[Installer] Validate the configs a pos is whitelisted for.

Gemfile.lock

@@ -7,7 +7,7 @@ GIT
 
 GIT
   remote: https://github.com/CocoaPods/Core.git
-  revision: 73c5a6b0c6331c4bfdc0d58360abf0f3f13beb56
+  revision: c53a14e82afa7bf03bcc6175c747a173d00c69b4
   branch: lookback-pods-by-config
   specs:
     cocoapods-core (0.29.0)
@@ -103,7 +103,7 @@ GEM
     escape (0.0.4)
     ffi (1.9.3)
     fuzzy_match (2.0.4)
-    github-markup (1.0.0)
+    github-markup (1.0.1)
     i18n (0.6.9)
     json (1.8.1)
     json_pure (1.8.1)

lib/cocoapods/installer.rb

@@ -94,6 +94,7 @@ module Pod
     def resolve_dependencies
       UI.section "Analyzing dependencies" do
         analyze
+        validate_whitelisted_configurations
         prepare_for_legacy_compatibility
         clean_sandbox
       end
@@ -174,6 +175,19 @@ module Pod
       @aggregate_targets = analyzer.result.targets
     end
 
+    # @raise  Raises an informative if the hooks raises.
+    def validate_whitelisted_configurations
+      whitelisted_configs = pod_targets.map do |target|
+        target.target_definition.all_whitelisted_configurations
+      end.flatten.uniq
+      all_user_configurations = analysis_result.all_user_build_configurations.keys
+
+      remainder = whitelisted_configs - all_user_configurations
+      unless remainder.empty?
+        raise Informative, "Unknown #{'configuration'.pluralize(remainder.size)} whitelisted: #{remainder.sort.to_sentence}."
+      end
+    end
+
     # Prepares the Pods folder in order to be compatible with the most recent
     # version of CocoaPods.
     #

lib/cocoapods/installer/analyzer.rb

@@ -181,7 +181,7 @@ module Pod
           else
             target.client_root = config.installation_root
             target.user_target_uuids = []
-            target.user_build_configurations = {}
+            target.user_build_configurations = target_definition.build_configurations || {}
             if target_definition.platform.name == :osx
               target.archs = '$(ARCHS_STANDARD_64_BIT)'
             end

spec/unit/installer_spec.rb

@@ -124,6 +124,28 @@ module Pod
 
       #--------------------------------------#
 
+      describe "#validate_whitelisted_configurations" do
+        it "raises when a whitelisted configuration doesn’t exist in the user's project" do
+          target_definition = @installer.podfile.target_definitions.values.first
+          target_definition.whitelist_pod_for_configuration('JSONKit', 'YOLO')
+          @installer.send(:analyze)
+          should.raise Informative do
+            @installer.send(:validate_whitelisted_configurations)
+          end
+        end
+
+        it "does not raise if all whitelisted configurations exist in the user's project" do
+          target_definition = @installer.podfile.target_definitions.values.first
+          target_definition.whitelist_pod_for_configuration('JSONKit', 'Test')
+          @installer.send(:analyze)
+          should.not.raise do
+            @installer.send(:validate_whitelisted_configurations)
+          end
+        end
+      end
+
+      #--------------------------------------#
+
       describe "#clean_sandbox" do
 
         before do