Truncate extended table if _system_ fields found. (eg. from forum test)

e107_tests/tests/unit/e107Test.php

@@ -871,7 +871,7 @@ class e107Test extends \Codeception\Test\Unit
 			e_PLUGIN_ABS . 'forum/forum_viewtopic.php?f=post&id=123',
 			$url, "Generated href does not match expectation"
 		);
-		e107::getDb()->truncate('user_extended_struct');// reset.
+
 	}
 
 	public function testUrlOptionQueryUrlEncoded()
@@ -889,7 +889,7 @@ class e107Test extends \Codeception\Test\Unit
 			'forum/post/?didn%27t=%3Ctag%20attr%3D%22such%20wow%22%3E%3C/tag%3E&did=much%20doge',
 			$url, "Generated href query string did not have expected URL encoding"
 		);
-		e107::getDb()->truncate('user_extended_struct');// reset.
+
 	}
 
 	public function testUrlEscapesHtmlSpecialChars()
@@ -906,7 +906,7 @@ class e107Test extends \Codeception\Test\Unit
 			'forum/<>/#Arts & Crafts <tag attr="can't inject here"></tag>',
 			$url, "Generated href did not prevent HTML tag injection as expected"
 		);
-		e107::getDb()->truncate('user_extended_struct');// reset.
+
 	}
 	/*
 			public function testRedirect()

e107_tests/tests/unit/e107_user_extendedTest.php

@@ -94,7 +94,12 @@
 				'country'   => 17,
 			);
 
-
+			// clear the table.
+			$sql = e107::getDb();
+			if($sql->select('user_extended_struct', 'user_extended_struct_id', "user_extended_struct_text = '_system_'"))
+			{
+				$sql->truncate('user_extended_struct');
+			}
 
 
 			// Add a field of each type.
@@ -273,13 +278,15 @@
 
 			foreach($this->userValues as $field => $value)
 			{
-				if(empty($value))
+				if(!isset($legacyExpectedIcons[$field]))
 				{
 					continue;
 				}
 
 				$parm = $field.'.icon.1';
 				$result = (string) $tp->parseTemplate('{USER_EXTENDED='.$parm.'}', true);  // retrieve value for $field of user_id: 1.
+
+
 				$this->assertStringContainsString($legacyExpectedIcons[$field], $result);
 			}
 

e107_tests/tests/unit/pluginsTest.php

@@ -180,7 +180,7 @@
 		{
 			$this->pluginInstall('forum');
 			$this->pluginUninstall('forum');
-			e107::getDb()->truncate('user_extended_struct'); // clear the table
+
 		}
 
 		public function testGallery()