- New tests for chdir() function

diff --git a/ext/standard/tests/array/chdir_basic.phpt b/ext/standard/tests/array/chdir_basic.phpt
new file mode 100644 (file)
index 0000000..5fc0e5b
--- /dev/null
+++ b/ext/standard/tests/array/chdir_basic.phpt
@@ -0,0 +1,53 @@
+--TEST--
+Test chdir() function : basic functionality 
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Test basic functionality of chdir() with absolute and relative paths
+ */
+
+echo "*** Testing chdir() : basic functionality ***\n";
+$base_dir_path = dirname(__FILE__);
+
+$level_one_dir_name = "level_one";
+$level_one_dir_path = "$base_dir_path/$level_one_dir_name";
+
+$level_two_dir_name = "level_two";
+$level_two_dir_path = "$base_dir_path/$level_one_dir_name/$level_two_dir_name";
+
+// create directories
+mkdir($level_one_dir_path);
+mkdir($level_two_dir_path);
+
+echo "\n-- Testing chdir() with absolute path: --\n";
+chdir($base_dir_path);
+var_dump(chdir($level_one_dir_path));
+var_dump(getcwd());
+
+echo "\n-- Testing chdir() with relative paths: --\n";
+var_dump(chdir($level_two_dir_name));
+var_dump(getcwd());
+?>
+===DONE===
+--CLEAN--
+<?php
+$file_path = dirname(__FILE__);
+rmdir("$file_path/level_one/level_two");
+rmdir("$file_path/level_one");
+?>
+--EXPECTF--
+*** Testing chdir() : basic functionality ***
+
+-- Testing chdir() with absolute path: --
+bool(true)
+string(%d) "%slevel_one"
+
+-- Testing chdir() with relative paths: --
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+===DONE===

diff --git a/ext/standard/tests/array/chdir_error1.phpt b/ext/standard/tests/array/chdir_error1.phpt
new file mode 100644 (file)
index 0000000..0f57ff5
--- /dev/null
+++ b/ext/standard/tests/array/chdir_error1.phpt
@@ -0,0 +1,39 @@
+--TEST--
+Test chdir() function : error conditions - Incorrect number of arguments
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Pass incorrect number of arguments to chdir() to test behaviour
+ */
+
+echo "*** Testing chdir() : error conditions ***\n";
+
+// Zero arguments
+echo "\n-- Testing chdir() function with Zero arguments --\n";
+var_dump( chdir() );
+
+//Test chdir with one more than the expected number of arguments
+echo "\n-- Testing chdir() function with more than expected no. of arguments --\n";
+$directory = __FILE__;
+$extra_arg = 10;
+var_dump( chdir($directory, $extra_arg) );
+?>
+===DONE===
+--EXPECTF--
+*** Testing chdir() : error conditions ***
+
+-- Testing chdir() function with Zero arguments --
+
+Warning: chdir() expects exactly 1 parameter, 0 given in %s on line %d
+bool(false)
+
+-- Testing chdir() function with more than expected no. of arguments --
+
+Warning: chdir() expects exactly 1 parameter, 2 given in %s on line %d
+bool(false)
+===DONE===

diff --git a/ext/standard/tests/array/chdir_error2.phpt b/ext/standard/tests/array/chdir_error2.phpt
new file mode 100644 (file)
index 0000000..a3bbb63
--- /dev/null
+++ b/ext/standard/tests/array/chdir_error2.phpt
@@ -0,0 +1,26 @@
+--TEST--
+Test chdir() function : error conditions - Non-existent directory
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Pass a directory that does not exist as $directory to chdir() to test behaviour
+ */
+
+echo "*** Testing chdir() : error conditions ***\n";
+
+$directory = __FILE__ . '/idonotexist';
+
+var_dump(chdir($directory));
+?>
+===DONE===
+--EXPECTF--
+*** Testing chdir() : error conditions ***
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+===DONE===

