From f84647c64e5617e3f96f4e55ee1045dd41d29a97 Mon Sep 17 00:00:00 2001
From: James Mead <james@floehopper.org>
Date: Mon, 5 May 2008 11:08:38 +0000
Subject: [PATCH] Improved implementation of ExecutionPoint in order to get
 better test error messages when no backtrace is supplied or an empty
 backtrace is supplied.

---
 test/execution_point.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/execution_point.rb b/test/execution_point.rb
index 33c85699e..5824d2aad 100644
--- a/test/execution_point.rb
+++ b/test/execution_point.rb
@@ -11,10 +11,12 @@ def initialize(backtrace)
   end
   
   def file_name
+    return "unknown" unless @backtrace && @backtrace.first
     /\A(.*?):\d+/.match(@backtrace.first)[1]
   end
   
   def line_number
+    return "unknown" unless @backtrace && @backtrace.first
     Integer(/\A.*?:(\d+)/.match(@backtrace.first)[1])
   end
 
@@ -24,7 +26,7 @@ def ==(other)
   end
   
   def to_s
-    "file: #{file_name} line: #{line_number}"
+    "file: #{file_name}; line: #{line_number}"
   end
   
   def inspect