New trim() tests. Tested on Windows, Linux and Linux 64 bit

4 files changed, 382 insertions, 0 deletions

diff --git a/ext/standard/tests/strings/trim_basic.phpt b/ext/standard/tests/strings/trim_basic.phpt
new file mode 100644
index 0000000000..501b477420
--- /dev/null
+++ b/ext/standard/tests/strings/trim_basic.phpt
@@ -0,0 +1,45 @@
+--TEST--
+Test trim() function : basic functionality 
+--FILE--
+<?php
+
+/* Prototype  : string trim  ( string $str  [, string $charlist  ] )
+ * Description: Strip whitespace (or other characters) from the beginning and end of a string.
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing trim() : basic functionality ***\n";
+
+$text  = "  \t\r\n\0\x0B  ---These are a few words---  \t\r\n\0\x0B  ";
+$hello  = "!===Hello World===!";
+$binary = "\x0A\x0DExample string\x0A\x0D";
+
+echo "\n-- Trim string with all white space characters --\n";
+var_dump(trim($text));
+
+echo "\n-- Trim non-whitespace from a string --\n"; 
+var_dump(trim($hello, "=!"));
+
+echo "\n-- Trim some non-white space characters from a string --\n"; 
+var_dump(trim($hello, "Hdle"));
+
+echo "\n-- Trim the ASCII control characters at the beginning of a string --\n";
+var_dump(trim($binary, "\x00..\x1F"));
+
+?>
+===DONE===
+--EXPECT--
+*** Testing trim() : basic functionality ***
+
+-- Trim string with all white space characters --
+string(27) "---These are a few words---"
+
+-- Trim non-whitespace from a string --
+string(11) "Hello World"
+
+-- Trim some non-white space characters from a string --
+string(19) "!===Hello World===!"
+
+-- Trim the ASCII control characters at the beginning of a string --
+string(14) "Example string"
+===DONE===
diff --git a/ext/standard/tests/strings/trim_error.phpt b/ext/standard/tests/strings/trim_error.phpt
new file mode 100644
index 0000000000..092deb6dca
--- /dev/null
+++ b/ext/standard/tests/strings/trim_error.phpt
@@ -0,0 +1,61 @@
+--TEST--
+Test trim() function : error conditions 
+--FILE--
+<?php
+
+/* Prototype  : string trim  ( string $str  [, string $charlist  ] )
+ * Description: Strip whitespace (or other characters) from the begining and end of a string.
+ * Source code: ext/standard/string.c
+*/
+
+
+echo "*** Testing trim() : error conditions ***\n";
+
+echo "\n-- Testing trim() function with no arguments --\n";
+var_dump( trim() );
+
+echo "\n-- Testing trim() function with more than expected no. of arguments --\n";
+$extra_arg = 10;
+var_dump( trim("Hello World",  "Heo", $extra_arg) );
+
+
+$hello = "  Hello World\n";
+echo "\n-- Test trim function with various invalid charlists --\n";
+var_dump(trim($hello, "..a"));
+var_dump(trim($hello, "a.."));
+var_dump(trim($hello, "z..a"));
+var_dump(trim($hello, "a..b..c"));
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing trim() : error conditions ***
+
+-- Testing trim() function with no arguments --
+
+Warning: trim() expects at least 1 parameter, 0 given in %s on line %d
+NULL
+
+-- Testing trim() function with more than expected no. of arguments --
+
+Warning: trim() expects at most 2 parameters, 3 given in %s on line %d
+NULL
+
+-- Test trim function with various invalid charlists --
+
+Warning: trim(): Invalid '..'-range, no character to the left of '..' in %s on line %d
+string(14) "  Hello World
+"
+
+Warning: trim(): Invalid '..'-range, no character to the right of '..' in %s on line %d
+string(14) "  Hello World
+"
+
+Warning: trim(): Invalid '..'-range, '..'-range needs to be incrementing in %s on line %d
+string(14) "  Hello World
+"
+
+Warning: trim(): Invalid '..'-range in %s on line %d
+string(14) "  Hello World
+"
+===DONE===
\ No newline at end of file
diff --git a/ext/standard/tests/strings/trim_variation1.phpt b/ext/standard/tests/strings/trim_variation1.phpt
new file mode 100644
index 0000000000..625ec31824
--- /dev/null
+++ b/ext/standard/tests/strings/trim_variation1.phpt
@@ -0,0 +1,138 @@
+--TEST--
+Test trim() function : usage variations - test values for $str argument
+--FILE--
+<?php
+
+/* Prototype  : string trim  ( string $str  [, string $charlist  ] )
+ * Description: Strip whitespace (or other characters) from the begining and end of a string.
