Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master

1 files changed, 296 insertions, 0 deletions

diff --git a/ext/standard/tests/general_functions/is_null.phpt b/ext/standard/tests/general_functions/is_null.phpt
new file mode 100644
index 0000000..b01b195
--- /dev/null
+++ b/ext/standard/tests/general_functions/is_null.phpt
@@ -0,0 +1,296 @@
+--TEST--
+Test is_null() function
+--FILE--
+<?php
+/* Prototype: bool is_null ( mixed $var );
+ * Description: Finds whether the given variable is NULL 
+ */
+
+echo "*** Testing is_null() with valid null values ***\n";
+// different valid  null vlaues 
+$unset_array = array();
+$unset_int = 10;
+$unset_float = 10.5;
+$unset_bool = true;
+$unset_object = new stdclass;
+$unset_resource = fopen(__FILE__, "r");
+// unset them to make it null.
+unset ($unset_array, $unset_int, $unset_float, $unset_bool, $unset_object, $unset_resource); 
+$null_var1 = NULL;
+$null_var2 = null;
+
+$valid_nulls = array(
+  NULL,
+  null,
+  @$null_var1,
+  @$null_var2,
+  @$unset_array,
+  @$unset_int,
+  @$unset_float,
+  @$unset_bool,
+  @$unset_object,
+  @$unset_resource,
+  @$undefined_var,
+);
+/* loop to check that is_null() recognizes different 
+   null values, expected output: bool(true) */
+$loop_counter = 1;
+foreach ($valid_nulls as $null_val ) {
+  echo "-- Iteration $loop_counter --\n"; $loop_counter++;
+  var_dump( is_null($null_val) );
+}
+
+echo "\n*** Testing is_bool() on non null values ***\n";
+
+// get a resource type variable
+$fp = fopen (__FILE__, "r");
+$dfp = opendir ( dirname(__FILE__) );
+
+// other types in a array 
+$not_null_types = array (
+/* integers */
+  0,
+  1,
+  -1,
+  -0,
+  543915,
+  -5322,
+  0x0,
+  0x1,
+  0x55F,
+  -0xCCF,
+  0123,
+  -0654,
+  00,
+  01,
+
+  /* strings */
+  "",
+  '',
+  "0",
+  '0',
+  "1",
+  '1',
+  'string',
+  "string",
+  "true",
+  "false",
+  "FALSE",
+  "TRUE",
+  'true',
+  'false',
+  'FALSE',
+  'TRUE',
+  "NULL",
+  "null",
+
+  /* floats */
+  0.0,
+  1.0,
+  -1.0,
+  10.0000000000000000005,
+  .5e6,
+  -.5E7,
+  .5E+8,
+  -.5e+90,
+  1e5,
+  -1e5,
+  1E5,
+  -1E7,
+
+  /* objects */
+  new stdclass,
+
+  /* resources */
+  $fp,
+  $dfp,
+
+  /* arrays */
+  array(),
+  array(0),
+  array(1),
+  array(NULL),
+  array(null),
+  array("string"),
+  array(true),
+  array(TRUE),
+  array(false),
+  array(FALSE),
+  array(1,2,3,4),
+  array(1 => "One", "two" => 2),
+);
+/* loop through the $not_null_types to see working of 
+   is_null() on non null types, expected output: bool(false) */
+$loop_counter = 1;
+foreach ($not_null_types as $type ) {
+  echo "-- Iteration $loop_counter --\n"; $loop_counter++;
+  var_dump( is_null($type) );
+}
+
+echo "\n*** Testing error conditions ***\n";
+//Zero argument
+var_dump( is_null() );
+
+//arguments more than expected 
+var_dump( is_null(NULL, null) );
+ 
+echo "Done\n";
+
+// close the resources used
+fclose($fp);
+closedir($dfp);
+
+?>
+--EXPECTF--
+*** Testing is_null() with valid null values ***
+-- Iteration 1 --
+bool(true)
+-- Iteration 2 --
+bool(true)
+-- Iteration 3 --
+bool(true)
+-- Iteration 4 --
+bool(true)
+-- Iteration 5 --
+bool(true)
+-- Iteration 6 --
+bool(true)
+-- Iteration 7 --
+bool(true)
+-- Iteration 8 --
+bool(true)
+-- Iteration 9 --
+bool(true)
+-- Iteration 10 --
+bool(true)
+-- Iteration 11 --
+bool(true)
+
+*** Testing is_bool() on non null values ***
+-- Iteration 1 --
+bool(false)
+-- Iteration 2 --
+bool(false)
+-- Iteration 3 --
+bool(false)
+-- Iteration 4 --
+bool(false)
+-- Iteration 5 --
+bool(false)
+-- Iteration 6 --
+bool(false)
+-- Iteration 7 --
+bool(false)
+-- Iteration 8 --
+bool(false)
+-- Iteration 9 --
+bool(false)
+-- Iteration 10 --
+bool(false)
+-- Iteration 11 --
+bool(false)
+-- Iteration 12 --
+bool(false)
+-- Iteration 13 --
+bool(false)
+-- Iteration 14 --
+bool(false)
+-- Iteration 15 --
+bool(false)
+-- Iteration 16 --
+bool(false)
+-- Iteration 17 --
+bool(false)
+-- Iteration 18 --
+bool(false)
+-- Iteration 19 --
+bool(false)
+-- Iteration 20 --
+bool(false)
+-- Iteration 21 --
+bool(false)
+-- Iteration 22 --
+bool(false)
+-- Iteration 23 --
+bool(false)
+-- Iteration 24 --
+bool(false)
+-- Iteration 25 --
+bool(false)
+-- Iteration 26 --
+bool(false)
+-- Iteration 27 --
+bool(false)
+-- Iteration 28 --
+bool(false)
+-- Iteration 29 --
+bool(false)
+-- Iteration 30 --
+bool(false)
+-- Iteration 31 --
+bool(false)
+-- Iteration 32 --
+bool(false)
+-- Iteration 33 --
+bool(false)
+-- Iteration 34 --
+bool(false)
+-- Iteration 35 --
+bool(false)
+-- Iteration 36 --
+bool(false)
+-- Iteration 37 --
+bool(false)
+-- Iteration 38 --
+bool(false)
+-- Iteration 39 --
+bool(false)
+-- Iteration 40 --
+bool(false)
+-- Iteration 41 --
+bool(false)
+-- Iteration 42 --
+bool(false)
+-- Iteration 43 --
+bool(false)
+-- Iteration 44 --
+bool(false)
+-- Iteration 45 --
+bool(false)
+-- Iteration 46 --
+bool(false)
+-- Iteration 47 --
+bool(false)
+-- Iteration 48 --
+bool(false)
+-- Iteration 49 --
+bool(false)
+-- Iteration 50 --
+bool(false)
+-- Iteration 51 --
+bool(false)
+-- Iteration 52 --
+bool(false)
+-- Iteration 53 --
+bool(false)
+-- Iteration 54 --
+bool(false)
+-- Iteration 55 --
+bool(false)
+-- Iteration 56 --
+bool(false)
+-- Iteration 57 --
+bool(false)
+-- Iteration 58 --
+bool(false)
+-- Iteration 59 --
+bool(false)
+
+*** Testing error conditions ***
+
+Warning: is_null() expects exactly 1 parameter, 0 given in %s on line %d
+bool(false)
+
+Warning: is_null() expects exactly 1 parameter, 2 given in %s on line %d
+bool(false)
+Done