verticalslice and reindex cleanups and tests

db.class.php

@@ -882,10 +882,18 @@ class DBHelper {
   */
   
   public static function verticalSlice($array, $field, $keyfield = null) {
+    $array = (array) $array;
+    
     $R = array();
     foreach ($array as $obj) {
-      if ($keyfield) $R[$obj[$keyfield]] = $obj[$field];
+      if (! array_key_exists($field, $obj)) die("verticalSlice: array doesn't have requested field\n");
-      else $R[] = $obj[$field];
+      
+      if ($keyfield) {
+        if (! array_key_exists($keyfield, $obj)) die("verticalSlice: array doesn't have requested field\n");  
+        $R[$obj[$keyfield]] = $obj[$field];
+      } else { 
+        $R[] = $obj[$field];
+      }
     }
     return $R;
   }
@@ -898,12 +906,15 @@ class DBHelper {
   public static function reIndex() {
     $fields = func_get_args();
     $array = array_shift($fields);
+    $array = (array) $array;
     
     $R = array();
     foreach ($array as $obj) {
       $target =& $R;
       
       foreach ($fields as $field) {
+        if (! array_key_exists($field, $obj)) die("reIndex: array doesn't have requested field\n");
+        
         $nextkey = $obj[$field];
         $target =& $target[$nextkey];
       }

simpletest/HelperTest.php

@@ -0,0 +1,51 @@
+<?
+class HelperTest extends SimpleTest {
+  function test_1_verticalslice() {
+    $all = DB::query("SELECT * FROM accounts ORDER BY id ASC");
+    $names = DBHelper::verticalSlice($all, 'username');
+    $this->assert(count($names) === 5);
+    $this->assert($names[0] === 'Abe');
+    
+    $ages = DBHelper::verticalSlice($all, 'age', 'username');
+    $this->assert(count($ages) === 5);
+    $this->assert($ages['Abe'] === '700');
+  }
+  
+  function test_2_reindex() {
+    $all = DB::query("SELECT * FROM accounts ORDER BY id ASC");
+    $names = DBHelper::reIndex($all, 'username');
+    $this->assert(count($names) === 5);
+    $this->assert($names['Bart']['username'] === 'Bart');
+    $this->assert($names['Bart']['age'] === '15');
+    
+    $names = DBHelper::reIndex($all, 'username', 'age');
+    $this->assert($names['Bart']['15']['username'] === 'Bart');
+    $this->assert($names['Bart']['15']['age'] === '15');
+  }
+  
+  function test_3_empty() {
+    $none = DB::query("SELECT * FROM accounts WHERE username=%s", 'doesnotexist');
+    $this->assert(is_array($none) && count($none) === 0);
+    $names = DBHelper::verticalSlice($none, 'username', 'age');
+    $this->assert(is_array($names) && count($names) === 0);
+    
+    $names_other = DBHelper::reIndex($none, 'username', 'age');
+    $this->assert(is_array($names_other) && count($names_other) === 0);
+  }
+  
+  function test_4_null() {
+    DB::query("UPDATE accounts SET password = NULL WHERE username=%s", 'Bart');
+    
+    $all = DB::query("SELECT * FROM accounts ORDER BY id ASC");
+    $ages = DBHelper::verticalSlice($all, 'age', 'password');
+    $this->assert(count($ages) === 5);
+    $this->assert($ages[''] === '15');
+    
+    $passwords = DBHelper::reIndex($all, 'password');
+    $this->assert(count($passwords) === 5);
+    $this->assert($passwords['']['username'] === 'Bart');
+    $this->assert($passwords['']['password'] === NULL);
+  }
+  
+}
+?>

simpletest/ObjectTest.php

@@ -15,7 +15,7 @@ class ObjectTest extends SimpleTest {
     $this->mdb->query("CREATE TABLE `accounts` (
     `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY ,
     `username` VARCHAR( 255 ) NOT NULL ,
-    `password` VARCHAR( 255 ) NOT NULL ,
+    `password` VARCHAR( 255 ) NULL ,
     `age` INT NOT NULL DEFAULT '10',
     `height` DOUBLE NOT NULL DEFAULT '10.0',
     `favorite_word` VARCHAR( 255 ) NULL DEFAULT 'hi'

simpletest/test.php

@@ -37,6 +37,7 @@ require_once 'ObjectTest.php';
 require_once 'WhereClauseTest.php';
 require_once 'ErrorTest.php';
 require_once 'TransactionTest.php';
+require_once 'HelperTest.php';
 
 $classes_to_test = array(
   'BasicTest',
@@ -44,6 +45,7 @@ $classes_to_test = array(
   'ObjectTest',
   'ErrorTest',
   'TransactionTest',
+  'HelperTest',
 );
 
 if ($is_php_53) {