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing trim() function: with unexpected inputs for 'str' argument ***\n";
+
+//get an unset variable
+$unset_var = '  !--string_val--!  ';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "  !---sample object---!  ";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $input
+$inputs =  array (
+
+		  // integer values
+/*1*/	  0,
+		  1,
+		  255,
+		  256,
+		  2147483647,
+		  -2147483648,
+		
+		  // float values
+/*7*/	  10.5,
+		  -20.5,
+		  10.1234567e10,
+		
+		  // array values
+/*10*/	  array(),
+		  array(0),
+		  array(1, 2),
+		
+		  // boolean values
+/*13*/	  true,
+		  false,
+		  TRUE,
+		  FALSE,
+		
+		  // null values
+/*17*/	  NULL,
+		  null,
+		
+		  // objects
+/*19*/	  new sample(),
+		
+		  // resource
+/*20*/	  $file_handle,
+		
+		  // undefined variable
+/*21*/	  @$undefined_var,
+		
+		  // unset variable
+/*22*/	  @$unset_var
+);
+
+// loop through with each element of the $inputs array to test trim() function
+$count = 1;
+foreach($inputs as $input) {
+  echo "-- Iteration $count --\n";
+  // strip white space and any "minus" signs
+  var_dump( trim($input, " !-") );
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing trim() function: with unexpected inputs for 'str' argument ***
+-- Iteration 1 --
+string(1) "0"
+-- Iteration 2 --
+string(1) "1"
+-- Iteration 3 --
+string(3) "255"
+-- Iteration 4 --
+string(3) "256"
+-- Iteration 5 --
+string(10) "2147483647"
+-- Iteration 6 --
+string(10) "2147483648"
+-- Iteration 7 --
+string(4) "10.5"
+-- Iteration 8 --
+string(4) "20.5"
+-- Iteration 9 --
+string(12) "101234567000"
+-- Iteration 10 --
+
+Warning: trim() expects parameter 1 to be string, array given in %s on line %d
+NULL
+-- Iteration 11 --
+
+Warning: trim() expects parameter 1 to be string, array given in %s on line %d
+NULL
+-- Iteration 12 --
+
+Warning: trim() expects parameter 1 to be string, array given in %s on line %d
+NULL
+-- Iteration 13 --
+string(1) "1"
+-- Iteration 14 --
+string(0) ""
+-- Iteration 15 --
+string(1) "1"
+-- Iteration 16 --
+string(0) ""
+-- Iteration 17 --
+string(0) ""
+-- Iteration 18 --
+string(0) ""
+-- Iteration 19 --
+string(13) "sample object"
+-- Iteration 20 --
+
+Warning: trim() expects parameter 1 to be string, resource given in %s on line %d
+NULL
+-- Iteration 21 --
+string(0) ""
+-- Iteration 22 --
+string(0) ""
+===DONE===
\ No newline at end of file
diff --git a/ext/standard/tests/strings/trim_variation2.phpt b/ext/standard/tests/strings/trim_variation2.phpt
new file mode 100644
index 0000000000..009d61b2df
--- /dev/null
+++ b/ext/standard/tests/strings/trim_variation2.phpt
@@ -0,0 +1,138 @@
+--TEST--
+Test trim() function : usage variations - test values for $charlist argument
+--FILE--
+<?php
+
+/* Prototype  : string trim  ( string $str  [, string $charlist  ] )
+ * Description: Strip whitespace (or other characters) from the begining and end of a string.
