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| author | Bram Moolenaar <Bram@vim.org> | 2019-11-26 12:23:30 +0100 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2019-11-26 12:23:30 +0100 |
| commit | 07e4a197953d12902fb97beb48830a5323a52280 (patch) | |
| tree | 2606081e24020a6d9985531651099b0fc2aa3381 /src/testdir/test_random.vim | |
| parent | 06b0b4bc27077013e9b4b48fd1d9b33e543ccf99 (diff) | |
| download | vim-git-07e4a197953d12902fb97beb48830a5323a52280.tar.gz | |
patch 8.1.2343: using time() for srand() is not very randomv8.1.2343
Problem: Using time() for srand() is not very random.
Solution: use /dev/urandom if available
Diffstat (limited to 'src/testdir/test_random.vim')
| -rw-r--r-- | src/testdir/test_random.vim | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/testdir/test_random.vim b/src/testdir/test_random.vim index 381475a43..9fe71a98c 100644 --- a/src/testdir/test_random.vim +++ b/src/testdir/test_random.vim @@ -11,9 +11,15 @@ func Test_Rand() call test_settime(12341234) let s = srand() - call assert_equal(s, srand()) - call test_settime(12341235) - call assert_notequal(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() @@ -25,4 +31,6 @@ func Test_Rand() 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 |