Merge branch 'complexity/rubocop-metrics' into 'master'

Enable rubocop metrics

This enables rubocop metrics like CyclomaticComplexity and ABCSize.
Initial threshold values are high, should be probably decreased.

See merge request !1802

.rubocop.yml

@@ -735,23 +735,39 @@ Metrics/AbcSize:
   Description: >-
                  A calculated magnitude based on number of assignments,
                  branches, and conditions.
-  Enabled: false
+  Enabled: true
+  Max: 70
+
+Metrics/CyclomaticComplexity:
+  Description: >-
+                 A complexity metric that is strongly correlated to the number
+                 of test cases needed to validate a method.
+  Enabled: true
+  Max: 17
+
+Metrics/PerceivedComplexity:
+  Description: >-
+                 A complexity metric geared towards measuring complexity for a
+                 human reader.
+  Enabled: true
+  Max: 17
+
+Metrics/ParameterLists:
+  Description: 'Avoid parameter lists longer than three or four parameters.'
+  StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#too-many-params'
+  Enabled: true
+  Max: 8
 
 Metrics/BlockNesting:
   Description: 'Avoid excessive block nesting'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#three-is-the-number-thou-shalt-count'
-  Enabled: false
+  Enabled: true
+  Max: 4
 
 Metrics/ClassLength:
   Description: 'Avoid classes longer than 100 lines of code.'
   Enabled: false
 
-Metrics/CyclomaticComplexity:
-  Description: >-
-                 A complexity metric that is strongly correlated to the number
-                 of test cases needed to validate a method.
-  Enabled: false
-
 Metrics/LineLength:
   Description: 'Limit lines to 80 characters.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#80-character-limits'
@@ -762,17 +778,6 @@ Metrics/MethodLength:
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#short-methods'
   Enabled: false
 
-Metrics/ParameterLists:
-  Description: 'Avoid parameter lists longer than three or four parameters.'
-  StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#too-many-params'
-  Enabled: false
-
-Metrics/PerceivedComplexity:
-  Description: >-
-                 A complexity metric geared towards measuring complexity for a
-                 human reader.
-  Enabled: false
-
 #################### Lint ################################
 ### Warnings
 

app/mailers/emails/projects.rb

@@ -59,85 +59,17 @@ module Emails
            subject: subject("Project was moved"))
     end
 
-    def repository_push_email(project_id, recipient,  author_id: nil, 
-                                                      ref: nil, 
-                                                      action: nil, 
-                                                      compare: nil, 
-                                                      reverse_compare: false, 
-                                                      send_from_committer_email: false, 
-                                                      disable_diffs: false)
-      unless author_id && ref && action
-        raise ArgumentError, "missing keywords: author_id, ref, action"
-      end
-
-      @project = Project.find(project_id)
-      @current_user = @author  = User.find(author_id)
-      @reverse_compare = reverse_compare
-      @compare = compare
-      @ref_name  = Gitlab::Git.ref_name(ref)
-      @ref_type  = Gitlab::Git.tag_ref?(ref) ? "tag" : "branch"
-      @action  = action
-      @disable_diffs = disable_diffs
-
-      if @compare
-        @commits = Commit.decorate(compare.commits, @project)
-        @diffs   = compare.diffs
-      end
+    def repository_push_email(project_id, recipient, opts = {})
+      @message =
+        Gitlab::Email::Message::RepositoryPush.new(self, project_id, recipient, opts)
 
