Warn when a pod that was added or changed includes script phases

CHANGELOG.md

@@ -30,6 +30,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Bug Fixes
 
+* Warn when a pod that was added or changed includes script phases  
+  [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
+  [#7110](https://github.com/CocoaPods/CocoaPods/pull/7110)
+
 * Build pod targets with script phases and integrate them properly  
   [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
   [#7104](https://github.com/CocoaPods/CocoaPods/pull/7104)

lib/cocoapods/installer.rb

@@ -355,7 +355,7 @@ module Pod
     end
 
     # Install the Pods. If the resolver indicated that a Pod should be
-    # installed and it exits, it is removed an then reinstalled. In any case if
+    # installed and it exits, it is removed and then reinstalled. In any case if
     # the Pod doesn't exits it is installed.
     #
     # @return [void]
@@ -423,6 +423,7 @@ module Pod
       unlock_pod_sources
       run_plugins_post_install_hooks
       warn_for_deprecations
+      warn_for_installed_script_phases
       lock_pod_sources
       print_post_install_message
     end
@@ -523,6 +524,24 @@ module Pod
       end
     end
 
+    # Prints a warning for any pods that included script phases
+    #
+    # @return [void]
+    #
+    def warn_for_installed_script_phases
+      pods_to_install = sandbox_state.added | sandbox_state.changed
+      pod_targets.each do |pod_target|
+        spec = pod_target.root_spec
+        if pods_to_install.include?(spec.name)
+          script_phase_count = pod_target.script_phases.count
+          unless script_phase_count.zero?
+            UI.warn "#{spec.name} has added #{pod_target.script_phases.count} #{'script phase'.pluralize(script_phase_count)}. " \
+              'Please inspect before executing a build. See `https://guides.cocoapods.org/syntax/podspec.html#script_phases` for more information.'
+          end
+        end
+      end
+    end
+
     # Writes the Podfile and the lock files.
     #
     # @todo   Pass the checkout options to the Lockfile.
@@ -626,19 +645,6 @@ module Pod
 
     #-------------------------------------------------------------------------#
 
-    public
-
-    # @return [Array<Library>] The targets of the development pods generated by
-    #         the installation process.
-    #
-    def development_pod_targets
-      pod_targets.select do |pod_target|
-        sandbox.development_pods.keys.include?(pod_target.pod_name)
-      end
-    end
-
-    #-------------------------------------------------------------------------#
-
     private
 
     # @!group Private helpers

lib/cocoapods/target/pod_target.rb

@@ -185,10 +185,16 @@ module Pod
       end
     end
 
+    # @return [Array<Hash{Symbol=>String}>] An array of hashes where each hash represents a single script phase.
+    #
+    def script_phases
+      spec_consumers.map(&:script_phases).flatten
+    end
+
     # @return [Boolean] Whether the target contains any script phases.
     #
     def contains_script_phases?
-      !spec_consumers.map(&:script_phases).flatten.empty?
+      !script_phases.empty?
     end
 
     # @return [Hash{Array => Specification}] a hash where the keys are the test native targets and the value

spec/unit/installer_spec.rb

@@ -514,6 +514,35 @@ module Pod
           end.message.should.include 'Could not install \'RandomPod\' pod. There is no target that supports it.'
         end
 
+        it 'prints a warning for installed pods that included script phases' do
+          spec = fixture_spec('coconut-lib/CoconutLib.podspec')
+          spec.test_specs.first.script_phase = { :name => 'Hello World', :script => 'echo "Hello World"' }
+          pod_target = PodTarget.new([spec, *spec.test_specs], [fixture_target_definition], config.sandbox)
+          pod_target.stubs(:platform).returns(:ios)
+          sandbox_state = Installer::Analyzer::SpecsState.new
+          sandbox_state.added << 'CoconutLib'
+          @installer.stubs(:pod_targets).returns([pod_target])
+          @installer.stubs(:root_specs).returns([spec])
+          @installer.stubs(:sandbox_state).returns(sandbox_state)
+          @installer.send(:warn_for_installed_script_phases)
+          UI.warnings.should.include 'CoconutLib has added 1 script phase. Please inspect before executing a build. ' \
+            'See `https://guides.cocoapods.org/syntax/podspec.html#script_phases` for more information.'
+        end
+
+        it 'does not print a warning for already installed pods that include script phases' do
+          spec = fixture_spec('coconut-lib/CoconutLib.podspec')
+          spec.test_specs.first.script_phase = { :name => 'Hello World', :script => 'echo "Hello World"' }
+          pod_target = PodTarget.new([spec, *spec.test_specs], [fixture_target_definition], config.sandbox)
+          pod_target.stubs(:platform).returns(:ios)
+          sandbox_state = Installer::Analyzer::SpecsState.new
+          sandbox_state.unchanged << 'CoconutLib'
+          @installer.stubs(:pod_targets).returns([pod_target])
+          @installer.stubs(:root_specs).returns([spec])
+          @installer.stubs(:sandbox_state).returns(sandbox_state)
+          @installer.send(:warn_for_installed_script_phases)
+          UI.warnings.should.be.empty
+        end
+
         #--------------------------------------#
 
         describe '#clean' do