import { describe, it, expect } from "bun:test";
import {
  CliError,
  UsageError,
  ConfigError,
  CommandError,
  InternalError,
} from "../../src/cli/errors.ts";

describe("CliError 类层次", () => {
  it("UsageError 携带 message 和可选 hint", () => {
    const err = new UsageError("缺少参数", { hint: "请提供参数" });
    expect(err).toBeInstanceOf(CliError);
    expect(err).toBeInstanceOf(UsageError);
    expect(err.message).toBe("缺少参数");
    expect(err.hint).toBe("请提供参数");
    expect(err.usage).toBeUndefined();
  });

  it("UsageError 携带 message、hint、usage", () => {
    const err = new UsageError("缺少参数", {
      hint: "请提供参数",
      usage: "rune plan <change-name>",
    });
    expect(err.usage).toBe("rune plan <change-name>");
  });

  it("ConfigError 只带 message", () => {
    const err = new ConfigError("未初始化");
    expect(err).toBeInstanceOf(CliError);
    expect(err).toBeInstanceOf(ConfigError);
    expect(err.message).toBe("未初始化");
    expect(err.hint).toBeUndefined();
  });

  it("CommandError 带 message 和 hint", () => {
    const err = new CommandError("变更不存在", { hint: "请先运行 rune plan" });
    expect(err).toBeInstanceOf(CliError);
    expect(err.message).toBe("变更不存在");
    expect(err.hint).toBe("请先运行 rune plan");
  });

  it("InternalError 用默认 message", () => {
    const err = new InternalError();
    expect(err).toBeInstanceOf(CliError);
    expect(err.message).toBe("发生了未预期的错误");
  });

  it("可以用 name 区分错误类型", () => {
    expect(new UsageError("a").name).toBe("UsageError");
    expect(new ConfigError("b").name).toBe("ConfigError");
    expect(new CommandError("c").name).toBe("CommandError");
    expect(new InternalError().name).toBe("InternalError");
  });
});