Use let instead of instance variables

1 files changed, 255 insertions, 253 deletions

diff --git a/spec/unit/resource_spec.rb b/spec/unit/resource_spec.rb
index b9ba80068b..b433a8062d 100644
--- a/spec/unit/resource_spec.rb
+++ b/spec/unit/resource_spec.rb
@@ -22,25 +22,24 @@
 require 'spec_helper'
 
 describe Chef::Resource do
-  before(:each) do
-    @cookbook_repo_path =  File.join(CHEF_SPEC_DATA, 'cookbooks')
-    @cookbook_collection = Chef::CookbookCollection.new(Chef::CookbookLoader.new(@cookbook_repo_path))
-    @node = Chef::Node.new
-    @events = Chef::EventDispatch::Dispatcher.new
-    @run_context = Chef::RunContext.new(@node, @cookbook_collection, @events)
-    @resource = Chef::Resource.new("funk", @run_context)
-  end
+  let(:cookbook_repo_path) { File.join(CHEF_SPEC_DATA, 'cookbooks') }
+  let(:cookbook_collection) { Chef::CookbookCollection.new(Chef::CookbookLoader.new(cookbook_repo_path)) }
+  let(:node) { Chef::Node.new }
+  let(:events) { Chef::EventDispatch::Dispatcher.new }
+  let(:run_context) { Chef::RunContext.new(node, cookbook_collection, events) }
+  let(:resource) { resource_class.new("funk", run_context) }
+  let(:resource_class) { Chef::Resource }
 
   it "should mixin shell_out" do
-    expect(@resource.respond_to?(:shell_out)).to be true
+    expect(resource.respond_to?(:shell_out)).to be true
   end
 
   it "should mixin shell_out!" do
-    expect(@resource.respond_to?(:shell_out!)).to be true
+    expect(resource.respond_to?(:shell_out!)).to be true
   end
 
   it "should mixin shell_out_with_systems_locale" do
-    expect(@resource.respond_to?(:shell_out_with_systems_locale)).to be true
+    expect(resource.respond_to?(:shell_out_with_systems_locale)).to be true
   end
 
   describe "when inherited" do
@@ -86,30 +85,29 @@ describe Chef::Resource do
   end
 
   describe "when no identity attribute has been declared" do
-    before do
-      @resource_sans_id = Chef::Resource.new("my-name")
-    end
+    let(:resource_sans_id) { Chef::Resource.new("my-name") }
 
     # Would rather force identity attributes to be set for everything,
     # but that's not plausible for back compat reasons.
     it "uses the name as the identity" do
-      expect(@resource_sans_id.identity).to eq("my-name")
+      expect(resource_sans_id.identity).to eq("my-name")
     end
   end
 
   describe "when an identity attribute has been declared" do
-    before do
-      @file_resource_class = Class.new(Chef::Resource) do
+    let(:file_resource) {
+      file_resource_class = Class.new(Chef::Resource) do
         identity_attr :path
         attr_accessor :path
       end
 
-      @file_resource = @file_resource_class.new("identity-attr-test")
-      @file_resource.path = "/tmp/foo.txt"
-    end
+      file_resource = file_resource_class.new("identity-attr-test")
+      file_resource.path = "/tmp/foo.txt"
+      file_resource
+    }
 
     it "gives the value of its identity attribute" do
-      expect(@file_resource.identity).to eq("/tmp/foo.txt")
+      expect(file_resource.identity).to eq("/tmp/foo.txt")
     end
   end
 
@@ -142,8 +140,8 @@ describe Chef::Resource do
   end
 
   describe "when a set of state attributes has been declared" do
-    before do
-      @file_resource_class = Class.new(Chef::Resource) do
+    let(:file_resource) {
+      file_resource_class = Class.new(Chef::Resource) do
 
         state_attrs :checksum, :owner, :group, :mode
 
@@ -153,15 +151,16 @@ describe Chef::Resource do
         attr_accessor :mode
       end
 
-      @file_resource = @file_resource_class.new("describe-state-test")
-      @file_resource.checksum = "abc123"
-      @file_resource.owner = "root"
-      @file_resource.group = "wheel"
-      @file_resource.mode = "0644"
-    end
+      file_resource = file_resource_class.new("describe-state-test")
+      file_resource.checksum = "abc123"
+      file_resource.owner = "root"
+      file_resource.group = "wheel"
+      file_resource.mode = "0644"
+      file_resource
+    }
 
     it "describes its state" do
-      resource_state = @file_resource.state
+      resource_state = file_resource.state
       expect(resource_state.keys).to match_array([:checksum, :owner, :group, :mode])
       expect(resource_state[:checksum]).to eq("abc123")
       expect(resource_state[:owner]).to eq("root")
@@ -171,157 +170,160 @@ describe Chef::Resource do
   end
 
