nim-stint/tests/test_int_comparison.nim

57 lines
1.1 KiB
Nim

# Stint
# Copyright 2018 Status Research & Development GmbH
# Licensed under either of
#
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
#
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import ../src/stint, unittest
suite "Signed int - Testing comparison operators":
let
a = 10'i16.stint(16)
b = 15'i16.stint(16)
c = 150'i16.stint(16)
test "< operator":
check:
a < b
not (a + b < b)
not (a + a + a < b + b)
-c < c
-c < a
-b < -a
not(-b < -b)
test "<= operator":
check:
a <= b
not (a + b <= b)
a + a + a <= b + b
-c <= c
-c <= a
-b <= -a
-b <= -b
test "> operator":
check:
b > a
not (b > a + b)
not (b + b > a + a + a)
c > -c
a > -c
b > -c
not(-b > -b)
test ">= operator":
check:
b >= a
not (b >= a + b)
b + b >= a + a + a
c >= -c
a >= -c
b >= -c
-b >= -b