diff --git a/ext/standard/tests/array/chdir_variation1.phpt b/ext/standard/tests/array/chdir_variation1.phpt
new file mode 100644 (file)
index 0000000..a7cf857
--- /dev/null
+++ b/ext/standard/tests/array/chdir_variation1.phpt
@@ -0,0 +1,235 @@
+--TEST--
+Test chdir() function : usage variations - different data type as $directory arg
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Pass different data types as $directory argument to test behaviour
+ */
+
+echo "*** Testing chdir() : usage variations ***\n";
+
+// create the temporary directory
+$file_path = dirname(__FILE__);
+$dir_path = $file_path."/chdir_basic";
+@mkdir($dir_path);
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+// get a class
+class classA {
+       var $dir_path;
+       
+       function __construct($dir) {
+               $this->dir_path = $dir;
+       }
+       
+       public function __toString() {
+               return "$this->dir_path";
+       }
+}
+
+// heredoc string
+$heredoc = <<<EOT
+$dir_path
+EOT;
+
+// get a resource variable
+$fp = fopen(__FILE__, "r");
+
+// unexpected values to be passed to $directory argument
+$inputs = array(
+
+       // int data
+/*1*/  0,
+       1,
+       12345,
+       -2345,
+
+       // float data
+/*5*/  10.5,
+       -10.5,
+       12.3456789000e10,
+       12.3456789000E-10,
+       .5,
+
+       // null data
+/*10*/ NULL,
+       null,
+
+       // boolean data
+/*12*/ true,
+       false,
+       TRUE,
+       FALSE,
+       
+       // empty data
+/*16*/ "",
+       '',
+       array(),
+
+       // string data
+/*19*/ "$dir_path",
+       'string',
+       $heredoc,
+       
+       // object data
+/*22*/ new classA($dir_path),
+
+       // undefined data
+/*23*/ @$undefined_var,
+
+       // unset data
+/*24*/ @$unset_var,
+
+       // resource variable
+/*25*/ $fp
+);
+
+// loop through each element of $inputs to check the behavior of chdir()
+$iterator = 1;
+foreach($inputs as $input) {
+  echo "\n-- Iteration $iterator --\n";
+  var_dump( chdir($input) );
+  $iterator++;
+};
+
+fclose($fp);
+
+?>
+===DONE===
+--CLEAN--
+<?php
+$file_path = dirname(__FILE__);
+$dir_path = $file_path."/chdir_basic";
+
+rmdir($dir_path);
+?>
+--EXPECTF--
+*** Testing chdir() : usage variations ***
+
+-- Iteration 1 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 2 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 3 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 4 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 5 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 6 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 7 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 8 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 9 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 10 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 11 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 12 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 13 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 14 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 15 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 16 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 17 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 18 --
+
+Warning: chdir() expects parameter 1 to be string, array given in %s on line %d
+bool(false)
+
+-- Iteration 19 --
+bool(true)
+
+-- Iteration 20 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 21 --
+bool(true)
+
+-- Iteration 22 --
+bool(true)
+
+-- Iteration 23 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 24 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 25 --
+
+Warning: chdir() expects parameter 1 to be string, resource given in %s on line %d
+bool(false)
+===DONE===

