Fix source specs to test all key permutations

Previously only one should in each block was being evaluated. This moves each
should to its own block so that all values are tested. It also adds another set
of params so that all useful permutations of key, key_server, and key_content
are generated. It also replaces the previous ternary assignment for param_set
with a hash merge.

spec/defines/source_spec.rb

@@ -29,11 +29,16 @@ describe 'apt::source', :type => :define do
       :key_server         => 'keyserver.debian.com',
       :pin                => '600',
       :key_content        => 'ABCD1234'
+    },
+    {
+      :key                => 'key_name',
+      :key_server         => 'keyserver.debian.com',
+      :key_content        => false,
     }
   ].each do |param_set|
     describe "when #{param_set == {} ? "using default" : "specifying"} class parameters" do
       let :param_hash do
-        param_set == {} ? default_params : params
+        default_params.merge(param_set)
       end
 
       let :params do
@@ -56,9 +61,9 @@ describe 'apt::source', :type => :define do
       it { should contain_apt__params }
 
       it { should contain_file("#{title}.list").with({
-          'path' => filename,
-          'ensure' => "file",
-          'owner'   => "root",
+          'path'      => filename,
+          'ensure'    => "file",
+          'owner'     => "root",
           'group'     => "root",
           'mode'      => 644,
           'content'   => content
@@ -109,23 +114,12 @@ describe 'apt::source', :type => :define do
               "unless"  => "/usr/bin/apt-key list | /bin/grep '#{param_hash[:key]}'",
               "before"  => "File[#{title}.list]"
             })
-            should_not contain_exec("Add key: #{param_hash[:key]} from #{param_hash[:key_server]} for #{title}").with({
-                "command" => "/usr/bin/apt-key adv --keyserver #{param_hash[:key_server]} --recv-keys #{param_hash[:key]}",
-                "unless"  => "/usr/bin/apt-key list | /bin/grep #{param_hash[:key]}",
-                "before"  => "File[#{title}.list]"
-            })
-
           else
             should_not contain_exec("Add key: #{param_hash[:key]} from content for #{title}").with({
                 "command" => "/bin/echo '#{param_hash[:key_content]}' | /usr/bin/apt-key add -",
                 "unless"  => "/usr/bin/apt-key list | /bin/grep '#{param_hash[:key]}'",
                 "before"  => "File[#{title}.list]"
             })
-            should contain_exec("Add key: #{param_hash[:key]} from #{param_hash[:key_server]} for #{title}").with({
-                "command" => "/usr/bin/apt-key adv --keyserver #{param_hash[:key_server]} --recv-keys #{param_hash[:key]}",
-                "unless"  => "/usr/bin/apt-key list | /bin/grep #{param_hash[:key]}",
-                "before"  => "File[#{title}.list]"
-            })
           end
         else
           should_not contain_exec("Add key: #{param_hash[:key]} from content for #{title}").with({
@@ -133,12 +127,30 @@ describe 'apt::source', :type => :define do
             "unless"    => "/usr/bin/apt-key list | /bin/grep '#{param_hash[:key]}'",
             "before"    => "File[#{title}.list]"
           })
+        end
+      }
+
+      it {
+        if param_hash[:key]
+          if param_hash[:key_content]
+            should_not contain_exec("Add key: #{param_hash[:key]} from #{param_hash[:key_server]} for #{title}").with({
+                "command" => "/usr/bin/apt-key adv --keyserver #{param_hash[:key_server]} --recv-keys #{param_hash[:key]}",
+                "unless"  => "/usr/bin/apt-key list | /bin/grep #{param_hash[:key]}",
+                "before"  => "File[#{title}.list]"
+            })
+          else
+            should contain_exec("Add key: #{param_hash[:key]} from #{param_hash[:key_server]} for #{title}").with({
+                "command" => "/usr/bin/apt-key adv --keyserver #{param_hash[:key_server]} --recv-keys #{param_hash[:key]}",
+                "unless"  => "/usr/bin/apt-key list | /bin/grep #{param_hash[:key]}",
+                "before"  => "File[#{title}.list]"
+            })
+          end
+        else
           should_not contain_exec("Add key: #{param_hash[:key]} from #{param_hash[:key_server]} for #{title}").with({
               "command" => "/usr/bin/apt-key adv --keyserver #{param_hash[:key_server]} --recv-keys #{param_hash[:key]}",
               "unless"  => "/usr/bin/apt-key list | /bin/grep #{param_hash[:key]}",
               "before"  => "File[#{title}.list]"
           })
-
         end
       }
     end