   describe "load_from" do
+    let(:prior_resource) {
+      prior_resource = Chef::Resource.new("funk")
+      prior_resource.supports(:funky => true)
+      prior_resource.source_line
+      prior_resource.allowed_actions << :funkytown
+      prior_resource.action(:funkytown)
+      prior_resource
+    }
     before(:each) do
-      @prior_resource = Chef::Resource.new("funk")
-      @prior_resource.supports(:funky => true)
-      @prior_resource.source_line
-      @prior_resource.allowed_actions << :funkytown
-      @prior_resource.action(:funkytown)
-      @resource.allowed_actions << :funkytown
-      @run_context.resource_collection << @prior_resource
+      resource.allowed_actions << :funkytown
+      run_context.resource_collection << prior_resource
     end
 
     it "should load the attributes of a prior resource" do
-      @resource.load_from(@prior_resource)
-      expect(@resource.supports).to eq({ :funky => true })
+      resource.load_from(prior_resource)
+      expect(resource.supports).to eq({ :funky => true })
     end
 
     it "should not inherit the action from the prior resource" do
-      @resource.load_from(@prior_resource)
-      expect(@resource.action).not_to eq(@prior_resource.action)
+      resource.load_from(prior_resource)
+      expect(resource.action).not_to eq(prior_resource.action)
     end
   end
 
   describe "name" do
     it "should have a name" do
-      expect(@resource.name).to eql("funk")
+      expect(resource.name).to eql("funk")
     end
 
     it "should let you set a new name" do
-      @resource.name "monkey"
-      expect(@resource.name).to eql("monkey")
+      resource.name "monkey"
+      expect(resource.name).to eql("monkey")
     end
 
     it "coerces arrays to names" do
-      expect(@resource.name ['a', 'b']).to eql('a, b')
+      expect(resource.name ['a', 'b']).to eql('a, b')
     end
 
     it "should coerce objects to a string" do
-      expect(@resource.name Object.new).to be_a(String)
+      expect(resource.name Object.new).to be_a(String)
     end
   end
 
   describe "noop" do
     it "should accept true or false for noop" do
-      expect { @resource.noop true }.not_to raise_error
-      expect { @resource.noop false }.not_to raise_error
-      expect { @resource.noop "eat it" }.to raise_error(ArgumentError)
+      expect { resource.noop true }.not_to raise_error
+      expect { resource.noop false }.not_to raise_error
+      expect { resource.noop "eat it" }.to raise_error(ArgumentError)
     end
   end
 
   describe "notifies" do
     it "should make notified resources appear in the actions hash" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
-      @resource.notifies :reload, @run_context.resource_collection.find(:zen_master => "coffee")
-      expect(@resource.delayed_notifications.detect{|e| e.resource.name == "coffee" && e.action == :reload}).not_to be_nil
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
+      resource.notifies :reload, run_context.resource_collection.find(:zen_master => "coffee")
+      expect(resource.delayed_notifications.detect{|e| e.resource.name == "coffee" && e.action == :reload}).not_to be_nil
     end
 
     it "should make notified resources be capable of acting immediately" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
-      @resource.notifies :reload, @run_context.resource_collection.find(:zen_master => "coffee"), :immediate
-      expect(@resource.immediate_notifications.detect{|e| e.resource.name == "coffee" && e.action == :reload}).not_to be_nil
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
+      resource.notifies :reload, run_context.resource_collection.find(:zen_master => "coffee"), :immediate
+      expect(resource.immediate_notifications.detect{|e| e.resource.name == "coffee" && e.action == :reload}).not_to be_nil
     end
 
     it "should raise an exception if told to act in other than :delay or :immediate(ly)" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
       expect {
-        @resource.notifies :reload, @run_context.resource_collection.find(:zen_master => "coffee"), :someday
+        resource.notifies :reload, run_context.resource_collection.find(:zen_master => "coffee"), :someday
       }.to raise_error(ArgumentError)
     end
 
     it "should allow multiple notified resources appear in the actions hash" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
-      @resource.notifies :reload, @run_context.resource_collection.find(:zen_master => "coffee")
-      expect(@resource.delayed_notifications.detect{|e| e.resource.name == "coffee" && e.action == :reload}).not_to be_nil
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
+      resource.notifies :reload, run_context.resource_collection.find(:zen_master => "coffee")
+      expect(resource.delayed_notifications.detect{|e| e.resource.name == "coffee" && e.action == :reload}).not_to be_nil
 
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("beans")
-      @resource.notifies :reload, @run_context.resource_collection.find(:zen_master => "beans")
-      expect(@resource.delayed_notifications.detect{|e| e.resource.name == "beans" && e.action == :reload}).not_to be_nil
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("beans")
+      resource.notifies :reload, run_context.resource_collection.find(:zen_master => "beans")
+      expect(resource.delayed_notifications.detect{|e| e.resource.name == "beans" && e.action == :reload}).not_to be_nil
     end
 
     it "creates a notification for a resource that is not yet in the resource collection" do
-      @resource.notifies(:restart, :service => 'apache')
-      expected_notification = Chef::Resource::Notification.new({:service => "apache"}, :restart, @resource)
-      expect(@resource.delayed_notifications).to include(expected_notification)
+      resource.notifies(:restart, :service => 'apache')
+      expected_notification = Chef::Resource::Notification.new({:service => "apache"}, :restart, resource)
+      expect(resource.delayed_notifications).to include(expected_notification)
     end
 