diff --git a/ext/standard/tests/array/chdir_variation2.phpt b/ext/standard/tests/array/chdir_variation2.phpt
new file mode 100644 (file)
index 0000000..fa70f9e
--- /dev/null
+++ b/ext/standard/tests/array/chdir_variation2.phpt
@@ -0,0 +1,104 @@
+--TEST--
+Test chdir() function : usage variations - relative paths
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Test chdir() with variations of relative paths
+ */
+
+echo "*** Testing chdir() : usage variations ***\n";
+
+$base_dir_path = dirname(__FILE__);
+
+$level_one_dir_name = "level_one";
+$level_one_dir_path = "$base_dir_path/$level_one_dir_name";
+
+$level_two_dir_name = "level_two";
+$level_two_dir_path = "$base_dir_path/$level_one_dir_name/$level_two_dir_name";
+
+// create directories
+mkdir($level_one_dir_path);
+mkdir($level_two_dir_path);
+
+echo "\n-- \$directory = './level_one': --\n";
+var_dump(chdir($base_dir_path));
+var_dump(chdir("./$level_one_dir_name"));
+var_dump(getcwd());
+
+echo "\n-- \$directory = 'level_one/level_two': --\n";
+var_dump(chdir($base_dir_path));
+var_dump(chdir("$level_one_dir_name/$level_two_dir_name"));
+var_dump(getcwd());
+
+echo "\n-- \$directory = '..': --\n";
+var_dump(chdir('..'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = 'level_two', '.': --\n";
+var_dump(chdir($level_two_dir_path));
+var_dump(chdir('.'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = '../': --\n";
+var_dump(chdir('../'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = './': --\n";
+var_dump(chdir($level_two_dir_path));
+var_dump(chdir('./'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = '../../'level_one': --\n";
+var_dump(chdir($level_two_dir_path));
+var_dump(chdir("../../$level_one_dir_name"));
+var_dump(getcwd());
+
+?>
+===DONE===
+--CLEAN--
+<?php
+$file_path = dirname(__FILE__);
+rmdir("$file_path/level_one/level_two");
+rmdir("$file_path/level_one");
+?>
+--EXPECTF--
+*** Testing chdir() : usage variations ***
+
+-- $directory = './level_one': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one"
+
+-- $directory = 'level_one/level_two': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+
+-- $directory = '..': --
+bool(true)
+string(%d) "%slevel_one"
+
+-- $directory = 'level_two', '.': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+
+-- $directory = '../': --
+bool(true)
+string(%d) "%slevel_one"
+
+-- $directory = './': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+
+-- $directory = '../../'level_one': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one"
+===DONE===

diff --git a/ext/standard/tests/dir/chdir_basic.phpt b/ext/standard/tests/dir/chdir_basic.phpt
new file mode 100644 (file)
index 0000000..5fc0e5b
--- /dev/null
+++ b/ext/standard/tests/dir/chdir_basic.phpt
@@ -0,0 +1,53 @@
+--TEST--
+Test chdir() function : basic functionality 
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Test basic functionality of chdir() with absolute and relative paths
+ */
+
+echo "*** Testing chdir() : basic functionality ***\n";
+$base_dir_path = dirname(__FILE__);
+
+$level_one_dir_name = "level_one";
+$level_one_dir_path = "$base_dir_path/$level_one_dir_name";
+
+$level_two_dir_name = "level_two";
+$level_two_dir_path = "$base_dir_path/$level_one_dir_name/$level_two_dir_name";
+
+// create directories
+mkdir($level_one_dir_path);
+mkdir($level_two_dir_path);
+
+echo "\n-- Testing chdir() with absolute path: --\n";
+chdir($base_dir_path);
+var_dump(chdir($level_one_dir_path));
+var_dump(getcwd());
+
+echo "\n-- Testing chdir() with relative paths: --\n";
+var_dump(chdir($level_two_dir_name));
+var_dump(getcwd());
+?>
+===DONE===
+--CLEAN--
+<?php
+$file_path = dirname(__FILE__);
+rmdir("$file_path/level_one/level_two");
+rmdir("$file_path/level_one");
+?>
+--EXPECTF--
+*** Testing chdir() : basic functionality ***
+
+-- Testing chdir() with absolute path: --
+bool(true)
+string(%d) "%slevel_one"
+
+-- Testing chdir() with relative paths: --
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+===DONE===

