[UI] Allow to disable wrapping

lib/cocoapods/user_interface.rb

@@ -23,6 +23,12 @@ module Pod
       attr_accessor :title_level
       attr_accessor :warnings
 
+      # @return [Bool] Whether the wrapping of the strings to the width of the
+      #         terminal should be disabled.
+      #
+      attr_accessor :disable_wrap
+      alias_method  :disable_wrap?, :disable_wrap
+
       # Prints a title taking an optional verbose prefix and
       # a relative indentation valid for the UI action in the passed
       # block.
@@ -254,12 +260,16 @@ module Pod
       # terminal is too small a width of 80 is assumed.
       #
       def wrap_string(txt, indent = '')
+        if disable_wrap
+          txt
+        else
           width = `stty size`.split(' ')[1].to_i - indent.length
           width = 80 unless width >= 10
           txt.strip.gsub(/(.{1,#{width}})( +|$)\n?|(.{#{width}})/, indent + "\\1\\3\n")
         end
       end
     end
+  end
   UI = UserInterface
 
   # Redirects cocoapods-core UI.

spec/spec_helper/user_interface.rb

 module Pod
 
-  # @note as some outputs wraps strings
+  # Disable the wrapping so the output is deterministic in the tests.
+  #
+  UI.disable_wrap = true
+
+  # Redirects the messages to an internal store.
   #
   module UI
     @output = ''
@@ -10,17 +14,12 @@ module Pod
       attr_accessor :output
       attr_accessor :warnings
 
-      # @todo Allow to specify whether the text should be wrapped with an
-      #       environment variable and remove the new feed replacement.
-
       def puts(message = '')
-        # Wrapping can bite in tests.
-        @output << "#{message}".gsub(/\n/,'')
+        @output << "#{message}"
       end
 
       def warn(message = '', actions = [])
-        # Wrapping can bite in tests.
-        @warnings << "#{message}".gsub(/\n/,'')
+        @warnings << "#{message}"
       end
     end
   end