add some integration testing around accumulators

probably also our best documentation on how to write accumulators right
now

Signed-off-by: Lamont Granquist <lamont@scriptkiddie.org>

1 files changed, 236 insertions, 0 deletions

diff --git a/spec/integration/recipes/accumulator_spec.rb b/spec/integration/recipes/accumulator_spec.rb
new file mode 100644
index 0000000000..b2107b2c02
--- /dev/null
+++ b/spec/integration/recipes/accumulator_spec.rb
@@ -0,0 +1,236 @@
+require "support/shared/integration/integration_helper"
+require "chef/mixin/shell_out"
+
+describe "Accumulators" do
+  include IntegrationSupport
+  include Chef::Mixin::ShellOut
+
+  let(:chef_dir) { File.expand_path("../../../../bin", __FILE__) }
+
+  # Invoke `chef-client` as `ruby PATH/TO/chef-client`. This ensures the
+  # following constraints are satisfied:
+  # * Windows: windows can only run batch scripts as bare executables. Rubygems
+  # creates batch wrappers for installed gems, but we don't have batch wrappers
+  # in the source tree.
+  # * Other `chef-client` in PATH: A common case is running the tests on a
+  # machine that has omnibus chef installed. In that case we need to ensure
+  # we're running `chef-client` from the source tree and not the external one.
+  # cf. CHEF-4914
+  let(:chef_client) { "ruby '#{chef_dir}/chef-client' --minimal-ohai" }
+
+  let(:aliases_temppath) do
+    t = Tempfile.new("chef_accumulator_test")
+    path = t.path
+    t.close
+    t.unlink
+    path
+  end
+
+  when_the_repository "edit_resource-based delayed accumulators work" do
+    before do
+      directory "cookbooks/x" do
+        file "resources/email_alias.rb", <<-EOM
+          provides :email_alias
+          resource_name :email_alias
+
+          property :address, String, name_property: true, identity: true
+          property :recipients, Array
+
+          default_action :create
+
+          action :create do
+            with_run_context :root do
+              edit_resource(:template, "#{aliases_temppath}") do |new_resource|
+                source "aliases.erb"
+                variables[:aliases] ||= {}
+                variables[:aliases][new_resource.address] ||= []
+                variables[:aliases][new_resource.address] += new_resource.recipients
+                action :nothing
+              end
+            end
+            log "force delayed notification" do
+              notifies :create, "template[#{aliases_temppath}]", :delayed
+            end
+          end
+        EOM
+
+        file "resources/nested.rb", <<-EOM
+          provides :nested
+          resource_name :nested
+
+          property :address, String, name_property: true, identity: true
+          property :recipients, Array
+
+          default_action :create
+
+          action :create do
+            email_alias address do
+              recipients new_resource.recipients
+            end
+          end
+        EOM
+
+        file "resources/doubly_nested.rb", <<-EOM
+          provides :doubly_nested
+          resource_name :doubly_nested
+
+          property :address, String, name_property: true, identity: true
+          property :recipients, Array
+
+          default_action :create
+
+          action :create do
+            nested address do
+              recipients new_resource.recipients
+            end
+          end
+        EOM
+
+        file "recipes/default.rb", <<-EOM
+          email_alias "outer1" do
+            recipients [ "out1a", "out1b" ]
+          end
+
+          nested "nested1" do
+            recipients [ "nested1a", "nested1b" ]
+          end
+
+          email_alias "outer2" do
+            recipients [ "out2a", "out2b" ]
+          end
+
+          doubly_nested "nested2" do
+            recipients [ "nested2a", "nested2b" ]
+          end
+
+          email_alias "outer3" do
+            recipients [ "out3a", "out3b" ]
+          end
+        EOM
+
+        file "templates/aliases.erb", <<-EOM.gsub(/^\s+/, "")
+          <%= pp @aliases %>
+        EOM
+      end # directory 'cookbooks/x'
+    end
+
+    it "should complete with success" do
+      file "config/client.rb", <<-EOM
+        local_mode true
