D9 Run batch process during pm-enable when needed.

src/Drupal/Commands/pm/PmCommands.php

@@ -79,6 +79,9 @@ public function enable(array $modules)
         if (!$this->getModuleInstaller()->install($modules, true)) {
             throw new \Exception('Unable to install modules.');
         }
+        if (batch_get()) {
+            drush_backend_batch_process();
+        }
         $this->logger()->success(dt('Successfully enabled: !list', $todo_str));
         // Our logger got blown away during the container rebuild above.
         $boot = Drush::bootstrapManager()->bootstrap();

tests/PmEnLocaleImportTest.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Unish;
+
+use Drupal\Core\Language\Language;
+use Drupal\language\Entity\ConfigurableLanguage;
+use Webmozart\PathUtil\Path;
+
+/**
+ *  @group slow
+ *  @group pm
+ */
+class PmEnLocaleImportCase extends CommandUnishTestCase
+{
+
+    public function testBatchImportTranslations()
+    {
+        $sites = $this->setUpDrupal(1, true);
+        $uri = key($sites);
+        $root = $this->webroot();
+        $options = array(
+            'root' => $root,
+            'uri' => $uri,
+        );
+
+        $this->drush('pm-enable', ['language', 'locale', 'dblog'], $options);
+        $this->drush('config-set', ['locale.settings', 'translation.import_enabled', true], $options);
+
+        // Setup the interface translation system and prepare a source translation file.
+        // The test uses a local po file as translation source. This po file will be
+        // imported from the translations directory when a module is enabled.
+        $this->drush('config-set', ['locale.settings', 'translation.use_source', 'locale'], $options);
+        $this->drush('config-set', ['locale.settings', 'translation.default_filename', '%project.%language.po'], $options);
+        $this->drush('config-set', ['locale.settings', 'translation.path', '../translations'], $options);
+        $source = Path::join(__DIR__, '/resources/devel.nl.po');
+        $translationDir = Path::join($root, '../translations');
+        $this->mkdir($translationDir);
+        copy($source, $translationDir . '/devel.nl.po');
+
+        $this->drush('php-eval', ['\Drupal\language\Entity\ConfigurableLanguage::create([
+            "id" => "nl",
+            "label" => "Dutch",
+        ])->save()']);
+
+        $this->drush('pm-enable', ['devel'], $options);
+        $this->drush('watchdog-show', [], $options);
+        $this->assertContains('Translations imported:', $this->getSimplifiedOutput());
+
+        // Clean up the mess this test creates.
+        unlink($translationDir . '/devel.nl.po');
+        rmdir($translationDir);
+    }
+}

tests/resources/devel.nl.po

@@ -0,0 +1,15 @@
+# Mock Dutch translation of Devel
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Devel\n"
+"POT-Creation-Date: 2016-12-18 21:58+0000\n"
+"PO-Revision-Date: YYYY-mm-DD HH:MM+ZZZZ\n"
+"Language-Team: Dutch\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n!=1);\n"
+
+msgid "Devel"
+msgstr "NL Devel"