/* @flow */
import path from 'path';

import { fs } from 'mz';
import { assert } from 'chai';
import { describe, it } from 'mocha';

import isDirectory from '../../../src/util/is-directory.js';
import { withTempDir } from '../../../src/util/temp-dir.js';

describe('util.isDirectory', () => {
  it('resolves true for a directory', () =>
    withTempDir((tmpDir) => {
      return isDirectory(tmpDir.path()).then((dirExists) => {
        assert.equal(dirExists, true);
      });
    }));

  it('resolves false for non-existent paths', () => {
    return isDirectory('/dev/null/not-a-real-path-at-all').then((dirExists) => {
      assert.equal(dirExists, false);
    });
  });

  it('resolves false for non-directory paths', () =>
    withTempDir((tmpDir) => {
      const filePath = path.join(tmpDir.path(), 'some.txt');
      return fs
        .writeFile(filePath, 'some text')
        .then(() => isDirectory(filePath))
        .then((dirExists) => {
          assert.equal(dirExists, false);
        });
    }));

  it('resolves false for incomplete directory paths', () =>
    withTempDir((tmpDir) => {
      return isDirectory(path.join(tmpDir.path(), 'missing-leaf')).then(
        (dirExists) => {
          assert.equal(dirExists, false);
        }
      );
    }));
});
