claude-code/src/utils/__tests__/semanticBoolean.test.ts

import { describe, expect, test } from "bun:test";
import { z } from "zod/v4";
import { semanticBoolean } from "../semanticBoolean";

describe("semanticBoolean", () => {
  test("parses boolean true to true", () => {
    expect(semanticBoolean().parse(true)).toBe(true);
  });

  test("parses boolean false to false", () => {
    expect(semanticBoolean().parse(false)).toBe(false);
  });

  test("parses string 'true' to true", () => {
    expect(semanticBoolean().parse("true")).toBe(true);
  });

  test("parses string 'false' to false", () => {
    expect(semanticBoolean().parse("false")).toBe(false);
  });

  test("rejects string 'TRUE' (case-sensitive)", () => {
    expect(() => semanticBoolean().parse("TRUE")).toThrow();
  });

  test("rejects string 'FALSE' (case-sensitive)", () => {
    expect(() => semanticBoolean().parse("FALSE")).toThrow();
  });

  test("rejects number 1", () => {
    expect(() => semanticBoolean().parse(1)).toThrow();
  });

  test("rejects null", () => {
    expect(() => semanticBoolean().parse(null)).toThrow();
  });

  test("rejects undefined", () => {
    expect(() => semanticBoolean().parse(undefined)).toThrow();
  });

  test("works with custom inner schema (z.boolean().optional())", () => {
    const schema = semanticBoolean(z.boolean().optional());
    expect(schema.parse(true)).toBe(true);
    expect(schema.parse("false")).toBe(false);
    expect(schema.parse(undefined)).toBeUndefined();
  });
});