only in patch2:
unchanged:
--- a/core/modules/block/tests/src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php
+++ b/core/modules/block/tests/src/Unit/Plugin/DisplayVariant/BlockPageVariantTest.php
@@ -192,11 +192,17 @@ public function testBuild(array $blocks_config, $visible_block_count, array $exp
     $block_plugin = $this->getMock('Drupal\Core\Block\BlockPluginInterface');
     $main_content_block_plugin = $this->getMock('Drupal\Core\Block\MainContentBlockPluginInterface');
     $messages_block_plugin = $this->getMock('Drupal\Core\Block\MessagesBlockPluginInterface');
+    $access_result = $this->getMockBuilder('\Drupal\Core\Access\AccessResultAllowed')
+      ->disableOriginalConstructor()
+      ->getMock();
     foreach ($blocks_config as $block_id => $block_config) {
       $block = $this->getMock('Drupal\block\BlockInterface');
       $block->expects($this->atLeastOnce())
         ->method('getPlugin')
         ->willReturn($block_config[1] ? $main_content_block_plugin : ($block_config[2] ? $messages_block_plugin : $block_plugin));
+      $block->expects($this->atLeastOnce())
+        ->method('access')
+        ->willReturn($access_result);
       $blocks[$block_config[0]][$block_id] = $block;
     }