diff --git a/src/testdir/test_vimscript.vim b/src/testdir/test_vimscript.vim
index 69a2eba..dc4df44 100644
--- a/src/testdir/test_vimscript.vim
+++ b/src/testdir/test_vimscript.vim
@@ -1330,6 +1330,7 @@
     " and
     call assert_equal(127, and(127, 127))
     call assert_equal(16, and(127, 16))
+    eval 127->and(16)->assert_equal(16)
     call assert_equal(0, and(127, 128))
     call assert_fails("call and(1.0, 1)", 'E805:')
     call assert_fails("call and([], 1)", 'E745:')
@@ -1340,6 +1341,7 @@
     " or
     call assert_equal(23, or(16, 7))
     call assert_equal(15, or(8, 7))
+    eval 8->or(7)->assert_equal(15)
     call assert_equal(123, or(0, 123))
     call assert_fails("call or(1.0, 1)", 'E805:')
     call assert_fails("call or([], 1)", 'E745:')
@@ -1350,6 +1352,7 @@
     " xor
     call assert_equal(0, xor(127, 127))
     call assert_equal(111, xor(127, 16))
+    eval 127->xor(16)->assert_equal(111)
     call assert_equal(255, xor(127, 128))
     call assert_fails("call xor(1.0, 1)", 'E805:')
     call assert_fails("call xor([], 1)", 'E745:')
@@ -1359,6 +1362,7 @@
     call assert_fails("call xor(1, {})", 'E728:')
     " invert
     call assert_equal(65408, and(invert(127), 65535))
+    eval 127->invert()->and(65535)->assert_equal(65408)
     call assert_equal(65519, and(invert(16), 65535))
     call assert_equal(65407, and(invert(128), 65535))
     call assert_fails("call invert(1.0)", 'E805:')