jdk/test/java/nio/file/Files/probeContentType/Basic.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2008, 2016, 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.
  */

 /* @test
  * @bug 4313887 8129632 8129633 8162624
  * @summary Unit test for probeContentType method
  * @library ../..
  * @build Basic SimpleFileTypeDetector
  * @run main/othervm Basic
  */

 import java.io.*;
 import java.nio.file.*;
 import java.util.stream.Stream;

 /**
  * Uses Files.probeContentType to probe html file, custom file type, and minimal
  * set of file extension to content type mappings.
  */
 public class Basic {

     private static final boolean IS_UNIX =
         ! System.getProperty("os.name").startsWith("Windows");

     static Path createHtmlFile() throws IOException {
         Path file = Files.createTempFile("foo", ".html");
         try (OutputStream out = Files.newOutputStream(file)) {
             out.write("<html><body>foo</body></html>".getBytes());
         }

         return file;
     }

     static Path createGrapeFile() throws IOException {
         return Files.createTempFile("red", ".grape");
     }

     private static int checkContentTypes(String expected, String actual) {
         assert expected != null;
         assert actual != null;

         if (!expected.equals(actual)) {
             if (IS_UNIX) {
                 Path userMimeTypes =
                     Paths.get(System.getProperty("user.home"), ".mime.types");
                 if (!Files.exists(userMimeTypes)) {
                     System.out.println(userMimeTypes + " does not exist");
                 } else if (!Files.isReadable(userMimeTypes)) {
                     System.out.println(userMimeTypes + " is not readable");
                 } else {
                     System.out.println(userMimeTypes + " contents:");
                     try (Stream<String> lines = Files.lines(userMimeTypes)) {
                         lines.forEach(System.out::println);
                         System.out.println("");
                     } catch (IOException ioe) {
                         System.err.println("Problem reading "
                                            + userMimeTypes);
                     }
                 }

                 Path etcMimeTypes = Paths.get("/etc/mime.types");
                 if (!Files.exists(etcMimeTypes)) {
                     System.out.println(etcMimeTypes + " does not exist");
                 } else if (!Files.isReadable(etcMimeTypes)) {
                     System.out.println(etcMimeTypes + " is not readable");
                 } else {
                     System.out.println(etcMimeTypes + " contents:");
                     try (Stream<String> lines = Files.lines(etcMimeTypes)) {
                         lines.forEach(System.out::println);
                         System.out.println("");
                     } catch (IOException ioe) {
                         System.err.println("Problem reading "
                                            + etcMimeTypes);
                     }
                 }
             }

             System.err.println("Expected \"" + expected
                                + "\" but obtained \""
                                + actual + "\"");

             return 1;
         }

         return 0;
     }

     static int checkOSXContentTypes(String[] extensions, String[] expectedTypes)
         throws IOException {
         if (extensions.length != expectedTypes.length) {
             throw new IllegalArgumentException
                 ("Parameter array lengths differ");
         }

         int failures = 0;
         for (int i = 0; i < extensions.length; i++) {
             String extension = extensions[i];
             Path file = Files.createTempFile("foo", "." + extension);
             try {
                 String type = Files.probeContentType(file);
                 if (type == null) {
                     System.err.println("Content type of " + extension
                             + " cannot be determined");
                     failures++;
                 } else {
                     if (!type.equals(expectedTypes[i])) {
                         System.err.println("Content type: " + type
                                 + "; expected: " + expectedTypes[i]);
                         failures++;
                     }
                 }
             } finally {
                 Files.delete(file);
             }
         }

         return failures;
     }

     public static void main(String[] args) throws IOException {
         int failures = 0;

         // exercise default file type detector
         Path file = createHtmlFile();
         try {
             String type = Files.probeContentType(file);
             if (type == null) {
                 System.err.println("Content type cannot be determined - test skipped");
             } else {
                 failures += checkContentTypes("text/html", type);
             }
         } finally {
             Files.delete(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?");
             failures += checkContentTypes("grape/unknown", type);
         } finally {
             Files.delete(file);
         }

         // Verify that common file extensions are mapped to the correct content
         // types on Mac OS X only which has consistent Uniform Type Identifiers.
         if (System.getProperty("os.name").contains("OS X")) {
             String[] extensions = new String[]{
                 "jpg", "mp3", "mp4", "pdf", "png"
             };
             String[] expectedTypes = new String[]{
                 "image/jpeg", "audio/mpeg", "video/mp4", "application/pdf",
                 "image/png"
             };
             failures += checkOSXContentTypes(extensions, expectedTypes);
         }

         if (failures > 0) {
             throw new RuntimeException("Test failed!");
         }
     }
 }
	/*
	* Copyright (c) 2008, 2016, 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.
	*/

