diff --git a/schema/facets_year_range.schema.yml b/schema/facets_year_range.schema.yml
new file mode 100644
index 0000000..31486bb
--- /dev/null
+++ b/schema/facets_year_range.schema.yml
@@ -0,0 +1,5 @@
+# Config schema for date range, you can find the implementation in
+# Drupal\facets_year_range\Plugin\facets\widget\DateRangeWidget.
+facet.widget.config.year_range:
+  type: facet.widget.default_config
+  label: 'Year Range widget configuration'
diff --git a/tests/src/Functional/YearRangeIntegrationTest.php b/tests/src/Functional/YearRangeIntegrationTest.php
index b764edf..3304c3f 100644
--- a/tests/src/Functional/YearRangeIntegrationTest.php
+++ b/tests/src/Functional/YearRangeIntegrationTest.php
@@ -97,31 +97,31 @@ public function testSliderWidget(): void {
       'widget' => 'year_range',
       'facet_settings[year_range][status]' => TRUE,
     ], 'Save');
-
+    
     $this->assertSession()->checkboxChecked('edit-facet-settings-year-range-status');
 
     $this->drupalGet('search-api-test-fulltext');
     $this->assertFacetBlocksAppear();
-    $this->assertSession()->pageTextContains('Displaying 15 search results');
+    $this->assertSession()->pageTextContainsOnce('Displaying 15 search results');
 
     $url = Url::fromUserInput('/search-api-test-fulltext', ['query' => ['f[0]' => 'created:(min:1614384000,max:1620864000)']]);
     $this->drupalGet($url->setAbsolute()->toString());
 
-    $this->assertSession()->pageTextContains('foo date 4');
-    $this->assertSession()->pageTextContains('foo date 1');
-    $this->assertSession()->pageTextContains('foo date 2');
-    $this->assertSession()->pageTextContains('foo date 3');
-    $this->assertSession()->pageTextContains('Displaying 4 search results');
+    $this->assertSession()->pageTextContainsOnce('foo date 4');
+    $this->assertSession()->pageTextContainsOnce('foo date 1');
+    $this->assertSession()->pageTextContainsOnce('foo date 2');
+    $this->assertSession()->pageTextContainsOnce('foo date 3');
+    $this->assertSession()->pageTextContainsOnce('Displaying 4 search results');
 
     $url = Url::fromUserInput('/search-api-test-fulltext', ['query' => ['f[0]' => 'daterange:(min:,max:1641225702)']]);
     $this->drupalGet($url->setAbsolute()->toString());
 
-    $this->assertSession()->pageTextContains('Displaying 15 search results');
+    $this->assertSession()->pageTextContainsOnce('Displaying 15 search results');
 
     $url = Url::fromUserInput('/search-api-test-fulltext', ['query' => ['f[0]' => 'daterange:(min:,max:)']]);
     $this->drupalGet($url->setAbsolute()->toString());
 
-    $this->assertSession()->pageTextContains('Displaying 15 search results');
+    $this->assertSession()->pageTextContainsOnce('Displaying 15 search results');
   }
 
 }