Add spec & changelog

CHANGELOG.md

@@ -17,7 +17,6 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   [Marcelo Fabri](https://github.com/marcelofabri)
   [#4487](https://github.com/CocoaPods/CocoaPods/pull/4487)
 
-* Improve `pod search` performance while using _`--full`_ flag  
 * Improve sorting algorithm for `pod search`.  
   [Muhammed Yavuz Nuzumlalı](https://github.com/manuyavuz)
   [cocoapods-search#12](https://github.com/CocoaPods/cocoapods-search/issues/12)
@@ -76,6 +75,9 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Bug Fixes
 
+* Prevent installer to be run from inside sandbox directory.  
+  [Muhammed Yavuz Nuzumlalı](https://github.com/manuyavuz)
+  
 * Improve repo lint error message when no repo found with given name.  
   [Muhammed Yavuz Nuzumlalı](https://github.com/manuyavuz)
   [#4142](https://github.com/CocoaPods/CocoaPods/issues/4142)

spec/unit/installer_spec.rb

@@ -165,6 +165,14 @@ module Pod
         UI.warnings.should.include 'deprecated in favor of AFNetworking'
         UI.warnings.should.include 'BlocksKit has been deprecated'
       end
+
+      it 'raises if command is run inside sandbox directory' do
+        Dir.chdir(@installer.sandbox.root) do
+          should.raise Informative do
+            @installer.install!
+          end.message.should.match %r{should.*run.*outside.*Pods directory.*Current directory.*/Pods}m
+        end
+      end
     end
 
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