// SPDX-License-Identifier: MIT
// Part of pi-steering.
//
// Unit tests for refToText. The function is a thin wrapper around
// unbash-walker's getBasename / getCommandArgs; these tests pin the
// exact rendered shape observer-watch patterns see so a future
// refactor that accidentally changes spacing (e.g. drops the trim)
// doesn't silently break every `watch.inputMatches.command` in the
// wild.

import assert from "node:assert/strict";
import { describe, it } from "node:test";
import { extractAllCommandsFromAST, parse } from "@cad0p/unbash-walker";
import { refToText } from "./ref-text.ts";

function refsFor(command: string) {
  const script = parse(command);
  return extractAllCommandsFromAST(script, command);
}

describe("refToText", () => {
  it("renders bare command with no args", () => {
    const [ref] = refsFor("alpha");
    assert.equal(refToText(ref!), "alpha");
  });

  it("renders command with single arg", () => {
    const [ref] = refsFor("git push");
    assert.equal(refToText(ref!), "git push");
  });

  it("renders command with multiple args, space-joined", () => {
    const [ref] = refsFor("git push origin main --force");
    assert.equal(refToText(ref!), "git push origin main --force");
  });

  it("trims trailing space from empty args list", () => {
    const [ref] = refsFor("noop");
    assert.equal(
      refToText(ref!),
      "noop",
      "no trailing space when args is empty",
    );
  });

  it("basename strips path prefix", () => {
    const [ref] = refsFor("/usr/local/bin/cr --all");
    assert.equal(
      refToText(ref!),
      "cr --all",
      "rendered command uses basename, not absolute path",
    );
  });
});