From b2ea083eeba5a99b90e554ad0023f0d54a21b7fe Mon Sep 17 00:00:00 2001 From: ZyX Date: Sat, 26 Dec 2015 01:18:14 +0300 Subject: eval: Return different values when dividing by zero Fixes #3263 --- test/functional/eval/operators_spec.lua | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 test/functional/eval/operators_spec.lua (limited to 'test/functional/eval') diff --git a/test/functional/eval/operators_spec.lua b/test/functional/eval/operators_spec.lua new file mode 100644 index 0000000000..bc9a17935c --- /dev/null +++ b/test/functional/eval/operators_spec.lua @@ -0,0 +1,28 @@ +local helpers = require('test.functional.helpers') +local eq = helpers.eq +local eval = helpers.eval +local clear = helpers.clear + +describe('Division operator', function() + before_each(clear) + + it('returns infinity on {positive}/0.0', function() + eq('str2float(\'inf\')', eval('string(1.0/0.0)')) + eq('str2float(\'inf\')', eval('string(1.0e-100/0.0)')) + eq('str2float(\'inf\')', eval('string(1.0e+100/0.0)')) + eq('str2float(\'inf\')', eval('string((1.0/0.0)/0.0)')) + end) + + it('returns -infinity on {negative}/0.0', function() + eq('-str2float(\'inf\')', eval('string((-1.0)/0.0)')) + eq('-str2float(\'inf\')', eval('string((-1.0e-100)/0.0)')) + eq('-str2float(\'inf\')', eval('string((-1.0e+100)/0.0)')) + eq('-str2float(\'inf\')', eval('string((-1.0/0.0)/0.0)')) + end) + + it('returns NaN on 0.0/0.0', function() + eq('str2float(\'nan\')', eval('string(0.0/0.0)')) + eq('str2float(\'nan\')', eval('string(-(0.0/0.0))')) + eq('str2float(\'nan\')', eval('string((-0.0)/0.0)')) + end) +end) -- cgit