Migrate set_page_config e2e test to playwright (streamlit#9308)

## Describe your changes

Migrates the `set_page_config` e2e test from cypress to playwright and
extend test coverage to additional parameters.

## Testing Plan

- Migrated e2e test

---

**Contribution License Agreement**

By submitting this pull request you agree that all contributions to this
project are made under the Apache 2.0 license.

e2e_playwright/shared/app_utils.py

@@ -250,7 +250,7 @@ def expect_markdown(
 
 def expect_exception(
     locator: Locator | Page,
-    expected_message: str | Pattern[str],
+    expected_message: str | Pattern[str] | None = None,
 ) -> None:
     """Expect an exception to be displayed in the app.
 
@@ -260,15 +260,24 @@ def expect_exception(
     locator : Locator
         The locator to search for the exception element.
 
-    expected_message : str or Pattern[str]
+    expected_message : str or Pattern[str] or None
         The expected message to be displayed in the exception.
     """
-    exception_el = locator.get_by_test_id("stException").filter(
-        has_text=expected_message
-    )
+
+    if expected_message is None:
+        exception_el = locator.get_by_test_id("stException")
+    else:
+        exception_el = locator.get_by_test_id("stException").filter(
+            has_text=expected_message
+        )
     expect(exception_el).to_be_visible()
 
 
+def expect_no_exception(locator: Locator | Page):
+    exception_el = locator.get_by_test_id("stException")
+    expect(exception_el).not_to_be_attached()
+
+
 def expect_warning(
     locator: Locator | Page,
     expected_message: str | Pattern[str],

e2e_playwright/st_set_page_config.py

@@ -0,0 +1,119 @@
+# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022-2024)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+import streamlit as st
+
+# Construct test assets path relative to this script file to
+# allow its execution with different working directories.
+TEST_ASSETS_DIR = os.path.join(
+    os.path.dirname(os.path.abspath(__file__)), "test_assets"
+)
+
+st.sidebar.button("Sidebar!")
+st.markdown("Main!")
+with st.expander("Expander in main"):
+    st.write("Text in expander")
+
+
+def preceding_command_in_callback():
+    st.balloons()
+    st.set_page_config(page_title="Allows preceding command in callback")
+
+
+st.button("Preceding Command in Callback", on_click=preceding_command_in_callback)
+
+
+def collapsed_sidebar():
+    st.set_page_config(
+        page_title="Collapsed Sidebar", initial_sidebar_state="collapsed"
+    )
+
+
+st.button("Collapsed Sidebar", on_click=collapsed_sidebar)
+
+
+def expanded_sidebar():
+    st.set_page_config(page_title="Expanded Sidebar", initial_sidebar_state="expanded")
+
+
+st.button("Expanded Sidebar", on_click=expanded_sidebar)
+
+
+def wide_layout():
+    st.set_page_config(page_title="Wide Layout", layout="wide")
+
+
+st.button("Wide Layout", on_click=wide_layout)
+
+
+def centered_layout():
+    st.set_page_config(page_title="Centered Layout", layout="centered")
+
+
+st.button("Centered Layout", on_click=centered_layout)
+
+
+def double_set_page_config():
+    st.set_page_config(page_title="Page Config 1")
+    st.set_page_config(page_title="Page Config 2")
+
+
+st.button("Double Set Page Config", on_click=double_set_page_config)
+
+
+def page_config_with_emoji_shortcode():
+    st.set_page_config(
+        page_title="With Emoji Shortcode",
+        page_icon=":shark:",
+    )
+
+
+st.button("Page Config With Emoji Shortcode", on_click=page_config_with_emoji_shortcode)
+
+
+def page_config_with_emoji_symbol():
+    st.set_page_config(
+        page_title="With Emoji Symbol",
+        page_icon="🐙",
+    )
+
+
+st.button("Page Config With Emoji Symbol", on_click=page_config_with_emoji_symbol)
+
+
+def page_config_with_local_icon():
+    ICON_PATH = os.path.join(TEST_ASSETS_DIR, "favicon.ico")
+
+    st.set_page_config(
+        page_title="With Local Icon",
+        page_icon=ICON_PATH,
+    )
+
+
+st.button("Page Config With Local Icon", on_click=page_config_with_local_icon)
+
+
+def page_config_with_material_icon():
+    st.set_page_config(
+        page_title="With Material Icon",
+        page_icon=":material/thumb_up:",
+    )
+
+
+st.button("Page Config With Material Icon", on_click=page_config_with_material_icon)
+
+# The menu_items parameter is covered by the `main_menu.py` script
+# initial_sidebar_state = auto is covered by the `st_sidebar.py` script