Add ability to use Selenium driver instead of Zombie.js.

- Note that as of this writing, tests only pass under Zombie.js.

build.xml

@@ -20,6 +20,7 @@
   <property name="pgsqlhost" value="localhost" />
   <property name="pgsqlrootuser" value="postgres" />
   <property name="phpunit_extra_params" value="" />
+  <property name="mink_driver" value="zombiejs" /><!-- may also be set to selenium -->
   <property name="php-cs-fixers" value="no_blank_lines_before_namespaces,function_call_space,trailing_spaces,unused_use,lowercase_keywords,encoding,parenthesis,php_closing_tag,visibility,duplicate_semicolon,extra_empty_lines,no_blank_lines_after_class_opening,no_empty_lines_after_phpdocs,operators_spaces,spaces_before_semicolon,ternary_spaces,concat_with_spaces,short_array_syntax,phpdoc_no_access,remove_leading_slash_use" />
 
 
@@ -109,12 +110,12 @@
 
   <!-- PHPUnit -->
   <target name="phpunit" description="Run tests">
-    <exec dir="${srcdir}/module/VuFind/tests" command="NODE_PATH=${nodepath} VUFIND_LOCAL_DIR=${srcdir}/local VUFIND_URL=${vufindurl} phpunit -dzend.enable_gc=0 --log-junit ${builddir}/reports/phpunit.xml --coverage-clover ${builddir}/reports/coverage/clover.xml --coverage-html ${builddir}/reports/coverage/ ${phpunit_extra_params}" passthru="true" checkreturn="true" />
+    <exec dir="${srcdir}/module/VuFind/tests" command="NODE_PATH=${nodepath} VUFIND_MINK_DRIVER=${mink_driver} VUFIND_LOCAL_DIR=${srcdir}/local VUFIND_URL=${vufindurl} phpunit -dzend.enable_gc=0 --log-junit ${builddir}/reports/phpunit.xml --coverage-clover ${builddir}/reports/coverage/clover.xml --coverage-html ${builddir}/reports/coverage/ ${phpunit_extra_params}" passthru="true" checkreturn="true" />
   </target>
 
   <!-- PHPUnit without logging output -->
   <target name="phpunitfast" description="Run tests">
-    <exec dir="${srcdir}/module/VuFind/tests" command="NODE_PATH=${nodepath} VUFIND_LOCAL_DIR=${srcdir}/local VUFIND_URL=${vufindurl} phpunit -dzend.enable_gc=0 ${phpunit_extra_params}" passthru="true" checkreturn="true" />
+    <exec dir="${srcdir}/module/VuFind/tests" command="NODE_PATH=${nodepath} VUFIND_MINK_DRIVER=${mink_driver} VUFIND_LOCAL_DIR=${srcdir}/local VUFIND_URL=${vufindurl} phpunit -dzend.enable_gc=0 ${phpunit_extra_params}" passthru="true" checkreturn="true" />
   </target>
 
   <!-- Install and Activate VuFind -->

module/VuFind/src/VuFindTest/Unit/MinkTestCase.php

@@ -111,9 +111,11 @@ abstract class MinkTestCase extends DbTestCase
     protected function getMinkDriver()
     {
         if (self::$driver === false) {
-            self::$driver = new ZombieDriver(
-                new \Behat\Mink\Driver\NodeJS\Server\ZombieServer()
-            );
+            self::$driver = (getenv('VUFIND_MINK_DRIVER') === 'selenium')
+                ? new \Behat\Mink\Driver\Selenium2Driver('firefox')
+                : new ZombieDriver(
+                    new \Behat\Mink\Driver\NodeJS\Server\ZombieServer()
+                );
         }
         return self::$driver;
     }