[tests] Fix bogus uses of assertThrows.

test/mjsunit/d8-os.js

 // 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
@@ skipping 55 matching lines @@
   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']);", "dir 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');", "mkdir over file1");
-    assertThrows("os.mkdirp(TEST_DIR + '/file1/foo');", "mkdir over file2");
-    assertThrows("os.mkdirp(TEST_DIR + '/file1/');", "mkdir over file3");
-    assertThrows("os.mkdirp(TEST_DIR + '/file1/foo/');", "mkdir over file4");
+    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');", "chdir dir4 I");
+    assertThrows("os.chdir(TEST_DIR + '/dir4');");
     os.rmdir(TEST_DIR + "/dir4");
-    assertThrows("os.chdir(TEST_DIR + '/dir4');", "chdir dir4 II");
+    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');", "cd dir5 I");
+    assertThrows("os.chdir(TEST_DIR + '/dir5');");
     os.rmdir(TEST_DIR + "/dir5");
-    assertThrows("os.chdir(TEST_DIR + '/dir5');", "chdir dir5 II");
+    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);", "sleep 1");
+      assertThrows("os.system('sleep', ['2000'], 20);");
 
       // Check we time out with total time.
-      assertThrows("os.system('sleep', ['2000'], -1, 20);", "sleep 2");
+      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++) {
@@ skipping 33 matching lines @@
     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]);
   }
 }