[Joy] Add functional Switch component

docs/pages/experiments/joy/switch.tsx

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+import * as React from 'react';
+// @ts-ignore
+import { jsx as _jsx } from 'react/jsx-runtime';
+import Box from '@mui/joy/Box';
+import Button from '@mui/joy/Button';
+import Switch from '@mui/joy/Switch';
+import {
+  CssVarsProvider,
+  styled,
+  useColorScheme,
+  ColorPaletteProp,
+  TypographySystem,
+  FontSize,
+} from '@mui/joy/styles';
+
+export const SvgIcon = styled('svg', {
+  shouldForwardProp: (prop) => prop !== 'fontSize' && prop !== 'sx',
+})<{
+  fontSize: keyof FontSize | 'inherit';
+}>(({ theme, fontSize }) => ({
+  userSelect: 'none',
+  width: '1em',
+  height: '1em',
+  display: 'inline-block',
+  fill: 'currentColor',
+  flexShrink: 0,
+  ...(fontSize && {
+    fontSize: fontSize === 'inherit' ? 'inherit' : theme.vars.fontSize[fontSize],
+  }),
+}));
+
+function createSvgIcon(path: any, displayName: any, initialProps?: any) {
+  const Component = (props: any, ref: any) =>
+    (
+      <SvgIcon
+        data-testid={`${displayName}Icon`}
+        ref={ref}
+        viewBox="0 0 24 24"
+        fontSize="xl"
+        {...initialProps}
+        {...props}
+        sx={{ ...initialProps?.sx, ...props.sx }}
+      >
+        {path}
+      </SvgIcon>
+    ) as unknown as typeof SvgIcon;
+
+  // @ts-ignore
+  return React.memo(React.forwardRef(Component));
+}
+
+const Typography = styled('p', {
+  shouldForwardProp: (prop) => prop !== 'color' && prop !== 'level' && prop !== 'sx',
+})<{ color?: ColorPaletteProp; level?: keyof TypographySystem }>(
+  ({ theme, level = 'body1', color }) => [
+    { margin: 0 },
+    theme.typography[level],
+    color && { color: `var(--joy-palette-${color}-textColor)` },
+  ],
+);
+
+export const Moon = createSvgIcon(
+  _jsx('path', {
+    d: 'M12 3c-4.97 0-9 4.03-9 9s4.03 9 9 9 9-4.03 9-9c0-.46-.04-.92-.1-1.36-.98 1.37-2.58 2.26-4.4 2.26-2.98 0-5.4-2.42-5.4-5.4 0-1.81.89-3.42 2.26-4.4-.44-.06-.9-.1-1.36-.1z',
+  }),
+  'DarkMode',
+);
+
+export const Sun = createSvgIcon(
+  _jsx('path', {
+    d: 'M12 7c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5zM2 13h2c.55 0 1-.45 1-1s-.45-1-1-1H2c-.55 0-1 .45-1 1s.45 1 1 1zm18 0h2c.55 0 1-.45 1-1s-.45-1-1-1h-2c-.55 0-1 .45-1 1s.45 1 1 1zM11 2v2c0 .55.45 1 1 1s1-.45 1-1V2c0-.55-.45-1-1-1s-1 .45-1 1zm0 18v2c0 .55.45 1 1 1s1-.45 1-1v-2c0-.55-.45-1-1-1s-1 .45-1 1zM5.99 4.58c-.39-.39-1.03-.39-1.41 0-.39.39-.39 1.03 0 1.41l1.06 1.06c.39.39 1.03.39 1.41 0s.39-1.03 0-1.41L5.99 4.58zm12.37 12.37c-.39-.39-1.03-.39-1.41 0-.39.39-.39 1.03 0 1.41l1.06 1.06c.39.39 1.03.39 1.41 0 .39-.39.39-1.03 0-1.41l-1.06-1.06zm1.06-10.96c.39-.39.39-1.03 0-1.41-.39-.39-1.03-.39-1.41 0l-1.06 1.06c-.39.39-.39 1.03 0 1.41s1.03.39 1.41 0l1.06-1.06zM7.05 18.36c.39-.39.39-1.03 0-1.41-.39-.39-1.03-.39-1.41 0l-1.06 1.06c-.39.39-.39 1.03 0 1.41s1.03.39 1.41 0l1.06-1.06z',
+  }),
+  'LightMode',
+);
+
+const ColorSchemePicker = () => {
+  const { mode, setMode } = useColorScheme();
+  const [mounted, setMounted] = React.useState(false);
+  React.useEffect(() => {
+    setMounted(true);
+  }, []);
+  if (!mounted) {
+    return null;
+  }
+
+  return (
+    <Button
+      variant="outlined"
+      onClick={() => {
+        if (mode === 'light') {
+          setMode('dark');
+        } else {
+          setMode('light');
+        }
+      }}
+      sx={{ minWidth: 40, p: '0.25rem' }}
+    >
+      {mode === 'light' ? <Moon /> : <Sun />}
+    </Button>
+  );
+};
+
+const props = {
+  size: ['sm', 'md', 'lg'],
+  color: ['primary', 'danger', 'info', 'success', 'warning'],
+} as const;
+
+export default function JoySwitch() {
+  return (
+    <CssVarsProvider>
+      <Box sx={{ py: 5, maxWidth: { md: 1152, xl: 1536 }, mx: 'auto' }}>
+        <Box sx={{ px: 3 }}>
+          <ColorSchemePicker />
+        </Box>
+        <Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 5 }}>
+          {Object.entries(props).map(([propName, propValue]) => (
+            <Box
+              key={propName}
+              sx={{ display: 'flex', flexDirection: 'column', gap: 5, p: 2, alignItems: 'center' }}
+            >
+              <Typography sx={{ textDecoration: 'underline' }}>{propName}</Typography>
+              {propValue.map((value) => (
+                <Box>
+                  <Switch defaultChecked {...{ [propName]: value }} />
+                  {value && (
+                    <Typography level="body3" sx={{ textAlign: 'center', mt: '4px' }}>
+                      {value}
+                    </Typography>
+                  )}
+                </Box>
+              ))}
+            </Box>
+          ))}
+        </Box>
+      </Box>
+    </CssVarsProvider>
+  );
+}

