New testcases for filesystem handling function : unlink()

ext/standard/tests/file/unlink_basic.phpt

@@ -0,0 +1,43 @@
+--TEST--
+Testing unlink() function : basic functionality
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+$file_path = dirname(__FILE__);
+
+echo "*** Testing unlink() on a file ***\n";
+$filename = "$file_path/unlink_basic.tmp";  // temp file name used here
+$fp = fopen($filename, "w");  // create file
+fwrite($fp, "Hello World");
+fclose($fp);
+
+// delete file
+var_dump( unlink($filename) );
+var_dump( file_exists($filename) );  // confirm file doesnt exist
+
+echo "\n*** Testing unlink() : checking second argument ***\n";
+// creating a context
+$context = stream_context_create();
+// temp file name used here
+$filename = "$file_path/unlink_basic.tmp";
+$fp = fopen($filename, "w");  // create file
+fclose($fp);
+
+// delete file
+var_dump( unlink($filename, $context) );  // using $context in second argument
+var_dump( file_exists($filename) );  // confirm file doesnt exist
+
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() on a file ***
+bool(true)
+bool(false)
+
+*** Testing unlink() : checking second argument ***
+bool(true)
+bool(false)
+Done

ext/standard/tests/file/unlink_error-win32.phpt

@@ -0,0 +1,111 @@
+--TEST--
+Testing unlink() function : error conditions
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) != 'WIN') {
+    die('skip.. only on Windows');
+}
+?>
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+$file_path = dirname(__FILE__);
+
+$filename = "$file_path/unlink_error.tmp";  // temp file name used here
+$fp = fopen($filename, "w");  // create file
+fclose($fp);
+
+// creating a context
+$context = stream_context_create();
+
+echo "*** Testing unlink() : error conditions ***\n";
+
+echo "-- Testing unlink() on unexpected no. of arguments --\n";
+// arg < expected
+var_dump( unlink() );
+// args > expected
+var_dump( unlink($filename, $context, true) );
+var_dump( file_exists($filename) );
+
+echo "\n-- Testing unlink() on invalid arguments --\n";
+// invalid arguments
+var_dump( unlink('') );  // $filename as empty string
+var_dump( file_exists('') );  // confirm file doesnt exist
+
+var_dump( unlink(NULL) );  // $filename as NULL
+var_dump( file_exists(NULL) );  // confirm file doesnt exist
+
+var_dump( unlink(false) );  // $filename as boolean false
+var_dump( file_exists(false) );  // confirm file doesnt exist
+
+var_dump( unlink($filename, '') );  // $context as empty string
+var_dump( unlink($filename, false) );  // $context as boolean false
+var_dump( unlink($filename, NULL) );  // $context as NULL
+
+
+echo "\n-- Testing unlink() on non-existent file --\n";
+var_dump( unlink(dirname(__FILE__)."/non_existent_file.tmp") );
+
+echo "\n-- Testing unlink() on directory --\n";
+// temp directory used here
+$dirname = "$file_path/unlink_error";
+// create temp dir
+mkdir($dirname);
+// unlinking directory
+var_dump( unlink($dirname) );  // expected: false as unlink() does not work on dir
+
+echo "Done\n";
+
+?>
+--CLEAN--
+<?php
+unlink(dirname(__FILE__)."/unlink_error.tmp");
+rmdir(dirname(__FILE__)."/unlink_error");
+?>
+--EXPECTF--
+*** Testing unlink() : error conditions ***
+-- Testing unlink() on unexpected no. of arguments --
+
+Warning: unlink() expects at least 1 parameter, 0 given in %s on line %d
+bool(false)
+
+Warning: unlink() expects at most 2 parameters, 3 given in %s on line %d
+bool(false)
+bool(true)
+
+-- Testing unlink() on invalid arguments --
+
+Warning: unlink(): No such file or directory in %s on line %d
+bool(false)
+bool(false)
+
+Warning: unlink(): No such file or directory in %s on line %d
+bool(false)
+bool(false)
+
+Warning: unlink(): No such file or directory in %s on line %d
+bool(false)
+bool(false)
+
+Warning: unlink() expects parameter 2 to be resource, string given in %s on line %d
+bool(false)
+
+Warning: unlink() expects parameter 2 to be resource, boolean given in %s on line %d
+bool(false)
+
+Warning: unlink() expects parameter 2 to be resource, null given in %s on line %d
+bool(false)
+
+-- Testing unlink() on non-existent file --
+
+Warning: unlink(%s/non_existent_file.tmp): No such file or directory in %s on line %d
+bool(false)
+
+-- Testing unlink() on directory --
+
+Warning: unlink(%s/unlink_error): Permission denied in %s on line %d
+bool(false)
+Done

