1 files changed, 49 insertions, 0 deletions
diff --git a/src/testdir/test_random.vim b/src/testdir/test_random.vim
new file mode 100644
index 0000000..1457310
--- /dev/null
+++ b/src/testdir/test_random.vim
@@ -0,0 +1,49 @@
+" 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 !has('win32') && 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 test_srand_seed(123456789)
+  call assert_equal(4284103975, rand())
+  call assert_equal(1001954530, rand())
+  call test_srand_seed()
+
+  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])', '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:')
+
+  call test_settime(0)
+endfunc
+
+func Test_issue_5587()
+  call rand()
+  call garbagecollect()
+  call rand()
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab