⏫ Forwardport of #11320 to 2.3-develop branch

Applied pull request patch https://github.com/magento/magento2/pull/11320.patch (created by @marinagociu) based on commit(s):
  1. 0888e8c
  2. 3fc3c1d
  3. 3c3168b
  4. 86f1419
  5. 16590f0

Fixed GitHub Issues in 2.3-develop branch:
  - #10502: Fatal error: Call getTranslateInline of null when generating some sitemap with errors (reported by @Koc)

Author: magento-engcom-team

app/code/Magento/Sitemap/Model/Observer.php

@@ -113,7 +113,6 @@ public function scheduledGenerateSitemaps()
                 $sitemap->generateXml();
             } catch (\Exception $e) {
                 $errors[] = $e->getMessage();
-                throw $e;
             }
         }
 
@@ -122,8 +121,7 @@ public function scheduledGenerateSitemaps()
             \Magento\Store\Model\ScopeInterface::SCOPE_STORE
         )
         ) {
-            $translate = $this->_translateModel->getTranslateInline();
-            $this->_translateModel->setTranslateInline(false);
+            $this->inlineTranslation->suspend();
 
             $this->_transportBuilder->setTemplateIdentifier(
                 $this->_scopeConfig->getValue(

app/code/Magento/Sitemap/Test/Unit/Model/ObserverTest.php

@@ -7,6 +7,10 @@
 
 use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
 
+/**
+ * Class ObserverTest
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
 class ObserverTest extends \PHPUnit\Framework\TestCase
 {
     /**
@@ -96,11 +100,11 @@ protected function setUp()
         );
     }
 
-    /**
-     * @expectedException \Exception
-     */
-    public function testScheduledGenerateSitemapsThrowsException()
+    public function testScheduledGenerateSitemapsSendsExceptionEmail()
     {
+        $exception = 'Sitemap Exception';
+        $transport = $this->createMock(\Magento\Framework\Mail\TransportInterface::class);
+
         $this->scopeConfigMock->expects($this->once())->method('isSetFlag')->willReturn(true);
 
         $this->collectionFactoryMock->expects($this->once())
@@ -111,7 +115,55 @@ public function testScheduledGenerateSitemapsThrowsException()
             ->method('getIterator')
             ->willReturn(new \ArrayIterator([$this->sitemapMock]));
 
-        $this->sitemapMock->expects($this->once())->method('generateXml')->willThrowException(new \Exception());
+        $this->sitemapMock->expects($this->once())
+            ->method('generateXml')
+            ->willThrowException(new \Exception($exception));
+
+        $this->scopeConfigMock->expects($this->at(1))
+            ->method('getValue')
+            ->with(
+                \Magento\Sitemap\Model\Observer::XML_PATH_ERROR_RECIPIENT,
+                \Magento\Store\Model\ScopeInterface::SCOPE_STORE
+            )
+            ->willReturn('[email protected]');
+
+        $this->inlineTranslationMock->expects($this->once())
+            ->method('suspend');
+
+        $this->transportBuilderMock->expects($this->once())
+            ->method('setTemplateIdentifier')
+            ->will($this->returnSelf());
+
+        $this->transportBuilderMock->expects($this->once())
+            ->method('setTemplateOptions')
+            ->with([
+                'area' => \Magento\Backend\App\Area\FrontNameResolver::AREA_CODE,
+                'store' => \Magento\Store\Model\Store::DEFAULT_STORE_ID,
+            ])
+            ->will($this->returnSelf());
+
+        $this->transportBuilderMock->expects($this->once())
+            ->method('setTemplateVars')
+            ->with(['warnings' => $exception])
+            ->will($this->returnSelf());
+
+        $this->transportBuilderMock->expects($this->once())
+            ->method('setFrom')
+            ->will($this->returnSelf());
+
+        $this->transportBuilderMock->expects($this->once())
+            ->method('addTo')
+            ->will($this->returnSelf());
+
+        $this->transportBuilderMock->expects($this->once())
+            ->method('getTransport')
+            ->willReturn($transport);
+
+        $transport->expects($this->once())
+            ->method('sendMessage');
+
+        $this->inlineTranslationMock->expects($this->once())
+            ->method('resume');
 
         $this->observer->scheduledGenerateSitemaps();
     }