WIP tests

packages/mui-base/src/Slider2/Root/SliderRoot.test.tsx

@@ -0,0 +1,199 @@
+import { expect } from 'chai';
+import * as React from 'react';
+import { spy, stub } from 'sinon';
+import { act, createRenderer, fireEvent, screen } from '@mui/internal-test-utils';
+import * as Slider from '@base_ui/react/Slider2';
+import { describeConformance } from '../../../test/describeConformance';
+
+type Touches = Array<Pick<Touch, 'identifier' | 'clientX' | 'clientY'>>;
+
+function createTouches(touches: Touches) {
+  return {
+    changedTouches: touches.map(
+      (touch) =>
+        new Touch({
+          target: document.body,
+          ...touch,
+        }),
+    ),
+  };
+}
+
+describe('<Slider.Root />', () => {
+  before(function beforeHook() {
+    if (typeof Touch === 'undefined') {
+      this.skip();
+    }
+
+    // PointerEvent not fully implemented in jsdom, causing
+    // fireEvent.pointer* to ignore options
+    // https://github.com/jsdom/jsdom/issues/2527
+    (window as any).PointerEvent = window.MouseEvent;
+  });
+
+  const { render } = createRenderer();
+
+  describeConformance(<Slider.Root defaultValue={50} />, () => ({
+    inheritComponent: 'div',
+    render,
+    refInstanceof: window.HTMLDivElement,
+  }));
+
+  it('renders a slider', () => {
+    render(
+      <Slider.Root defaultValue={30}>
+        <Slider.Output />
+        <Slider.Track>
+          <Slider.Thumb />
+        </Slider.Track>
+      </Slider.Root>,
+    );
+
+    expect(screen.getByRole('slider')).to.have.attribute('aria-valuenow', '30');
+  });
+
+  describe('ARIA attributes', () => {
+    it('it has the correct aria attributes', () => {
+      const { container, getByRole, getByTestId } = render(
+        <Slider.Root defaultValue={30} aria-labelledby="labelId" data-testid="root">
+          <Slider.Output />
+          <Slider.Track>
+            <Slider.Thumb />
+          </Slider.Track>
+        </Slider.Root>,
+      );
+
+      const root = getByTestId('root');
+      const slider = getByRole('slider');
+      const input = container.querySelector('input');
+
+      expect(root).not.to.have.attribute('aria-labelledby');
+
+      expect(slider).to.have.attribute('aria-valuenow', '30');
+      expect(slider).to.have.attribute('aria-valuemin', '0');
+      expect(slider).to.have.attribute('aria-valuemax', '100');
+      expect(slider).to.have.attribute('aria-orientation', 'horizontal');
+
+      expect(input).to.have.attribute('aria-labelledby', 'labelId');
+      expect(input).to.have.attribute('aria-valuenow', '30');
+
+      // TODO: aria-label should be somewhere
+    });
+  });
+
+  describe('prop: disabled', () => {});
+
+  describe('prop: marks', () => {
+    it('does not cause unknown-prop error', () => {
+      const marks = [
+        {
+          value: 33,
+        },
+      ];
+      expect(() => {
+        render(<Slider.Root marks={marks} />);
+      }).not.to.throw();
+    });
+  });
+
+  describe('prop: orientation', () => {
+    function VerticalSlider() {
+      return (
+        <Slider.Root orientation="vertical">
+          <Slider.Track>
+            <Slider.Thumb />
+          </Slider.Track>
+        </Slider.Root>
+      );
+    }
+
+    it('sets the orientation via ARIA', () => {
+      render(<VerticalSlider />);
+
+      const sliderRoot = screen.getByRole('slider');
+      expect(sliderRoot).to.have.attribute('aria-orientation', 'vertical');
+    });
+
+    it('does not set the orientation via appearance for WebKit browsers', function test() {
+      if (/jsdom/.test(window.navigator.userAgent) || !/WebKit/.test(window.navigator.userAgent)) {
+        this.skip();
+      }
+
+      render(<VerticalSlider />);
+
+      const slider = screen.getByRole('slider');
+
+      expect(slider).to.have.property('tagName', 'INPUT');
+      expect(slider).to.have.property('type', 'range');
+      // Only relevant if we implement `[role="slider"]` with `input[type="range"]`
+      // We're not setting this by default because it changes horizontal keyboard navigation in WebKit: https://bugs.chromium.org/p/chromium/issues/detail?id=1162640
+      expect(slider).not.toHaveComputedStyle({ webkitAppearance: 'slider-vertical' });
+    });
+  });
+
+  describe('prop: onValueChange', () => {
+    function TestSlider(props: { onValueChange: () => void }) {
+      return (
+        <Slider.Root defaultValue={50} {...props}>
+          <Slider.Track data-testid="track">
+            <Slider.Thumb data-testid="thumb" />
+          </Slider.Track>
+        </Slider.Root>
+      );
+    }
+
+    it('is called when clicking on the track', () => {
+      const handleValueChange = spy();
+      render(<TestSlider onValueChange={handleValueChange} />);
+
+      const sliderTrack = screen.getByTestId('track');
+
+      stub(sliderTrack, 'getBoundingClientRect').callsFake(() => ({
+        width: 100,
+        height: 10,
+        bottom: 10,
+        left: 0,
+        x: 0,
+        y: 0,
+        right: 0,
+        top: 0,
+        toJSON() {},
+      }));
+
+      fireEvent.pointerDown(sliderTrack, {
+        buttons: 1,
+        clientX: 41,
+        clientY: 5,
+      });
+
+      expect(handleValueChange.callCount).to.equal(1);
+    });
+
+    it('is not called when clicking on the thumb', () => {
+      const handleValueChange = spy();
+      render(<TestSlider onValueChange={handleValueChange} />);
+
+      const sliderTrack = screen.getByTestId('track');
+      const sliderThumb = screen.getByTestId('thumb');
+
+      stub(sliderTrack, 'getBoundingClientRect').callsFake(() => ({
+        width: 100,
+        height: 10,
+        bottom: 10,
+        left: 0,
+        x: 0,
+        y: 0,
+        right: 0,
+        top: 0,
+        toJSON() {},
+      }));
+
+      fireEvent.pointerDown(sliderThumb, {
+        buttons: 1,
+        clientX: 51,
+      });
+
+      expect(handleValueChange.callCount).to.equal(0);
+    });
+  });
+});