     it "notifies another resource immediately" do
-      @resource.notifies_immediately(:restart, :service => 'apache')
-      expected_notification = Chef::Resource::Notification.new({:service => "apache"}, :restart, @resource)
-      expect(@resource.immediate_notifications).to include(expected_notification)
+      resource.notifies_immediately(:restart, :service => 'apache')
+      expected_notification = Chef::Resource::Notification.new({:service => "apache"}, :restart, resource)
+      expect(resource.immediate_notifications).to include(expected_notification)
     end
 
     it "notifies a resource to take action at the end of the chef run" do
-      @resource.notifies_delayed(:restart, :service => "apache")
-      expected_notification = Chef::Resource::Notification.new({:service => "apache"}, :restart, @resource)
-      expect(@resource.delayed_notifications).to include(expected_notification)
+      resource.notifies_delayed(:restart, :service => "apache")
+      expected_notification = Chef::Resource::Notification.new({:service => "apache"}, :restart, resource)
+      expect(resource.delayed_notifications).to include(expected_notification)
     end
 
     it "notifies a resource with an array for its name via its prettified string name" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new(["coffee", "tea"])
-      @resource.notifies :reload, @run_context.resource_collection.find(:zen_master => "coffee, tea")
-      expect(@resource.delayed_notifications.detect{|e| e.resource.name == "coffee, tea" && e.action == :reload}).not_to be_nil
+      run_context.resource_collection << Chef::Resource::ZenMaster.new(["coffee", "tea"])
+      resource.notifies :reload, run_context.resource_collection.find(:zen_master => "coffee, tea")
+      expect(resource.delayed_notifications.detect{|e| e.resource.name == "coffee, tea" && e.action == :reload}).not_to be_nil
     end
   end
 
   describe "subscribes" do
     it "should make resources appear in the actions hash of subscribed nodes" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
-      zr = @run_context.resource_collection.find(:zen_master => "coffee")
-      @resource.subscribes :reload, zr
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
+      zr = run_context.resource_collection.find(:zen_master => "coffee")
+      resource.subscribes :reload, zr
       expect(zr.delayed_notifications.detect{|e| e.resource.name == "funk" && e.action == :reload}).not_to be_nil
     end
 
     it "should make resources appear in the actions hash of subscribed nodes" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
-      zr = @run_context.resource_collection.find(:zen_master => "coffee")
-      @resource.subscribes :reload, zr
-      expect(zr.delayed_notifications.detect{|e| e.resource.name == @resource.name && e.action == :reload}).not_to be_nil
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
+      zr = run_context.resource_collection.find(:zen_master => "coffee")
+      resource.subscribes :reload, zr
+      expect(zr.delayed_notifications.detect{|e| e.resource.name == resource.name && e.action == :reload}).not_to be_nil
 
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("bean")
-      zrb = @run_context.resource_collection.find(:zen_master => "bean")
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("bean")
+      zrb = run_context.resource_collection.find(:zen_master => "bean")
       zrb.subscribes :reload, zr
-      expect(zr.delayed_notifications.detect{|e| e.resource.name == @resource.name && e.action == :reload}).not_to be_nil
+      expect(zr.delayed_notifications.detect{|e| e.resource.name == resource.name && e.action == :reload}).not_to be_nil
     end
 
     it "should make subscribed resources be capable of acting immediately" do
-      @run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
-      zr = @run_context.resource_collection.find(:zen_master => "coffee")
-      @resource.subscribes :reload, zr, :immediately
-      expect(zr.immediate_notifications.detect{|e| e.resource.name == @resource.name && e.action == :reload}).not_to be_nil
+      run_context.resource_collection << Chef::Resource::ZenMaster.new("coffee")
+      zr = run_context.resource_collection.find(:zen_master => "coffee")
+      resource.subscribes :reload, zr, :immediately
+      expect(zr.immediate_notifications.detect{|e| e.resource.name == resource.name && e.action == :reload}).not_to be_nil
     end
   end
 
   describe "defined_at" do
     it "should correctly parse source_line on unix-like operating systems" do
-      @resource.source_line = "/some/path/to/file.rb:80:in `wombat_tears'"
-      expect(@resource.defined_at).to eq("/some/path/to/file.rb line 80")
+      resource.source_line = "/some/path/to/file.rb:80:in `wombat_tears'"
+      expect(resource.defined_at).to eq("/some/path/to/file.rb line 80")
     end
 
     it "should correctly parse source_line on Windows" do
-      @resource.source_line = "C:/some/path/to/file.rb:80 in 1`wombat_tears'"
-      expect(@resource.defined_at).to eq("C:/some/path/to/file.rb line 80")
+      resource.source_line = "C:/some/path/to/file.rb:80 in 1`wombat_tears'"
+      expect(resource.defined_at).to eq("C:/some/path/to/file.rb line 80")
     end
 
     it "should include the cookbook and recipe when it knows it" do
-      @resource.source_line = "/some/path/to/file.rb:80:in `wombat_tears'"
-      @resource.recipe_name = "wombats"
-      @resource.cookbook_name = "animals"
-      expect(@resource.defined_at).to eq("animals::wombats line 80")
+      resource.source_line = "/some/path/to/file.rb:80:in `wombat_tears'"
+      resource.recipe_name = "wombats"
+      resource.cookbook_name = "animals"
+      expect(resource.defined_at).to eq("animals::wombats line 80")
     end
 
     it "should recognize dynamically defined resources" do
-      expect(@resource.defined_at).to eq("dynamically defined")
+      expect(resource.defined_at).to eq("dynamically defined")
     end
   end
 