diff --git a/ext/standard/tests/dir/chdir_error1.phpt b/ext/standard/tests/dir/chdir_error1.phpt
new file mode 100644 (file)
index 0000000..0f57ff5
--- /dev/null
+++ b/ext/standard/tests/dir/chdir_error1.phpt
@@ -0,0 +1,39 @@
+--TEST--
+Test chdir() function : error conditions - Incorrect number of arguments
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Pass incorrect number of arguments to chdir() to test behaviour
+ */
+
+echo "*** Testing chdir() : error conditions ***\n";
+
+// Zero arguments
+echo "\n-- Testing chdir() function with Zero arguments --\n";
+var_dump( chdir() );
+
+//Test chdir with one more than the expected number of arguments
+echo "\n-- Testing chdir() function with more than expected no. of arguments --\n";
+$directory = __FILE__;
+$extra_arg = 10;
+var_dump( chdir($directory, $extra_arg) );
+?>
+===DONE===
+--EXPECTF--
+*** Testing chdir() : error conditions ***
+
+-- Testing chdir() function with Zero arguments --
+
+Warning: chdir() expects exactly 1 parameter, 0 given in %s on line %d
+bool(false)
+
+-- Testing chdir() function with more than expected no. of arguments --
+
+Warning: chdir() expects exactly 1 parameter, 2 given in %s on line %d
+bool(false)
+===DONE===

diff --git a/ext/standard/tests/dir/chdir_error2.phpt b/ext/standard/tests/dir/chdir_error2.phpt
new file mode 100644 (file)
index 0000000..a3bbb63
--- /dev/null
+++ b/ext/standard/tests/dir/chdir_error2.phpt
@@ -0,0 +1,26 @@
+--TEST--
+Test chdir() function : error conditions - Non-existent directory
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Pass a directory that does not exist as $directory to chdir() to test behaviour
+ */
+
+echo "*** Testing chdir() : error conditions ***\n";
+
+$directory = __FILE__ . '/idonotexist';
+
+var_dump(chdir($directory));
+?>
+===DONE===
+--EXPECTF--
+*** Testing chdir() : error conditions ***
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+===DONE===

diff --git a/ext/standard/tests/dir/chdir_variation1.phpt b/ext/standard/tests/dir/chdir_variation1.phpt
new file mode 100644 (file)
index 0000000..a7cf857
--- /dev/null
+++ b/ext/standard/tests/dir/chdir_variation1.phpt
@@ -0,0 +1,235 @@
+--TEST--
+Test chdir() function : usage variations - different data type as $directory arg
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Pass different data types as $directory argument to test behaviour
+ */
+
+echo "*** Testing chdir() : usage variations ***\n";
+
+// create the temporary directory
+$file_path = dirname(__FILE__);
+$dir_path = $file_path."/chdir_basic";
+@mkdir($dir_path);
+
+//get an unset variable
+$unset_var = 10;
+unset ($unset_var);
+
+// get a class
+class classA {
+       var $dir_path;
+       
+       function __construct($dir) {
+               $this->dir_path = $dir;
+       }
+       
+       public function __toString() {
+               return "$this->dir_path";
+       }
+}
+
+// heredoc string
+$heredoc = <<<EOT
+$dir_path
+EOT;
+
+// get a resource variable
+$fp = fopen(__FILE__, "r");
+
+// unexpected values to be passed to $directory argument
+$inputs = array(
+
+       // int data
+/*1*/  0,
+       1,
+       12345,
+       -2345,
+
+       // float data
+/*5*/  10.5,
+       -10.5,
+       12.3456789000e10,
+       12.3456789000E-10,
+       .5,
+
+       // null data
+/*10*/ NULL,
+       null,
+
+       // boolean data
+/*12*/ true,
+       false,
+       TRUE,
+       FALSE,
+       
+       // empty data
+/*16*/ "",
+       '',
+       array(),
+
+       // string data
+/*19*/ "$dir_path",
+       'string',
+       $heredoc,
+       
+       // object data
+/*22*/ new classA($dir_path),
+
+       // undefined data
+/*23*/ @$undefined_var,
+
+       // unset data
+/*24*/ @$unset_var,
+
+       // resource variable
+/*25*/ $fp
+);
+
+// loop through each element of $inputs to check the behavior of chdir()
+$iterator = 1;
+foreach($inputs as $input) {
+  echo "\n-- Iteration $iterator --\n";
+  var_dump( chdir($input) );
+  $iterator++;
+};
+
+fclose($fp);
+
+?>
+===DONE===
+--CLEAN--
+<?php
+$file_path = dirname(__FILE__);
+$dir_path = $file_path."/chdir_basic";
+
+rmdir($dir_path);
+?>
+--EXPECTF--
+*** Testing chdir() : usage variations ***
+
+-- Iteration 1 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 2 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 3 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 4 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 5 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 6 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 7 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 8 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 9 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 10 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 11 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 12 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 13 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 14 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 15 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 16 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 17 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 18 --
+
+Warning: chdir() expects parameter 1 to be string, array given in %s on line %d
+bool(false)
+
+-- Iteration 19 --
+bool(true)
+
+-- Iteration 20 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 21 --
+bool(true)
+
+-- Iteration 22 --
+bool(true)
+
+-- Iteration 23 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 24 --
+
+Warning: chdir(): %s (errno %d) in %s on line %d
+bool(false)
+
+-- Iteration 25 --
+
+Warning: chdir() expects parameter 1 to be string, resource given in %s on line %d
+bool(false)
+===DONE===

