Initial commit for clearing input on SelectPanel

.changeset/sweet-donkeys-allow.md

@@ -0,0 +1,5 @@
+---
+'@primer/view-components': patch
+---
+
+Clear input on SelectPanel when dialog closed

app/components/primer/alpha/select_panel_element.ts

@@ -935,6 +935,8 @@ export class SelectPanelElement extends HTMLElement {
   }
 
   hide() {
+    // When we close the dialog, clear the filter input
+    this.filterInputTextField.value = ''
     this.dialog.close()
   }
 

test/system/alpha/select_panel_test.rb

@@ -435,6 +435,24 @@ def test_single_selected_item_cannot_be_unchecked
       refute_selector "[aria-checked]", visible: :hidden
     end
 
+    def test_single_select_clears_input_on_close
+      visit_preview(:single_select)
+
+      click_on_invoker_button
+
+      filter_results(query: "it")
+
+      # keyboard.type(:enter)
+      click_on "Item 1"
+
+      assert_selector "[aria-selected=true]", text: "Item 1", visible: :hidden
+
+      click_on_invoker_button
+
+      # Check that the input value is empty
+      assert_selector "select-panel input", text: ""
+    end
+
     def test_single_select_disabled_item_cannot_be_checked
       visit_preview(:single_select)