add SearchBar test

Author: OwenMcDonnell

sdk/python/packages/flet/integration_tests/controls/golden/macos/searchbar/empty.png

@@ -18,7 +18,7 @@ async def test_range_slider(flet_app: ftt.FletTestApp, request):
         label="{value}%",
         key="rs",
     )
-    c = ft.Container(content=rs, padding=ft.padding.only(top=40))
+    c = ft.Container(content=rs, padding=ft.Padding.only(top=40))
 
     flet_app.page.enable_screenshots = True
     flet_app.page.window.width = 400

sdk/python/packages/flet/integration_tests/controls/golden/macos/searchbar/list.png

@@ -0,0 +1,43 @@
+import pytest
+
+import flet as ft
+import flet.testing as ftt
+
+
+@pytest.mark.asyncio(loop_scope="module")
+async def test_searchbar(flet_app: ftt.FletTestApp, request):
+    sb = ft.SearchBar(
+        key="sb",
+        view_elevation=4,
+        divider_color=ft.Colors.AMBER,
+        bar_hint_text="Search colors...",
+        view_hint_text="Choose a color from the suggestions...",
+        controls=[ft.ListTile(title=ft.Text(f"Color {i}")) for i in range(10)],
+    )
+    c = ft.Container(
+        padding=ft.Padding.only(top=40),
+        content=sb,
+    )
+    flet_app.page.enable_screenshots = True
+    flet_app.page.window.width = 400
+    flet_app.page.window.height = 600
+    flet_app.page.controls = [sb]
+    flet_app.page.update()
+    await flet_app.tester.pump_and_settle()
+
+    await flet_app.tester.pump_and_settle()
+    flet_app.assert_screenshot(
+        "empty",
+        await flet_app.page.take_screenshot(
+            pixel_ratio=flet_app.screenshots_pixel_ratio
+        ),
+    )
+
+    await sb.open_view()
+    await flet_app.tester.pump_and_settle()
+    flet_app.assert_screenshot(
+        "list",
+        await flet_app.page.take_screenshot(
+            pixel_ratio=flet_app.screenshots_pixel_ratio
+        ),
+    )