diff --git a/ext/standard/tests/dir/chdir_variation2.phpt b/ext/standard/tests/dir/chdir_variation2.phpt
new file mode 100644 (file)
index 0000000..fa70f9e
--- /dev/null
+++ b/ext/standard/tests/dir/chdir_variation2.phpt
@@ -0,0 +1,104 @@
+--TEST--
+Test chdir() function : usage variations - relative paths
+--FILE--
+<?php
+/* Prototype  : bool chdir(string $directory)
+ * Description: Change the current directory 
+ * Source code: ext/standard/dir.c
+ */
+
+/*
+ * Test chdir() with variations of relative paths
+ */
+
+echo "*** Testing chdir() : usage variations ***\n";
+
+$base_dir_path = dirname(__FILE__);
+
+$level_one_dir_name = "level_one";
+$level_one_dir_path = "$base_dir_path/$level_one_dir_name";
+
+$level_two_dir_name = "level_two";
+$level_two_dir_path = "$base_dir_path/$level_one_dir_name/$level_two_dir_name";
+
+// create directories
+mkdir($level_one_dir_path);
+mkdir($level_two_dir_path);
+
+echo "\n-- \$directory = './level_one': --\n";
+var_dump(chdir($base_dir_path));
+var_dump(chdir("./$level_one_dir_name"));
+var_dump(getcwd());
+
+echo "\n-- \$directory = 'level_one/level_two': --\n";
+var_dump(chdir($base_dir_path));
+var_dump(chdir("$level_one_dir_name/$level_two_dir_name"));
+var_dump(getcwd());
+
+echo "\n-- \$directory = '..': --\n";
+var_dump(chdir('..'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = 'level_two', '.': --\n";
+var_dump(chdir($level_two_dir_path));
+var_dump(chdir('.'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = '../': --\n";
+var_dump(chdir('../'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = './': --\n";
+var_dump(chdir($level_two_dir_path));
+var_dump(chdir('./'));
+var_dump(getcwd());
+
+echo "\n-- \$directory = '../../'level_one': --\n";
+var_dump(chdir($level_two_dir_path));
+var_dump(chdir("../../$level_one_dir_name"));
+var_dump(getcwd());
+
+?>
+===DONE===
+--CLEAN--
+<?php
+$file_path = dirname(__FILE__);
+rmdir("$file_path/level_one/level_two");
+rmdir("$file_path/level_one");
+?>
+--EXPECTF--
+*** Testing chdir() : usage variations ***
+
+-- $directory = './level_one': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one"
+
+-- $directory = 'level_one/level_two': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+
+-- $directory = '..': --
+bool(true)
+string(%d) "%slevel_one"
+
+-- $directory = 'level_two', '.': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+
+-- $directory = '../': --
+bool(true)
+string(%d) "%slevel_one"
+
+-- $directory = './': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one%elevel_two"
+
+-- $directory = '../../'level_one': --
+bool(true)
+bool(true)
+string(%d) "%slevel_one"
+===DONE===