filenameutilstestcase.java

java 的io 操作类 java 的io 操作类

        assertEquals(null, FilenameUtils.normalizeNoEndSeparator("//server/a/b/../../.."));
        assertEquals(SEP + SEP + "server" + SEP + "a" + SEP + "d", FilenameUtils.normalizeNoEndSeparator("//server/a/b/../c/../d"));
        assertEquals(SEP + SEP + "server" + SEP + "a" + SEP + "b" + SEP + "d", FilenameUtils.normalizeNoEndSeparator("//server/a/b//d"));
        assertEquals(SEP + SEP + "server" + SEP + "a" + SEP + "b", FilenameUtils.normalizeNoEndSeparator("//server/a/b/././."));
        assertEquals(SEP + SEP + "server" + SEP + "a", FilenameUtils.normalizeNoEndSeparator("//server/./a"));
        assertEquals(SEP + SEP + "server" + SEP + "", FilenameUtils.normalizeNoEndSeparator("//server/./"));
        assertEquals(SEP + SEP + "server" + SEP + "", FilenameUtils.normalizeNoEndSeparator("//server/."));
        assertEquals(null, FilenameUtils.normalizeNoEndSeparator("//server/../a"));
        assertEquals(null, FilenameUtils.normalizeNoEndSeparator("//server/.."));
        assertEquals(SEP + SEP + "server" + SEP + "", FilenameUtils.normalizeNoEndSeparator("//server/"));
    }

    //-----------------------------------------------------------------------
    public void testConcat() {
        assertEquals(null, FilenameUtils.concat("", null));
        assertEquals(null, FilenameUtils.concat(null, null));
        assertEquals(null, FilenameUtils.concat(null, ""));
        assertEquals(null, FilenameUtils.concat(null, "a"));
        assertEquals(SEP + "a", FilenameUtils.concat(null, "/a"));
        
        assertEquals(null, FilenameUtils.concat("", ":")); // invalid prefix
        assertEquals(null, FilenameUtils.concat(":", "")); // invalid prefix
        
        assertEquals("f" + SEP, FilenameUtils.concat("", "f/"));
        assertEquals("f", FilenameUtils.concat("", "f"));
        assertEquals("a" + SEP + "f" + SEP, FilenameUtils.concat("a/", "f/"));
        assertEquals("a" + SEP + "f", FilenameUtils.concat("a", "f"));
        assertEquals("a" + SEP + "b" + SEP + "f" + SEP, FilenameUtils.concat("a/b/", "f/"));
        assertEquals("a" + SEP + "b" + SEP + "f", FilenameUtils.concat("a/b", "f"));
        
        assertEquals("a" + SEP + "f" + SEP, FilenameUtils.concat("a/b/", "../f/"));
        assertEquals("a" + SEP + "f", FilenameUtils.concat("a/b", "../f"));
        assertEquals("a" + SEP + "c" + SEP + "g" + SEP, FilenameUtils.concat("a/b/../c/", "f/../g/"));
        assertEquals("a" + SEP + "c" + SEP + "g", FilenameUtils.concat("a/b/../c", "f/../g"));
        
        assertEquals("a" + SEP + "c.txt" + SEP + "f", FilenameUtils.concat("a/c.txt", "f"));
        
        assertEquals(SEP + "f" + SEP, FilenameUtils.concat("", "/f/"));
        assertEquals(SEP + "f", FilenameUtils.concat("", "/f"));
        assertEquals(SEP + "f" + SEP, FilenameUtils.concat("a/", "/f/"));
        assertEquals(SEP + "f", FilenameUtils.concat("a", "/f"));
        
        assertEquals(SEP + "c" + SEP + "d", FilenameUtils.concat("a/b/", "/c/d"));
        assertEquals("C:c" + SEP + "d", FilenameUtils.concat("a/b/", "C:c/d"));
        assertEquals("C:" + SEP + "c" + SEP + "d", FilenameUtils.concat("a/b/", "C:/c/d"));
        assertEquals("~" + SEP + "c" + SEP + "d", FilenameUtils.concat("a/b/", "~/c/d"));
        assertEquals("~user" + SEP + "c" + SEP + "d", FilenameUtils.concat("a/b/", "~user/c/d"));
        assertEquals("~" + SEP, FilenameUtils.concat("a/b/", "~"));
        assertEquals("~user" + SEP, FilenameUtils.concat("a/b/", "~user"));
    }