-      @action_name = 
-        case action
-        when :create
-          "pushed new"
-        when :delete
-          "deleted"
-        else
-          "pushed to"
-        end
-
-      @subject = "[Git]"
-      @subject << "[#{@project.path_with_namespace}]"
-      @subject << "[#{@ref_name}]" if action == :push
-      @subject << " "
-
-      if action == :push
-        if @commits.length > 1
-          @target_url = namespace_project_compare_url(@project.namespace,
-                                                      @project,
-                                                      from: Commit.new(@compare.base, @project),
-                                                      to:   Commit.new(@compare.head, @project))
-          @subject << "Deleted " if @reverse_compare
-          @subject << "#{@commits.length} commits: #{@commits.first.title}"
-        else
-          @target_url = namespace_project_commit_url(@project.namespace,
-                                                     @project, @commits.first)
-
-          @subject << "Deleted 1 commit: " if @reverse_compare
-          @subject << @commits.first.title
-        end
-      else
-        unless action == :delete
-          @target_url = namespace_project_tree_url(@project.namespace,
-                                                   @project, @ref_name)
-        end
-
-        subject_action = @action_name.dup
-        subject_action[0] = subject_action[0].capitalize
-        @subject << "#{subject_action} #{@ref_type} #{@ref_name}"
-      end
-
-      @disable_footer = true
-
-      reply_to = 
-        if send_from_committer_email && can_send_from_user_email?(@author)
-          @author.email
-        else
-          Gitlab.config.gitlab.email_reply_to
-        end
+      # used in notify layout
+      @target_url = @message.target_url
 
-      mail(from:      sender(author_id, send_from_committer_email),
-           reply_to:  reply_to,
-           to:        recipient,
-           subject:   @subject)
+      mail(from:      sender(@message.author_id, @message.send_from_committer_email?),
+           reply_to:  @message.reply_to,
+           to:        @message.recipient,
+           subject:   @message.subject)
     end
   end
 end

app/mailers/notify.rb

@@ -33,13 +33,13 @@ class Notify < BaseMailer
     allowed_domains
   end
 
-  private
-
   def can_send_from_user_email?(sender)
     sender_domain = sender.email.split("@").last
     self.class.allowed_email_domains.include?(sender_domain)
   end
 
+  private
+
   # Return an email address that displays the name of the sender.
   # Only the displayed name changes; the actual email address is always the same.
   def sender(sender_id, send_from_user_email = false)

app/views/notify/repository_push_email.html.haml

-%h3 #{@author.name} #{@action_name} #{@ref_type} #{@ref_name} at #{link_to @project.name_with_namespace, namespace_project_url(@project.namespace, @project)}
+%h3
+  #{@message.author_name} #{@message.action_name} #{@message.ref_type} #{@message.ref_name}
+  at #{link_to(@message.project_name_with_namespace, namespace_project_url(@message.project_namespace, @message.project))}
 
-- if @compare
-  - if @reverse_compare
+- if @message.compare
+  - if @message.reverse_compare?
     %p
       %strong WARNING:
       The push did not contain any new commits, but force pushed to delete the commits and changes below.
 
   %h4
-    = @reverse_compare ? "Deleted commits:" : "Commits:"
+    = @message.reverse_compare? ? "Deleted commits:" : "Commits:"
 
   %ul
-    - @commits.each do |commit|
+    - @message.commits.each do |commit|
       %li
-        %strong #{link_to commit.short_id, namespace_project_commit_url(@project.namespace, @project, commit)}
+        %strong #{link_to(commit.short_id, namespace_project_commit_url(@message.project_namespace, @message.project, commit))}
         %div
           %span by #{commit.author_name}
           %i at #{commit.committed_date.strftime("%Y-%m-%dT%H:%M:%SZ")}
         %pre.commit-message 
           = commit.safe_message
 
-  %h4 #{pluralize @diffs.count, "changed file"}:
+  %h4 #{pluralize @message.diffs_count, "changed file"}:
 
   %ul
-    - @diffs.each_with_index do |diff, i|
+    - @message.diffs.each_with_index do |diff, i|
       %li.file-stats
-        %a{href: "#{@target_url if @disable_diffs}#diff-#{i}" }
+        %a{href: "#{@message.target_url if @message.disable_diffs?}#diff-#{i}" }
           - if diff.deleted_file
             %span.deleted-file
               −
@@ -40,11 +42,11 @@
           - else
             = diff.new_path
 
-  - unless @disable_diffs
+  - unless @message.disable_diffs?
     %h4 Changes:
-    - @diffs.each_with_index do |diff, i|
+    - @message.diffs.each_with_index do |diff, i|
       %li{id: "diff-#{i}"}
-        %a{href: @target_url + "#diff-#{i}"}
+        %a{href: @message.target_url + "#diff-#{i}"}
           - if diff.deleted_file
             %strong
               = diff.old_path
@@ -62,5 +64,5 @@
         = color_email_diff(diff.diff)
         %br
 
