Update to Drupal 8.2.0. For more information, see https://www.drupal.org/project/drupal/releases/8.2.0

core/modules/migrate/tests/modules/migrate_high_water_test/config/install/node.type.sql_import_node.yml

@@ -0,0 +1,9 @@
+langcode: en
+status: true
+name: High Water import node
+type: high_water_import_node
+description: ''
+help: ''
+new_revision: false
+preview_mode: 1
+display_submitted: true

core/modules/migrate/tests/modules/migrate_high_water_test/migrate_sql_test.info.yml

@@ -0,0 +1,7 @@
+type: module
+name: Migrate SQL Source test
+description: 'Provides a database table and records for SQL import testing.'
+package: Testing
+core: 8.x
+dependencies:
+  - migrate

core/modules/migrate/tests/modules/migrate_high_water_test/migration_templates/migrate.migration.high_water_test.yml

@@ -0,0 +1,16 @@
+id: high_water_test
+label: High water test.
+source:
+  plugin: high_water_test
+  high_water_property:
+    name: changed
+destination:
+  plugin: entity:node
+migration_tags:
+  test: test
+process:
+  changed: changed
+  title: title
+  type:
+    plugin: default_value
+    default_value: high_water_import_node

core/modules/migrate/tests/modules/migrate_high_water_test/src/Plugin/migrate/source/HighWaterTest.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Drupal\migrate_sql_test\Plugin\migrate\source;
+
+use Drupal\migrate\Plugin\migrate\source\SqlBase;
+
+/**
+ * Source plugin for migration high water tests.
+ *
+ * @MigrateSource(
+ *   id = "high_water_test"
+ * )
+ */
+class HighWaterTest extends SqlBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function query() {
+    $query = $this
+      ->select('high_water_node', 'm')
+      ->fields('m', array_keys($this->fields()));
+    return $query;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function fields() {
+    $fields = [
+      'id' => $this->t('Id'),
+      'title' => $this->t('Title'),
+      'changed' => $this->t('Changed'),
+    ];
+
+    return $fields;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getIds() {
+    return [
+      'id' => [
+        'type' => 'integer',
+      ],
+    ];
+  }
+
+}