From 7312b4a1a43c77c819b5d02db574572d6d6e4656 Mon Sep 17 00:00:00 2001
From: Mike McQuaid
Date: Thu, 16 Oct 2014 10:28:51 +0100
Subject: brew-test-bot: truncate output to 1MB.

---
 Library/Homebrew/cmd/test-bot.rb | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'Library')

diff --git a/Library/Homebrew/cmd/test-bot.rb b/Library/Homebrew/cmd/test-bot.rb
index d837b1b36..a001d461f 100644
--- a/Library/Homebrew/cmd/test-bot.rb
+++ b/Library/Homebrew/cmd/test-bot.rb
@@ -30,6 +30,7 @@ require 'rexml/cdata'
 
 module Homebrew
   EMAIL_SUBJECT_FILE = "brew-test-bot.#{MacOS.cat}.email.txt"
+  BYTES_IN_1_MEGABYTE = 1024*1024
 
   def homebrew_git_repo tap=nil
     if tap
@@ -621,7 +622,12 @@ module Homebrew
             if output.respond_to?(:force_encoding) && !output.valid_encoding?
               output.force_encoding(Encoding::UTF_8)
             end
-            output = REXML::CData.new output.delete("\000\a\b\e\f")
+            output = output.delete("\000\a\b\e\f")
+            if output.bytesize > BYTES_IN_1_MEGABYTE
+              output = "truncated output to 1MB:\n" \
+                + output.slice(-BYTES_IN_1_MEGABYTE, BYTES_IN_1_MEGABYTE)
+            end
+            output = REXML::CData.new output
             if step.passed?
               system_out = testcase.add_element 'system-out'
               system_out.text = output
-- 
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