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test: add simple typing tests #298
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5 changes: 5 additions & 0 deletions
src/__tests__/fixtures/Simple.svelte
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| <script lang="ts"> | ||
| export let name: string | ||
| </script> | ||
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| <h1>hello {name}</h1> |
10 changes: 10 additions & 0 deletions
tsconfig.json
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| { | ||
| "compilerOptions": { | ||
| "module": "node16", | ||
| "noEmit": true, | ||
| "skipLibCheck": true, | ||
| "strict": true, | ||
| "types": ["svelte", "vite/client", "vitest", "vitest/globals"], | ||
| }, | ||
| "include": ["src", "types"], | ||
| } |
58 changes: 58 additions & 0 deletions
types/types.test-d.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| import { expectTypeOf } from 'expect-type' | ||
| import type { ComponentProps, SvelteComponent } from 'svelte' | ||
| import { describe, test } from 'vitest' | ||
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| import Simple from '../src/__tests__/fixtures/Simple.svelte' | ||
| import * as subject from './index.js' | ||
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| describe('types', () => { | ||
| test('render is a function that accepts a Svelte component', () => { | ||
| subject.render(Simple, { name: 'Alice' }) | ||
| subject.render(Simple, { props: { name: 'Alice' } }) | ||
| }) | ||
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| test('invalid prop types are rejected', () => { | ||
| // @ts-expect-error: name should be a string | ||
| subject.render(Simple, { name: 42 }) | ||
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| // @ts-expect-error: name should be a string | ||
| subject.render(Simple, { props: { name: 42 } }) | ||
| }) | ||
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| test('render result has container and component', () => { | ||
| const result = subject.render(Simple, { name: 'Alice' }) | ||
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| expectTypeOf(result).toMatchTypeOf<{ | ||
| container: HTMLElement | ||
| component: SvelteComponent<{ name: string }> | ||
| debug: (el?: HTMLElement) => void | ||
| rerender: (options: ComponentProps<Simple>) => void | ||
| unmount: () => void | ||
| }>() | ||
| }) | ||
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| test('render result has default queries', () => { | ||
| const result = subject.render(Simple, { name: 'Alice' }) | ||
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| expectTypeOf(result.getByRole).parameters.toMatchTypeOf< | ||
| [role: subject.ByRoleMatcher, options?: subject.ByRoleOptions] | ||
| >() | ||
| }) | ||
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| test('render result can have custom queries', () => { | ||
| const [getByVibes] = subject.buildQueries( | ||
| (_container: HTMLElement, vibes: string) => { | ||
| throw new Error(`unimplemented ${vibes}`) | ||
| }, | ||
| () => '', | ||
| () => '' | ||
| ) | ||
| const result = subject.render( | ||
| Simple, | ||
| { name: 'Alice' }, | ||
| { queries: { getByVibes } } | ||
| ) | ||
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| expectTypeOf(result.getByVibes).parameters.toMatchTypeOf<[vibes: string]>() | ||
| }) | ||
| }) |
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