diff --git a/tests/src/Kernel/Plugin/migrate/source/CSVKernelTest.php b/tests/src/Kernel/Plugin/migrate/source/CSVKernelTest.php
index b56cfd2..7fd509c 100644
--- a/tests/src/Kernel/Plugin/migrate/source/CSVKernelTest.php
+++ b/tests/src/Kernel/Plugin/migrate/source/CSVKernelTest.php
@@ -4,8 +4,6 @@
 
 use Drupal\KernelTests\KernelTestBase;
 use Drupal\migrate\Plugin\MigratePluginManagerInterface;
-use Drupal\Tests\migrate_source_csv\CSVDataProvider;
-
 
 /**
  * @coversDefaultClass \Drupal\migrate_source_csv\Plugin\migrate\source\CSV
@@ -14,8 +12,6 @@
  */
 class CSVTest extends KernelTestBase {
 
-  use CSVDataProvider;
-
   /**
    * {@inheritdoc}
    */
diff --git a/tests/src/Unit/CSVUnitBase.php b/tests/src/Unit/CSVUnitBase.php
index 9ef9250..268dc28 100644
--- a/tests/src/Unit/CSVUnitBase.php
+++ b/tests/src/Unit/CSVUnitBase.php
@@ -1,13 +1,80 @@
 <?php
 namespace Drupal\Tests\migrate_source_csv\Unit;
 
-use Drupal\Tests\migrate_source_csv\CSVDataProvider;
 use Drupal\Tests\UnitTestCase;
+use org\bovigo\vfs\vfsStream;
 
 /**
  * Base class for CSV unit tests.
  */
 class CSVUnitBase extends UnitTestCase {
 
-  use CSVDataProvider;
+  /**
+   * The happy path file url.
+   *
+   * @var string
+   */
+  protected $happyPath;
+
+  /**
+   * The un-happy path file url.
+   *
+   * @var string
+   */
+  protected $sad;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $root_dir = vfsStream::setup('root');
+    $happy = <<<'EOD'
+id,first_name,last_name,email,country,ip_address
+1,Justin,Dean,jdean0@example.com,Indonesia,60.242.130.40
+2,Joan,Jordan,jjordan1@example.com,Thailand,137.230.209.171
+3,William,Ray,wray2@example.com,Germany,4.75.251.71
+4,Jack,Collins,jcollins3@example.com,Indonesia,118.241.243.64
+5,Jean,Moreno,jmoreno4@example.com,Portugal,12.24.215.20
+6,Dennis,Mitchell,dmitchell5@example.com,Mexico,185.24.131.116
+7,Harry,West,hwest6@example.com,Uzbekistan,101.74.110.171
+8,Rebecca,Hunt,rhunt7@example.com,France,253.107.6.23
+9,Rose,Rogers,rrogers8@example.com,China,21.2.126.228
+10,Juan,Walker,jwalker9@example.com,Angola,192.118.77.225
+11,Lois,Price,lpricea@example.com,Greece,231.185.100.19
+12,Patricia,Bell,pbellb@example.com,Sweden,226.2.254.94
+13,Gerald,Kelly,gkellyc@example.com,China,31.204.2.163
+14,Kimberly,Jackson,kjacksond@example.com,Thailand,19.187.65.116
+15,Jason,Mason,jmasone@example.com,Greece,225.129.68.203
+EOD;
+    $sad = <<<'EOD'
+1|%Justin%|Dean|jdean0@example.com|Indonesia|60.242.130.40
+2|Joan|Jordan|jjordan1@example.com|Thailand|137.230.209.171
+3|William|Ray|wray2@example.com|Germany|4.75.251.71
+4|Jack|Collins|jcollins3@example.com|Indonesia|118.241.243.64
+5|Jean|Moreno|jmoreno4@example.com|Portugal|12.24.215.20
+6|Dennis|Mitchell|dmitchell5@example.com|Mexico|185.24.131.116
+7|Harry|West|hwest6@example.com|Uzbekistan|101.74.110.171
+8|Rebecca|Hunt|rhunt7@example.com|France|253.107.6.23
+9|Rose|Rogers|rrogers8@example.com|China|21.2.126.228
+10|Juan|Walker|jwalker9@example.com|Angola|192.118.77.225
+11|Lois|Price|lpricea@example.com|Greece|231.185.100.19
+12|Patricia|Bell|pbellb@example.com|Sweden|226.2.254.94
+13|Gerald|Kelly|gkellyc@example.com|China|31.204.2.163
+14|Kimberly|Jackson|kjacksond@example.com|Thailand|19.187.65.116
+15|Jason|Mason|jmasone@example.com|Greece|225.129.68.203
+
+EOD;
+
+    $this->happyPath = vfsStream::newFile('data.csv')
+      ->at($root_dir)
+      ->withContent($happy)
+      ->url();
+    $this->sad = vfsStream::newFile('data_edge_case.csv')
+      ->at($root_dir)
+      ->withContent($sad)
+      ->url();
+
+  }
 }