-  - if @compare.timeout
+  - if @message.compare_timeout
     %h5 Huge diff. To prevent performance issues changes are hidden

app/views/notify/repository_push_email.text.haml

-#{@author.name} #{@action_name} #{@ref_type} #{@ref_name} at #{@project.name_with_namespace}
-- if @compare
+#{@message.author_name} #{@message.action_name} #{@message.ref_type} #{@message.ref_name} at #{@message.project_name_with_namespace}
+- if @message.compare
   \
   \
-  - if @reverse_compare
+  - if @message.reverse_compare?
     WARNING: The push did not contain any new commits, but force pushed to delete the commits and changes below.
     \
     \
-  = @reverse_compare ? "Deleted commits:" : "Commits:"
-  - @commits.each do |commit|
+  = @message.reverse_compare? ? "Deleted commits:" : "Commits:"
+  - @message.commits.each do |commit|
     #{commit.short_id} by #{commit.author_name} at #{commit.committed_date.strftime("%Y-%m-%dT%H:%M:%SZ")}
     #{commit.safe_message}
     \- - - - -
   \
   \
-  #{pluralize @diffs.count, "changed file"}:
+  #{pluralize @message.diffs_count, "changed file"}:
   \
-  - @diffs.each do |diff|
+  - @message.diffs.each do |diff|
     - if diff.deleted_file
       \- − #{diff.old_path}
     - elsif diff.renamed_file
@@ -24,11 +24,11 @@
       \- + #{diff.new_path}
     - else
       \- #{diff.new_path}
-  - unless @disable_diffs
+  - unless @message.disable_diffs?
     \
     \
     Changes:
-    - @diffs.each do |diff|
+    - @message.diffs.each do |diff|
       \
       \=====================================
       - if diff.deleted_file
@@ -39,11 +39,11 @@
         = diff.new_path
       \=====================================
       != diff.diff
-  - if @compare.timeout
+  - if @message.compare_timeout
     \
     \
     Huge diff. To prevent performance issues it was hidden
-  - if @target_url
+  - if @message.target_url
     \
     \
-    View it on GitLab: #{@target_url}
+    View it on GitLab: #{@message.target_url}

lib/ci/gitlab_ci_yaml_processor.rb

@@ -132,26 +132,36 @@ module Ci
     end
 
     def validate_job!(name, job)
+      validate_job_name!(name)
+      validate_job_keys!(name, job)
+      validate_job_types!(name, job)
+
+      validate_job_stage!(name, job) if job[:stage]
+      validate_job_cache!(name, job) if job[:cache]
+      validate_job_artifacts!(name, job) if job[:artifacts]
+    end
+
+    private
+
+    def validate_job_name!(name)
       if name.blank? || !validate_string(name)
         raise ValidationError, "job name should be non-empty string"
       end
+    end
 
+    def validate_job_keys!(name, job)
       job.keys.each do |key|
         unless ALLOWED_JOB_KEYS.include? key
           raise ValidationError, "#{name} job: unknown parameter #{key}"
         end
       end
+    end
 
+    def validate_job_types!(name, job)
       if !validate_string(job[:script]) && !validate_array_of_strings(job[:script])
         raise ValidationError, "#{name} job: script should be a string or an array of a strings"
       end
 
-      if job[:stage]
-        unless job[:stage].is_a?(String) && job[:stage].in?(stages)
-          raise ValidationError, "#{name} job: stage parameter should be #{stages.join(", ")}"
-        end
-      end
-
       if job[:image] && !validate_string(job[:image])
         raise ValidationError, "#{name} job: image should be a string"
       end
@@ -172,7 +182,22 @@ module Ci
         raise ValidationError, "#{name} job: except parameter should be an array of strings"
       end
 
