[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, 168 insertions, 0 deletions

diff --git a/spec/unit/provider_spec.rb b/spec/unit/provider_spec.rb
new file mode 100644
index 0000000000..b0edf492ab
--- /dev/null
+++ b/spec/unit/provider_spec.rb
@@ -0,0 +1,168 @@
+#
+# Author:: Adam Jacob (<adam@opscode.com>)
+# Copyright:: Copyright (c) 2008 Opscode, Inc.
+# 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'
+
+
+class NoWhyrunDemonstrator < Chef::Provider
+  attr_reader :system_state_altered
+  def whyrun_supported?
+    false
+  end
+  def load_current_resource
+
+  end
+  def action_foo
+    @system_state_altered = true
+  end
+end
+
+class ConvergeActionDemonstrator < Chef::Provider
+  attr_reader :system_state_altered
+
+  def whyrun_supported?
+    true
+  end
+
+  def load_current_resource
+  end
+
+  def action_foo
+    converge_by("running a state changing action") do
+      @system_state_altered = true
+    end
+  end
+end
+
+describe Chef::Provider do
+  before(:each) do
+    @cookbook_collection = Chef::CookbookCollection.new([])
+    @node = Chef::Node.new
+    @node.name "latte"
+    @events = Chef::EventDispatch::Dispatcher.new
+    @run_context = Chef::RunContext.new(@node, @cookbook_collection, @events)
+    @resource = Chef::Resource.new("funk", @run_context)
+    @resource.cookbook_name = "a_delicious_pie"
+    @provider = Chef::Provider.new(@resource, @run_context)
+  end
+
+  it "should store the resource passed to new as new_resource" do
+    @provider.new_resource.should eql(@resource)
+  end
+
+  it "should store the node passed to new as node" do
+    @provider.node.should eql(@node)
+  end
+
+  it "should have nil for current_resource by default" do
+    @provider.current_resource.should eql(nil)
+  end
+
+  it "should return true for action_nothing" do
+    @provider.action_nothing.should eql(true)
+  end
+
+  it "evals embedded recipes with a pristine resource collection" do
+    @provider.run_context.instance_variable_set(:@resource_collection, "doesn't matter what this is")
+    temporary_collection = nil
+    snitch = Proc.new {temporary_collection = @run_context.resource_collection}
+    @provider.send(:recipe_eval, &snitch)
+    @provider.converge
+    temporary_collection.should be_an_instance_of(Chef::ResourceCollection)
+    @provider.run_context.instance_variable_get(:@resource_collection).should == "doesn't matter what this is"
+  end
+
+  it "does not re-load recipes when creating the temporary run context" do
+    # we actually want to test that RunContext#load is never called, but we
+    # can't stub all instances of an object with rspec's mocks. :/
+    Chef::RunContext.stub!(:new).and_raise("not supposed to happen")
+    snitch = Proc.new {temporary_collection = @run_context.resource_collection}
+    @provider.send(:recipe_eval, &snitch)
+    @provider.converge
+  end
+
+  context "when no converge actions are queued" do
+    before do
+      @provider.stub!(:whyrun_supported?).and_return(true)
+      @provider.stub!(:load_current_resource)
+    end
+
+    it "does not mark the new resource as updated" do
+      @provider.converge
+      @resource.should_not be_updated
+      @resource.should_not be_updated_by_last_action
+    end
+  end
+
+  context "when converge actions have been added to the queue" do
+    describe "and provider supports whyrun mode" do
+      before do
+        @provider = ConvergeActionDemonstrator.new(@resource, @run_context)
+      end
+
+      it "should tell us that it does support whyrun" do
+        @provider.should be_whyrun_supported
+      end
+
+      it "queues up converge actions" do
+        @provider.action_foo
+        @provider.send(:converge_actions).should have(1).actions
+      end
+
+      it "executes pending converge actions to converge the system" do
+        @provider.run_action(:foo)
+        @provider.instance_variable_get(:@system_state_altered).should be_true
+      end
+
+      it "marks the resource as updated" do
+        @provider.run_action(:foo)
+        @resource.should be_updated
+        @resource.should be_updated_by_last_action
+      end
+    end
+
+    describe "and provider does not support whyrun mode" do
+      before do
+        Chef::Config[:why_run] = true
+        @provider = NoWhyrunDemonstrator.new(@resource, @run_context)
+      end
+
+      after do
+        Chef::Config[:why_run] = false
+      end
+
+      it "should tell us that it doesn't support whyrun" do
+        @provider.should_not be_whyrun_supported
+      end
+
+      it "should automatically generate a converge_by block on the provider's behalf" do
+        @provider.run_action(:foo)
+        @provider.send(:converge_actions).should have(0).actions
+        @provider.system_state_altered.should be_false
+      end
+
+      it "should automatically execute the generated converge_by block" do
+        @provider.run_action(:foo)
+        @provider.system_state_altered.should be_false
+        @resource.should_not be_updated
+        @resource.should_not be_updated_by_last_action
+      end
+    end
+  end
+
+end