Vue3: Introduce portable stories API

code/renderers/vue3/package.json

@@ -59,6 +59,7 @@
   },
   "devDependencies": {
     "@digitak/esrun": "^3.2.2",
+    "@testing-library/vue": "^8.0.0",
     "@types/prettier": "^3.0.0",
     "@vitejs/plugin-vue": "^4.4.0",
     "typescript": "^5.3.2",

code/renderers/vue3/src/__tests__/button.css

@@ -0,0 +1,30 @@
+.storybook-button {
+  font-family: 'Nunito Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
+  font-weight: 700;
+  border: 0;
+  border-radius: 3em;
+  cursor: pointer;
+  display: inline-block;
+  line-height: 1;
+}
+.storybook-button--primary {
+  color: white;
+  background-color: #1ea7fd;
+}
+.storybook-button--secondary {
+  color: #333;
+  background-color: transparent;
+  box-shadow: rgba(0, 0, 0, 0.15) 0px 0px 0px 1px inset;
+}
+.storybook-button--small {
+  font-size: 12px;
+  padding: 10px 16px;
+}
+.storybook-button--medium {
+  font-size: 14px;
+  padding: 11px 20px;
+}
+.storybook-button--large {
+  font-size: 16px;
+  padding: 12px 24px;
+}

code/renderers/vue3/src/__tests__/composeStories/Button.stories.ts

@@ -0,0 +1,121 @@
+import { userEvent, within } from '@storybook/testing-library';
+import type { Meta, StoryFn as CSF2Story, StoryObj } from '../..';
+
+import Button from './Button.vue';
+
+const meta = {
+  title: 'Example/Button',
+  component: Button,
+  argTypes: {
+    size: { control: 'select', options: ['small', 'medium', 'large'] },
+    backgroundColor: { control: 'color' },
+    onClick: { action: 'clicked' },
+  },
+  args: { primary: false },
+  excludeStories: /.*ImNotAStory$/,
+} as Meta<typeof Button>;
+
+export default meta;
+type CSF3Story = StoryObj<typeof meta>;
+
+// For testing purposes. Should be ignored in ComposeStories
+export const ImNotAStory = 123;
+
+const Template: CSF2Story = (args) => ({
+  components: { Button },
+  setup() {
+    return { args };
+  },
+  template: '<Button v-bind="args" />',
+});
+
+export const CSF2Secondary = Template.bind({});
+CSF2Secondary.args = {
+  label: 'label coming from story args!',
+  primary: false,
+};
+
+const getCaptionForLocale = (locale: string) => {
+  switch (locale) {
+    case 'es':
+      return 'Hola!';
+    case 'fr':
+      return 'Bonjour!';
+    case 'kr':
+      return '안녕하세요!';
+    case 'pt':
+      return 'Olá!';
+    default:
+      return 'Hello!';
+  }
+};
+
+export const CSF2StoryWithLocale: CSF2Story = (args, { globals }) => ({
+  components: { Button },
+  setup() {
+    console.log({ globals });
+    const label = getCaptionForLocale(globals.locale);
+    return { args: { ...args, label } };
+  },
+  template: `<div>
+    <p>locale: ${globals.locale}</p>
+    <Button v-bind="args" />
+  </div>`,
+});
+CSF2StoryWithLocale.storyName = 'WithLocale';
+
+export const CSF2StoryWithParamsAndDecorator = Template.bind({});
+CSF2StoryWithParamsAndDecorator.args = {
+  label: 'foo',
+};
+CSF2StoryWithParamsAndDecorator.parameters = {
+  layout: 'centered',
+};
+CSF2StoryWithParamsAndDecorator.decorators = [
+  () => ({ template: '<div style="margin: 3em;"><story/></div>' }),
+];
+
+export const CSF3Primary: CSF3Story = {
+  args: {
+    label: 'foo',
+    size: 'large',
+    primary: true,
+  },
+};
+
+export const CSF3Button: CSF3Story = {
+  args: { label: 'foo' },
+};
+
+export const CSF3ButtonWithRender: CSF3Story = {
+  ...CSF3Button,
+  render: (args) => ({
+    components: { Button },
+    setup() {
+      return { args };
+    },
+    template: `
+      <div>
+        <p data-testid="custom-render">I am a custom render function</p>
+        <Button v-bind="args" />
+      </div>
+    `,
+  }),
+};
+
+export const CSF3InputFieldFilled: CSF3Story = {
+  ...CSF3Button,
+  render: (args) => ({
+    components: { Button },
+    setup() {
+      return { args };
+    },
+    template: '<input data-testid="input" />',
+  }),
+  play: async ({ canvasElement, step }) => {
+    const canvas = within(canvasElement);
+    await step('Step label', async () => {
+      await userEvent.type(canvas.getByTestId('input'), 'Hello world!');
+    });
+  },
+};

