filesystemutilstestcase.java

java 的io 操作类 java 的io 操作类

        String lines =
            " Volume in drive C is HDD\n" +
            " Volume Serial Number is XXXX-YYYY\n" +
            "\n" +
            " Directory of C:\\Documents and Settings\\empty" +
            "\n";
        FileSystemUtils fsu = new MockFileSystemUtils(1, lines);
        try {
            fsu.freeSpaceWindows("C:");
            fail();
        } catch (IOException ex) {}
    }

    //-----------------------------------------------------------------------
    public void testGetFreeSpaceUnix_String_EmptyPath() throws Exception {
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "xxx:/home/users/s     14428928  12956424   1472504  90% /home/users/s";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        try {
            fsu.freeSpaceUnix("", false, false);
            fail();
        } catch (IllegalArgumentException ex) {}
        try {
            fsu.freeSpaceUnix("", true, false);
            fail();
        } catch (IllegalArgumentException ex) {}
        try {
            fsu.freeSpaceUnix("", true, true);
            fail();
        } catch (IllegalArgumentException ex) {}
        try {
            fsu.freeSpaceUnix("", false, true);
            fail();
        } catch (IllegalArgumentException ex) {}
        
    }

    public void testGetFreeSpaceUnix_String_NormalResponseLinux() throws Exception {
        // from Sourceforge 'GNU bash, version 2.05b.0(1)-release (i386-redhat-linux-gnu)'
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "/dev/xxx                497944    308528    189416  62% /";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        assertEquals(189416L, fsu.freeSpaceUnix("/", false, false));
    }

    public void testGetFreeSpaceUnix_String_NormalResponseFreeBSD() throws Exception {
        // from Apache 'FreeBSD 6.1-RELEASE (SMP-turbo)'
        String lines =
            "Filesystem  1K-blocks      Used    Avail Capacity  Mounted on\n" +
            "/dev/xxxxxx    128990    102902    15770    87%    /";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        assertEquals(15770L, fsu.freeSpaceUnix("/", false, false));
    }

    //-----------------------------------------------------------------------
    public void testGetFreeSpaceUnix_String_NormalResponseKbLinux() throws Exception {
        // from Sourceforge 'GNU bash, version 2.05b.0(1)-release (i386-redhat-linux-gnu)'
        // df, df -k and df -kP are all identical
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "/dev/xxx                497944    308528    189416  62% /";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        assertEquals(189416L, fsu.freeSpaceUnix("/", true, false));
    }

    public void testGetFreeSpaceUnix_String_NormalResponseKbFreeBSD() throws Exception {
        // from Apache 'FreeBSD 6.1-RELEASE (SMP-turbo)'
        // df and df -k are identical, but df -kP uses 512 blocks (not relevant as not used)
        String lines =
            "Filesystem  1K-blocks      Used    Avail Capacity  Mounted on\n" +
            "/dev/xxxxxx    128990    102902    15770    87%    /";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        assertEquals(15770L, fsu.freeSpaceUnix("/", true, false));
    }

    public void testGetFreeSpaceUnix_String_NormalResponseKbSolaris() throws Exception {
        // from IO-91 - ' SunOS et 5.10 Generic_118822-25 sun4u sparc SUNW,Ultra-4'
        // non-kb response does not contain free space - see IO-91
        String lines =
            "Filesystem            kbytes    used   avail capacity  Mounted on\n" +
            "/dev/dsk/x0x0x0x0    1350955  815754  481163    63%";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        assertEquals(481163L, fsu.freeSpaceUnix("/dev/dsk/x0x0x0x0", true, false));
    }

    public void testGetFreeSpaceUnix_String_LongResponse() throws Exception {
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "xxx-yyyyyyy-zzz:/home/users/s\n" +
            "                      14428928  12956424   1472504  90% /home/users/s";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        assertEquals(1472504L, fsu.freeSpaceUnix("/home/users/s", false, false));
    }

    public void testGetFreeSpaceUnix_String_LongResponseKb() throws Exception {
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "xxx-yyyyyyy-zzz:/home/users/s\n" +
            "                      14428928  12956424   1472504  90% /home/users/s";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        assertEquals(1472504L, fsu.freeSpaceUnix("/home/users/s", true, false));
    }

    public void testGetFreeSpaceUnix_String_EmptyResponse() throws Exception {
        String lines = "";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        try {
            fsu.freeSpaceUnix("/home/users/s", false, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", false, true);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, true);
            fail();
        } catch (IOException ex) {}
    }

    public void testGetFreeSpaceUnix_String_InvalidResponse1() throws Exception {
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "                      14428928  12956424       100";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        try {
            fsu.freeSpaceUnix("/home/users/s", false, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", false, true);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, true);
            fail();
        } catch (IOException ex) {}
    }

    public void testGetFreeSpaceUnix_String_InvalidResponse2() throws Exception {
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "xxx:/home/users/s     14428928  12956424   nnnnnnn  90% /home/users/s";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        try {
            fsu.freeSpaceUnix("/home/users/s", false, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", false, true);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, true);
            fail();
        } catch (IOException ex) {}
    }

    public void testGetFreeSpaceUnix_String_InvalidResponse3() throws Exception {
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "xxx:/home/users/s     14428928  12956424        -1  90% /home/users/s";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        try {
            fsu.freeSpaceUnix("/home/users/s", false, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", false, true);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, true);
            fail();
        } catch (IOException ex) {}
    }

    public void testGetFreeSpaceUnix_String_InvalidResponse4() throws Exception {
        String lines =
            "Filesystem           1K-blocks      Used Available Use% Mounted on\n" +
            "xxx-yyyyyyy-zzz:/home/users/s";
        FileSystemUtils fsu = new MockFileSystemUtils(0, lines);
        try {
            fsu.freeSpaceUnix("/home/users/s", false, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, false);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", false, true);
            fail();
        } catch (IOException ex) {}
        try {
            fsu.freeSpaceUnix("/home/users/s", true, true);
            fail();
        } catch (IOException ex) {}
    }

    //-----------------------------------------------------------------------
    static class MockFileSystemUtils extends FileSystemUtils {
        private final int exitCode;
        private final byte[] bytes;
        private final String cmd;
        public MockFileSystemUtils(int exitCode, String lines) {
            this(exitCode, lines, null);
        }
        public MockFileSystemUtils(int exitCode, String lines, String cmd) {
            this.exitCode = exitCode;
            this.bytes = lines.getBytes();
            this.cmd = cmd;
        }
        Process openProcess(String[] params) {
            if (cmd != null) {
                assertEquals(cmd, params[params.length - 1]);
            }
            return new Process() {
                public InputStream getErrorStream() {
                    return null;
                }
                public InputStream getInputStream() {
                    return new ByteArrayInputStream(bytes);
                }
                public OutputStream getOutputStream() {
                    return null;
                }
                public int waitFor() throws InterruptedException {
                    return exitCode;
                }
                public int exitValue() {
                    return exitCode;
                }
                public void destroy() {
                }
            };
        }
    }

}