    //-----------------------------------------------------------------------
    public void testSeparatorsToUnix() {
        assertEquals(null, FilenameUtils.separatorsToUnix(null));
        assertEquals("/a/b/c", FilenameUtils.separatorsToUnix("/a/b/c"));
        assertEquals("/a/b/c.txt", FilenameUtils.separatorsToUnix("/a/b/c.txt"));
        assertEquals("/a/b/c", FilenameUtils.separatorsToUnix("/a/b\\c"));
        assertEquals("/a/b/c", FilenameUtils.separatorsToUnix("\\a\\b\\c"));
        assertEquals("D:/a/b/c", FilenameUtils.separatorsToUnix("D:\\a\\b\\c"));
    }

    public void testSeparatorsToWindows() {
        assertEquals(null, FilenameUtils.separatorsToWindows(null));
        assertEquals("\\a\\b\\c", FilenameUtils.separatorsToWindows("\\a\\b\\c"));
        assertEquals("\\a\\b\\c.txt", FilenameUtils.separatorsToWindows("\\a\\b\\c.txt"));
        assertEquals("\\a\\b\\c", FilenameUtils.separatorsToWindows("\\a\\b/c"));
        assertEquals("\\a\\b\\c", FilenameUtils.separatorsToWindows("/a/b/c"));
        assertEquals("D:\\a\\b\\c", FilenameUtils.separatorsToWindows("D:/a/b/c"));
    }

    public void testSeparatorsToSystem() {
        if (WINDOWS) {
            assertEquals(null, FilenameUtils.separatorsToSystem(null));
            assertEquals("\\a\\b\\c", FilenameUtils.separatorsToSystem("\\a\\b\\c"));
            assertEquals("\\a\\b\\c.txt", FilenameUtils.separatorsToSystem("\\a\\b\\c.txt"));
            assertEquals("\\a\\b\\c", FilenameUtils.separatorsToSystem("\\a\\b/c"));
            assertEquals("\\a\\b\\c", FilenameUtils.separatorsToSystem("/a/b/c"));
            assertEquals("D:\\a\\b\\c", FilenameUtils.separatorsToSystem("D:/a/b/c"));
        } else {
            assertEquals(null, FilenameUtils.separatorsToSystem(null));
            assertEquals("/a/b/c", FilenameUtils.separatorsToSystem("/a/b/c"));
            assertEquals("/a/b/c.txt", FilenameUtils.separatorsToSystem("/a/b/c.txt"));
            assertEquals("/a/b/c", FilenameUtils.separatorsToSystem("/a/b\\c"));
            assertEquals("/a/b/c", FilenameUtils.separatorsToSystem("\\a\\b\\c"));
            assertEquals("D:/a/b/c", FilenameUtils.separatorsToSystem("D:\\a\\b\\c"));
        }
    }

    //-----------------------------------------------------------------------
    public void testGetPrefixLength() {
        assertEquals(-1, FilenameUtils.getPrefixLength(null));
        assertEquals(-1, FilenameUtils.getPrefixLength(":"));
        assertEquals(-1, FilenameUtils.getPrefixLength("1:\\a\\b\\c.txt"));
        assertEquals(-1, FilenameUtils.getPrefixLength("1:"));
        assertEquals(-1, FilenameUtils.getPrefixLength("1:a"));
        assertEquals(-1, FilenameUtils.getPrefixLength("\\\\\\a\\b\\c.txt"));
        assertEquals(-1, FilenameUtils.getPrefixLength("\\\\a"));
        
        assertEquals(0, FilenameUtils.getPrefixLength(""));
        assertEquals(1, FilenameUtils.getPrefixLength("\\"));
        assertEquals(2, FilenameUtils.getPrefixLength("C:"));
        assertEquals(3, FilenameUtils.getPrefixLength("C:\\"));
        assertEquals(9, FilenameUtils.getPrefixLength("//server/"));
        assertEquals(2, FilenameUtils.getPrefixLength("~"));
        assertEquals(2, FilenameUtils.getPrefixLength("~/"));
        assertEquals(6, FilenameUtils.getPrefixLength("~user"));
        assertEquals(6, FilenameUtils.getPrefixLength("~user/"));
        
        assertEquals(0, FilenameUtils.getPrefixLength("a\\b\\c.txt"));
        assertEquals(1, FilenameUtils.getPrefixLength("\\a\\b\\c.txt"));
        assertEquals(2, FilenameUtils.getPrefixLength("C:a\\b\\c.txt"));
        assertEquals(3, FilenameUtils.getPrefixLength("C:\\a\\b\\c.txt"));
        assertEquals(9, FilenameUtils.getPrefixLength("\\\\server\\a\\b\\c.txt"));
        
        assertEquals(0, FilenameUtils.getPrefixLength("a/b/c.txt"));
        assertEquals(1, FilenameUtils.getPrefixLength("/a/b/c.txt"));
        assertEquals(3, FilenameUtils.getPrefixLength("C:/a/b/c.txt"));
        assertEquals(9, FilenameUtils.getPrefixLength("//server/a/b/c.txt"));
        assertEquals(2, FilenameUtils.getPrefixLength("~/a/b/c.txt"));
        assertEquals(6, FilenameUtils.getPrefixLength("~user/a/b/c.txt"));
        