@@ -345,7 +347,7 @@ describe Chef::Resource do
         expect(r.declared_type).to eq :d
       end
 
-      it "and there are no provides lines, @resource_name is used" do
+      it "and there are no provides lines, resource_name is used" do
         c = Class.new(Chef::Resource) do
           def initialize(*args, &block)
             @resource_name = :blah
@@ -419,26 +421,26 @@ describe Chef::Resource do
     end
 
     it "should allow arguments preceded by is to methods" do
-      @resource.noop(@resource.is(true))
-      expect(@resource.noop).to eql(true)
+      resource.noop(resource.is(true))
+      expect(resource.noop).to eql(true)
     end
   end
 
   describe "to_json" do
     it "should serialize to json" do
-      json = @resource.to_json
+      json = resource.to_json
       expect(json).to match(/json_class/)
       expect(json).to match(/instance_vars/)
     end
 
     include_examples "to_json equivalent to Chef::JSONCompat.to_json" do
-      let(:jsonable) { @resource }
+      let(:jsonable) { resource }
     end
   end
 
   describe "to_hash" do
     it "should convert to a hash" do
-      hash = @resource.to_hash
+      hash = resource.to_hash
       expected_keys = [ :allowed_actions, :params, :provider, :updated,
         :updated_by_last_action, :before, :supports,
         :noop, :ignore_failure, :name, :source_line,
@@ -452,80 +454,83 @@ describe Chef::Resource do
 
   describe "self.json_create" do
     it "should deserialize itself from json" do
-      json = Chef::JSONCompat.to_json(@resource)
+      json = Chef::JSONCompat.to_json(resource)
       serialized_node = Chef::JSONCompat.from_json(json)
       expect(serialized_node).to be_a_kind_of(Chef::Resource)
-      expect(serialized_node.name).to eql(@resource.name)
+      expect(serialized_node.name).to eql(resource.name)
     end
   end
 
   describe "supports" do
     it "should allow you to set what features this resource supports" do
       support_hash = { :one => :two }
-      @resource.supports(support_hash)
-      expect(@resource.supports).to eql(support_hash)
+      resource.supports(support_hash)
+      expect(resource.supports).to eql(support_hash)
     end
 
     it "should return the current value of supports" do
-      expect(@resource.supports).to eq({})
+      expect(resource.supports).to eq({})
     end
   end
 
   describe "ignore_failure" do
     it "should default to throwing an error if a provider fails for a resource" do
-      expect(@resource.ignore_failure).to eq(false)
+      expect(resource.ignore_failure).to eq(false)
     end
 
     it "should allow you to set whether a provider should throw exceptions with ignore_failure" do
-      @resource.ignore_failure(true)
-      expect(@resource.ignore_failure).to eq(true)
+      resource.ignore_failure(true)
+      expect(resource.ignore_failure).to eq(true)
     end
 
     it "should allow you to epic_fail" do
-      @resource.epic_fail(true)
-      expect(@resource.epic_fail).to eq(true)
+      resource.epic_fail(true)
+      expect(resource.epic_fail).to eq(true)
     end
   end
 
   describe "retries" do
-    before do
-      @retriable_resource = Chef::Resource::Cat.new("precious", @run_context)
-      @retriable_resource.provider = Chef::Provider::SnakeOil
-      @retriable_resource.action = :purr
+    let(:retriable_resource) {
+      retriable_resource = Chef::Resource::Cat.new("precious", run_context)
+      retriable_resource.provider = Chef::Provider::SnakeOil
+      retriable_resource.action = :purr
+      retriable_resource
+    }
 
-      @node.automatic_attrs[:platform] = "fubuntu"
-      @node.automatic_attrs[:platform_version] = '10.04'
+    before do
+      node.automatic_attrs[:platform] = "fubuntu"
+      node.automatic_attrs[:platform_version] = '10.04'
     end
 
     it "should default to not retrying if a provider fails for a resource" do
-      expect(@retriable_resource.retries).to eq(0)
+      expect(retriable_resource.retries).to eq(0)
     end
 
     it "should allow you to set how many retries a provider should attempt after a failure" do
-      @retriable_resource.retries(2)
-      expect(@retriable_resource.retries).to eq(2)
+      retriable_resource.retries(2)
+      expect(retriable_resource.retries).to eq(2)
     end
 
     it "should default to a retry delay of 2 seconds" do
-      expect(@retriable_resource.retry_delay).to eq(2)
+      expect(retriable_resource.retry_delay).to eq(2)
     end
 
     it "should allow you to set the retry delay" do
-      @retriable_resource.retry_delay(10)
-      expect(@retriable_resource.retry_delay).to eq(10)
+      retriable_resource.retry_delay(10)
+      expect(retriable_resource.retry_delay).to eq(10)
     end
 
     it "should keep given value of retries intact after the provider fails for a resource" do
-      @retriable_resource.retries(3)
-      @retriable_resource.retry_delay(0) # No need to wait.
+      retriable_resource.retries(3)
+      retriable_resource.retry_delay(0) # No need to wait.
 
