8223771: FileSystemProvider.newFileSystem(Path, Map) should throw IOException when called with a file that cannot be open

Reviewed-by: alanb

src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipFileSystem.java

@@ -138,7 +138,7 @@ class ZipFileSystem extends FileSystem {
                     new END().write(os, 0, forceEnd64);
                 }
             } else {
-                throw new FileSystemNotFoundException(zfpath.toString());
+                throw new NoSuchFileException(zfpath.toString());
             }
         }
         // sm and existence check

test/jdk/jdk/nio/zipfs/NonExistentPathTests.java

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2019, 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 org.testng.annotations.BeforeTest;
+import org.testng.annotations.Test;
+
+import java.io.IOException;
+import java.net.URI;
+import java.nio.file.FileSystemNotFoundException;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.util.Map;
+
+import static org.testng.Assert.assertThrows;
+
+/**
+ * @test
+ * @bug 8223771
+ * @summary Validate the correct Exception is thrown if the Zip/JAR is not found
+ *
+ * @modules jdk.zipfs
+ * @run testng/othervm NonExistentPathTests
+ */
+public class NonExistentPathTests {
+    private static final String ZIPFS_SCHEME = "jar";
+    private static final ClassLoader CLASS_LOADER = null;
+    // Non-exist JAR file to test against
+    private static final Path INVALID_JAR_FILE = Path.of("jarDoesNotExist.jar");
+    // Standard Exception expected from FileSystems.newFileSystem
+    private static Class<? extends Exception> testException = IOException.class;
+
+    /**
+     * Validate that the correct Exception is thrown  when specifying a Path
+     * to a JAR that does not exist and is not being created.
+     */
+    @Test
+    public void testNewFileSystemWithPath() {
+        assertThrows(testException, () ->
+                FileSystems.newFileSystem(INVALID_JAR_FILE));
+        assertThrows(testException, () ->
+                FileSystems.newFileSystem(INVALID_JAR_FILE, Map.of()));
+        assertThrows(testException, () ->
+                FileSystems.newFileSystem(INVALID_JAR_FILE, CLASS_LOADER));
+        assertThrows(testException, () ->
+                FileSystems.newFileSystem(INVALID_JAR_FILE, Map.of(), CLASS_LOADER));
+    }
+
+    /**
+     * Validate that the correct Exception is thrown  when specifying a URI
+     * to a JAR that does not exist and is not being created.
+     */
+    @Test
+    public void testNewFileSystemWithUri() throws Exception {
+        var jarURI = new URI(ZIPFS_SCHEME,
+                INVALID_JAR_FILE.toUri().toString(), null);
+
+        assertThrows(testException, () ->
+                FileSystems.newFileSystem(jarURI, Map.of()));
+
+        assertThrows(testException, () ->
+                FileSystems.newFileSystem(jarURI, Map.of(), CLASS_LOADER));
+    }
+}