diff --git a/test/classes/plugin/export/ExportCodegenTest.php b/test/classes/plugin/export/ExportCodegenTest.php
index ca6f30001f10..cf7bb3fb8a41 100644
--- a/test/classes/plugin/export/ExportCodegenTest.php
+++ b/test/classes/plugin/export/ExportCodegenTest.php
@@ -11,13 +11,15 @@
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
+
 /**
  * tests for PMA\libraries\plugins\export\ExportCodegen class
  *
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportCodegenTest extends PHPUnit_Framework_TestCase
+class ExportCodegenTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportCsvTest.php b/test/classes/plugin/export/ExportCsvTest.php
index e748713234de..b1d6707943f8 100644
--- a/test/classes/plugin/export/ExportCsvTest.php
+++ b/test/classes/plugin/export/ExportCsvTest.php
@@ -11,13 +11,15 @@
 require_once 'libraries/config.default.php';
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
+
 /**
  * tests for PMA\libraries\plugins\export\ExportCsv class
  *
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportCsvTest extends PHPUnit_Framework_TestCase
+class ExportCsvTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportExcelTest.php b/test/classes/plugin/export/ExportExcelTest.php
index cd3d247e0b93..bedc852851ce 100644
--- a/test/classes/plugin/export/ExportExcelTest.php
+++ b/test/classes/plugin/export/ExportExcelTest.php
@@ -11,13 +11,15 @@
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
+
 /**
  * tests for PMA\libraries\plugins\export\ExportExcel class
  *
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportExcelTest extends PHPUnit_Framework_TestCase
+class ExportExcelTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportHtmlwordTest.php b/test/classes/plugin/export/ExportHtmlwordTest.php
index 17b6d9299254..e036469757d5 100644
--- a/test/classes/plugin/export/ExportHtmlwordTest.php
+++ b/test/classes/plugin/export/ExportHtmlwordTest.php
@@ -13,13 +13,15 @@
 require_once 'libraries/relation.lib.php';
 require_once 'libraries/transformations.lib.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
+
 /**
  * tests for PMA\libraries\plugins\export\ExportHtmlword class
  *
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportHtmlwordTest extends PHPUnit_Framework_TestCase
+class ExportHtmlwordTest extends PMATestCase
 {
     protected $object;
 
@@ -874,8 +876,6 @@ public function testExportStructure()
      */
     public function testFormatOneColumnDefinition()
     {
-        $GLOBALS['cfg']['LimitChars'] = 40;
-
         $method = new ReflectionMethod(
             'PMA\libraries\plugins\export\ExportHtmlword', 'formatOneColumnDefinition'
         );
diff --git a/test/classes/plugin/export/ExportJsonTest.php b/test/classes/plugin/export/ExportJsonTest.php
index 13c27f54e185..513efb2e987c 100644
--- a/test/classes/plugin/export/ExportJsonTest.php
+++ b/test/classes/plugin/export/ExportJsonTest.php
@@ -11,13 +11,15 @@
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
+
 /**
  * tests for PMA\libraries\plugins\export\ExportJson class
  *
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportJsonTest extends PHPUnit_Framework_TestCase
+class ExportJsonTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportLatexTest.php b/test/classes/plugin/export/ExportLatexTest.php
index 034602fe6bb3..4fe1610b9a92 100644
--- a/test/classes/plugin/export/ExportLatexTest.php
+++ b/test/classes/plugin/export/ExportLatexTest.php
@@ -13,13 +13,15 @@
 require_once 'libraries/relation.lib.php';
 require_once 'libraries/transformations.lib.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
+
 /**
  * tests for PMA\libraries\plugins\export\ExportLatex class
  *
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportLatexTest extends PHPUnit_Framework_TestCase
+class ExportLatexTest extends PMATestCase
 {
     protected $object;
 
@@ -754,7 +756,6 @@ public function testExportStructure()
         }
 
         $GLOBALS['cfgRelation']['relation'] = true;
-        $GLOBALS['cfg']['LimitChars'] = 40;
         $_SESSION['relation'][0] = array(
             'PMA_VERSION' => PMA_VERSION,
             'relwork' => true,
diff --git a/test/classes/plugin/export/ExportMediawikiTest.php b/test/classes/plugin/export/ExportMediawikiTest.php
index d66db87d0206..99840705047e 100644
--- a/test/classes/plugin/export/ExportMediawikiTest.php
+++ b/test/classes/plugin/export/ExportMediawikiTest.php
@@ -11,6 +11,7 @@
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportMediawiki class
@@ -18,7 +19,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportMediawikiTest extends PHPUnit_Framework_TestCase
+class ExportMediawikiTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportOdsTest.php b/test/classes/plugin/export/ExportOdsTest.php
index 655dc305ea17..796132b953c9 100644
--- a/test/classes/plugin/export/ExportOdsTest.php
+++ b/test/classes/plugin/export/ExportOdsTest.php
@@ -14,6 +14,7 @@
 require_once 'libraries/config.default.php';
 require_once 'export.php';
 require_once 'libraries/opendocument.lib.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportOds class
@@ -21,7 +22,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportOdsTest extends PHPUnit_Framework_TestCase
+class ExportOdsTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportOdtTest.php b/test/classes/plugin/export/ExportOdtTest.php
index 3f51872c675f..244a0be9f1ca 100644
--- a/test/classes/plugin/export/ExportOdtTest.php
+++ b/test/classes/plugin/export/ExportOdtTest.php
@@ -15,6 +15,7 @@
 require_once 'libraries/relation.lib.php';
 require_once 'libraries/transformations.lib.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportOdt class
@@ -22,7 +23,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportOdtTest extends PHPUnit_Framework_TestCase
+class ExportOdtTest extends PMATestCase
 {
     protected $object;
 