-      provider = Chef::Provider::SnakeOil.new(@retriable_resource, @run_context)
+      provider = Chef::Provider::SnakeOil.new(retriable_resource, run_context)
       allow(Chef::Provider::SnakeOil).to receive(:new).and_return(provider)
       allow(provider).to receive(:action_purr).and_raise
 
-      expect(@retriable_resource).to receive(:sleep).exactly(3).times
-      expect { @retriable_resource.run_action(:purr) }.to raise_error
-      expect(@retriable_resource.retries).to eq(3)
+      expect(retriable_resource).to receive(:sleep).exactly(3).times
+      expect { retriable_resource.run_action(:purr) }.to raise_error
+      expect(retriable_resource.retries).to eq(3)
     end
   end
 
@@ -560,28 +565,28 @@ describe Chef::Resource do
 
   describe "when updated by a provider" do
     before do
-      @resource.updated_by_last_action(true)
+      resource.updated_by_last_action(true)
     end
 
     it "records that it was updated" do
-      expect(@resource).to be_updated
+      expect(resource).to be_updated
     end
 
     it "records that the last action updated the resource" do
-      expect(@resource).to be_updated_by_last_action
+      expect(resource).to be_updated_by_last_action
     end
 
     describe "and then run again without being updated" do
       before do
-        @resource.updated_by_last_action(false)
+        resource.updated_by_last_action(false)
       end
 
       it "reports that it is updated" do
-        expect(@resource).to be_updated
+        expect(resource).to be_updated
       end
 
       it "reports that it was not updated by the last action" do
-        expect(@resource).not_to be_updated_by_last_action
+        expect(resource).not_to be_updated_by_last_action
       end
 
     end
@@ -589,72 +594,75 @@ describe Chef::Resource do
   end
 
   describe "when invoking its action" do
+    let(:resource) {
+      resource = Chef::Resource.new("provided", run_context)
+      resource.provider = Chef::Provider::SnakeOil
+      resource
+    }
     before do
-      @resource = Chef::Resource.new("provided", @run_context)
-      @resource.provider = Chef::Provider::SnakeOil
-      @node.automatic_attrs[:platform] = "fubuntu"
-      @node.automatic_attrs[:platform_version] = '10.04'
+      node.automatic_attrs[:platform] = "fubuntu"
+      node.automatic_attrs[:platform_version] = '10.04'
     end
 
     it "does not run only_if if no only_if command is given" do
       expect_any_instance_of(Chef::Resource::Conditional).not_to receive(:evaluate)
-      @resource.only_if.clear
-      @resource.run_action(:purr)
+      resource.only_if.clear
+      resource.run_action(:purr)
     end
 
     it "runs runs an only_if when one is given" do
       snitch_variable = nil
-      @resource.only_if { snitch_variable = true }
-      expect(@resource.only_if.first.positivity).to eq(:only_if)
+      resource.only_if { snitch_variable = true }
+      expect(resource.only_if.first.positivity).to eq(:only_if)
       #Chef::Mixin::Command.should_receive(:only_if).with(true, {}).and_return(false)
-      @resource.run_action(:purr)
+      resource.run_action(:purr)
       expect(snitch_variable).to be_truthy
     end
 
     it "runs multiple only_if conditionals" do
       snitch_var1, snitch_var2 = nil, nil
-      @resource.only_if { snitch_var1 = 1 }
-      @resource.only_if { snitch_var2 = 2 }
-      @resource.run_action(:purr)
+      resource.only_if { snitch_var1 = 1 }
+      resource.only_if { snitch_var2 = 2 }
+      resource.run_action(:purr)
       expect(snitch_var1).to eq(1)
       expect(snitch_var2).to eq(2)
     end
 
     it "accepts command options for only_if conditionals" do
       expect_any_instance_of(Chef::Resource::Conditional).to receive(:evaluate_command).at_least(1).times
-      @resource.only_if("true", :cwd => '/tmp')
-      expect(@resource.only_if.first.command_opts).to eq({:cwd => '/tmp'})
-      @resource.run_action(:purr)
+      resource.only_if("true", :cwd => '/tmp')
+      expect(resource.only_if.first.command_opts).to eq({:cwd => '/tmp'})
+      resource.run_action(:purr)
     end
 
