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-rw-r--r--test/functional/eval/reltime_spec.lua10
1 files changed, 10 insertions, 0 deletions
diff --git a/test/functional/eval/reltime_spec.lua b/test/functional/eval/reltime_spec.lua
index 0181f09024..ef7a3a148f 100644
--- a/test/functional/eval/reltime_spec.lua
+++ b/test/functional/eval/reltime_spec.lua
@@ -33,4 +33,14 @@ describe('reltimestr(), reltimefloat()', function()
ok(reltimefloat(differs) < 1.0)
end)
+
+ it('reltime() allows negative result #10452', function()
+ local older_time = reltime()
+ command('sleep 1m')
+ local newer_time = reltime()
+ -- Should be something like -0.002123.
+ local rv = tonumber(reltimestr(reltime(newer_time, older_time)))
+ ok(rv < 0)
+ ok(rv > -10)
+ end)
end)