	/* @test
	* @bug 4313887 8129632 8129633 8162624
	* @summary Unit test for probeContentType method
	* @library ../..
	* @build Basic SimpleFileTypeDetector
	* @run main/othervm Basic
	*/

	import java.io.*;
	import java.nio.file.*;
	import java.util.stream.Stream;

	/**
	* Uses Files.probeContentType to probe html file, custom file type, and minimal
	* set of file extension to content type mappings.
	*/
	public class Basic {

	private static final boolean IS_UNIX =
	! System.getProperty("os.name").startsWith("Windows");

	static Path createHtmlFile() throws IOException {
	Path file = Files.createTempFile("foo", ".html");
	try (OutputStream out = Files.newOutputStream(file)) {
	out.write("<html><body>foo</body></html>".getBytes());
	}

	return file;
	}

	static Path createGrapeFile() throws IOException {
	return Files.createTempFile("red", ".grape");
	}

	private static int checkContentTypes(String expected, String actual) {
	assert expected != null;
	assert actual != null;

	if (!expected.equals(actual)) {
	if (IS_UNIX) {
	Path userMimeTypes =
	Paths.get(System.getProperty("user.home"), ".mime.types");
	if (!Files.exists(userMimeTypes)) {
	System.out.println(userMimeTypes + " does not exist");
	} else if (!Files.isReadable(userMimeTypes)) {
	System.out.println(userMimeTypes + " is not readable");
	} else {
	System.out.println(userMimeTypes + " contents:");
	try (Stream<String> lines = Files.lines(userMimeTypes)) {
	lines.forEach(System.out::println);
	System.out.println("");
	} catch (IOException ioe) {
	System.err.println("Problem reading "
	+ userMimeTypes);
	}
	}

	Path etcMimeTypes = Paths.get("/etc/mime.types");
	if (!Files.exists(etcMimeTypes)) {
	System.out.println(etcMimeTypes + " does not exist");
	} else if (!Files.isReadable(etcMimeTypes)) {
	System.out.println(etcMimeTypes + " is not readable");
	} else {
	System.out.println(etcMimeTypes + " contents:");
	try (Stream<String> lines = Files.lines(etcMimeTypes)) {
	lines.forEach(System.out::println);
	System.out.println("");
	} catch (IOException ioe) {
	System.err.println("Problem reading "
	+ etcMimeTypes);
	}
	}
	}

	System.err.println("Expected \"" + expected
	+ "\" but obtained \""
	+ actual + "\"");

	return 1;
	}

	return 0;
	}

	static int checkOSXContentTypes(String[] extensions, String[] expectedTypes)
	throws IOException {
	if (extensions.length != expectedTypes.length) {
	throw new IllegalArgumentException
	("Parameter array lengths differ");
	}

	int failures = 0;
	for (int i = 0; i < extensions.length; i++) {
	String extension = extensions[i];
	Path file = Files.createTempFile("foo", "." + extension);
	try {
	String type = Files.probeContentType(file);
	if (type == null) {
	System.err.println("Content type of " + extension
	+ " cannot be determined");
	failures++;
	} else {
	if (!type.equals(expectedTypes[i])) {
	System.err.println("Content type: " + type
	+ "; expected: " + expectedTypes[i]);
	failures++;
	}
	}
	} finally {
	Files.delete(file);
	}
	}

	return failures;
	}

	public static void main(String[] args) throws IOException {
	int failures = 0;

	// exercise default file type detector
	Path file = createHtmlFile();
	try {
	String type = Files.probeContentType(file);
	if (type == null) {
	System.err.println("Content type cannot be determined - test skipped");
	} else {
	failures += checkContentTypes("text/html", type);
	}
	} finally {
	Files.delete(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?");
	failures += checkContentTypes("grape/unknown", type);
	} finally {
	Files.delete(file);
	}

	// Verify that common file extensions are mapped to the correct content
	// types on Mac OS X only which has consistent Uniform Type Identifiers.
	if (System.getProperty("os.name").contains("OS X")) {
	String[] extensions = new String[]{
	"jpg", "mp3", "mp4", "pdf", "png"
	};
	String[] expectedTypes = new String[]{
	"image/jpeg", "audio/mpeg", "video/mp4", "application/pdf",
	"image/png"
	};
	failures += checkOSXContentTypes(extensions, expectedTypes);
	}

	if (failures > 0) {
	throw new RuntimeException("Test failed!");
	}
	}
	}