ext/standard/tests/file/unlink_error.phpt

@@ -0,0 +1,108 @@
+--TEST--
+Testing unlink() function : error conditions
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    die('skip.. only on Linux');
+}
+?>
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+$file_path = dirname(__FILE__);
+
+$filename = "$file_path/unlink_error.tmp";  // temp file name used here
+$fp = fopen($filename, "w");  // create file
+fclose($fp);
+
+// creating a context
+$context = stream_context_create();
+
+echo "*** Testing unlink() : error conditions ***\n";
+
+echo "-- Testing unlink() on unexpected no. of arguments --\n";
+// arg < expected
+var_dump( unlink() );
+// args > expected
+var_dump( unlink($filename, $context, true) );
+var_dump( file_exists($filename) ); 
+
+echo "\n-- Testing unlink() on invalid arguments --\n";
+// invalid arguments
+var_dump( unlink('') );  // $filename as empty string
+var_dump( file_exists('') );  // confirm file doesnt exist
+
+var_dump( unlink(NULL) );  // $filename as NULL
+var_dump( file_exists(NULL) );  // confirm file doesnt exist
+
+var_dump( unlink(false) );  // $filename as boolean false
+var_dump( file_exists(false) );  // confirm file doesnt exist
+
+var_dump( unlink($filename, '') );  // $context as empty string
+var_dump( unlink($filename, false) );  // $context as boolean false
+var_dump( unlink($filename, NULL) );  // $context as NULL
+
+
+echo "\n-- Testing unlink() on non-existent file --\n";
+var_dump( unlink(dirname(__FILE__)."/non_existent_file.tmp") );
+
+echo "\n-- Testing unlink() on directory --\n";
+// temp directory used here
+$dirname = "$file_path/unlink_error";
+// create temp dir
+mkdir($dirname);
+// unlinking directory
+var_dump( unlink($dirname) );  // expected: false as unlink() does not work on dir
+rmdir($dirname);
+
+// delete temp file
+unlink($filename);
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() : error conditions ***
+-- Testing unlink() on unexpected no. of arguments --
+
+Warning: unlink() expects at least 1 parameter, 0 given in %s on line %d
+bool(false)
+
+Warning: unlink() expects at most 2 parameters, 3 given in %s on line %d
+bool(false)
+bool(true)
+
+-- Testing unlink() on invalid arguments --
+
+Warning: unlink(): %s in %s on line %d
+bool(false)
+bool(false)
+
+Warning: unlink(): %s in %s on line %d
+bool(false)
+bool(false)
+
+Warning: unlink(): %s in %s on line %d
+bool(false)
+bool(false)
+
+Warning: unlink() expects parameter 2 to be resource, string given in %s on line %d
+bool(false)
+
+Warning: unlink() expects parameter 2 to be resource, boolean given in %s on line %d
+bool(false)
+
+Warning: unlink() expects parameter 2 to be resource, null given in %s on line %d
+bool(false)
+
+-- Testing unlink() on non-existent file --
+
+Warning: unlink(%s/non_existent_file.tmp): %s in %s on line %d
+bool(false)
+
+-- Testing unlink() on directory --
+
+Warning: unlink(%s/unlink_error): %s in %s on line %d
+bool(false)
+Done

