Add a few more Switch tests and the accessibility-assertions file

jest.config.cjs

@@ -4,6 +4,9 @@ module.exports = {
     '^.+\\.js$': 'babel-jest',
     '^.+\\.ts$': 'ts-jest',
   },
+  setupFilesAfterEnv: [
+    '@testing-library/jest-dom/extend-expect',
+  ],
   testEnvironment: "jsdom",
   moduleFileExtensions: ['js', 'ts', 'svelte'],
   moduleNameMapper: {

src/lib/components/switch/switch.test.ts

@@ -1,6 +1,8 @@
 import { render } from "@testing-library/svelte";
 import TestRenderer from "../../test-utils/TestRenderer.svelte";
 import { Switch } from ".";
+import { assertSwitch, getSwitch, SwitchState } from "$lib/test-utils/accessibility-assertions";
+import Span from "$lib/internal/elements/Span.svelte";
 jest.mock('../../hooks/use-id')
 
 describe('Safe guards', () => {
@@ -13,3 +15,100 @@ describe('Safe guards', () => {
     });
   })
 })
+
+describe('Rendering', () => {
+  // TODO: handle these render prop (slot prop) tests
+
+  // it('should be possible to render an (on) Switch using a render prop', () => {
+  //   render(TestRenderer, {
+  //     <Switch checked={true} onChange={console.log}>
+  //       {({ checked }) => <span>{checked ? 'On' : 'Off'}</span>}
+  //     </Switch>
+  //   )
+
+  //   assertSwitch({ state: SwitchState.On, textContent: 'On' })
+  // })
+
+  // it('should be possible to render an (off) Switch using a render prop', () => {
+  //   render(
+  //     <Switch checked={false} onChange={console.log}>
+  //       {({ checked }) => <span>{checked ? 'On' : 'Off'}</span>}
+  //     </Switch>
+  //   )
+
+  //   assertSwitch({ state: SwitchState.Off, textContent: 'Off' })
+  // })
+
+  it('should be possible to render an (on) Switch using an `as` prop', () => {
+    render(TestRenderer, {
+      allProps: [
+        Switch,
+        { as: "span", checked: true, onChange: console.log },
+      ]
+    });
+    assertSwitch({ state: SwitchState.On, tag: 'span' })
+  })
+
+  it('should be possible to render an (off) Switch using an `as` prop', () => {
+    render(TestRenderer, {
+      allProps: [
+        Switch,
+        { as: "span", checked: false, onChange: console.log },
+      ]
+    });
+    assertSwitch({ state: SwitchState.Off, tag: 'span' })
+  })
+
+  it('should be possible to use the switch contents as the label', () => {
+    render(TestRenderer, {
+      allProps: [
+        Switch,
+        { checked: false, onChange: console.log },
+        [
+          Span,
+          {},
+          "Enable notifications"
+        ]
+      ]
+    });
+    assertSwitch({ state: SwitchState.Off, label: 'Enable notifications' })
+  })
+
+  describe('`type` attribute', () => {
+    it('should set the `type` to "button" by default', async () => {
+      render(TestRenderer, {
+        allProps: [
+          Switch,
+          { checked: false, onChange: console.log },
+          "Trigger"
+        ]
+      });
+
+      expect(getSwitch()).toHaveAttribute('type', 'button')
+    })
+
+    it('should not set the `type` to "button" if it already contains a `type`', async () => {
+      render(TestRenderer, {
+        allProps: [
+          Switch,
+          { checked: false, onChange: console.log, type: "submit" },
+          "Trigger"
+        ]
+      });
+
+      expect(getSwitch()).toHaveAttribute('type', 'submit')
+    })
+
+    it('should not set the type if the "as" prop is not a "button"', async () => {
+      render(TestRenderer, {
+        allProps: [
+          Switch,
+          { checked: false, onChange: console.log, as: "div" },
+          "Trigger"
+        ]
+      });
+
+      expect(getSwitch()).not.toHaveAttribute('type')
+    })
+  })
+})