test/jdk/java/lang/ProcessHandle/Basic.java
changeset 47216 71c04702a3d5
parent 45466 faf1c55d2046
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/lang/ProcessHandle/Basic.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,153 @@
+/*
+ * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertFalse;
+import static org.testng.Assert.assertTrue;
+import static org.testng.Assert.fail;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import org.testng.TestNG;
+import org.testng.annotations.Test;
+
+/*
+ * @test
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          jdk.management
+ * @build jdk.test.lib.Utils
+ *        jdk.test.lib.Asserts
+ *        jdk.test.lib.JDKToolFinder
+ *        jdk.test.lib.JDKToolLauncher
+ *        jdk.test.lib.Platform
+ *        jdk.test.lib.process.*
+ * @run testng Basic
+ * @summary Basic tests for ProcessHandler
+ * @author Roger Riggs
+ */
+public class Basic {
+    /**
+     * Tests of ProcessHandle.current.
+     */
+    @Test
+    public static void test1() {
+        try {
+            ProcessHandle self = ProcessHandle.current();
+            ProcessHandle self1 = ProcessHandle.current();
+            assertEquals(self, self1); //, "get pid twice should be same %d: %d");
+        } finally {
+            // Cleanup any left over processes
+            ProcessHandle.current().children().forEach(ProcessHandle::destroy);
+        }
+    }
+
+    /**
+     * Tests of ProcessHandle.get.
+     */
+    @Test
+    public static void test2() {
+        try {
+            ProcessHandle self = ProcessHandle.current();
+            long pid = self.pid();       // known native process id
+            Optional<ProcessHandle> self1 = ProcessHandle.of(pid);
+            assertEquals(self1.get(), self,
+                    "ProcessHandle.of(x.pid()) should be equal pid() %d: %d");
+
+            Optional<ProcessHandle> ph = ProcessHandle.of(pid);
+            assertEquals(pid, ph.get().pid());
+        } finally {
+            // Cleanup any left over processes
+            ProcessHandle.current().children().forEach(ProcessHandle::destroy);
+        }
+    }
+
+    @Test
+    public static void test3() {
+        // Test can get parent of current
+        ProcessHandle ph = ProcessHandle.current();
+        try {
+            Optional<ProcessHandle> pph = ph.parent();
+            assertTrue(pph.isPresent(), "Current has a Parent");
+        } finally {
+            // Cleanup any left over processes
+            ProcessHandle.current().children().forEach(ProcessHandle::destroy);
+        }
+    }
+
+    @Test
+    public static void test4() {
+        try {
+            Process p = new ProcessBuilder("sleep", "0").start();
+            p.waitFor();
+
+            long deadPid = p.pid();
+            p = null;               // Forget the process
+
+            Optional<ProcessHandle> t = ProcessHandle.of(deadPid);
+            assertFalse(t.isPresent(), "Handle created for invalid pid:" + t);
+        } catch (IOException | InterruptedException ex) {
+            fail("Unexpected exception", ex);
+        } finally {
+            // Cleanup any left over processes
+            ProcessHandle.current().children().forEach(ProcessHandle::destroy);
+        }
+    }
+
+    @Test
+    public static void test5() {
+        // Always contains itself.
+        ProcessHandle current = ProcessHandle.current();
+        List<ProcessHandle> list = ProcessHandle.allProcesses().collect(Collectors.toList());
+        if (!list.stream()
+                .anyMatch(ph -> ph.equals(ProcessHandle.current()))) {
+            System.out.printf("current: %s%n", current);
+            System.out.printf("all processes.size: %d%n", list.size());
+            list.forEach(p -> ProcessUtil.printProcess(p, "   allProcesses: "));
+            fail("current process not found in all processes");
+        }
+    }
+
+    @Test(expectedExceptions = IllegalStateException.class)
+    public static void test6() {
+        ProcessHandle.current().onExit();
+    }
+
+    @Test(expectedExceptions = IllegalStateException.class)
+    public static void test7() {
+        ProcessHandle.current().destroyForcibly();
+    }
+
+    // Main can be used to run the tests from the command line with only testng.jar.
+    @SuppressWarnings("raw_types")
+    public static void main(String[] args) {
+        Class<?>[] testclass = {TreeTest.class};
+        TestNG testng = new TestNG();
+        testng.setTestClasses(testclass);
+        testng.run();
+    }
+
+}