code/renderers/vue3/src/__tests__/composeStories/Button.vue

@@ -0,0 +1,46 @@
+<template>
+  <button type="button" :class="classes" :style="style" @click="emit('myClickEvent', 0)">
+    {{ label }}
+  </button>
+</template>
+
+<script lang="ts" setup>
+import { computed } from 'vue';
+
+const props = withDefaults(
+  defineProps<{
+    /**
+     * The label of the button
+     */
+    label: string;
+    /**
+     * primary or secondary button
+     */
+    primary?: boolean;
+    /**
+     * size of the button
+     */
+    size?: 'small' | 'medium' | 'large';
+    /**
+     * background color of the button
+     */
+    backgroundColor?: string;
+  }>(),
+  { primary: false }
+);
+
+const emit = defineEmits<{
+  (e: 'myClickEvent', id: number): void;
+}>();
+
+const classes = computed(() => ({
+  'storybook-button': true,
+  'storybook-button--primary': props.primary,
+  'storybook-button--secondary': !props.primary,
+  [`storybook-button--${props.size || 'medium'}`]: true,
+}));
+
+const style = computed(() => ({
+  backgroundColor: props.backgroundColor,
+}));
+</script>

code/renderers/vue3/src/__tests__/composeStories/__snapshots__/internals.test.tsx.snap

@@ -0,0 +1,88 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`Renders CSF2Secondary story 1`] = `
+<body>
+  <div>
+    <button
+      class="storybook-button storybook-button--secondary storybook-button--medium"
+      type="button"
+    >
+      label coming from story args!
+    </button>
+  </div>
+</body>
+`;
+
+exports[`Renders CSF2StoryWithLocale story 1`] = `
+<body>
+  <div>
+    <div>
+      <p>
+        locale: undefined
+      </p>
+      <button
+        class="storybook-button storybook-button--secondary storybook-button--medium"
+        type="button"
+      >
+        Hello!
+      </button>
+    </div>
+  </div>
+</body>
+`;
+
+exports[`Renders CSF3Button story 1`] = `
+<body>
+  <div>
+    <button
+      class="storybook-button storybook-button--secondary storybook-button--medium"
+      type="button"
+    >
+      foo
+    </button>
+  </div>
+</body>
+`;
+
+exports[`Renders CSF3ButtonWithRender story 1`] = `
+<body>
+  <div>
+    <div>
+      <p
+        data-testid="custom-render"
+      >
+        I am a custom render function
+      </p>
+      <button
+        class="storybook-button storybook-button--secondary storybook-button--medium"
+        type="button"
+      >
+        foo
+      </button>
+    </div>
+  </div>
+</body>
+`;
+
+exports[`Renders CSF3InputFieldFilled story 1`] = `
+<body>
+  <div>
+    <input
+      data-testid="input"
+    />
+  </div>
+</body>
+`;
+
+exports[`Renders CSF3Primary story 1`] = `
+<body>
+  <div>
+    <button
+      class="storybook-button storybook-button--primary storybook-button--large"
+      type="button"
+    >
+      foo
+    </button>
+  </div>
+</body>
+`;