Correctly set deployment target for non library specs even if the roo…

…t spec does not specify one.

CHANGELOG.md

@@ -12,6 +12,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Bug Fixes
 
+* Correctly set deployment target for non library specs even if the root spec does not specify one.  
+  [Dimitris Koutsogiorgas](https://github.com/dnkoutso)
+  [#9153](https://github.com/CocoaPods/CocoaPods/pull/9153)g
+
 * Make `APPLICATION_EXTENSION_API_ONLY` build setting not break when performing a cached incremental install.  
   [Igor Makarov](https://github.com/igor-makarov)
   [#8967](https://github.com/CocoaPods/CocoaPods/issues/8967)

lib/cocoapods/target/pod_target.rb

@@ -415,12 +415,12 @@ def resource_paths
 
     # @param [Specification] spec The non library spec to calculate the deployment target for.
     #
-    # @return [String] The deployment target to use for the non library spec. If the spec provides one then that is the
-    #         one used otherwise the one for the whole target is used.
+    # @return [String] The deployment target to use for the non library spec. If the non library spec explicitly
+    #         specifies one then this is the one used otherwise the one that was determined by the analyzer is used.
     #
     def deployment_target_for_non_library_spec(spec)
       raise ArgumentError, 'Must be a non library spec.' unless spec.non_library_specification?
-      spec.deployment_target(platform.name)
+      spec.deployment_target(platform.name.to_s) || platform.deployment_target.to_s
     end
 
     # Returns the corresponding native product type to use given the test type.

spec/unit/target/pod_target_spec.rb

@@ -753,6 +753,14 @@ module Pod
           @pod_target.deployment_target_for_non_library_spec(@watermelon_spec.test_specs.first).to_s.should == '8.0'
           @pod_target.deployment_target_for_non_library_spec(@watermelon_spec.app_specs.first).to_s.should == '8.0'
         end
+
+        it 'returns the determined deployment target even if the podspec does not explicitly specify one' do
+          # The coconut spec does not specify a deployment target at all. We expect the deployment target for the non
+          # library spec to be set with the one by the pod target itself instead.
+          coconut_spec = fixture_spec('coconut-lib/CoconutLib.podspec')
+          pod_target = fixture_pod_target(coconut_spec, false, {}, [], Platform.new(:ios, '4.3'))
+          pod_target.deployment_target_for_non_library_spec(coconut_spec.test_specs.first).to_s.should == '4.3'
+        end
       end
 
       describe 'script phases support' do