I'm getting hatred to this buggy tool named CocoaPods...

Podfile

# CocoaPods could completely break up your MyProject.xcodeproj to the state where even CocoaPods itself can't fix it,
# (for example, losing PODS_ROOT configulations)
# if you specify some broken Podfile. Adding `target "xxx" do ~ end` structure to your Podfile might be a trigger of this.
# So here's a tip: DO NOT ADD `target` unless absolutely nessessary.

#--------------------------------------------------------------------------------
# WORKED
platform :ios, "7.0"

target "MyProject" do
  pod 'Masonry', '~> 0.4'
end

target "MyProjectTests" do
  pod 'Masonry', '~> 0.4'
end

#--------------------------------------------------------------------------------
# WORKED
platform :ios, "7.0"

pod 'Masonry', '~> 0.4'

#--------------------------------------------------------------------------------
# NOT TESTED (perhaps broken)
platform :ios, "7.0"

target "MyProject" do
  pod 'Masonry', '~> 0.4'
end

#--------------------------------------------------------------------------------
# BROKEN, DO NOT DO THIS
platform :ios, "7.0"

pod 'Masonry', '~> 0.4'

target "MyProject" do
end

target "MyProjectTests" do
end