Convert acceptance specs to RSpec 3.2.2 syntax

This conversion is done by Transpec 3.1.0 with the following command:
    transpec spec/acceptance/

* 16 conversions
    from: it { should ... }
      to: it { is_expected.to ... }

* 6 conversions
    from: obj.should
      to: expect(obj).to

* 5 conversions
    from: == expected
      to: eq(expected)

* 1 conversion
    from: it { should_not ... }
      to: it { is_expected.not_to ... }

For more details: https://github.com/yujinakayama/transpec#supported-conversions

spec/acceptance/nginx_mail_spec.rb

@@ -21,8 +21,8 @@ describe "nginx::resource::mailhost define:" do
   end
 
   describe file('/etc/nginx/conf.mail.d/domain1.example.conf') do
-   it { should be_file }
-   it { should contain "auth_http             localhost/cgi-bin/auth;" }
+   it { is_expected.to be_file }
+   it { is_expected.to contain "auth_http             localhost/cgi-bin/auth;" }
   end
 
 end

spec/acceptance/nginx_proxy_spec.rb

@@ -23,16 +23,16 @@ describe "nginx::resource::upstream define:" do
   end
 
   describe file('/etc/nginx/conf.d/puppet_rack_app-upstream.conf') do
-   it { should be_file }
-   it { should contain "server     localhost:3000" }
-   it { should contain "server     localhost:3001" }
-   it { should contain "server     localhost:3002" }
-   it { should_not contain "server     localhost:3003" }
+   it { is_expected.to be_file }
+   it { is_expected.to contain "server     localhost:3000" }
+   it { is_expected.to contain "server     localhost:3001" }
+   it { is_expected.to contain "server     localhost:3002" }
+   it { is_expected.not_to contain "server     localhost:3003" }
   end
 
   describe file('/etc/nginx/sites-available/rack.puppetlabs.com.conf') do
-    it { should be_file }
-    it { should contain "proxy_pass            http://puppet_rack_app;" }
+    it { is_expected.to be_file }
+    it { is_expected.to contain "proxy_pass            http://puppet_rack_app;" }
   end
 
 end

spec/acceptance/nginx_vhost_spec.rb

@@ -19,22 +19,22 @@ describe "nginx::resource::vhost define:" do
     end
 
     describe file('/etc/nginx/sites-available/www.puppetlabs.com.conf') do
-      it { should be_file }
-      it { should contain "www.puppetlabs.com" }
+      it { is_expected.to be_file }
+      it { is_expected.to contain "www.puppetlabs.com" }
     end
 
     describe file('/etc/nginx/sites-enabled/www.puppetlabs.com.conf') do
-      it { should be_linked_to '/etc/nginx/sites-available/www.puppetlabs.com.conf' }
+      it { is_expected.to be_linked_to '/etc/nginx/sites-available/www.puppetlabs.com.conf' }
     end
 
     describe service('nginx') do
-      it { should be_running }
+      it { is_expected.to be_running }
     end
 
     it 'should answer to www.puppetlabs.com' do
       shell("/usr/bin/curl http://www.puppetlabs.com:80") do |r|
-        r.stdout.should == "Hello from www\n"
-        r.exit_code.should be_zero
+        expect(r.stdout).to eq("Hello from www\n")
+        expect(r.exit_code).to be_zero
       end
     end
   end
@@ -60,30 +60,30 @@ describe "nginx::resource::vhost define:" do
     end
 
     describe file('/etc/nginx/sites-available/www.puppetlabs.com.conf') do
-      it { should be_file }
-      it { should contain "ssl on;" }
+      it { is_expected.to be_file }
+      it { is_expected.to contain "ssl on;" }
     end
 
     describe file('/etc/nginx/sites-enabled/www.puppetlabs.com.conf') do
-      it { should be_linked_to '/etc/nginx/sites-available/www.puppetlabs.com.conf' }
+      it { is_expected.to be_linked_to '/etc/nginx/sites-available/www.puppetlabs.com.conf' }
     end
 
     describe service('nginx') do
-      it { should be_running }
+      it { is_expected.to be_running }
     end
 
     it 'should answer to http://www.puppetlabs.com' do
       shell("/usr/bin/curl http://www.puppetlabs.com:80") do |r|
-        r.stdout.should == "Hello from www\n"
-        r.exit_code.should == 0
+        expect(r.stdout).to eq("Hello from www\n")
+        expect(r.exit_code).to eq(0)
       end
     end
 
     it 'should answer to https://www.puppetlabs.com' do
       # use --insecure because it's a self-signed cert
       shell("/usr/bin/curl --insecure https://www.puppetlabs.com:443") do |r|
-        r.stdout.should == "Hello from www\n"
-        r.exit_code.should == 0
+        expect(r.stdout).to eq("Hello from www\n")
+        expect(r.exit_code).to eq(0)
       end
     end
   end