Fix tests

Author: mdubus

src/lib/DocsSearchBar.js

@@ -89,9 +89,10 @@ class DocsSearchBar {
       this.autocompleteOptions.cssClasses.prefix || 'dsb';
     this.autocompleteOptions.cssClasses.root =
       this.autocompleteOptions.cssClasses.root || 'meilisearch-autocomplete';
-    this.autocompleteOptions.keyboardShortcuts = this.parseHotkeysAutocompleteOptions(
-      this.autocompleteOptions.keyboardShortcuts
-    ) || ['s', 191];
+    this.autocompleteOptions.keyboardShortcuts =
+      this.parseHotkeysAutocompleteOptions(
+        this.autocompleteOptions.keyboardShortcuts
+      ) || ['s', 191];
 
     this.isSimpleLayout = layout === 'simple';
     this.enableDarkMode = enableDarkMode;
@@ -100,10 +101,12 @@ class DocsSearchBar {
       window.matchMedia &&
       window.matchMedia('(prefers-color-scheme: dark)').matches;
     const searchbox = document.querySelector('.docs-searchbar');
-    if (this.enableDarkMode && isSystemInDarkMode) {
-      searchbox.setAttribute('data-ds-theme', 'dark')
-    } else {
-      searchbox.setAttribute('data-ds-theme', 'ligh')
+    if (searchbox) {
+      if (this.enableDarkMode && isSystemInDarkMode) {
+        searchbox.setAttribute('data-ds-theme', 'dark');
+      } else {
+        searchbox.setAttribute('data-ds-theme', 'ligh');
+      }
     }
 
     this.client = new MeiliSearch({
@@ -182,7 +185,7 @@ class DocsSearchBar {
       throw new Error(
         `Error: "enableDarkMode" must be of type: boolean. Found type: ${typeof args.inputSelector}`
       );
-    } 
+    }
   }
 
   static injectSearchBox(input) {