diff --git a/src/testdir/test_expr.vim b/src/testdir/test_expr.vim
index 8e55bc5..f5c9e26 100644
--- a/src/testdir/test_expr.vim
+++ b/src/testdir/test_expr.vim
@@ -21,3 +21,18 @@
 
   call assert_fails('echo base.method > instance.method')
 endfunc
+
+func Test_version()
+  call assert_true(has('patch-7.4.001'))
+  call assert_true(has('patch-7.4.01'))
+  call assert_true(has('patch-7.4.1'))
+  call assert_true(has('patch-6.9.999'))
+  call assert_true(has('patch-7.1.999'))
+  call assert_true(has('patch-7.4.123'))
+
+  call assert_false(has('patch-7'))
+  call assert_false(has('patch-7.4'))
+  call assert_false(has('patch-7.4.'))
+  call assert_false(has('patch-9.1.0'))
+  call assert_false(has('patch-9.9.1'))
+endfunc