Adding caching of file metadata to the autoloader

The cache isn't actually used yet - this just adds
all of the plumbing.

It was found that stat'ing files that didn't exist
could take up to 85% of a run, so this is progress
toward getting rid of those stats.

Signed-off-by: Luke Kanies <luke@madstop.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/spec/unit/util/autoload.rb b/spec/unit/util/autoload.rb
index 53b90db69..3bd5b50ad 100755
--- a/spec/unit/util/autoload.rb
+++ b/spec/unit/util/autoload.rb
@@ -51,6 +51,10 @@ describe Puppet::Util::Autoload do
         end
     end
 
+    it "should include its FileCache module" do
+        Puppet::Util::Autoload.ancestors.should be_include(Puppet::Util::Autoload::FileCache)
+    end
+
     describe "when loading a file" do
         before do
             @autoload.stubs(:searchpath).returns %w{/a}
@@ -58,14 +62,20 @@ describe Puppet::Util::Autoload do
 
         [RuntimeError, LoadError, SyntaxError].each do |error|
             it "should not die an if a #{error.to_s} exception is thrown" do
-                FileTest.stubs(:directory?).returns true
-                FileTest.stubs(:exist?).returns true
+                @autoload.stubs(:file_exist?).returns true
 
                 Kernel.expects(:load).raises error
 
                 @autoload.load("foo")
             end
         end
+
+        it "should skip files that it knows are missing" do
+            @autoload.expects(:missing_file?).returns true
+            @autoload.expects(:eachdir).never
+
+            @autoload.load("foo")
+        end
     end
 
     describe "when loading all files" do