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< index e22ecd8270..32d4808ec9 100644
---
> index b984783a9d..634163d2e7 100644
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< 
---
>  
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< 
---
>  
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< index ae798fd1c3..bdc9567b1f 100644
---
> index 0cf5548b9c..d023cb0ae8 100644
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< @@ -3,6 +3,7 @@
<  namespace Drupal\Tests\config_translation\Functional;
< 
<  use Drupal\block_content\Entity\BlockContentType;
< +use Drupal\Core\Entity\Entity\EntityFormDisplay;
<  use Drupal\field\Entity\FieldConfig;
<  use Drupal\field\Entity\FieldStorageConfig;
<  use Drupal\language\Entity\ConfigurableLanguage;
< @@ -504,4 +505,20 @@ public function testTranslateOperationInListUi() {
<      $this->doSettingsPageTest('admin/config/people/accounts');
---
> @@ -479,6 +479,46 @@ public function doSettingsPageTest($link) {
>      $this->assertSession()->responseContains('<th>Language</th>');
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< 
---
>  
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< +   * Asserts that missing default display does not break the form display page.
---
> +   * Test entity form translation operation.
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< +  public function testDisplayTranslation() {
< +    $this->drupalLogin($this->rootUser);
< +    // Setup vocabulary.
< +    Vocabulary::create([
< +      'vid' => 'tags',
< +      'name' => 'Tags',
< +    ])->save();
< +    // Assert there is no default form display.
< +    $this->assertNull(EntityFormDisplay::load('taxonomy_term.tags.default'));
< +    $this->drupalGet('admin/structure/taxonomy/manage/tags/overview/form-display');
---
> +  public function doEntityFormTest() {
> +    $content_type = $this->drupalCreateContentType([
> +      'type' => mb_strtolower($this->randomMachineName(16)),
> +      'name' => $this->randomMachineName(),
> +    ]);
> +
> +    $this->drupalGet('admin/config/regional/config-translation');
> +    $this->assertSession()->linkByHrefExists('admin/config/regional/config-translation/node_form_display');
> +
> +    $this->drupalGet('admin/config/regional/config-translation/node_form_display');
> +    $this->assertSession()->statusCodeEquals(200);
> +    $this->assertSession()->linkByHrefExists('admin/structure/types/manage/' . $content_type->id() . '/form-display/default/translate');
> +
> +    $this->drupalGet('admin/structure/types/manage/' . $content_type->id() . '/form-display/default/translate');
> +    $this->assertSession()->statusCodeEquals(200);
> +  }
> +
> +  /**
> +   * Test entity view display translation operation.
> +   */
> +  public function doViewDisplayTest() {
> +    $content_type = $this->drupalCreateContentType([
> +      'type' => mb_strtolower($this->randomMachineName(16)),
> +      'name' => $this->randomMachineName(),
> +    ]);
> +
> +    $this->drupalGet('admin/config/regional/config-translation');
> +    $this->assertSession()->linkByHrefExists('admin/config/regional/config-translation/node_view_display');
> +
> +    $this->drupalGet('admin/config/regional/config-translation/node_view_display');
> +    $this->assertSession()->statusCodeEquals(200);
> +    $this->assertSession()->linkByHrefExists('/admin/structure/types/manage/' . $content_type->id() . '/display/default/translate');
> +
> +    $this->drupalGet('admin/structure/types/manage/' . $content_type->id() . '/display/default/translate');
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<  }
---
>    /**
>     * Tests if translate link is added to operations in all configuration lists.
>     */
> @@ -498,6 +538,8 @@ public function testTranslateOperationInListUi() {
>      $this->doResponsiveImageListTest();
>      $this->doDateFormatListTest();
>      $this->doFieldListTest();
> +    $this->doEntityFormTest();
> +    $this->doViewDisplayTest();
>  
>      // Views is tested in Drupal\config_translation\Tests\ConfigTranslationViewListUiTest
>