Make entitlement IT tests reflective

This commit adds an EntitlementTest annotation that can be used on
classes containing test actions for entitlements. The annotation mirrors
the parameters of CheckAction. Only file check actions are currently
converted, the rest can be moved and annotated as followups. Note that
the check action name is simply the method name, no fancy name
manipulation is done.

Author: rjernst

libs/entitlement/qa/entitlement-test-plugin/src/main/java/org/elasticsearch/entitlement/qa/test/EntitlementTest.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the "Elastic License
+ * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
+ * Public License v 1"; you may not use this file except in compliance with, at
+ * your election, the "Elastic License 2.0", the "GNU Affero General Public
+ * License v3.0 only", or the "Server Side Public License, v 1".
+ */
+
+package org.elasticsearch.entitlement.qa.test;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface EntitlementTest {
+    enum ExpectedAccess {
+        PLUGINS,
+        ES_MODULES_ONLY,
+        ALWAYS_DENIED
+    }
+
+    ExpectedAccess expectedAccess();
+
+    int fromJavaVersion() default -1;
+}

libs/entitlement/qa/entitlement-test-plugin/src/main/java/org/elasticsearch/entitlement/qa/test/FileCheckActions.java

@@ -22,6 +22,8 @@
 import java.nio.file.attribute.UserPrincipal;
 import java.util.Scanner;
 
+import static org.elasticsearch.entitlement.qa.test.EntitlementTest.ExpectedAccess.PLUGINS;
+
 @SuppressForbidden(reason = "Explicitly checking APIs that are forbidden")
 class FileCheckActions {
 
@@ -43,38 +45,47 @@ private static Path readWriteFile() {
         return testRootDir.resolve("read_write_file");
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void createScannerFile() throws FileNotFoundException {
         new Scanner(readFile().toFile());
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void createScannerFileWithCharset() throws IOException {
         new Scanner(readFile().toFile(), StandardCharsets.UTF_8);
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void createScannerFileWithCharsetName() throws FileNotFoundException {
         new Scanner(readFile().toFile(), "UTF-8");
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void createFileOutputStreamString() throws IOException {
         new FileOutputStream(readWriteFile().toString()).close();
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void createFileOutputStreamStringWithAppend() throws IOException {
         new FileOutputStream(readWriteFile().toString(), false).close();
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void createFileOutputStreamFile() throws IOException {
         new FileOutputStream(readWriteFile().toFile()).close();
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void createFileOutputStreamFileWithAppend() throws IOException {
         new FileOutputStream(readWriteFile().toFile(), false).close();
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void filesProbeContentType() throws IOException {
         Files.probeContentType(readFile());
     }
 
+    @EntitlementTest(expectedAccess = PLUGINS)
     static void filesSetOwner() throws IOException {
         UserPrincipal owner = EntitledActions.getFileOwner(readWriteFile());
         Files.setOwner(readWriteFile(), owner); // set to existing owner, just trying to execute the method