tab: allow load from file content

1 files changed, 5 insertions, 1 deletions

diff --git a/Library/Homebrew/tab.rb b/Library/Homebrew/tab.rb
index efc746628..85252ab60 100644
--- a/Library/Homebrew/tab.rb
+++ b/Library/Homebrew/tab.rb
@@ -31,7 +31,11 @@ class Tab < OpenStruct
   end
 
   def self.from_file path
-    attributes = Utils::JSON.load(File.read(path))
+    from_file_content(File.read(path), path)
+  end
+
+  def self.from_file_content content, path
+    attributes = Utils::JSON.load(content)
     attributes["tabfile"] = path
     attributes["source"] ||= {}