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-rwxr-xr-xspec/functions/validate_string_spec.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/spec/functions/validate_string_spec.rb b/spec/functions/validate_string_spec.rb
index b5ce763..0907ede 100755
--- a/spec/functions/validate_string_spec.rb
+++ b/spec/functions/validate_string_spec.rb
@@ -18,6 +18,7 @@ describe 'validate_string' do
describe 'valid inputs' do
it { is_expected.to run.with_params('') }
+ it { is_expected.to run.with_params(nil) }
it { is_expected.to run.with_params('one') }
it { is_expected.to run.with_params('one', 'two') }
end