+        cookbook_path "#{path_to('cookbooks')}"
+        log_level :warn
+      EOM
+
+      result = shell_out("#{chef_client} -c \"#{path_to('config/client.rb')}\" --no-color -F doc -o 'x::default'", :cwd => chef_dir)
+      result.error!
+      # runs only a single template resource (in the outer run context, as a delayed resource)
+      expect(result.stdout.scan(/template\S+ action create/).size).to eql(1)
+      # hash order is insertion order in ruby >= 1.9, so this next line does test that all calls were in the correct order
+      expect(IO.read(aliases_temppath).chomp).to eql('{"outer1"=>["out1a", "out1b"], "nested1"=>["nested1a", "nested1b"], "outer2"=>["out2a", "out2b"], "nested2"=>["nested2a", "nested2b"], "outer3"=>["out3a", "out3b"]}')
+    end
+  end
+
+  when_the_repository "find_resource-based delayed accumulators work" do
+    before do
+      directory "cookbooks/x" do
+        file "resources/email_alias.rb", <<-EOM
+          provides :email_alias
+          resource_name :email_alias
+
+          property :address, String, name_property: true, identity: true
+          property :recipients, Array
+
+          default_action :create
+
+          action :create do
+            r = with_run_context :root do
+              find_resource(:template, "#{aliases_temppath}") do
+                source "aliases.erb"
+                variables[:aliases] = {}
+                action :nothing
+              end
+            end
+            r.variables[:aliases][address] ||= []
+            r.variables[:aliases][address] += new_resource.recipients
+            log "force delayed notification" do
+              notifies :create, "template[#{aliases_temppath}]", :delayed
+            end
+          end
+        EOM
+
+        file "resources/nested.rb", <<-EOM
+          provides :nested
+          resource_name :nested
+
+          property :address, String, name_property: true, identity: true
+          property :recipients, Array
+
+          default_action :create
+
+          action :create do
+            email_alias address do
+              recipients new_resource.recipients
+            end
+          end
+        EOM
+
+        file "resources/doubly_nested.rb", <<-EOM
+          provides :doubly_nested
+          resource_name :doubly_nested
+
+          property :address, String, name_property: true, identity: true
+          property :recipients, Array
+
+          default_action :create
+
+          action :create do
+            nested address do
+              recipients new_resource.recipients
+            end
+          end
+        EOM
+
+        file "recipes/default.rb", <<-EOM
+          email_alias "outer1" do
+            recipients [ "out1a", "out1b" ]
+          end
+
+          nested "nested1" do
+            recipients [ "nested1a", "nested1b" ]
+          end
+
+          email_alias "outer2" do
+            recipients [ "out2a", "out2b" ]
+          end
+
+          doubly_nested "nested2" do
+            recipients [ "nested2a", "nested2b" ]
+          end
+
+          email_alias "outer3" do
+            recipients [ "out3a", "out3b" ]
+          end
+        EOM
+
+        file "templates/aliases.erb", <<-EOM.gsub(/^\s+/, "")
+          <%= pp @aliases %>
+        EOM
+      end # directory 'cookbooks/x'
+    end
+
+    it "should complete with success" do
+      file "config/client.rb", <<-EOM
+        local_mode true
+        cookbook_path "#{path_to('cookbooks')}"
+        log_level :warn
+      EOM
+
+      result = shell_out("#{chef_client} -c \"#{path_to('config/client.rb')}\" --no-color -F doc -o 'x::default'", :cwd => chef_dir)
+      result.error!
+      # runs only a single template resource (in the outer run context, as a delayed resource)
+      expect(result.stdout.scan(/template\S+ action create/).size).to eql(1)
+      # hash order is insertion order in ruby >= 1.9, so this next line does test that all calls were in the correct order
+      expect(IO.read(aliases_temppath).chomp).to eql('{"outer1"=>["out1a", "out1b"], "nested1"=>["nested1a", "nested1b"], "outer2"=>["out2a", "out2b"], "nested2"=>["nested2a", "nested2b"], "outer3"=>["out3a", "out3b"]}')
+    end
+  end
+end