(maint) spec fix nil expectation

Author: h0tw1r3

spec/unit/puppet/provider/mysql_database/mysql_spec.rb

@@ -25,7 +25,7 @@
   end
 
   before :each do
-    allow(Facter.fact(:value)).to receive(:root_home).and_return('/root')
+    allow(Facter).to receive(:value).with(:root_home).and_return('/root')
     allow(Puppet::Util).to receive(:which).with('mysql').and_return('/usr/bin/mysql')
     allow(File).to receive(:file?).with('/root/.my.cnf').and_return(true)
     allow(provider.class).to receive(:mysql_caller).with('show databases', 'regular').and_return('new_database')