuleFrames.java

@@ -25,10 +25,13 @@
  * @test
  * @summary Stack trace should have module information
  * @run testng ModuleFrames
  */
 
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.Arrays;
 
 import org.testng.annotations.Test;
 import static org.testng.Assert.*;
 

@@ -45,15 +48,31 @@
             StackTraceElement thisFrame = findFrame(this.getClass().getName(), stack);
 
             assertEquals(topFrame.getModuleName(), "java.base",
                     "Expected top frame to be in module java.base");
 
-            assertTrue(topFrame.toString().contains("java.base"),
-                    "Expected toString of top frame to include java.base");
+            assertTrue(topFrame.toString().startsWith("java.base"),
+                    "Expected toString of top frame to omit loader name, start with module name: java.base");
+
+            assertTrue(!topFrame.toString().contains("@"),
+                    "Expected toString of top frame not to include module version ('@')");
+
+            Path home = Paths.get(System.getProperty("java.home"));
+            boolean isImage = Files.exists(home.resolve("lib").resolve("modules"));
+            if (isImage) {
+                assertTrue(!topFrame.getModuleVersion().isEmpty(),
+                        "Expected non-empty STE.getModuleVersion() for top frame");
+            }
 
             assertNull(thisFrame.getModuleName(),
                     "Expected frame for test not to have a module name");
+
+            assertTrue(thisFrame.toString().startsWith(this.getClass().getName()),
+                    "Expected toString to start with class name (no loader or module name");
+
+            assertEquals(thisFrame.getClassLoaderName(), "app",
+                    "Expect STE to have loader name of \"app\"");
         }
     }
 
     private static StackTraceElement findFrame(String cn, StackTraceElement[] stack) {
         return Arrays.stream(stack)