Issue #3187794 by benjifisher: Remove redundant kernel tests in the Migrate module

(cherry picked from commit 65f070f4)

core/modules/migrate/tests/src/Kernel/MigrateLookupTest.php

@@ -2,7 +2,6 @@
 
 namespace Drupal\Tests\migrate\Kernel;
 
-use Drupal\Component\Plugin\Exception\PluginNotFoundException;
 use Drupal\migrate\MigrateException;
 use Drupal\Tests\node\Traits\ContentTypeCreationTrait;
 
@@ -78,16 +77,6 @@ public function testInvalidIdLookup() {
     $this->migrateLookup->lookup('sample_lookup_migration', ['invalid_id' => 25]);
   }
 
-  /**
-   * Tests an invalid lookup.
-   */
-  public function testInvalidMigrationLookup() {
-    $this->expectException(PluginNotFoundException::class);
-    $this->expectExceptionMessage("Plugin ID 'invalid_migration' was not found.");
-    // Test invalid migration_id.
-    $this->migrateLookup->lookup('invalid_migration', ['id' => 1337]);
-  }
-
   /**
    * Tests lookups with multiple source ids.
    */

core/modules/migrate/tests/src/Kernel/MigrateStubTest.php

@@ -2,7 +2,6 @@
 
 namespace Drupal\Tests\migrate\Kernel;
 
-use Drupal\Component\Plugin\Exception\PluginNotFoundException;
 use Drupal\Tests\node\Traits\ContentTypeCreationTrait;
 
 /**
@@ -118,13 +117,4 @@ public function testInvalidSourceIdKeys() {
     $this->migrateStub->createStub('sample_stubbing_migration_with_multiple_source_ids', ['id' => 17, 'not_a_key' => 17]);
   }
 
-  /**
-   * Tests that an exception is thrown if a migration does not exist.
-   */
-  public function testErrorOnMigrationNotFound() {
-    $this->expectException(PluginNotFoundException::class);
-    $this->expectExceptionMessage("Plugin ID 'nonexistent_migration' was not found.");
-    $this->migrateStub->createStub('nonexistent_migration', [1]);
-  }
-
 }

core/modules/migrate/tests/src/Unit/MigrateLookupTest.php

@@ -53,6 +53,7 @@ public function testExceptionOnMigrationNotFound() {
     $migration_plugin_manager = $this->prophesize(MigrationPluginManagerInterface::class);
     $migration_plugin_manager->createInstances('bad_plugin')->willReturn([]);
     $this->expectException(PluginNotFoundException::class);
+    $this->expectExceptionMessage("Plugin ID 'bad_plugin' was not found.");
     $lookup = new MigrateLookup($migration_plugin_manager->reveal());
     $lookup->lookup('bad_plugin', [1]);
   }

core/modules/migrate/tests/src/Unit/MigrateStubTest.php

@@ -72,6 +72,7 @@ public function testCreateStub() {
   public function testExceptionOnPluginNotFound() {
     $this->migrationPluginManager->createInstances(['test_migration'])->willReturn([]);
     $this->expectException(PluginNotFoundException::class);
+    $this->expectExceptionMessage("Plugin ID 'test_migration' was not found.");
     $stub = new MigrateStub($this->migrationPluginManager->reveal());
     $stub->createStub('test_migration', [1]);
   }