test(item-sliding): re-enable flaky tests (#28192)

Issue number: internal

---------

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issue. -->

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## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Some of the tests for `item-sliding` were being skipped due to
flakiness.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- Updated the tests to use the stable function, `dragElementBy` to
handle gestures, removing the gesture flakiness.
- Separated the basic test to lessen the gesture complexity else it
becomes flaky since it can't handle opening and closing and opening in
the same test.
- Tests are now checking all modes and all directions.
- Updated a utils function with a warning regarding an open issue with
RTL.


## Does this introduce a breaking change?

- [ ] Yes
- [x] No

<!-- If this introduces a breaking change, please describe the impact
and migration path for existing applications below. -->


## Other information

<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->

N/A

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Co-authored-by: ionitron <[email protected]>
Co-authored-by: Brandy Carney <[email protected]>

Author: 3 people

core/src/components/item-sliding/test/basic/item-sliding.e2e.ts

@@ -1,18 +1,53 @@
 import { expect } from '@playwright/test';
 import { configs, dragElementBy, test } from '@utils/test/playwright';
 
-import { testSlidingItem } from '../test.utils';
-
 /**
- * item-sliding doesn't have mode-specific styling
+ * item-sliding doesn't have mode-specific styling,
+ * but the child components, item-options and item-option, do.
+ *
+ * It is important to test all modes to ensure that the
+ * child components are being rendered correctly.
  */
-configs({ modes: ['md'] }).forEach(({ title, screenshot, config }) => {
+configs().forEach(({ title, screenshot, config }) => {
   test.describe(title('item-sliding: basic'), () => {
-    test.fixme('should not have visual regressions', async ({ page }) => {
+    test.beforeEach(async ({ page }) => {
       await page.goto(`/src/components/item-sliding/test/basic`, config);
+    });
+    test.describe('start options', () => {
+      test('should not have visual regressions', async ({ page }) => {
+        const item = page.locator('#item2');
+
+        /**
+         * Negative dragByX value to drag element from the right to the left
+         * to reveal the options on the right side.
+         * Positive dragByX value to drag element from the left to the right
+         * to reveal the options on the left side.
+         */
+        const dragByX = config.direction === 'rtl' ? -150 : 150;
+
+        await dragElementBy(item, page, dragByX);
+        await page.waitForChanges();
+
+        await expect(item).toHaveScreenshot(screenshot('item-sliding-start'));
+      });
+    });
+
+    test.describe('end options', () => {
+      test('should not have visual regressions', async ({ page }) => {
+        const item = page.locator('#item2');
+
+        /**
+         * Negative dragByX value to drag element from the right to the left
+         * to reveal the options on the right side.
+         * Positive dragByX value to drag element from the left to the right
+         * to reveal the options on the left side.
+         */
+        const dragByX = config.direction === 'rtl' ? 150 : -150;
+
+        await dragElementBy(item, page, dragByX);
 
-      await testSlidingItem(page, 'item2', 'start', screenshot, true);
-      await testSlidingItem(page, 'item2', 'end', screenshot);
+        await expect(item).toHaveScreenshot(screenshot('item-sliding-end'));
+      });
     });
   });
 });