add RangeSlider test

Author: OwenMcDonnell

sdk/python/packages/flet/integration_tests/controls/golden/macos/range_slider/default.png

@@ -33,7 +33,7 @@ async def test_radio(flet_app: ftt.FletTestApp, request):
         ),
     )
 
-    # green chosen
+    # two chosen
     await flet_app.tester.tap(await flet_app.tester.find_by_text("Two"))
     await flet_app.tester.pump_and_settle()
     flet_app.assert_screenshot(
@@ -43,7 +43,7 @@ async def test_radio(flet_app: ftt.FletTestApp, request):
         ),
     )
 
-    # blue chosen
+    # three chosen
     await flet_app.tester.tap(await flet_app.tester.find_by_text("Three"))
     await flet_app.tester.pump_and_settle()
     flet_app.assert_screenshot(

sdk/python/packages/flet/integration_tests/controls/golden/macos/range_slider/slider_move.png

@@ -0,0 +1,58 @@
+import pytest
+
+import flet as ft
+import flet.testing as ftt
+
+
+@pytest.mark.asyncio(loop_scope="module")
+async def test_range_slider(flet_app: ftt.FletTestApp, request):
+    rs = ft.RangeSlider(
+        min=0,
+        max=50,
+        start_value=0,
+        divisions=10,
+        end_value=50,
+        inactive_color=ft.Colors.GREEN_300,
+        active_color=ft.Colors.GREEN_700,
+        overlay_color=ft.Colors.GREEN_100,
+        label="{value}%",
+        key="rs",
+    )
+    c = ft.Container(content=rs, padding=ft.padding.only(top=40))
+
+    flet_app.page.enable_screenshots = True
+    flet_app.page.window.width = 400
+    flet_app.page.window.height = 600
+    flet_app.page.controls = [c]
+    flet_app.page.update()
+    await flet_app.tester.pump_and_settle()
+
+    # default
+    flet_app.assert_screenshot(
+        "default",
+        await flet_app.page.take_screenshot(
+            pixel_ratio=flet_app.screenshots_pixel_ratio
+        ),
+    )
+
+    # move slider
+    rs.end_value = 20
+    rs.start_value = 10
+    flet_app.page.update()
+    await flet_app.tester.pump_and_settle()
+    flet_app.assert_screenshot(
+        "slider_move",
+        await flet_app.page.take_screenshot(
+            pixel_ratio=flet_app.screenshots_pixel_ratio
+        ),
+    )
+
+    # tap
+    await flet_app.tester.tap(await flet_app.tester.find_by_key("rs"))
+    await flet_app.tester.pump_and_settle()
+    flet_app.assert_screenshot(
+        "tap",
+        await flet_app.page.take_screenshot(
+            pixel_ratio=flet_app.screenshots_pixel_ratio
+        ),
+    )