Mercurial > vim
diff src/testdir/test_random.vim @ 18701:128662297ddf v8.1.2342
patch 8.1.2342: random number generator in Vim script is slow
Commit: https://github.com/vim/vim/commit/06b0b4bc27077013e9b4b48fd1d9b33e543ccf99
Author: Bram Moolenaar <Bram@vim.org>
Date: Mon Nov 25 15:40:55 2019 +0100
patch 8.1.2342: random number generator in Vim script is slow
Problem: Random number generator in Vim script is slow.
Solution: Add rand() and srand(). (Yasuhiro Matsumoto, closes https://github.com/vim/vim/issues/1277)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Mon, 25 Nov 2019 15:45:04 +0100 |
| parents | |
| children | aef98a646d3e |
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new file mode 100644 --- /dev/null +++ b/src/testdir/test_random.vim @@ -0,0 +1,28 @@ +" Tests for srand() and rand() + +func Test_Rand() + let r = srand(123456789) + call assert_equal([123456789, 362436069, 521288629, 88675123], r) + call assert_equal(3701687786, rand(r)) + call assert_equal(458299110, rand(r)) + call assert_equal(2500872618, rand(r)) + call assert_equal(3633119408, rand(r)) + call assert_equal(516391518, rand(r)) + + call test_settime(12341234) + let s = srand() + call assert_equal(s, srand()) + call test_settime(12341235) + call assert_notequal(s, srand()) + + call srand() + let v = rand() + call assert_notequal(v, rand()) + + call assert_fails('echo srand([1])', 'E745:') + 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:') +endfunc