diff --git a/core/modules/block/src/Tests/BlockUiTest.php b/core/modules/block/src/Tests/BlockUiTest.php
index aba4ba1..0a8f867 100644
--- a/core/modules/block/src/Tests/BlockUiTest.php
+++ b/core/modules/block/src/Tests/BlockUiTest.php
@@ -165,12 +165,30 @@ public function testContextAwareBlocks() {
 
     $this->drupalGet('admin/structure/block');
     $elements = $this->xpath('//details[@id="edit-category-block-test"]//ul[contains(@class, :ul_class)]/li[contains(@class, :li_class)]/a[contains(@href, :href) and text()=:text]', $arguments);
-    $this->assertTrue(empty($elements), 'The context-aware test block does not appear.');
+    $this->assertTrue(!empty($elements), 'The context-aware test block appears.');
     $definition = \Drupal::service('plugin.manager.block')->getDefinition('test_context_aware');
     $this->assertTrue(!empty($definition), 'The context-aware test block exists.');
   }
 
   /**
+   * Tests the behavior of unsatisfied context-aware blocks.
+   */
+  public function testContextAwareUnsatisfiedBlocks() {
+    $arguments = array(
+      ':ul_class' => 'block-list',
+      ':li_class' => 'test-context-aware-unsatisfied',
+      ':href' => 'admin/structure/block/add/test_context_aware_unsatisfied/classy',
+      ':text' => 'Test context-aware block',
+    );
+
+    $this->drupalGet('admin/structure/block');
+    $elements = $this->xpath('//details[@id="edit-category-block-test"]//ul[contains(@class, :ul_class)]/li[contains(@class, :li_class)]/a[contains(@href, :href) and text()=:text]', $arguments);
+    $this->assertTrue(empty($elements), 'The context-aware test block does not appear.');
+    $definition = \Drupal::service('plugin.manager.block')->getDefinition('test_context_aware_unsatisfied');
+    $this->assertTrue(!empty($definition), 'The context-aware test block exists.');
+  }
+
+  /**
    * Tests that the BlockForm populates machine name correctly.
    */
   public function testMachineNameSuggestion() {
diff --git a/core/modules/block/tests/modules/block_test/src/Plugin/Block/TestContextAwareUnsatisfiedBlock.php b/core/modules/block/tests/modules/block_test/src/Plugin/Block/TestContextAwareUnsatisfiedBlock.php
new file mode 100644
index 0000000..7232e74
--- /dev/null
+++ b/core/modules/block/tests/modules/block_test/src/Plugin/Block/TestContextAwareUnsatisfiedBlock.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\block_test\Plugin\Block\TestContextAwareBlock.
+ */
+
+namespace Drupal\block_test\Plugin\Block;
+
+use Drupal\Core\Block\BlockBase;
+
+/**
+ * Provides a context-aware block.
+ *
+ * @Block(
+ *   id = "test_context_aware_unsatisfied",
+ *   admin_label = @Translation("Test context-aware unsatisfied block"),
+ *   context = {
+ *     "user" = @ContextDefinition("entity:foobar")
+ *   }
+ * )
+ */
+class TestContextAwareUnsatisfiedBlock extends BlockBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    return [
+      '#markup' => 'test',
+    ];
+  }
+
+}