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Diffstat (limited to 'src/testdir/test_random.vim')
| -rw-r--r-- | src/testdir/test_random.vim | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/testdir/test_random.vim b/src/testdir/test_random.vim new file mode 100644 index 0000000..be8473f --- /dev/null +++ b/src/testdir/test_random.vim @@ -0,0 +1,56 @@ +" Tests for srand() and rand() + +source check.vim +source shared.vim + +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)) + + let s = srand() + " using /dev/urandom or used time, result is different each time + call assert_notequal(s, srand()) + + call test_srand_seed(123456789) + call assert_equal(4284103975, rand()) + call assert_equal(1001954530, rand()) + call test_srand_seed() + + call assert_fails('echo srand(1.2)', 'E805:') + call assert_fails('echo srand([1])', 'E745:') + call assert_fails('echo rand("burp")', 'E475:') + call assert_fails('echo rand([1, 2, 3])', 'E730:') + call assert_fails('echo rand([[1], 2, 3, 4])', 'E730:') + call assert_fails('echo rand([1, [2], 3, 4])', 'E730:') + call assert_fails('echo rand([1, 2, [3], 4])', 'E730:') + call assert_fails('echo rand([1, 2, 3, [4]])', 'E730:') +endfunc + +func Test_issue_5587() + call rand() + call garbagecollect() + call rand() +endfunc + +func Test_srand() + CheckNotGui + + let cmd = GetVimCommand() .. ' -V -es -c "echo rand()" -c qa!' + let bad = 0 + for _ in range(10) + echo cmd + let result1 = system(cmd) + let result2 = system(cmd) + if result1 ==# result2 + let bad += 1 + endif + endfor + call assert_inrange(0, 4, bad) +endfunc + +" vim: shiftwidth=2 sts=2 expandtab |