        assertEquals(0, FilenameUtils.getPrefixLength("a\\b\\c.txt"));
        assertEquals(1, FilenameUtils.getPrefixLength("\\a\\b\\c.txt"));
        assertEquals(2, FilenameUtils.getPrefixLength("~\\a\\b\\c.txt"));
        assertEquals(6, FilenameUtils.getPrefixLength("~user\\a\\b\\c.txt"));
    }
    
    public void testIndexOfLastSeparator() {
        assertEquals(-1, FilenameUtils.indexOfLastSeparator(null));
        assertEquals(-1, FilenameUtils.indexOfLastSeparator("noseperator.inthispath"));
        assertEquals(3, FilenameUtils.indexOfLastSeparator("a/b/c"));
        assertEquals(3, FilenameUtils.indexOfLastSeparator("a\\b\\c"));
    }

    public void testIndexOfExtension() {
        assertEquals(-1, FilenameUtils.indexOfExtension(null));
        assertEquals(-1, FilenameUtils.indexOfExtension("file"));
        assertEquals(4, FilenameUtils.indexOfExtension("file.txt"));
        assertEquals(13, FilenameUtils.indexOfExtension("a.txt/b.txt/c.txt"));
        assertEquals(-1, FilenameUtils.indexOfExtension("a/b/c"));
        assertEquals(-1, FilenameUtils.indexOfExtension("a\\b\\c"));
        assertEquals(-1, FilenameUtils.indexOfExtension("a/b.notextension/c"));
        assertEquals(-1, FilenameUtils.indexOfExtension("a\\b.notextension\\c"));
    }

    //-----------------------------------------------------------------------
    public void testGetPrefix() {
        assertEquals(null, FilenameUtils.getPrefix(null));
        assertEquals(null, FilenameUtils.getPrefix(":"));
        assertEquals(null, FilenameUtils.getPrefix("1:\\a\\b\\c.txt"));
        assertEquals(null, FilenameUtils.getPrefix("1:"));
        assertEquals(null, FilenameUtils.getPrefix("1:a"));
        assertEquals(null, FilenameUtils.getPrefix("\\\\\\a\\b\\c.txt"));
        assertEquals(null, FilenameUtils.getPrefix("\\\\a"));
        
        assertEquals("", FilenameUtils.getPrefix(""));
        assertEquals("\\", FilenameUtils.getPrefix("\\"));
        assertEquals("C:", FilenameUtils.getPrefix("C:"));
        assertEquals("C:\\", FilenameUtils.getPrefix("C:\\"));
        assertEquals("//server/", FilenameUtils.getPrefix("//server/"));
        assertEquals("~/", FilenameUtils.getPrefix("~"));
        assertEquals("~/", FilenameUtils.getPrefix("~/"));
        assertEquals("~user/", FilenameUtils.getPrefix("~user"));
        assertEquals("~user/", FilenameUtils.getPrefix("~user/"));
        
        assertEquals("", FilenameUtils.getPrefix("a\\b\\c.txt"));
        assertEquals("\\", FilenameUtils.getPrefix("\\a\\b\\c.txt"));
        assertEquals("C:\\", FilenameUtils.getPrefix("C:\\a\\b\\c.txt"));
        assertEquals("\\\\server\\", FilenameUtils.getPrefix("\\\\server\\a\\b\\c.txt"));
        
        assertEquals("", FilenameUtils.getPrefix("a/b/c.txt"));
        assertEquals("/", FilenameUtils.getPrefix("/a/b/c.txt"));
        assertEquals("C:/", FilenameUtils.getPrefix("C:/a/b/c.txt"));
        assertEquals("//server/", FilenameUtils.getPrefix("//server/a/b/c.txt"));
        assertEquals("~/", FilenameUtils.getPrefix("~/a/b/c.txt"));
        assertEquals("~user/", FilenameUtils.getPrefix("~user/a/b/c.txt"));
        
        assertEquals("", FilenameUtils.getPrefix("a\\b\\c.txt"));
        assertEquals("\\", FilenameUtils.getPrefix("\\a\\b\\c.txt"));
        assertEquals("~\\", FilenameUtils.getPrefix("~\\a\\b\\c.txt"));
        assertEquals("~user\\", FilenameUtils.getPrefix("~user\\a\\b\\c.txt"));
    }

    public void testGetPath() {
        assertEquals(null, FilenameUtils.getPath(null));
        assertEquals("", FilenameUtils.getPath("noseperator.inthispath"));