+ * Source code: ext/standard/string.c
+*/
+
+echo "*** Testing trim() function: with unexpected inputs for 'charlist' argument ***\n";
+
+//get an unset variable
+$unset_var = '  string_val  ';
+unset($unset_var);
+
+//defining a class
+class sample  {
+  public function __toString() {
+    return "  sample object  ";
+  } 
+}
+
+//getting the resource
+$file_handle = fopen(__FILE__, "r");
+
+// array with different values for $input
+$inputs =  array (
+
+		  // integer values
+/*1*/	  0,
+		  1,
+		  255,
+		  256,
+		  2147483647,
+		  -2147483648,
+		
+		  // float values
+/*7*/	  10.5,
+		  -20.5,
+		  10.1234567e10,
+		
+		  // array values
+/*10*/	  array(),
+		  array(0),
+		  array(1, 2),
+		
+		  // boolean values
+/*13*/	  true,
+		  false,
+		  TRUE,
+		  FALSE,
+		
+		  // null values
+/*17*/	  NULL,
+		  null,
+		
+		  // objects
+/*19*/	  new sample(),
+		
+		  // resource
+/*20*/	  $file_handle,
+		
+		  // undefined variable
+/*21*/	  @$undefined_var,
+		
+		  // unset variable
+/*22*/	  @$unset_var
+);
+
+// loop through with each element of the $inputs array to test trim() function
+$count = 1;
+foreach($inputs as $charlist) {
+  echo "-- Iteration $count --\n";
+  // strip white space and any "minus" signs
+  var_dump( trim("!---Hello World---!", $charlist) );
+  $count ++;
+}
+
+fclose($file_handle);  //closing the file handle
+
+?>
+===DONE===
+--EXPECTF--
+*** Testing trim() function: with unexpected inputs for 'charlist' argument ***
+-- Iteration 1 --
+string(19) "!---Hello World---!"
+-- Iteration 2 --
+string(19) "!---Hello World---!"
+-- Iteration 3 --
+string(19) "!---Hello World---!"
+-- Iteration 4 --
+string(19) "!---Hello World---!"
+-- Iteration 5 --
+string(19) "!---Hello World---!"
+-- Iteration 6 --
+string(19) "!---Hello World---!"
+-- Iteration 7 --
+string(19) "!---Hello World---!"
+-- Iteration 8 --
+string(19) "!---Hello World---!"
+-- Iteration 9 --
+string(19) "!---Hello World---!"
+-- Iteration 10 --
+
+Warning: trim() expects parameter 2 to be string, array given in %s on line %d
+NULL
+-- Iteration 11 --
+
+Warning: trim() expects parameter 2 to be string, array given in %s on line %d
+NULL
+-- Iteration 12 --
+
+Warning: trim() expects parameter 2 to be string, array given in %s on line %d
+NULL
+-- Iteration 13 --
+string(19) "!---Hello World---!"
+-- Iteration 14 --
+string(19) "!---Hello World---!"
+-- Iteration 15 --
+string(19) "!---Hello World---!"
+-- Iteration 16 --
+string(19) "!---Hello World---!"
+-- Iteration 17 --
+string(19) "!---Hello World---!"
+-- Iteration 18 --
+string(19) "!---Hello World---!"
+-- Iteration 19 --
+string(19) "!---Hello World---!"
+-- Iteration 20 --
+
+Warning: trim() expects parameter 2 to be string, resource given in %s on line %d
+NULL
+-- Iteration 21 --
+string(19) "!---Hello World---!"
+-- Iteration 22 --
+string(19) "!---Hello World---!"
+===DONE===
\ No newline at end of file