JENKINS-41805 Cleanup workspace suffixes (#4824)

core/src/test/java/hudson/FilePathTest.java

@@ -28,6 +28,7 @@ import hudson.model.TaskListener;
 import hudson.os.PosixAPI;
 import hudson.os.WindowsUtil;
 import hudson.remoting.VirtualChannel;
+import hudson.slaves.WorkspaceList;
 import hudson.util.NullStream;
 import hudson.util.StreamTaskListener;
 import org.apache.commons.io.FileUtils;
@@ -810,6 +811,20 @@ public class FilePathTest {
         assertFalse("could not delete target", Files.exists(toDelete));
     }
 
+    @Test
+    @Issue("JENKINS-44909")
+    public void deleteSuffixesRecursive() throws Exception {
+        File deleteSuffixesRecursiveFolder = temp.newFolder("deleteSuffixesRecursive");
+        FilePath filePath = new FilePath(deleteSuffixesRecursiveFolder);
+        FilePath suffix = filePath.withSuffix(WorkspaceList.COMBINATOR + "suffixed");
+        FilePath textTempFile = suffix.createTextTempFile("tmp", null, "dummy", true);
+
+        assertThat(textTempFile.exists(), is(true));
+        
+        filePath.deleteSuffixesRecursive();
+        assertThat(textTempFile.exists(), is(false));
+    }
+
     @Test public void deleteRecursiveOnWindows() throws Exception {
         assumeTrue("Uses Windows-specific features", Functions.isWindows());
         Path targetDir = temp.newFolder("targetDir").toPath();