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feat(ct): class and object components #30269

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feat(ct): class and object components #30269

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21 changes: 20 additions & 1 deletion packages/playwright-ct-core/src/tsxTransform.ts
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Expand Up @@ -21,6 +21,7 @@ import { setTransformData } from 'playwright/lib/transform/transform';
const t: typeof T = types;

let jsxComponentNames: Set<string>;
let classComponentNames: Set<string>;
let importInfos: Map<string, ImportInfo>;

export default declare((api: BabelAPI) => {
Expand All @@ -32,6 +33,7 @@ export default declare((api: BabelAPI) => {
Program: {
enter(path) {
jsxComponentNames = collectJsxComponentUsages(path.node);
classComponentNames = collectClassMountUsages(path.node);
importInfos = new Map();
},
exit(path) {
Expand Down Expand Up @@ -93,7 +95,7 @@ export default declare((api: BabelAPI) => {
if (t.isImportNamespaceSpecifier(specifier))
continue;
const { localName, info } = importInfo(importNode, specifier, this.filename!);
if (jsxComponentNames.has(localName)) {
if (jsxComponentNames.has(localName) || classComponentNames.has(localName)) {
importInfos.set(localName, info);
++importCount;
}
Expand Down Expand Up @@ -141,6 +143,23 @@ function collectJsxComponentUsages(node: T.Node): Set<string> {
return names;
}

function collectClassMountUsages(node: T.Node): Set<string> {
const names = new Set<string>();
traverse(node, {
enter: p => {
// Treat calls to mount and all identifiers in arguments as component usages e.g. mount(Component)
if (t.isCallExpression(p.node) && t.isIdentifier(p.node.callee) && p.node.callee.name === 'mount') {
p.traverse({
Identifier: p => {
names.add(p.node.name);
}
});
}
}
});
return names;
}

export type ImportInfo = {
id: string;
filename: string;
Expand Down
10 changes: 10 additions & 0 deletions tests/components/ct-vue-vite/src/components/Story.ts
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@@ -0,0 +1,10 @@
import { defineComponent, h } from 'vue';

export const Story = defineComponent(
(props) => {
return () => h('div', props.title);
},
{
props: ['title'],
}
);
10 changes: 10 additions & 0 deletions tests/components/ct-vue-vite/tests/render/render.spec.js
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Expand Up @@ -2,6 +2,7 @@ import { test, expect } from '@playwright/experimental-ct-vue';
import Button from '@/components/Button.vue';
import EmptyTemplate from '@/components/EmptyTemplate.vue';
import Component from '@/components/Component.vue';
import { Story } from '@/components/Story';

test('render props', async ({ mount }) => {
const component = await mount(Button, {
Expand All @@ -23,3 +24,12 @@ test('render a component without options', async ({ mount }) => {
const component = await mount(Component);
await expect(component).toContainText('test');
});

test('render props with defineComponent syntax', async ({ mount }) => {
const component = await mount(Story, {
props: {
title: 'story/wrapper'
}
});
await expect(component).toContainText('story/wrapper');
});
10 changes: 10 additions & 0 deletions tests/components/ct-vue-vite/tests/render/render.spec.ts
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Expand Up @@ -2,6 +2,7 @@ import { test, expect } from '@playwright/experimental-ct-vue';
import Button from '@/components/Button.vue';
import EmptyTemplate from '@/components/EmptyTemplate.vue';
import Component from '@/components/Component.vue';
import { Story } from '@/components/Story';
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How typical is this?

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It depends on the app, but I don't it's that typical; its useful when a wrapper/story needs to be created to test components, where Playwright cannot serialise the data sent to the browser (such as unserialisable props). It's possible to create multiple .vue files but that's quite cumbersome.

There are additional use cases where importing components from a .ts file would be beneficial tho, such as supporting Angular and web components (without relying on a specific file extension).


test('render props', async ({ mount }) => {
const component = await mount(Button, {
Expand All @@ -23,3 +24,12 @@ test('render a component without options', async ({ mount }) => {
const component = await mount(Component);
await expect(component).toContainText('test');
});

test('render props with defineComponent syntax', async ({ mount }) => {
const component = await mount(Story, {
props: {
title: 'story/wrapper'
}
});
await expect(component).toContainText('story/wrapper');
});
6 changes: 6 additions & 0 deletions tests/components/ct-vue-vite/tests/render/render.spec.tsx
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@@ -1,6 +1,7 @@
import { test, expect } from '@playwright/experimental-ct-vue';
import Button from '@/components/Button.vue';
import EmptyTemplate from '@/components/EmptyTemplate.vue';
import { Story } from '@/components/Story';

test('render props', async ({ mount }) => {
const component = await mount(<Button title='Submit' />);
Expand All @@ -19,3 +20,8 @@ test('render an empty component', async ({ page, mount }) => {
expect(await component.textContent()).toBe('');
await expect(component).toHaveText('');
});

test('render props with defineComponent syntax', async ({ mount }) => {
const component = await mount(<Story title="story/wrapper" />);
await expect(component).toContainText('story/wrapper');
});