1 files changed, 19 insertions, 0 deletions
diff --git a/spec/functions/is_string_spec.rb b/spec/functions/is_string_spec.rb
index 8e459cc..e92f85c 100755
--- a/spec/functions/is_string_spec.rb
+++ b/spec/functions/is_string_spec.rb
@@ -1,6 +1,7 @@
 require 'spec_helper'
 
 describe 'is_string' do
+
   it { is_expected.not_to eq(nil) }
   it { is_expected.to run.with_params().and_raise_error(Puppet::ParseError, /wrong number of arguments/i) }
   it {
@@ -25,4 +26,22 @@ describe 'is_string' do
   it { is_expected.to run.with_params(false).and_return(false) }
   it { is_expected.to run.with_params('one').and_return(true) }
   it { is_expected.to run.with_params('0001234').and_return(true) }
+
+  context 'Checking for deprecation warning' do
+    after(:all) do
+      ENV.delete('STDLIB_LOG_DEPRECATIONS')
+    end
+    # Checking for deprecation warning, which should only be provoked when the env variable for it is set.
+    it 'should display a single deprecation' do
+      ENV['STDLIB_LOG_DEPRECATIONS'] = "true"
+      scope.expects(:warning).with(includes('This method is deprecated'))
+      is_expected.to run.with_params('sponge').and_return(true)
+    end
+    it 'should display no warning for deprecation' do
+      ENV['STDLIB_LOG_DEPRECATIONS'] = "false"
+      scope.expects(:warning).with(includes('This method is deprecated')).never
+      is_expected.to run.with_params('bob').and_return(true)
+    end
+  end 
+
 end