Fix CI

File#exist? is called in many locations.  If we want to mock its behavior
for some use cases, we must ensure that only the specific test case is
mocked and the other calls still rely on the original implementation.

Author: smortex

spec/functions/loadjson_spec.rb

@@ -26,6 +26,7 @@
       end
 
       before(:each) do
+        allow(File).to receive(:exist?).and_call_original
         allow(File).to receive(:exist?).with(filename).and_return(false).once
         if Puppet::PUPPETVERSION[0].to_i < 8
           allow(PSON).to receive(:load).never # rubocop:disable RSpec/ReceiveNever  Switching to not_to receive breaks testing in this case
@@ -51,6 +52,7 @@
       let(:json) { '{"key":"value", {"ķęŷ":"νậŀųề" }, {"キー":"値" }' }
 
       before(:each) do
+        allow(File).to receive(:exist?).and_call_original
         allow(File).to receive(:exist?).with(filename).and_return(true).once
         allow(File).to receive(:read).with(filename).and_return(json).once
         allow(File).to receive(:read).with(filename).and_return(json).once
@@ -75,6 +77,7 @@
       let(:json) { '{"key":"value"}' }
 
       before(:each) do
+        allow(File).to receive(:exist?).and_call_original
         allow(File).to receive(:exist?).with(filename).and_return(true).once
         allow(File).to receive(:read).with(filename).and_return(json).once
         if Puppet::PUPPETVERSION[0].to_i < 8

spec/functions/loadyaml_spec.rb

@@ -10,6 +10,7 @@
     let(:filename) { '/tmp/doesnotexist' }
 
     it "'default' => 'value'" do
+      allow(File).to receive(:exist?).and_call_original
       expect(File).to receive(:exist?).with(filename).and_return(false).once
       expect(YAML).not_to receive(:load_file)
       expect(subject).to run.with_params(filename, 'default' => 'value').and_return('default' => 'value')
@@ -21,6 +22,7 @@
     let(:data) { { 'key' => 'value', 'ķęŷ' => 'νậŀųề', 'キー' => '値' } }
 
     it "returns 'key' => 'value', 'ķęŷ' => 'νậŀųề', 'キー' => '値'" do
+      allow(File).to receive(:exist?).and_call_original
       expect(File).to receive(:exist?).with(filename).and_return(true).once
       expect(YAML).to receive(:load_file).with(filename).and_return(data).once
       expect(subject).to run.with_params(filename).and_return(data)
@@ -31,6 +33,7 @@
     let(:filename) { '/tmp/doesexist' }
 
     it 'filename /tmp/doesexist' do
+      allow(File).to receive(:exist?).and_call_original
       expect(File).to receive(:exist?).with(filename).and_return(true).once
       allow(YAML).to receive(:load_file).with(filename).once.and_raise(StandardError, 'Something terrible have happened!')
       expect(subject).to run.with_params(filename, 'default' => 'value').and_return('default' => 'value')