[Validator] No master specs cloning when not needed

CHANGELOG.md

@@ -12,7 +12,9 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Bug Fixes
 
-* None.  
+* No master specs cloning when not needed for `pod lib lint`.  
+  [Alfredo Delli Bovi](https://github.com/adellibovi)
+  [#6154](https://github.com/CocoaPods/CocoaPods/issues/6154)
 
 
 ## 1.2.1.rc.1 (2017-04-05)

lib/cocoapods/installer.rb

@@ -71,6 +71,7 @@ def initialize(sandbox, podfile, lockfile = nil)
       @lockfile = lockfile
 
       @use_default_plugins = true
+      @has_dependencies = true
     end
 
     # @return [Hash, Boolean, nil] Pods that have been requested to be
@@ -80,6 +81,11 @@ def initialize(sandbox, podfile, lockfile = nil)
     #
     attr_accessor :update
 
+    # @return [Boolean] Whether it has dependencies. Defaults to true.
+    #
+    attr_accessor :has_dependencies
+    alias_method :has_dependencies?, :has_dependencies
+
     # @return [Boolean] Whether the spec repos should be updated.
     #
     attr_accessor :repo_update
@@ -240,6 +246,7 @@ def analyze(analyzer = create_analyzer)
     def create_analyzer
       Analyzer.new(sandbox, podfile, lockfile).tap do |analyzer|
         analyzer.installation_options = installation_options
+        analyzer.has_dependencies = has_dependencies?
       end
     end
 

lib/cocoapods/installer/analyzer.rb

@@ -45,6 +45,7 @@ def initialize(sandbox, podfile, lockfile = nil)
 
         @update = false
         @allow_pre_downloads = true
+        @has_dependencies = true
       end
 
       # Performs the analysis.
@@ -152,6 +153,15 @@ def update_mode
       attr_accessor :allow_pre_downloads
       alias_method :allow_pre_downloads?, :allow_pre_downloads
 
+      # @return [Bool] Whether the analysis has dependencies and thus
+      #         sources must be configured.
+      #
+      # @note   This is used by the `pod lib lint` command to prevent
+      #         update of specs when not needed.
+      #
+      attr_accessor :has_dependencies
+      alias_method :has_dependencies?, :has_dependencies
+
       #-----------------------------------------------------------------------#
 
       private
@@ -819,11 +829,11 @@ def sources
 
           # Add any sources specified using the :source flag on individual dependencies.
           dependency_sources = podfile.dependencies.map(&:podspec_repo).compact
-
           all_dependencies_have_sources = dependency_sources.count == podfile.dependencies.count
+
           if all_dependencies_have_sources
             sources = dependency_sources
-          elsif sources.empty?
+          elsif has_dependencies? && sources.empty?
             sources = ['https://github.com/CocoaPods/Specs.git']
           else
             sources += dependency_sources

lib/cocoapods/validator.rb

@@ -28,8 +28,12 @@ class Validator
     #         the Source URLs to use in creating a {Podfile}.
     #
     def initialize(spec_or_path, source_urls)
-      @source_urls = source_urls.map { |url| config.sources_manager.source_with_name_or_url(url) }.map(&:url)
       @linter = Specification::Linter.new(spec_or_path)
+      @source_urls = if @linter.spec && @linter.spec.dependencies.empty?
+                       []
+                     else
+                       source_urls.map { |url| config.sources_manager.source_with_name_or_url(url) }.map(&:url)
+                     end
     end
 
     #-------------------------------------------------------------------------#
@@ -405,6 +409,7 @@ def download_pod
       sandbox = Sandbox.new(config.sandbox_root)
       @installer = Installer.new(sandbox, podfile)
       @installer.use_default_plugins = false
+      @installer.has_dependencies = !spec.dependencies.empty?
       %i(prepare resolve_dependencies download_dependencies).each { |m| @installer.send(m) }
       @file_accessor = @installer.pod_targets.flat_map(&:file_accessors).find { |fa| fa.spec.name == consumer.spec.name }
     end

spec/unit/validator_spec.rb

@@ -372,15 +372,46 @@ def podspec_path(name = 'JSONKit', version = '1.4')
         end
       end
 
-      it 'repects the source_urls parameter' do
+      it 'empties sources when no dependencies' do
         sources = %w(master https://github.com/CocoaPods/Specs.git)
         Command::Repo::Add.any_instance.stubs(:run)
         validator = Validator.new(podspec_path, sources)
         validator.stubs(:validate_url)
         podfile = validator.send(:podfile_from_spec, :ios, '5.0')
+        podfile.sources.should == %w()
+      end
+
+      it 'repects the source_urls parameter when there are dependencies' do
+        podspec = stub_podspec(/.*name.*/, '"name": "SBJson",').gsub(/.*version.*/, '"version": "3.2",')
+        file = write_podspec(podspec, 'SBJson.podspec.json')
+        spec = Specification.from_file(file)
+        set = mock
+        set.stubs(:all_specifications).returns([spec])
+        Source::Aggregate.any_instance.stubs(:search).with(Dependency.new('SBJson', '~> 3.2')).returns(set)
+
+        podspec = stub_podspec(/.*name.*/, '"name": "ZKit",')
+        podspec.gsub!(/.*requires_arc.*/, '"dependencies": { "SBJson": [ "~> 3.2" ] }, "requires_arc": false')
+        file = write_podspec(podspec, 'ZKit.podspec.json')
+
+        spec = Specification.from_file(file)
+
+        sources = %w(master https://github.com/CocoaPods/Specs.git)
+        Command::Repo::Add.any_instance.stubs(:run)
+        validator = Validator.new(spec, sources)
+        validator.stubs(:validate_url)
+        podfile = validator.send(:podfile_from_spec, :ios, '5.0')
         podfile.sources.should == %w(https://github.com/CocoaPods/Specs.git)
       end
 
+      it 'avoids creation of sources when no dependencies' do
+        sources = %w(master https://github.com/CocoaPods/Specs.git)
+        config.sources_manager.expects(:find_or_create_source_with_url).never
+        Command::Repo::Add.any_instance.stubs(:run)
+        validator = Validator.new(podspec_path, sources)
+        validator.stubs(:validate_url)
+        validator.validate
+      end
+
       it 'uses xcodebuild to generate warnings' do
         validator = Validator.new(podspec_path, config.sources_manager.master.map(&:url))
         validator.stubs(:check_file_patterns)