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view src/testdir/test_random.vim @ 19013:dd9ab0674eec v8.2.0067

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patch 8.2.0067: ERROR_UNKNOWN clashes on some systems Commit: https://github.com/vim/vim/commit/ef140544f6703a7a4c0f6a15f610508ed6b09e89 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Dec 31 21:27:13 2019 +0100 patch 8.2.0067: ERROR_UNKNOWN clashes on some systems Problem: ERROR_UNKNOWN clashes on some systems. Solution: Rename ERROR_ to FCERR_. (Ola S?der, closes https://github.com/vim/vim/issues/5415)
author Bram Moolenaar <Bram@vim.org>
date Tue, 31 Dec 2019 21:30:04 +0100
parents c477006e8857
children 76cb39bf1871
line wrap: on
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" Tests for srand() and rand()

func Test_Rand()
  let r = srand(123456789)
  call assert_equal([1573771921, 319883699, 2742014374, 1324369493], r)
  call assert_equal(4284103975, rand(r))
  call assert_equal(1001954530, rand(r))
  call assert_equal(2701803082, rand(r))
  call assert_equal(2658065534, rand(r))
  call assert_equal(3104308804, rand(r))

  call test_settime(12341234)
  let s = srand()
  if filereadable('/dev/urandom')
    " using /dev/urandom
    call assert_notequal(s, srand())
  else
    " using time()
    call assert_equal(s, srand())
    call test_settime(12341235)
    call assert_notequal(s, srand())
  endif

  call srand()
  let v = rand()
  call assert_notequal(v, rand())

  if has('float')
    call assert_fails('echo srand(1.2)', 'E805:')
  endif
  call assert_fails('echo srand([1])', 'E745:')
  call assert_fails('echo rand("burp")', 'E475:')
  call assert_fails('echo rand([1, 2, 3])', 'E475:')
  call assert_fails('echo rand([[1], 2, 3, 4])', 'E475:')
  call assert_fails('echo rand([1, [2], 3, 4])', 'E475:')
  call assert_fails('echo rand([1, 2, [3], 4])', 'E475:')
  call assert_fails('echo rand([1, 2, 3, [4]])', 'E475:')

  call test_settime(0)
endfunc