@@ -1051,8 +1052,6 @@ public function testExportStructure()
      */
     public function testFormatOneColumnDefinition()
     {
-        $GLOBALS['cfg']['LimitChars'] = 40;
-
         $method = new ReflectionMethod(
             'PMA\libraries\plugins\export\ExportOdt', 'formatOneColumnDefinition'
         );
diff --git a/test/classes/plugin/export/ExportPdfTest.php b/test/classes/plugin/export/ExportPdfTest.php
index 13cb0938e0e3..5f8bc666261b 100644
--- a/test/classes/plugin/export/ExportPdfTest.php
+++ b/test/classes/plugin/export/ExportPdfTest.php
@@ -12,6 +12,7 @@
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportPdf class
@@ -19,7 +20,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportPdfTest extends PHPUnit_Framework_TestCase
+class ExportPdfTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportPhparrayTest.php b/test/classes/plugin/export/ExportPhparrayTest.php
index 6c5bd4c934ea..7082c2897193 100644
--- a/test/classes/plugin/export/ExportPhparrayTest.php
+++ b/test/classes/plugin/export/ExportPhparrayTest.php
@@ -11,6 +11,7 @@
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportPhparray class
@@ -18,7 +19,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportPhparrayTest extends PHPUnit_Framework_TestCase
+class ExportPhparrayTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportSqlTest.php b/test/classes/plugin/export/ExportSqlTest.php
index fac1830b3385..14d2b88734e5 100644
--- a/test/classes/plugin/export/ExportSqlTest.php
+++ b/test/classes/plugin/export/ExportSqlTest.php
@@ -16,6 +16,7 @@
 require_once 'libraries/transformations.lib.php';
 require_once 'libraries/charset_conversion.lib.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportSql class
@@ -23,7 +24,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportSqlTest extends PHPUnit_Framework_TestCase
+class ExportSqlTest extends PMATestCase
 {
     protected $object;
 
@@ -856,7 +857,6 @@ public function testGetTableDefForView()
     {
         $GLOBALS['sql_drop_table'] = true;
         $GLOBALS['sql_if_not_exists'] = true;
-        $GLOBALS['cfg']['LimitChars'] = 40;
 
         $dbi = $this->getMockBuilder('PMA\libraries\DatabaseInterface')
             ->disableOriginalConstructor()
diff --git a/test/classes/plugin/export/ExportTexytextTest.php b/test/classes/plugin/export/ExportTexytextTest.php
index 04b0874d0f12..469b7f555bd6 100644
--- a/test/classes/plugin/export/ExportTexytextTest.php
+++ b/test/classes/plugin/export/ExportTexytextTest.php
@@ -13,6 +13,7 @@
 require_once 'libraries/relation.lib.php';
 require_once 'libraries/transformations.lib.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportTexytext class
@@ -20,7 +21,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportTexytextTest extends PHPUnit_Framework_TestCase
+class ExportTexytextTest extends PMATestCase
 {
     protected $object;
 
@@ -617,8 +618,6 @@ public function testExportStructure()
      */
     public function testFormatOneColumnDefinition()
     {
-        $GLOBALS['cfg']['LimitChars'] = 40;
-
         $cols = array(
             'Null' => 'Yes',
             'Field' => 'field',
diff --git a/test/classes/plugin/export/ExportXmlTest.php b/test/classes/plugin/export/ExportXmlTest.php
index 305a8a5a926e..71b055ccfe15 100644
--- a/test/classes/plugin/export/ExportXmlTest.php
+++ b/test/classes/plugin/export/ExportXmlTest.php
@@ -14,6 +14,7 @@
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportXml class
@@ -21,7 +22,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportXmlTest extends PHPUnit_Framework_TestCase
+class ExportXmlTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/ExportYamlTest.php b/test/classes/plugin/export/ExportYamlTest.php
index 2793417ca9cc..6a37263bb5f6 100644
--- a/test/classes/plugin/export/ExportYamlTest.php
+++ b/test/classes/plugin/export/ExportYamlTest.php
@@ -12,6 +12,7 @@
 require_once 'libraries/config.default.php';
 require_once 'libraries/database_interface.inc.php';
 require_once 'export.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\ExportYaml class
@@ -19,7 +20,7 @@
  * @package PhpMyAdmin-test
  * @group medium
  */
-class ExportYamlTest extends PHPUnit_Framework_TestCase
+class ExportYamlTest extends PMATestCase
 {
     protected $object;
 
diff --git a/test/classes/plugin/export/TablePropertyTest.php b/test/classes/plugin/export/TablePropertyTest.php
index 0041dcc7962b..7b4f4d2f16a0 100644
--- a/test/classes/plugin/export/TablePropertyTest.php
+++ b/test/classes/plugin/export/TablePropertyTest.php
@@ -9,13 +9,14 @@
 
 require_once 'libraries/php-gettext/gettext.inc';
 require_once 'libraries/config.default.php';
+require_once 'test/PMATestCase.php';
 
 /**
  * tests for PMA\libraries\plugins\export\TableProperty class
  *
  * @package PhpMyAdmin-test
  */
-class TablePropertyTest extends PHPUnit_Framework_TestCase
+class TablePropertyTest extends PMATestCase
 {
     protected $object;