ext/standard/tests/file/unlink_variation1-win32.phpt

@@ -0,0 +1,85 @@
+--TEST--
+Test unlink() function : usage variations - unlinking file in a directory
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) != 'WIN') {
+    die('skip only on Windows');
+}
+?>
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+/* Delete file having default permission but its dir having readonly permission
+   Delete file having readonly permission but dir having default permission
+*/
+
+
+$file_path = dirname(__FILE__);
+
+// temp dir name used here
+$dirname = "$file_path/unlink_variation1";
+// temp filename used here
+$filename = "$dirname/unlink_variation1-win32.tmp";
+
+echo "*** Testing unlink() on file inside a directory ***\n";
+// create temp dir
+mkdir($dirname);
+// create temp file inside $dirname
+$fp = fopen($filename, "w");
+fclose($fp);
+
+echo "-- Unlink file having default permission and its dir having read only permission --\n";
+// remove write permission of $dirname
+// on windows dir permission is not respected
+var_dump( chmod($dirname, 0444) );
+// now try deleting $filename
+var_dump( unlink($filename) );  // expected: true
+var_dump( file_exists($filename) );  // confirm file is deleted
+
+// remove the dir
+var_dump( chmod($dirname, 0777) );
+rmdir($dirname);
+
+echo "\n-- Unlinking file without write permission, its dir having default permission --\n";
+// create the temp dir
+mkdir($dirname);
+
+// create the temp file
+$fp = fopen($filename, "w");
+fclose($fp);
+
+// remove write permission from file
+var_dump( chmod($filename, 0444) );
+
+// now try deleting temp file inside $dirname
+var_dump( unlink($filename) );  // expected: false
+
+// reassign write permission to temp file
+chmod($filename, 0777);
+// delete temp file
+var_dump( unlink($filename) );
+var_dump( file_exists($filename) );  // confirm file is deleted
+// remove temp dir
+rmdir($dirname);
+
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() on file inside a directory ***
+-- Unlink file having default permission and its dir having read only permission --
+bool(true)
+bool(true)
+bool(false)
+bool(true)
+
+-- Unlinking file without write permission, its dir having default permission --
+bool(true)
+
+Warning: unlink(%s/unlink_variation1/unlink_variation1-win32.tmp): Permission denied in %s on line %d
+bool(false)
+bool(true)
+bool(false)
+Done

ext/standard/tests/file/unlink_variation1.phpt

@@ -0,0 +1,82 @@
+--TEST--
+Test unlink() function : usage variations - unlinking file in a directory
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    die('skip only on Linux');
+}
+?>
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+/* Delete file having default permission but its dir having readonly permission
+   Delete file having readonly permission but dir having default permission
+*/
+
+
+$file_path = dirname(__FILE__);
+
+// temp dir name used here
+$dirname = "$file_path/unlink_variation1";
+// temp filename used here
+$filename = "$dirname/unlink_variation1.tmp";
+
+echo "*** Testing unlink() on file inside a directory ***\n";
+// create temp dir
+mkdir($dirname);
+// create temp file inside $dirname
+$fp = fopen($filename, "w");
+fclose($fp);
+
+echo "-- Unlink file having default permission and its dir having read only permission --\n";
+// remove write permission of $dirname
+var_dump( chmod($dirname, 0444) );
+// now try deleting $filename
+var_dump( unlink($filename) );  // expected false
+var_dump( file_exists($filename) );  // confirm file is deleted
+
+// remove the dir
+var_dump( chmod($dirname, 0777) );
+var_dump( unlink($filename) );  // expected true
+var_dump( rmdir($dirname) );
+
+echo "\n-- Unlinking file without write permission, its dir having default permission --\n";
+// create the temp dir
+var_dump( mkdir($dirname) );
+// create the temp file
+$fp = fopen($filename, "w");
+fclose($fp);
+
+// remove write permission from file
+var_dump( chmod($filename, 0444) );
+// now try deleting temp file inside $dirname
+var_dump( unlink($filename) );  // expected: true
+var_dump( file_exists($filename) );  // expected: false
+
+// remove temp dir
+var_dump( rmdir($dirname) );
+
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() on file inside a directory ***
+-- Unlink file having default permission and its dir having read only permission --
+bool(true)
+
+Warning: unlink(%s): %s in %s on line %d
+bool(false)
+bool(false)
+bool(true)
+bool(true)
+bool(true)
+
+-- Unlinking file without write permission, its dir having default permission --
+bool(true)
+bool(true)
+bool(true)
+bool(false)
+bool(true)
+Done

