diff --git a/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php b/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
index f113c7d..5c8354c 100644
--- a/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/ExplodeTest.php
@@ -21,7 +21,10 @@ class ExplodeTest extends MigrateProcessTestCase {
    * {@inheritdoc}
    */
   protected function setUp() {
-    $this->plugin = new TestExplode();
+    $configuration = [
+      'delimiter' => ',',
+    ];
+    $this->plugin = new Explode($configuration, 'map', []);
     parent::setUp();
   }
 
@@ -29,7 +32,6 @@ protected function setUp() {
    * Test explode transform process works.
    */
   public function testTransform() {
-    $this->plugin->setDelimiter(',');
     $value = $this->plugin->transform('foo,bar,tik', $this->migrateExecutable, $this->row, 'destinationproperty');
     $this->assertSame($value, ['foo', 'bar', 'tik']);
   }
@@ -38,10 +40,8 @@ public function testTransform() {
    * Test explode transform process works with a limit.
    */
   public function testTransformLimit() {
-    $this->plugin->setDelimiter('_');
-    $this->plugin->setLimit(2);
-
-    $value = $this->plugin->transform('foo_bar_tik', $this->migrateExecutable, $this->row, 'destinationproperty');
+    $plugin = new Explode(['delimiter' => '_', 'limit' => 2], 'map', []);
+    $value = $plugin->transform('foo_bar_tik', $this->migrateExecutable, $this->row, 'destinationproperty');
     $this->assertSame($value, ['foo', 'bar_tik']);
   }
 
@@ -49,10 +49,9 @@ public function testTransformLimit() {
    * Test if the explode process can be chained with a handles_multiple process.
    */
   public function testChainedTransform() {
-    $this->plugin->setDelimiter(',');
     $exploded = $this->plugin->transform('foo,bar,tik', $this->migrateExecutable, $this->row, 'destinationproperty');
 
-    $concat = new TestConcatAlso();
+    $concat = new Concat([], 'map', []);
     $concatenated = $concat->transform($exploded, $this->migrateExecutable, $this->row, 'destinationproperty');
     $this->assertSame($concatenated, 'foobartik');
   }
@@ -61,6 +60,7 @@ public function testChainedTransform() {
    * Test explode fails properly on non-strings.
    *
    * @expectedException \Drupal\migrate\MigrateException
+   *
    * @expectedExceptionMessage is not a string
    */
   public function testExplodeWithNonString() {
@@ -71,42 +71,12 @@ public function testExplodeWithNonString() {
    * Test explode fails with empty delimiter.
    *
    * @expectedException \Drupal\migrate\MigrateException
+   *
    * @expectedExceptionMessage delimiter is empty
    */
   public function testExplodeWithEmptyDelimiter() {
-    $this->plugin->setDelimiter('');
-    $this->plugin->transform('foo,bar', $this->migrateExecutable, $this->row, 'destinationproperty');
-  }
-
-}
-
-class TestExplode extends Explode {
-  public function __construct() {
-  }
-
-  /**
-   * Set the delimiter.
-   *
-   * @param string $delimiter
-   *   The new delimiter.
-   */
-  public function setDelimiter($delimiter) {
-    $this->configuration['delimiter'] = $delimiter;
-  }
-
-  /**
-   * Set the limit.
-   *
-   * @param integer $limit
-   *   The new limit.
-   */
-  public function setLimit($limit) {
-    $this->configuration['limit'] = $limit;
+    $plugin = new Explode(['delimiter' => ''], 'map', []);
+    $plugin->transform('foo,bar', $this->migrateExecutable, $this->row, 'destinationproperty');
   }
 
 }
-
-class TestConcatAlso extends Concat {
-  public function __construct() {
-  }
-}