The test class for the issue

src/test/java/org/casbin/MenuTest.java

@@ -0,0 +1,75 @@
+package org.casbin;
+
+import org.casbin.jcasbin.main.Enforcer;
+import org.junit.jupiter.api.Test;
+
+import java.io.BufferedWriter;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+
+public class MenuTest {
+    @Test
+    public void testMenu() {
+        //model.conf and policy.csv are in the examples/casbin directory
+        Enforcer enforcer = new Enforcer("examples/casbin/model.conf","examples/casbin/policy.csv");
+        List<String> perms = Arrays.asList(
+                        //	ROLE_ROOT	ROLE_ADMIN	ROLE_USER
+            "SystemMenu",         //	✅	❌	❌
+            "UserMenu",           //	❌	✅	✅
+            "UserSubMenu_allow",  //	❌	✅	✅
+            "UserSubSubMenu",     //	❌	✅	✅
+            "UserSubMenu_deny",   //	❌	✅	❌
+            "AdminMenu",          //	✅	✅	❌
+            "AdminSubMenu_allow", //	✅	✅	❌
+            "AdminSubMenu_deny"   //	✅	❌	❌
+        );
+
+        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(System.out));
+        // Store the expected results
+        List<String> expectedPermissions = Arrays.asList("✅", "❌", "❌", "❌", "✅", "✅", "❌","✅", "✅","❌","✅","✅","❌","✅","❌","✅","✅","❌","✅","✅","❌","✅","❌","❌");
+        List<String> actualPermissions = new ArrayList<>();
+
+        // Read permissions for testing
+        for (String obj : perms) {
+            try {
+                // Write test results in format
+                writer.write(obj + repeat(" ",30 - obj.length()));
+                for (String sub : new String[]{"ROLE_ROOT", "ROLE_ADMIN", "ROLE_USER"}) {
+                    boolean ok = enforcer.enforce(sub, obj, "read");
+                    actualPermissions.add(ok ? "✅":  "❌");
+                    writer.write(ok ? "✅\t":  "❌\t");
+                }
+                writer.write("\n");
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
+
+        try {
+            writer.flush();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        // Compare expected results with actual results, if they do not match, the test fails
+        if (!expectedPermissions.toString().equals(actualPermissions.toString())) {
+           throw new RuntimeException("don't match");
+        }
+    }
+
+
+
+    private String repeat(String str, int times) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < times; i++) {
+            sb.append(str);
+        }
+
+        return sb.toString();
+    }
+}
+