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chore(ct): throw error when props are not json serializable #22025

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merged 3 commits into from
Mar 29, 2023
Merged

chore(ct): throw error when props are not json serializable #22025

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a1d6506
chore(ct): throw error when props are not json serializable
sand4rt Mar 28, 2023
9663be8
fix(ct): linting
sand4rt Mar 28, 2023
2e2c67b
chore(ct): throw error when props are not json serializable
sand4rt Mar 28, 2023
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20 changes: 20 additions & 0 deletions packages/playwright-test/src/mount.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,8 @@ export const fixtures: Fixtures<

mount: async ({ page }, use) => {
await use(async (component: JsxComponent | string, options?: MountOptions) => {
if (options?.props && !isJson(options.props))
throw new Error('The mount function props are not JSON serializable.');
const selector = await (page as any)._wrapApiCall(async () => {
return await innerMount(page, component, options);
}, true);
Expand All @@ -72,6 +74,24 @@ export const fixtures: Fixtures<
},
};

const jsonType: Record<string, Function> = {
string: (value: any) => typeof value === 'string',
number: (value: any) => typeof value === 'number',
boolean: (value: any) => typeof value === 'boolean',
null: (value: any) => value === null,
array: (value: any) => Array.isArray(value) && value.every(isJson),
object: (value: any) => typeof value === 'object' && value !== null && !Array.isArray(value)
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JSON will have a default serializing conventions for types like Date, but I guess it is Ok to be more restrictive here.

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Not sure if i fully get that. Thought only the string, number, boolean, null, array and object types are JSON serializable? Do you mean that JSON.parse(JSON.stringify({ boop: Date })) will return {} ?

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Look at what JSON.stringify({ data: new Date() }) produces, but don't bother.

&& Object.values(value).every(isJson),
}

function isJson(value: any): boolean {
const valueType = Array.isArray(value) ? 'array' : typeof value;
const validate = jsonType[valueType];
if (validate)
return validate(value);
return false;
}

function isJsxApi(options: Record<string, unknown>): options is JsxComponent {
return options?.kind === 'jsx';
}
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