     it "runs not_if as a command when it is a string" do
       expect_any_instance_of(Chef::Resource::Conditional).to receive(:evaluate_command).at_least(1).times
-      @resource.not_if "pwd"
-      @resource.run_action(:purr)
+      resource.not_if "pwd"
+      resource.run_action(:purr)
     end
 
     it "runs not_if as a block when it is a ruby block" do
       expect_any_instance_of(Chef::Resource::Conditional).to receive(:evaluate_block).at_least(1).times
-      @resource.not_if { puts 'foo' }
-      @resource.run_action(:purr)
+      resource.not_if { puts 'foo' }
+      resource.run_action(:purr)
     end
 
     it "does not run not_if if no not_if command is given" do
       expect_any_instance_of(Chef::Resource::Conditional).not_to receive(:evaluate)
-      @resource.not_if.clear
-      @resource.run_action(:purr)
+      resource.not_if.clear
+      resource.run_action(:purr)
     end
 
     it "accepts command options for not_if conditionals" do
-      @resource.not_if("pwd" , :cwd => '/tmp')
-      expect(@resource.not_if.first.command_opts).to eq({:cwd => '/tmp'})
+      resource.not_if("pwd" , :cwd => '/tmp')
+      expect(resource.not_if.first.command_opts).to eq({:cwd => '/tmp'})
     end
 
     it "accepts multiple not_if conditionals" do
       snitch_var1, snitch_var2 = true, true
-      @resource.not_if {snitch_var1 = nil}
-      @resource.not_if {snitch_var2 = false}
-      @resource.run_action(:purr)
+      resource.not_if {snitch_var1 = nil}
+      resource.not_if {snitch_var2 = false}
+      resource.run_action(:purr)
       expect(snitch_var1).to be_nil
       expect(snitch_var2).to be_falsey
     end
@@ -662,13 +670,11 @@ describe Chef::Resource do
     it "reports 0 elapsed time if actual elapsed time is < 0" do
       expected = Time.now
       allow(Time).to receive(:now).and_return(expected, expected - 1)
-      @resource.run_action(:purr)
-      expect(@resource.elapsed_time).to eq(0)
+      resource.run_action(:purr)
+      expect(resource.elapsed_time).to eq(0)
     end
 
     describe "guard_interpreter attribute" do
-      let(:resource) { @resource }
-
       it "should be set to :default by default" do
         expect(resource.guard_interpreter).to eq(:default)
       end
@@ -691,106 +697,108 @@ describe Chef::Resource do
 
   describe "should_skip?" do
     before do
-      @resource = Chef::Resource::Cat.new("sugar", @run_context)
+      resource = Chef::Resource::Cat.new("sugar", run_context)
     end
 
     it "should return false by default" do
-      expect(@resource.should_skip?(:purr)).to be_falsey
+      expect(resource.should_skip?(:purr)).to be_falsey
     end
 
     it "should return false when only_if is met" do
-      @resource.only_if { true }
-      expect(@resource.should_skip?(:purr)).to be_falsey
+      resource.only_if { true }
+      expect(resource.should_skip?(:purr)).to be_falsey
     end
 
     it "should return true when only_if is not met" do
-      @resource.only_if { false }
-      expect(@resource.should_skip?(:purr)).to be_truthy
+      resource.only_if { false }
+      expect(resource.should_skip?(:purr)).to be_truthy
     end
 
     it "should return true when not_if is met" do
-      @resource.not_if { true }
-      expect(@resource.should_skip?(:purr)).to be_truthy
+      resource.not_if { true }
+      expect(resource.should_skip?(:purr)).to be_truthy
     end
 
     it "should return false when not_if is not met" do
-      @resource.not_if { false }
-      expect(@resource.should_skip?(:purr)).to be_falsey
+      resource.not_if { false }
+      expect(resource.should_skip?(:purr)).to be_falsey
     end
 
     it "should return true when only_if is met but also not_if is met" do
-      @resource.only_if { true }
-      @resource.not_if { true }
-      expect(@resource.should_skip?(:purr)).to be_truthy
+      resource.only_if { true }
+      resource.not_if { true }
+      expect(resource.should_skip?(:purr)).to be_truthy
     end
 
     it "should return true when one of multiple only_if's is not met" do
-      @resource.only_if { true }
-      @resource.only_if { false }
-      @resource.only_if { true }
-      expect(@resource.should_skip?(:purr)).to be_truthy
+      resource.only_if { true }
+      resource.only_if { false }
+      resource.only_if { true }
+      expect(resource.should_skip?(:purr)).to be_truthy
     end
 
     it "should return true when one of multiple not_if's is met" do
-      @resource.not_if { false }
-      @resource.not_if { true }
-      @resource.not_if { false }
-      expect(@resource.should_skip?(:purr)).to be_truthy
+      resource.not_if { false }
+      resource.not_if { true }
+      resource.not_if { false }
+      expect(resource.should_skip?(:purr)).to be_truthy
     end
 
     it "should return true when action is :nothing" do
-      expect(@resource.should_skip?(:nothing)).to be_truthy
+      expect(resource.should_skip?(:nothing)).to be_truthy
     end
 
