Add and update DateRangePicker integration tests

Updated the 'basic' DateRangePicker test and golden image, and added a new 'properties1' test with corresponding screenshot. The new test covers various DateRangePicker properties to improve test coverage and reliability.

Author: InesaFitsner

sdk/python/packages/flet/integration_tests/controls/golden/macos/date_range_picker/basic.png

@@ -1,16 +1,26 @@
 import datetime
 
 import pytest
+import pytest_asyncio
 
 import flet as ft
 import flet.testing as ftt
 
 
-@pytest.mark.asyncio(loop_scope="module")
+# Create a new flet_app instance for each test method
+@pytest_asyncio.fixture(scope="function", autouse=True)
+def flet_app(flet_app_function):
+    return flet_app_function
+
+
+@pytest.mark.asyncio(loop_scope="function")
 async def test_basic(flet_app: ftt.FletTestApp, request):
     dp = ft.DateRangePicker(
         start_value=datetime.datetime(year=2000, month=10, day=1),
         end_value=datetime.datetime(year=2000, month=10, day=15),
+        first_date=datetime.datetime(year=2000, month=10, day=1),
+        last_date=datetime.datetime(year=2000, month=11, day=15),
+        current_date=datetime.datetime(year=2000, month=10, day=16),
     )
     flet_app.page.enable_screenshots = True
     flet_app.page.window.width = 400
@@ -25,3 +35,44 @@ async def test_basic(flet_app: ftt.FletTestApp, request):
             pixel_ratio=flet_app.screenshots_pixel_ratio
         ),
     )
+
+
+@pytest.mark.asyncio(loop_scope="function")
+async def test_properties1(flet_app: ftt.FletTestApp, request):
+    dp = ft.DateRangePicker(
+        start_value=datetime.datetime(year=2000, month=10, day=7),
+        end_value=datetime.datetime(year=2000, month=10, day=15),
+        first_date=datetime.datetime(year=2000, month=10, day=1),
+        last_date=datetime.datetime(year=2000, month=11, day=15),
+        current_date=datetime.datetime(year=2000, month=10, day=16),
+        switch_to_calendar_icon=ft.Icons.BABY_CHANGING_STATION,
+        switch_to_input_icon=ft.Icons.ACCESS_ALARM,
+        save_text="Custom save text",
+        error_invalid_range_text="Invalid range custom text",
+        help_text="Custom help text",
+        cancel_text="Custom cancel text",
+        confirm_text="Custom confirm text",
+        error_format_text="Custom error format text",
+        error_invalid_text="Custom error invalid text",
+        field_end_hint_text="Custom end hint text",
+        field_start_hint_text="Custom start hint text",
+        field_end_label_text="Custom end label text",
+        field_start_label_text="Custom start label text",
+        modal=False,
+        barrier_color=ft.Colors.RED,
+        keyboard_type=ft.KeyboardType.EMAIL,
+        date_picker_entry_mode=ft.DatePickerEntryMode.CALENDAR,
+    )
+    flet_app.page.enable_screenshots = True
+    flet_app.page.window.width = 400
+    flet_app.page.window.height = 600
+    flet_app.page.show_dialog(dp)
+    flet_app.page.update()
+    await flet_app.tester.pump_and_settle()
+
+    flet_app.assert_screenshot(
+        "properties1",
+        await flet_app.page.take_screenshot(
+            pixel_ratio=flet_app.screenshots_pixel_ratio
+        ),
+    )