[Command::Outdated] Fix for pods with external sources.

Closes #954

CHANGELOG.md

@@ -6,6 +6,11 @@
   targets. This is useful for libraries which conditionally expose interfaces.
   [#903](https://github.com/CocoaPods/CocoaPods/issues/903)
 
+###### Bug fixes
+
+* Fix issue related to `pod outdated` external sources.
+  [#954](https://github.com/CocoaPods/CocoaPods/issues/954)
+
 ## 0.18.0
 [CocoaPods](https://github.com/CocoaPods/CocoaPods/compare/0.17.2...0.18.0)
 • [cocoapods-core](https://github.com/CocoaPods/Core/compare/0.17.2...0.18.0)

lib/cocoapods/command/outdated.rb

@@ -19,6 +19,7 @@ module Pod
 
       # @todo the command report new dependencies added to the Podfile as
       #       updates.
+      #
       # @todo fix.
       #
       def run
@@ -30,6 +31,7 @@ module Pod
         updates = []
         pods.each do |pod_name|
           set = SourcesManager.search(Dependency.new(pod_name))
+          next unless set
           source_version = set.versions.first
           lockfile_version = lockfile.version(pod_name)
           if source_version > lockfile_version
@@ -42,7 +44,7 @@ module Pod
         else
           UI.section "The following updates are available:" do
             updates.each do |(name, from_version, to_version)|
-              UI.message "- #{name} #{from_version} -> #{to_version}"
+              UI.puts "- #{name} #{from_version} -> #{to_version}"
             end
           end
         end

lib/cocoapods/sources_manager.rb

@@ -38,11 +38,7 @@ module Pod
       # @raise  If no source including the set can be found.
       #
       def search(dependency)
-        set = aggregate.search(dependency)
-        unless set
-          raise Informative, "Unable to find a pod named `#{dependency.name}`"
-        end
-        set
+        aggregate.search(dependency)
       end
 
       # Search all the sources with the given search term.

spec/unit/sources_manager_spec.rb

@@ -32,10 +32,9 @@ module Pod
         set.name.should == 'BananaLib'
       end
 
-      it "raises if it not able to find a pod for the given dependency" do
-        should.raise Informative do
+      it "returns nil if it is not able to find a pod for the given dependency" do
         set = SourcesManager.search(Dependency.new('Windows-Lib'))
-        end.message.should.match /Unable to find.*Windows-Lib/
+        set.should.be.nil
       end
 
       it "searches sets by name" do