     it "should return true when action is :nothing ignoring only_if/not_if conditionals" do
-      @resource.only_if { true }
-      @resource.not_if { false }
-      expect(@resource.should_skip?(:nothing)).to be_truthy
+      resource.only_if { true }
+      resource.not_if { false }
+      expect(resource.should_skip?(:nothing)).to be_truthy
     end
 
     it "should print \"skipped due to action :nothing\" message for doc formatter when action is :nothing" do
       fdoc = Chef::Formatters.new(:doc, STDOUT, STDERR)
-      allow(@run_context).to receive(:events).and_return(fdoc)
+      allow(run_context).to receive(:events).and_return(fdoc)
       expect(fdoc).to receive(:puts).with(" (skipped due to action :nothing)", anything())
-      @resource.should_skip?(:nothing)
+      resource.should_skip?(:nothing)
     end
 
   end
 
   describe "when resource action is :nothing" do
+    let(:resource1) {
+      resource1 = Chef::Resource::Cat.new("sugar", run_context)
+      resource1.action = :nothing
+      resource1
+    }
     before do
-      @resource1 = Chef::Resource::Cat.new("sugar", @run_context)
-      @resource1.action = :nothing
-
-      @node.automatic_attrs[:platform] = "fubuntu"
-      @node.automatic_attrs[:platform_version] = '10.04'
+      node.automatic_attrs[:platform] = "fubuntu"
+      node.automatic_attrs[:platform_version] = '10.04'
     end
 
     it "should not run only_if/not_if conditionals (CHEF-972)" do
       snitch_var1 = 0
-      @resource1.only_if { snitch_var1 = 1 }
-      @resource1.not_if { snitch_var1 = 2 }
-      @resource1.run_action(:nothing)
+      resource1.only_if { snitch_var1 = 1 }
+      resource1.not_if { snitch_var1 = 2 }
+      resource1.run_action(:nothing)
       expect(snitch_var1).to eq(0)
     end
 
     it "should run only_if/not_if conditionals when notified to run another action (CHEF-972)" do
       snitch_var1 = snitch_var2 = 0
-      @runner = Chef::Runner.new(@run_context)
+      runner = Chef::Runner.new(run_context)
       Chef::Platform.set(
         :resource => :cat,
         :provider => Chef::Provider::SnakeOil
       )
 
-      @resource1.only_if { snitch_var1 = 1 }
-      @resource1.not_if { snitch_var2 = 2 }
-      @resource2 = Chef::Resource::Cat.new("coffee", @run_context)
-      @resource2.notifies :purr, @resource1
-      @resource2.action = :purr
+      resource1.only_if { snitch_var1 = 1 }
+      resource1.not_if { snitch_var2 = 2 }
+      resource2 = Chef::Resource::Cat.new("coffee", run_context)
+      resource2.notifies :purr, resource1
+      resource2.action = :purr
 
-      @run_context.resource_collection << @resource1
-      @run_context.resource_collection << @resource2
-      @runner.converge
+      run_context.resource_collection << resource1
+      run_context.resource_collection << resource2
+      runner.converge
 
       expect(snitch_var1).to eq(1)
       expect(snitch_var2).to eq(2)
@@ -838,10 +846,10 @@ describe Chef::Resource do
 
       before(:each) do
         Chef::Resource::Klz1 = klz1
-        @node = Chef::Node.new
-        @node.name("bumblebee")
-        @node.automatic[:platform] = "autobots"
-        @node.automatic[:platform_version] = "6.1"
+        node = Chef::Node.new
+        node.name("bumblebee")
+        node.automatic[:platform] = "autobots"
+        node.automatic[:platform_version] = "6.1"
         Object.const_set('Soundwave', klz1)
         klz1.provides :soundwave
       end
@@ -852,7 +860,7 @@ describe Chef::Resource do
       end
 
       it "returns a resource by short_name if nothing else matches" do
-        expect(Chef::Resource.resource_for_node(:soundwave, @node)).to eql(klz1)
+        expect(Chef::Resource.resource_for_node(:soundwave, node)).to eql(klz1)
       end
     end
 
@@ -861,10 +869,9 @@ describe Chef::Resource do
 
       before(:each) do
         Chef::Resource::Klz2 = klz2
-        @node = Chef::Node.new
-        @node.name("bumblebee")
-        @node.automatic[:platform] = "autobots"
-        @node.automatic[:platform_version] = "6.1"
+        node.name("bumblebee")
+        node.automatic[:platform] = "autobots"
+        node.automatic[:platform_version] = "6.1"
         klz2.provides :dinobot, :platform => ['autobots']
         Object.const_set('Grimlock', klz2)
         klz2.provides :grimlock
@@ -876,7 +883,7 @@ describe Chef::Resource do
       end
 
       it "returns a resource by short_name and node" do
-        expect(Chef::Resource.resource_for_node(:dinobot, @node)).to eql(klz2)
+        expect(Chef::Resource.resource_for_node(:dinobot, node)).to eql(klz2)
       end
     end
 
