// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Test the OS module of d8.  This test only makes sense with d8.  It
// only does non-trivial work on Unix since os.system() is not currently
// implemented on Windows, and even if it were then many of the things
// we are calling would not be available.

var TEST_DIR = "/tmp/d8-os-test-directory-" + ((Math.random() * (1<<30)) | 0);


function arg_error(str) {
  try {
    eval(str);
  } catch (e) {
    assertTrue(/rgument/.test(e), str);
  }
}

const kOsNameValues = ['linux', 'macos', 'windows', 'android', 'unknown'];
assertTrue(kOsNameValues.includes(os.name));

assertTrue(os.d8Path.length > 0);

function str_error(str) {
  var e = new Object();
  e.toString = function() { throw new Error("foo bar"); }
  try {
    eval(str);
  } catch (exception) {
    assertTrue(/tring conversion/.test(exception), str);
  }
}


if (this.os && os.system) {
  // Ensure that we have a valid working directory.
  os.chdir("/tmp");
  try {
    // Delete the dir if it is lying around from last time.
    os.system("ls", [TEST_DIR]);
    os.system("rm", ["-r", TEST_DIR]);
  } catch (e) {
  }
  os.mkdirp(TEST_DIR);
  try {
    // Check the chdir worked.
    os.system('ls', [TEST_DIR]);
    // Simple create dir.
    os.mkdirp(TEST_DIR + "/dir");
    // Create dir in dir.
    os.mkdirp(TEST_DIR + "/dir/foo");
    // Check that they are there.
    os.system('ls', [TEST_DIR + '/dir/foo']);
    // Check that we can detect when something is not there.
    assertThrows("os.system('ls', [TEST_DIR + '/dir/bar']);");
    // Check that mkdirp makes intermediate directories.
    os.mkdirp(TEST_DIR + "/dir2/foo");
    os.system("ls", [TEST_DIR + "/dir2/foo"]);
    // Check that mkdirp doesn't mind if the dir is already there.
    os.mkdirp(TEST_DIR + "/dir2/foo");
    os.mkdirp(TEST_DIR + "/dir2/foo/");
    // Check that mkdirp can cope with trailing /
    os.mkdirp(TEST_DIR + "/dir3/");
    os.system("ls", [TEST_DIR + "/dir3"]);
    // Check that we get an error if the name is taken by a file.
    os.system("sh", ["-c", "echo foo > " + TEST_DIR + "/file1"]);
    os.system("ls", [TEST_DIR + "/file1"]);
    assertThrows("os.mkdirp(TEST_DIR + '/file1');");
    assertThrows("os.mkdirp(TEST_DIR + '/file1/foo');");
    assertThrows("os.mkdirp(TEST_DIR + '/file1/');");
    assertThrows("os.mkdirp(TEST_DIR + '/file1/foo/');");
    // Create a dir we cannot read.
    os.mkdirp(TEST_DIR + "/dir4", 0);
    // This test fails if you are root since root can read any dir.
    assertThrows("os.chdir(TEST_DIR + '/dir4');");
    os.rmdir(TEST_DIR + "/dir4");
    assertThrows("os.chdir(TEST_DIR + '/dir4');");

    // Set umask.  This changes the umask for the whole process and is
    // the reason why the test cannot be run multi-threaded.
    var old_umask = os.umask(0777);
    // Create a dir we cannot read.
    os.mkdirp(TEST_DIR + "/dir5");
    // This test fails if you are root since root can read any dir.
    assertThrows("os.chdir(TEST_DIR + '/dir5');");
    os.rmdir(TEST_DIR + "/dir5");
    assertThrows("os.chdir(TEST_DIR + '/dir5');");
    os.umask(old_umask);

    os.mkdirp(TEST_DIR + "/hest/fisk/../fisk/ged");
    os.system("ls", [TEST_DIR + "/hest/fisk/ged"]);

    os.setenv("FOO", "bar");
    var environment = os.system("printenv");
    assertTrue(/FOO=bar/.test(environment));

    // Check we time out.
    var have_sleep = true;
    var have_echo = true;
    try {
      os.system("ls", ["/bin/sleep"]);
    } catch (e) {
      have_sleep = false;
    }
    try {
      os.system("ls", ["/bin/echo"]);
    } catch (e) {
      have_echo = false;
    }
    if (have_sleep) {
      assertThrows("os.system('sleep', ['2000'], 20);");

      // Check we time out with total time.
      assertThrows("os.system('sleep', ['2000'], -1, 20);");

      // Check that -1 means no timeout.
      os.system('sleep', ['1'], -1, -1);

    }

    // Check that we don't fill up the process table with zombies.
    // Disabled because it's too slow.
    if (have_echo) {
      //for (var i = 0; i < 65536; i++) {
      assertEquals("baz\n", os.system("echo", ["baz"]));
      //}
    }

    // Too few args.
    arg_error("os.umask();");
    arg_error("os.system();");
    arg_error("os.mkdirp();");
    arg_error("os.chdir();");
    arg_error("os.setenv();");
    arg_error("os.rmdir();");

    // Too many args.
    arg_error("os.setenv('FOO=bar');");
    arg_error("os.umask(0, 0);");
    arg_error("os.system('ls', [], -1, -1, -1);");
    arg_error("os.mkdirp('foo', 0, 0)");
    arg_error("os.chdir('foo', 'bar')");
    arg_error("os.rmdir('foo', 'bar');");

    // Wrong kind of args.
    arg_error("os.umask([]);");
    arg_error("os.system('ls', 'foo');");
    arg_error("os.system('ls', 123);");
    arg_error("os.system('ls', [], 'foo');");
    arg_error("os.system('ls', [], -1, 'foo');");
    arg_error("os.mkdirp('foo', 'bar');");

    // Test broken toString().
    str_error("os.system(e);");
    str_error("os.system('ls', [e]);");
    str_error("os.system('ls', ['.', e]);");
    str_error("os.system('ls', [e, '.']);");
    str_error("os.mkdirp(e);");
    str_error("os.setenv(e, 'goo');");
    str_error("os.setenv('goo', e);");
    str_error("os.chdir(e);");
    str_error("os.rmdir(e);");

  } finally {
    os.system("rm", ["-r", TEST_DIR]);
  }
}