packages/mui-joy/src/Switch/Switch.spec.tsx

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+import * as React from 'react';
+import Switch from '@mui/joy/Switch';
+
+<Switch />;
+
+<Switch component="div" />;
+
+<Switch data-testid="any" />;
+
+<Switch defaultChecked />;
+
+<Switch checked />;
+
+<Switch
+  onChange={(event) => {
+    const checked = event.target.checked;
+  }}
+/>;
+
+<Switch color="primary" />;
+<Switch color="danger" />;
+<Switch color="info" />;
+<Switch color="success" />;
+<Switch color="warning" />;
+// @ts-expect-error there is no neutral switch
+<Switch color="neutral" />;
+
+<Switch size="sm" />;
+<Switch size="md" />;
+<Switch size="lg" />;
+
+<Switch
+  sx={{
+    '--joy-Switch-track-radius': '8px',
+    '--joy-Switch-track-width': '48px',
+    '--joy-Switch-track-height': '24px',
+    '--joy-Switch-thumb-size': '16px',
+  }}
+/>;

packages/mui-joy/src/Switch/Switch.test.js

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+import * as React from 'react';
+import { expect } from 'chai';
+import { describeConformance, act, createRenderer, fireEvent } from 'test/utils';
+import Switch, { switchClasses as classes } from '@mui/joy/Switch';
+import { ThemeProvider } from '@mui/joy/styles';
+
+describe('<Switch />', () => {
+  const { render } = createRenderer();
+
+  describeConformance(<Switch />, () => ({
+    classes,
+    render,
+    ThemeProvider,
+    muiName: 'MuiSwitch',
+    testDeepOverrides: [
+      { slotName: 'track', slotClassName: classes.track },
+      { slotName: 'input', slotClassName: classes.input },
+    ],
+    refInstanceof: window.HTMLSpanElement,
+    skip: [
+      'componentProp',
+      'componentsProp',
+      'classesRoot',
+      'propsSpread',
+      'themeDefaultProps',
+      'themeVariants',
+    ],
+  }));
+
+  it('should have the classes required for Switch', () => {
+    expect(classes).to.include.all.keys(['root', 'checked', 'disabled']);
+  });
+
+  it('should render the track as the first child of the Switch', () => {
+    const {
+      container: { firstChild: root },
+    } = render(<Switch />);
+
+    expect(root.childNodes[0]).to.have.property('tagName', 'SPAN');
+    expect(root.childNodes[0]).to.have.class(classes.track);
+  });
+
+  it('renders a `role="checkbox"` with the Unchecked state by default', () => {
+    const { getByRole } = render(<Switch />);
+
+    expect(getByRole('checkbox')).to.have.property('checked', false);
+  });
+
+  it('renders a checkbox with the Checked state when checked', () => {
+    const { getByRole } = render(<Switch defaultChecked />);
+
+    expect(getByRole('checkbox')).to.have.property('checked', true);
+  });
+
+  specify('the switch can be disabled', () => {
+    const { getByRole } = render(<Switch disabled />);
+
+    expect(getByRole('checkbox')).to.have.property('disabled', true);
+  });
+
+  specify('the switch can be readonly', () => {
+    const { getByRole } = render(<Switch readOnly />);
+
+    expect(getByRole('checkbox')).to.have.property('readOnly', true);
+  });
+
+  specify('the Checked state changes after change events', () => {
+    const { getByRole } = render(<Switch defaultChecked />);
+
+    // how a user would trigger it
+    act(() => {
+      getByRole('checkbox').click();
+      fireEvent.change(getByRole('checkbox'), { target: { checked: '' } });
+    });
+
+    expect(getByRole('checkbox')).to.have.property('checked', false);
+  });
+});