Issue #2969551 by quietone, mikelutz, joachim, benjifisher, catch: Migrate...

Issue #2969551 by quietone, mikelutz, joachim, benjifisher, catch: Migrate messages from caught exceptions need file and line details

core/modules/migrate/src/MigrateExecutable.php

@@ -189,7 +189,11 @@ public function import() {
     }
     catch (\Exception $e) {
       $this->message->display(
-        $this->t('Migration failed with source plugin exception: @e', ['@e' => $e->getMessage()]), 'error');
+        $this->t('Migration failed with source plugin exception: @e in @file line @line', [
+          '@e' => $e->getMessage(),
+          '@file' => $e->getFile(),
+          '@line' => $e->getLine(),
+        ]), 'error');
       $this->migration->setStatus(MigrationInterface::STATUS_IDLE);
       return MigrationInterface::RESULT_FAILED;
     }
@@ -269,8 +273,11 @@ public function import() {
       }
       catch (\Exception $e) {
         $this->message->display(
-          $this->t('Migration failed with source plugin exception: @e',
-            ['@e' => $e->getMessage()]), 'error');
+          $this->t('Migration failed with source plugin exception: @e in @file line @line', [
+            '@e' => $e->getMessage(),
+            '@file' => $e->getFile(),
+            '@line' => $e->getLine(),
+          ]), 'error');
         $this->migration->setStatus(MigrationInterface::STATUS_IDLE);
         return MigrationInterface::RESULT_FAILED;
       }

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

@@ -66,12 +66,16 @@ public function testImportWithFailingRewind() {
     $source->expects($this->once())
       ->method('rewind')
       ->will($this->throwException(new \Exception($exception_message)));
+    // The exception message contains the line number where it is thrown. Save
+    // it for the testing the exception message.
+    $line = (__LINE__) - 3;
 
     $this->migration->expects($this->any())
       ->method('getSourcePlugin')
       ->will($this->returnValue($source));
 
     // Ensure that a message with the proper message was added.
+    $exception_message .= " in " . __FILE__ . " line $line";
     $this->message->expects($this->once())
       ->method('display')
       ->with("Migration failed with source plugin exception: " . Html::escape($exception_message));