ext/standard/tests/file/unlink_variation2-win32.phpt

@@ -0,0 +1,43 @@
+--TEST--
+Test unlink() function : usage variations - unlink file in use
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) != 'WIN') {
+    die('skip only on Windows');
+}
+?>
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+/* Try to unlink file when file handle is still in use */
+
+$file_path = dirname(__FILE__);
+
+echo "*** Testing unlink() on a file when file handle is open ***\n";
+// temp file name used here
+$filename = "$file_path/unlink_variation2.tmp";
+
+// create file
+$fp = fopen($filename, "w");
+// try unlink() on $filename
+var_dump( unlink($filename) );  // expected: false as file handle is still open
+// now close file handle
+fclose($fp);
+
+// now unlink file
+var_dump( unlink($filename) );  // expected: true
+var_dump( file_exists($filename) );  // confirm file is deleted
+
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() on a file when file handle is open ***
+
+Warning: unlink(%s): %s in %s on line %d
+bool(false)
+bool(true)
+bool(false)
+Done

ext/standard/tests/file/unlink_variation2.phpt

@@ -0,0 +1,37 @@
+--TEST--
+Test unlink() function : usage variations - unlink file in use
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    die('skip only on Linux');
+}
+?>
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+/* Try to unlink file when file handle is still in use */
+
+$file_path = dirname(__FILE__);
+
+echo "*** Testing unlink() on a file which is in use ***\n";
+// temp file name used here
+$filename = "$file_path/unlink_variation2.tmp";
+
+// create file
+$fp = fopen($filename, "w");
+// try unlink() on $filename
+var_dump( unlink($filename) );  // expected: true on linux
+var_dump( file_exists($filename) );  // confirm file is deleted
+// now close file handle
+fclose($fp);
+
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() on a file which is in use ***
+bool(true)
+bool(false)
+Done

ext/standard/tests/file/unlink_variation3.phpt

@@ -0,0 +1,60 @@
+--TEST--
+Test unlink() function : usage variations - unlink links
+--SKIPIF--
+<?php
+if (substr(PHP_OS, 0, 3) == 'WIN') {
+    die('skip only on Linux');
+}
+?>
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+/* Delete link files - soft and hard links */
+
+$file_path = dirname(__FILE__);
+// temp file used
+$filename = "$file_path/unlink_variation3.tmp";
+
+echo "*** Testing unlink() on soft and hard links ***\n";
+// create temp file
+$fp = fopen($filename, "w");
+fclose($fp);
+// link name used here
+$linkname = "$file_path/unlink_variation3_link.tmp";
+
+echo "-- Testing unlink() on soft link --\n";
+// create soft link
+var_dump( symlink($filename, $linkname) );  // expected: true
+// unlink soft link
+var_dump( unlink($linkname) );  // expected: true
+var_dump( file_exists($linkname) );  // confirm link is deleted
+
+echo "-- Testing unlink() on hard link --\n";
+// create hard link
+var_dump( link($filename, $linkname) );  // expected: true
+// delete hard link
+var_dump( unlink($linkname) );  // expected: true
+var_dump( file_exists($linkname) );  // confirm link is deleted
+
+// delete temp file
+var_dump( unlink($filename) );
+var_dump( file_exists($filename) );  // confirm file is deleted
+
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() on soft and hard links ***
+-- Testing unlink() on soft link --
+bool(true)
+bool(true)
+bool(false)
+-- Testing unlink() on hard link --
+bool(true)
+bool(true)
+bool(false)
+bool(true)
+bool(false)
+Done

ext/standard/tests/file/unlink_variation4.phpt

@@ -0,0 +1,37 @@
+--TEST--
+Test unlink() function : usage variations - unlink deleted file
+--FILE--
+<?php
+/* Prototype : bool unlink ( string $filename [, resource $context] );
+   Description : Deletes filename
+*/
+
+$file_path = dirname(__FILE__);
+
+// temp file used
+$filename = "$file_path/unlink_variation4.tmp";
+
+/* Try deleting a file which is already deleted */
+ 
+echo "*** Testing unlink() on deleted file ***\n";
+// create temp file
+$fp = fopen($filename, "w");
+fclose($fp);
+
+// delete temp file
+var_dump( unlink($filename) );  // expected: true
+var_dump( file_exists($filename) );  // confirm file deleted
+
+// delete deleted file
+var_dump( unlink($filename) );  // expected: false
+
+echo "Done\n";
+?>
+--EXPECTF--
+*** Testing unlink() on deleted file ***
+bool(true)
+bool(false)
+
+Warning: unlink(%s/unlink_variation4.tmp): %s in %s on line %d
+bool(false)
+Done