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-rw-r--r--tests/arithmetic.lisp13
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/arithmetic.lisp b/tests/arithmetic.lisp
index e8634d7..1942a1d 100644
--- a/tests/arithmetic.lisp
+++ b/tests/arithmetic.lisp
@@ -5,6 +5,19 @@
(assert (= 2 (i/ 11 5)))
(assert (= 1 (mod 11 5)))
+(assert (zerop 0))
+(assert (not (zerop 1)))
+(assert (not (zerop -1)))
+
+(assert (plusp 1))
+(assert (plusp 1.0))
+(assert (not (plusp 0)))
+(assert (not (plusp -1)))
+
+(assert (minusp -1))
+(assert (not (minusp 0)))
+(assert (not (minusp 1)))
+
(assert (< 1 2))
(assert (< 1.0 2))
(assert (not (> 1 2)))