@@ -887,69 +894,64 @@ describe Chef::Resource do
     describe "with a string resource spec" do
 
       it "creates a delayed notification when timing is not specified" do
-        @resource.notifies(:run, "execute[foo]")
-        expect(@run_context.delayed_notification_collection.size).to eq(1)
+        resource.notifies(:run, "execute[foo]")
+        expect(run_context.delayed_notification_collection.size).to eq(1)
       end
 
       it "creates a delayed notification when :delayed is not specified" do
-        @resource.notifies(:run, "execute[foo]", :delayed)
-        expect(@run_context.delayed_notification_collection.size).to eq(1)
+        resource.notifies(:run, "execute[foo]", :delayed)
+        expect(run_context.delayed_notification_collection.size).to eq(1)
       end
 
       it "creates an immediate notification when :immediate is specified" do
-        @resource.notifies(:run, "execute[foo]", :immediate)
-        expect(@run_context.immediate_notification_collection.size).to eq(1)
+        resource.notifies(:run, "execute[foo]", :immediate)
+        expect(run_context.immediate_notification_collection.size).to eq(1)
       end
 
       it "creates an immediate notification when :immediately is specified" do
-        @resource.notifies(:run, "execute[foo]", :immediately)
-        expect(@run_context.immediate_notification_collection.size).to eq(1)
+        resource.notifies(:run, "execute[foo]", :immediately)
+        expect(run_context.immediate_notification_collection.size).to eq(1)
       end
 
       describe "with a syntax error in the resource spec" do
 
         it "raises an exception immmediately" do
           expect do
-            @resource.notifies(:run, "typo[missing-closing-bracket")
+            resource.notifies(:run, "typo[missing-closing-bracket")
           end.to raise_error(Chef::Exceptions::InvalidResourceSpecification)
         end
       end
     end
 
     describe "with a resource reference" do
-      before do
-        @notified_resource = Chef::Resource.new("punk", @run_context)
-      end
+      let(:notified_resource) { Chef::Resource.new("punk", run_context) }
 
       it "creates a delayed notification when timing is not specified" do
-        @resource.notifies(:run, @notified_resource)
-        expect(@run_context.delayed_notification_collection.size).to eq(1)
+        resource.notifies(:run, notified_resource)
+        expect(run_context.delayed_notification_collection.size).to eq(1)
       end
 
       it "creates a delayed notification when :delayed is not specified" do
-        @resource.notifies(:run, @notified_resource, :delayed)
-        expect(@run_context.delayed_notification_collection.size).to eq(1)
+        resource.notifies(:run, notified_resource, :delayed)
+        expect(run_context.delayed_notification_collection.size).to eq(1)
       end
 
       it "creates an immediate notification when :immediate is specified" do
-        @resource.notifies(:run, @notified_resource, :immediate)
-        expect(@run_context.immediate_notification_collection.size).to eq(1)
+        resource.notifies(:run, notified_resource, :immediate)
+        expect(run_context.immediate_notification_collection.size).to eq(1)
       end
 
       it "creates an immediate notification when :immediately is specified" do
-        @resource.notifies(:run, @notified_resource, :immediately)
-        expect(@run_context.immediate_notification_collection.size).to eq(1)
+        resource.notifies(:run, notified_resource, :immediately)
+        expect(run_context.immediate_notification_collection.size).to eq(1)
       end
     end
 
   end
 
   describe "resource sensitive attribute" do
-
-    before(:each) do
-       @resource_file = Chef::Resource::File.new("/nonexistent/CHEF-5098/file", @run_context)
-       @action = :create
-    end
+    let(:resource_file) { Chef::Resource::File.new("/nonexistent/CHEF-5098/file", run_context) }
+    let(:action) { :create }
 
     def compiled_resource_data(resource, action, err)
       error_inspector = Chef::Formatters::ErrorInspectors::ResourceFailureInspector.new(resource, action, err)
@@ -960,19 +962,19 @@ describe Chef::Resource do
     end
 
     it "set to false by default" do
-      expect(@resource.sensitive).to be_falsey
+      expect(resource.sensitive).to be_falsey
     end
 
     it "when set to false should show compiled resource for failed resource" do
-      expect { @resource_file.run_action(@action) }.to raise_error { |err|
-            expect(compiled_resource_data(@resource_file, @action, err)).to match 'path "/nonexistent/CHEF-5098/file"'
+      expect { resource_file.run_action(action) }.to raise_error { |err|
+            expect(compiled_resource_data(resource_file, action, err)).to match 'path "/nonexistent/CHEF-5098/file"'
           }
     end
 
     it "when set to true should show compiled resource for failed resource" do
-      @resource_file.sensitive true
-      expect { @resource_file.run_action(@action) }.to raise_error { |err|
-            expect(compiled_resource_data(@resource_file, @action, err)).to eql("suppressed sensitive resource output")
+      resource_file.sensitive true
+      expect { resource_file.run_action(action) }.to raise_error { |err|
+            expect(compiled_resource_data(resource_file, action, err)).to eql("suppressed sensitive resource output")
           }
     end