[Resolver] Improve error message when specs not found

CHANGELOG.md

@@ -28,6 +28,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   [Alfredo Delli Bovi](https://github.com/adellibovi)
   [#6033](https://github.com/CocoaPods/CocoaPods/issues/6033)
 
+* Provide better error message when spec not found  
+  [Alfredo Delli Bovi](https://github.com/adellibovi)
+  [#6033](https://github.com/CocoaPods/CocoaPods/issues/6033)
+
 
 ## 1.2.1.beta.1 (2017-03-08)
 

lib/cocoapods/installer/analyzer.rb

@@ -156,6 +156,11 @@ module Pod
 
       private
 
+      # @return [Bool] Whether the analysis has updated sources repositories.
+      #
+      attr_accessor :specs_updated
+      alias_method :specs_updated?, :specs_updated
+
       def validate_podfile!
         validator = Installer::PodfileValidator.new(podfile)
         validator.validate
@@ -222,6 +227,7 @@ module Pod
             UI.message "Skipping `#{source.name}` update because the repository is not a git source repository."
           end
         end
+        @specs_updated = true
       end
 
       private
@@ -716,6 +722,7 @@ module Pod
         specs_by_target = nil
         UI.section "Resolving dependencies of #{UI.path(podfile.defined_in_file) || 'Podfile'}" do
           resolver = Resolver.new(sandbox, podfile, locked_dependencies, sources)
+          resolver.specs_updated = specs_updated?
           specs_by_target = resolver.resolve
           specs_by_target.values.flatten(1).each(&:validate_cocoapods_version)
         end

lib/cocoapods/resolver.rb

@@ -35,6 +35,11 @@ module Pod
     #
     attr_accessor :sources
 
+    # @return [Bool] Whether the resolver has sources repositories up-to-date.
+    #
+    attr_accessor :specs_updated
+    alias specs_updated? specs_updated
+
     # Init a new Resolver
     #
     # @param  [Sandbox] sandbox @see sandbox
@@ -438,9 +443,11 @@ module Pod
               dependencies = conflicts.count == 1 ? 'dependency' : 'dependencies'
               message << "\n\nNone of your spec sources contain a spec satisfying "\
                 "the #{dependencies}: `#{conflicts.join(', ')}`." \
-                "\n\nYou have either:" \
-                "\n * out-of-date source repos which you can update with `pod repo update`." \
-                "\n * mistyped the name or version." \
+                "\n\nYou have either:"
+              unless specs_updated?
+                message << "\n * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`."
+              end
+              message << "\n * mistyped the name or version." \
                 "\n * not added the source repo that hosts the Podspec to your Podfile." \
                 "\n\nNote: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by default."
 

spec/unit/resolver_spec.rb

@@ -378,9 +378,28 @@ module Pod
         e.message.should.match(/`AFNetworking \(= 999\.999\.999\)` required by `Podfile`/)
         e.message.should.match(/None of your spec sources contain a spec satisfying the dependency: `AFNetworking \(= 999\.999\.999\)`./)
         e.message.should.match(/You have either:/)
-        e.message.should.match(/ * out-of-date source repos which you can update with `pod repo update`/)
+        e.message.should.match(/ * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`./)
+        e.message.should.match(/ * mistyped the name or version./)
+        e.message.should.match(/ * not added the source repo that hosts the Podspec to your Podfile./)
+        e.message.should.match(/Note: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by default./)
+        e.exit_status.should.equal(31)
+      end
+
+      it 'raises if repo are updated and no such version of a dependency exists' do
+        podfile = Podfile.new do
+          platform :ios
+          pod 'AFNetworking', '999.999.999'
+        end
+        resolver = Resolver.new(config.sandbox, podfile, empty_graph, config.sources_manager.all)
+        resolver.specs_updated = true
+        e = lambda { resolver.resolve }.should.raise NoSpecFoundError
+        e.message.should.match(/Unable to satisfy the following requirements/)
+        e.message.should.match(/`AFNetworking \(= 999\.999\.999\)` required by `Podfile`/)
+        e.message.should.match(/None of your spec sources contain a spec satisfying the dependency: `AFNetworking \(= 999\.999\.999\)`./)
+        e.message.should.match(/You have either:/)
+        e.message.should.not.match(/ * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`./)
+        e.message.should.match(/ * mistyped the name or version./)
         e.message.should.match(/ * not added the source repo that hosts the Podspec to your Podfile./)
-        e.message.should.match(/ * out-of-date source repos which you can update with `pod repo update`/)
         e.message.should.match(/Note: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by default./)
         e.exit_status.should.equal(31)
       end
@@ -400,9 +419,9 @@ module Pod
         e.message.should.match(/None of your spec sources contain a spec satisfying the dependencies:/)
         e.message.should.match(/`AFNetworking \(= 3.0.1\), AFNetworking \(= 1.4\)`/)
         e.message.should.match(/You have either:/)
-        e.message.should.match(/ * out-of-date source repos which you can update with `pod repo update`/)
+        e.message.should.match(/ * out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`./)
+        e.message.should.match(/ * mistyped the name or version./)
         e.message.should.match(/ * not added the source repo that hosts the Podspec to your Podfile./)
-        e.message.should.match(/ * out-of-date source repos which you can update with `pod repo update`/)
         e.message.should.match(/Note: as of CocoaPods 1.0, `pod repo update` does not happen on `pod install` by default./)
         e.exit_status.should.equal(31)
       end