jdk/test/java/nio/file/Files/ContentType.java
changeset 2057 3acf8e5e2ca0
child 3065 452aaa2899fc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/nio/file/Files/ContentType.java	Sun Feb 15 12:25:54 2009 +0000
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2008-2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+import java.nio.file.*;
+import java.io.*;
+
+/**
+ * Uses Files.probeContentType to probe html file and custom file type.
+ */
+
+public class ContentType {
+
+    static FileRef createHtmlFile() throws IOException {
+        Path file = File.createTempFile("foo", ".html").toPath();
+        OutputStream out = file.newOutputStream();
+        try {
+            out.write("<html><body>foo</body></html>".getBytes());
+        } finally {
+            out.close();
+        }
+
+        return file;
+    }
+
+    static FileRef createUnknownFile() throws IOException {
+        return File.createTempFile("unknown", "unknown-file-type-789").toPath();
+    }
+
+    static FileRef createGrapeFile() throws IOException {
+        return File.createTempFile("red", ".grape").toPath();
+    }
+
+    public static void main(String[] args) throws IOException {
+
+        // exercise default file type detector
+        FileRef file = createHtmlFile();
+        try {
+            String type = Files.probeContentType(file);
+            if (type == null) {
+                System.err.println("Content type cannot be determined - test skipped");
+            } else {
+                if (!type.equals("text/html"))
+                    throw new RuntimeException("Unexpected type: " + type);
+            }
+        } finally {
+            TestUtil.deleteUnchecked(file);
+        }
+        file = createUnknownFile();
+        try {
+            String type = Files.probeContentType(file);
+            if (type != null)
+                 throw new RuntimeException(file + " should not be recognized as:" +
+                     type);
+        } finally {
+            TestUtil.deleteUnchecked(file);
+        }
+
+        // exercise custom file type detector
+        file = createGrapeFile();
+        try {
+            String type = Files.probeContentType(file);
+            if (type == null)
+                throw new RuntimeException("Custom file type detector not installed?");
+            if (!type.equals("grape/unknown"))
+                throw new RuntimeException("Unexpected type: " + type);
+        } finally {
+            TestUtil.deleteUnchecked(file);
+        }
+
+    }
+}