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Copy pathallow-null-in-optional-parameter.spec.js
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51 lines (48 loc) · 983 Bytes
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import { RuleTester } from "@typescript-eslint/rule-tester";
import rule from "./allow-null-in-optional-parameter.js";
const ruleTester = new RuleTester();
ruleTester.run("allow-null-in-optional-parameter", rule, {
valid: [
`
interface CreateAccountParams {
email?: string | null;
}
`,
],
invalid: [
{
code: `
interface CreateAccountParams {
email?: string;
}
`,
errors: [
{
message: "Always use `T | null` for optional property",
},
],
output: `
interface CreateAccountParams {
email?: string | null;
}
`,
},
{
code: `
interface CreateAccountParams {
email: string | null;
}
`,
errors: [
{
message: "Mark nullable parameter as optional",
},
],
output: `
interface CreateAccountParams {
email?: string | null;
}
`,
},
],
});