import { expect, expectTypeOf, test } from "vitest";
import * as z from "zod/v4";
test("instanceof", async () => {
class Test {}
class Subtest extends Test {}
abstract class AbstractBar {
constructor(public val: string) {}
}
class Bar extends AbstractBar {}
const TestSchema = z.instanceof(Test);
const SubtestSchema = z.instanceof(Subtest);
const AbstractSchema = z.instanceof(AbstractBar);
const BarSchema = z.instanceof(Bar);
TestSchema.parse(new Test());
TestSchema.parse(new Subtest());
SubtestSchema.parse(new Subtest());
AbstractSchema.parse(new Bar("asdf"));
const bar = BarSchema.parse(new Bar("asdf"));
expect(bar.val).toEqual("asdf");
await expect(() => SubtestSchema.parse(new Test())).toThrow();
await expect(() => TestSchema.parse(12)).toThrow();
expectTypeOf<Test>().toEqualTypeOf<z.infer<typeof TestSchema>>();
});
test("instanceof fatal", () => {
const schema = z.instanceof(Date).refine((d) => d.toString());
const res = schema.safeParse(null);
expect(res.success).toBe(false);
});
test("instanceof respects customError", () => {
class Test {
name!: string;
}
z.config({
customError: () => {
return "This is invalid!";
},
});
const TestSchema = z.instanceof(Test);
const result = TestSchema.safeParse("whatever");
expect(result.success).toBe(false);
if (!result.success) {
const issue = result.error.issues[0];
expect(issue.code).toBe("invalid_type");
if (issue.code === "invalid_type") {
expect(issue.expected).toBe("Test");
}
expect(issue.message).toBe("This is invalid!");
}
z.config({ customError: undefined });
});
