A minor fix to catch sqrt Domain error on Win32. Also made rcov task conditional to avoid test/build issues with users that don't have it installed.

git-svn-id: svn+ssh://rubyforge.org/var/svn/mongrel/trunk@219 19e92222-5c0b-0410-8929-a290d50e31e9

lib/mongrel/stats.rb

@@ -74,7 +74,11 @@ class Stats
   # Calculates the standard deviation of the data so far.
   def sd
     # (sqrt( ((s).sumsq - ( (s).sum * (s).sum / (s).n)) / ((s).n-1) ))
-    Math.sqrt( (@sumsq - ( @sum * @sum / @n)) / (@n-1) )
+    begin
+      return Math.sqrt( (@sumsq - ( @sum * @sum / @n)) / (@n-1) )
+    rescue Errno::EDOM
+      return 0.0
+    end
   end
 
 

tools/rakehelp.rb

@@ -1,5 +1,3 @@
-require 'rcov/rcovtask'
-
 def make(makedir)
   Dir.chdir(makedir) do
     sh(PLATFORM =~ /win32/ ? 'nmake' : 'make')
@@ -111,8 +109,14 @@ def sub_project(project, *targets)
   end
 end
 
-Rcov::RcovTask.new do |t|
-  t.test_files = FileList['test/test*.rb']
-  t.rcov_opts << "-x /usr"
-  t.output_dir = "test/coverage"
+# Conditional require rcov/rcovtask if present
+begin
+  require 'rcov/rcovtask'
+  
+  Rcov::RcovTask.new do |t|
+    t.test_files = FileList['test/test*.rb']
+    t.rcov_opts << "-x /usr"
+    t.output_dir = "test/coverage"
+  end
+rescue
 end