test/jdk/java/nio/file/attribute/BasicFileAttributeView/SetTimesNanos.java

*** 20,32 ****
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  /* @test
!  * @bug 8181493
   * @summary Verify that nanosecond precision is maintained for file timestamps
!  * @requires (os.family == "linux") | (os.family == "mac") | (os.family == "solaris")
   * @modules java.base/sun.nio.fs:+open
   */
  
  import java.io.IOException;
  import java.lang.reflect.Method;
--- 20,32 ----
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  /* @test
!  * @bug 8181493 8231174
   * @summary Verify that nanosecond precision is maintained for file timestamps
!  * @requires (os.family == "linux") | (os.family == "mac") | (os.family == "solaris") | (os.family == "windows")
   * @modules java.base/sun.nio.fs:+open
   */
  
  import java.io.IOException;
  import java.lang.reflect.Method;
*** 38,64 ****
  import java.nio.file.attribute.FileTime;
  import java.util.Set;
  import java.util.concurrent.TimeUnit;
  
  public class SetTimesNanos {
      public static void main(String[] args) throws Exception {
          // Check whether futimens() system call is supported
!         Class unixNativeDispatcherClass = Class.forName("sun.nio.fs.UnixNativeDispatcher");
!         Method futimensSupported = unixNativeDispatcherClass.getDeclaredMethod("futimensSupported");
          futimensSupported.setAccessible(true);
          if (!(boolean)futimensSupported.invoke(null)) {
!             System.err.println("futimens() system call not supported; skipping test");
              return;
          }
  
          Path dirPath = Path.of("test");
          Path dir = Files.createDirectory(dirPath);
          FileStore store = Files.getFileStore(dir);
          System.out.format("FileStore: \"%s\" on %s (%s)%n",
              dir, store.name(), store.type());
  
!         Set<String> testedTypes = Set.of("apfs", "ext4", "xfs", "zfs");
          if (!testedTypes.contains(store.type())) {
              System.err.format("%s not in %s; skipping test", store.type(), testedTypes);
              return;
          }
  
--- 38,72 ----
  import java.nio.file.attribute.FileTime;
  import java.util.Set;
  import java.util.concurrent.TimeUnit;
  
  public class SetTimesNanos {
+     private static final boolean IS_WINDOWS =
+         System.getProperty("os.name").startsWith("Windows");
+ 
      public static void main(String[] args) throws Exception {
+         if (!IS_WINDOWS) {
              // Check whether futimens() system call is supported
!             Class unixNativeDispatcherClass =
!                 Class.forName("sun.nio.fs.UnixNativeDispatcher");
!             Method futimensSupported =
!                 unixNativeDispatcherClass.getDeclaredMethod("futimensSupported");
              futimensSupported.setAccessible(true);
              if (!(boolean)futimensSupported.invoke(null)) {
!                 System.err.println("futimens() not supported; skipping test");
                  return;
              }
+         }
  
          Path dirPath = Path.of("test");
          Path dir = Files.createDirectory(dirPath);
          FileStore store = Files.getFileStore(dir);
          System.out.format("FileStore: \"%s\" on %s (%s)%n",
              dir, store.name(), store.type());
  
!         Set<String> testedTypes = IS_WINDOWS ?
!             Set.of("NTFS") : Set.of("apfs", "ext4", "xfs", "zfs");
          if (!testedTypes.contains(store.type())) {
              System.err.format("%s not in %s; skipping test", store.type(), testedTypes);
              return;
          }
  
*** 75,84 ****
--- 83,97 ----
          FileTime pathTime = FileTime.from(timeNanos, TimeUnit.NANOSECONDS);
          BasicFileAttributeView view =
              Files.getFileAttributeView(path, BasicFileAttributeView.class);
          view.setTimes(pathTime, pathTime, null);
  
+         // Windows file time resolution is 100ns so truncate
+         if (IS_WINDOWS) {
+             timeNanos = 100L*(timeNanos/100L);
+         }
+ 
          // Read attributes
          BasicFileAttributes attrs =
              Files.readAttributes(path, BasicFileAttributes.class);
  
          // Check timestamps