Try debug NPE

Author: Markoutte

utbot-instrumentation/src/test/kotlin/org/utbot/instrumentation/security/SecurityTest.kt

@@ -0,0 +1,57 @@
+package org.utbot.instrumentation.security
+
+import org.junit.jupiter.api.Assertions.*
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+import org.utbot.instrumentation.process.permissions
+import org.utbot.instrumentation.process.sandbox
+import java.lang.NullPointerException
+import java.security.AccessControlException
+import java.security.AllPermission
+import java.security.BasicPermission
+import java.security.Permission
+import java.util.PropertyPermission
+
+class SecurityTest {
+
+    @BeforeEach
+    fun init() {
+        permissions {
+            +AllPermission()
+        }
+    }
+
+    @Test
+    fun `basic security works`() {
+        sandbox {
+            assertThrows<AccessControlException> {
+                System.getProperty("any")
+            }
+        }
+    }
+
+    @Test
+    fun `basic permission works`() {
+        sandbox(listOf(PropertyPermission("java.version", "read"))) {
+            val result = System.getProperty("java.version")
+            assertNotNull(result)
+            assertThrows<AccessControlException> {
+                System.setProperty("any_random_value_key", "random")
+            }
+        }
+    }
+
+    @Test
+    fun `null is ok`() {
+        val empty = object : BasicPermission("*") {}
+        val field = Permission::class.java.getDeclaredField("name")
+        field.isAccessible = true
+        field.set(empty, null)
+        val collection = empty.newPermissionCollection()
+        assertThrows<NullPointerException> {
+            collection.implies(empty)
+        }
+    }
+
+}