packages/mui-base/src/Slider2/Root/SliderRoot.tsx

@@ -17,11 +17,13 @@ const SliderRoot = React.forwardRef(function SliderRoot(
   forwardedRef: React.ForwardedRef<HTMLDivElement>,
 ) {
   const {
+    'aria-labelledby': ariaLabelledby,
     className,
     defaultValue,
     disabled = false,
     render: renderProp,
     onValueChange,
+    orientation,
     value,
     ...otherProps
   } = props;
@@ -31,9 +33,11 @@ const SliderRoot = React.forwardRef(function SliderRoot(
   const mergedRef = useRenderPropForkRef(render, forwardedRef);
 
   const { getRootProps, ...slider } = useSliderRoot({
+    'aria-labelledby': ariaLabelledby,
     defaultValue,
     disabled,
     onValueChange,
+    orientation,
     rootRef: mergedRef,
     value,
     ...otherProps,

packages/mui-base/src/Slider2/SliderThumb/useSliderThumb.ts

@@ -102,6 +102,7 @@ export function useSliderThumb(parameters: UseSliderThumbParameters) {
         'aria-orientation': orientation,
         'aria-valuemax': scale(max),
         'aria-valuemin': scale(min),
+        'aria-valuenow': scale(thumbValue),
         disabled,
         name,
         id: compoundItemId,

packages/mui-base/src/Slider2/SliderTrack/SliderTrack.types.ts

@@ -2,3 +2,16 @@ import { BaseUIComponentProps } from '../../utils/BaseUI.types';
 import { SliderRootOwnerState } from '../Root/SliderRoot.types';
 
 export interface SliderTrackProps extends BaseUIComponentProps<'div', SliderRootOwnerState> {}
+
+export interface UseSliderTrackParameters {
+  /**
+   * The ref attached to the track of the Slider.
+   */
+  rootRef?: React.Ref<Element>;
+}
+
+export interface UseSliderTrackReturnValue {
+  getRootProps: (
+    externalProps?: React.ComponentPropsWithRef<'div'>,
+  ) => React.ComponentPropsWithRef<'div'>;
+}

packages/mui-base/src/Slider2/SliderTrack/useSliderTrack.ts

@@ -6,10 +6,11 @@ import { useSliderContext } from '../Root/SliderContext';
 import { useEventCallback } from '../../utils/useEventCallback';
 import { roundValueToStep, valueToPercent } from '../utils';
 import { areValuesEqual, focusThumb, trackFinger } from '../Root/useSliderRoot';
+import { UseSliderTrackParameters, UseSliderTrackReturnValue } from './SliderTrack.types';
 
 const INTENTIONAL_DRAG_COUNT_THRESHOLD = 2;
 
-export function useSliderTrack(parameters: any) {
+export function useSliderTrack(parameters: UseSliderTrackParameters): UseSliderTrackReturnValue {
   const { rootRef: externalRef } = parameters;
 
   const trackRef = React.useRef<HTMLElement>(null);