Update CocoaPods specs to run on Linux

.travis.yml

+language: ruby
 cache: bundler
 
 matrix:
@@ -37,6 +38,8 @@ before_install:
   - if [ "$TRAVIS_RUBY_VERSION" = "system" ]; then sudo gem update --system; fi
 
 before_script:
+  - git config --global user.email "tests@cocoapods.org"
+  - git config --global user.name "CocoaPods Tests"
   - bundle exec pod env
 
 script:

lib/cocoapods/validator.rb

@@ -518,7 +518,7 @@ module Pod
     # @return [void]
     #
     def build_pod
-      if Executable.which('xcodebuild').nil?
+      if !xcodebuild_available?
         UI.warn "Skipping compilation with `xcodebuild' because it can't be found.\n".yellow
       else
         UI.message "\nBuilding with xcodebuild.\n".yellow do
@@ -549,6 +549,10 @@ module Pod
       end
     end
 
+    def xcodebuild_available?
+      !Executable.which('xcodebuild').nil?
+    end
+
     FILE_PATTERNS = %i(source_files resources preserve_paths vendored_libraries
                        vendored_frameworks public_header_files preserve_paths
                        private_header_files resource_bundles).freeze

spec/unit/generator/info_plist_file_spec.rb

@@ -56,7 +56,7 @@ module Pod
       generator.save_as(file)
       `plutil -lint #{file}`
       $?.should.be.success
-    end
+    end if Executable.which('plutil')
 
     it 'generates a correct Info.plist file' do
       generator = Generator::InfoPlistFile.new(mock('Target', :platform => stub(:name => :ios)))

spec/unit/sandbox_spec.rb

@@ -84,7 +84,7 @@ module Pod
 
       it 'handles symlinks in /tmp' do
         tmp_sandbox = Pod::Sandbox.new('/tmp/CocoaPods')
-        tmp_sandbox.root.should.be == Pathname.new('/private/tmp/CocoaPods')
+        tmp_sandbox.root.should.be == Pathname.new('/tmp/CocoaPods').realpath
         require 'fileutils'
         FileUtils.rm_rf(tmp_sandbox.root)
       end

spec/unit/validator_spec.rb

@@ -17,6 +17,7 @@ module Pod
   describe Validator do
     before do
       Validator.any_instance.stubs(:xcodebuild).returns('')
+      Validator.any_instance.stubs(:xcodebuild_available?).returns(true)
     end
 
     # @return [void]
@@ -413,7 +414,6 @@ module Pod
         git = Executable.which(:git)
         Executable.stubs(:which).with('git').returns(git)
         Executable.stubs(:which).with(:xcrun)
-        Executable.expects(:which).with('xcodebuild').times(4).returns('/usr/bin/xcodebuild')
         status = mock
         status.stubs(:success?).returns(false)
         validator.stubs(:_xcodebuild).returns(['Output', status])
@@ -434,7 +434,6 @@ module Pod
         Executable.stubs(:which).with('git').returns(git)
         Executable.stubs(:capture_command).with('git', ['config', '--get', 'remote.origin.url'], :capture => :out).returns(['https://github.com/CocoaPods/Specs.git'])
         Executable.stubs(:which).with(:xcrun)
-        Executable.expects(:which).with('xcodebuild').times(4).returns('/usr/bin/xcodebuild')
         command = ['clean', 'build', '-workspace', File.join(validator.validation_dir, 'App.xcworkspace'), '-scheme', 'App', '-configuration', 'Release']
         Executable.expects(:capture_command).with('xcodebuild', command, :capture => :merge).once.returns(['', stub(:success? => true)])
         args = %w(CODE_SIGN_IDENTITY=- -sdk appletvsimulator) + Fourflusher::SimControl.new.destination('Apple TV 1080p')