[OC-3564] move core Chef to the repo root \o/ \m/

The opscode/chef repository now only contains the core Chef library code
used by chef-client, knife and chef-solo!

1 files changed, 144 insertions, 0 deletions

diff --git a/spec/unit/resource_collection/stepable_iterator_spec.rb b/spec/unit/resource_collection/stepable_iterator_spec.rb
new file mode 100644
index 0000000000..1da9de20cc
--- /dev/null
+++ b/spec/unit/resource_collection/stepable_iterator_spec.rb
@@ -0,0 +1,144 @@
+# Author:: Daniel DeLeo (<dan@kallistec.com>)
+# Copyright:: Copyright (c) 2009 Daniel DeLeo
+# License:: Apache License, Version 2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#     http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+require 'spec_helper'
+
+describe Chef::ResourceCollection::StepableIterator do
+  CRSI = Chef::ResourceCollection::StepableIterator
+  
+  it "has an empty array for its collection by default" do
+    CRSI.new.collection.should == []
+  end
+  
+  describe "doing basic iteration" do
+    before do
+      @simple_collection = [1,2,3,4]
+      @iterator = CRSI.for_collection(@simple_collection)
+    end
+    
+    it "re-initializes the instance with a collection" do
+      @iterator.collection.should equal(@simple_collection)
+      @iterator.size.should == 4
+    end
+
+    it "iterates over the collection" do
+      sum = 0
+      @iterator.each do |int|
+        sum += int
+      end
+      sum.should == 10
+    end
+
+    it "iterates over the collection with each_index" do
+      collected_by_index = []
+      @iterator.each_index do |idx|
+        collected_by_index << @simple_collection[idx]
+      end
+      collected_by_index.should == @simple_collection
+      collected_by_index.should_not equal(@simple_collection)
+    end
+    
+    it "iterates over the collection with index and element" do
+      collected = {}
+      @iterator.each_with_index do |element, index|
+        collected[index] = element
+      end
+      collected.should == {0=>1, 1=>2, 2=>3, 3=>4}
+    end
+    
+  end
+  
+  describe "pausing and resuming iteration" do
+    
+    before do
+      @collection = []
+      @snitch_var = nil
+      @collection << lambda { @snitch_var = 23 }
+      @collection << lambda { @iterator.pause }
+      @collection << lambda { @snitch_var = 42 }
+      
+      @iterator = CRSI.for_collection(@collection)
+      @iterator.each { |proc| proc.call }
+    end
+    
+    it "allows the iteration to be paused" do
+      @snitch_var.should == 23
+    end
+    
+    it "allows the iteration to be resumed" do
+      @snitch_var.should == 23
+      @iterator.resume
+      @snitch_var.should == 42
+    end
+    
+    it "allows iteration to be rewound" do
+      @iterator.skip_back(2)
+      @iterator.resume
+      @snitch_var.should == 23
+      @iterator.resume
+      @snitch_var.should == 42
+    end
+    
+    it "allows iteration to be fast forwarded" do
+      @iterator.skip_forward
+      @iterator.resume
+      @snitch_var.should == 23
+    end
+    
+    it "allows iteration to be rewound" do
+      @snitch_var = nil
+      @iterator.rewind
+      @iterator.position.should == 0
+      @iterator.resume
+      @snitch_var.should == 23
+    end
+    
+    it "allows iteration to be stepped" do
+      @snitch_var = nil
+      @iterator.rewind
+      @iterator.step
+      @iterator.position.should == 1
+      @snitch_var.should == 23
+    end
+    
+    it "doesn't step if there are no more steps" do
+      @iterator.step.should == 3
+      lambda {@iterator.step}.should_not raise_error
+      @iterator.step.should be_nil
+    end
+    
+    it "allows the iteration to start by being stepped" do
+      @snitch_var = nil
+      @iterator = CRSI.for_collection(@collection)
+      @iterator.iterate_on(:element) { |proc| proc.call }
+      @iterator.step
+      @iterator.position.should == 1
+      @snitch_var.should == 23
+    end
+    
+    it "should work correctly when elements are added to the collection during iteration" do
+      @collection.insert(2, lambda { @snitch_var = 815})
+      @collection.insert(3, lambda { @iterator.pause })
+      @iterator.resume
+      @snitch_var.should == 815
+      @iterator.resume
+      @snitch_var.should == 42
+    end
+    
+  end
+  
+end