-      if job[:cache]
+      if job[:allow_failure] && !validate_boolean(job[:allow_failure])
+        raise ValidationError, "#{name} job: allow_failure parameter should be an boolean"
+      end
+
+      if job[:when] && !job[:when].in?(%w(on_success on_failure always))
+        raise ValidationError, "#{name} job: when parameter should be on_success, on_failure or always"
+      end
+    end
+
+    def validate_job_stage!(name, job)
+      unless job[:stage].is_a?(String) && job[:stage].in?(stages)
+        raise ValidationError, "#{name} job: stage parameter should be #{stages.join(", ")}"
+      end
+    end
+
+    def validate_job_cache!(name, job)
       if job[:cache][:untracked] && !validate_boolean(job[:cache][:untracked])
         raise ValidationError, "#{name} job: cache:untracked parameter should be an boolean"
       end
@@ -182,7 +207,7 @@ module Ci
       end
     end
 
-      if job[:artifacts]
+    def validate_job_artifacts!(name, job)
       if job[:artifacts][:untracked] && !validate_boolean(job[:artifacts][:untracked])
         raise ValidationError, "#{name} job: artifacts:untracked parameter should be an boolean"
       end
@@ -192,17 +217,6 @@ module Ci
       end
     end
 
-      if job[:allow_failure] && !validate_boolean(job[:allow_failure])
-        raise ValidationError, "#{name} job: allow_failure parameter should be an boolean"
-      end
-
-      if job[:when] && !job[:when].in?(%w(on_success on_failure always))
-        raise ValidationError, "#{name} job: when parameter should be on_success, on_failure or always"
-      end
-    end
-
-    private
-
     def validate_array_of_strings(values)
       values.is_a?(Array) && values.all? { |value| validate_string(value) }
     end

lib/gitlab/email/message/repository_push.rb

+module Gitlab
+  module Email
+    module Message
+      class RepositoryPush
+        attr_accessor :recipient
+        attr_reader :author_id, :ref, :action
+
+        include Gitlab::Application.routes.url_helpers
+
+        delegate :namespace, :name_with_namespace, to: :project, prefix: :project
+        delegate :name, to: :author, prefix: :author
+
+        def initialize(notify, project_id, recipient, opts = {})
+          raise ArgumentError, 'Missing options: author_id, ref, action' unless
+            opts[:author_id] && opts[:ref] && opts[:action]
+
+          @notify = notify
+          @project_id = project_id
+          @recipient = recipient
+          @opts = opts.dup
+
+          @author_id = @opts.delete(:author_id)
+          @ref = @opts.delete(:ref)
+          @action = @opts.delete(:action)
+        end
+
+        def project
+          @project ||= Project.find(@project_id)
+        end
+
+        def author
+          @author ||= User.find(@author_id)
+        end
+
+        def commits
+          @commits ||= (Commit.decorate(compare.commits, project) if compare)
+        end
+
+        def diffs
+          @diffs ||= (compare.diffs if compare)
+        end
+
+        def diffs_count
+          diffs.count if diffs
+        end
+
+        def compare
+          @opts[:compare]
+        end
+
+        def compare_timeout
+          compare.timeout if compare
+        end
+
+        def reverse_compare?
+          @opts[:reverse_compare] || false
+        end
+
+        def disable_diffs?
+          @opts[:disable_diffs] || false
+        end
+
+        def send_from_committer_email?
+          @opts[:send_from_committer_email] || false
+        end
+
+        def action_name
+          @action_name ||=
+            case @action
+            when :create
+              'pushed new'
+            when :delete
+              'deleted'
+            else
+              'pushed to'
+            end
+        end
+
+        def ref_name
+          @ref_name ||= Gitlab::Git.ref_name(@ref)
+        end
+
+        def ref_type
+          @ref_type ||= Gitlab::Git.tag_ref?(@ref) ? 'tag' : 'branch'
+        end
+
+        def target_url
+          if @action == :push && commits
+            if commits.length > 1
+              namespace_project_compare_url(project_namespace,
+                                            project,
+                                            from: Commit.new(compare.base, project),
+                                            to:   Commit.new(compare.head, project))
+            else
+              namespace_project_commit_url(project_namespace,
+                                           project, commits.first)
+            end
+          else
+            unless @action == :delete
+              namespace_project_tree_url(project_namespace,
+                                         project, ref_name)
+            end
+          end
+        end
+
+        def reply_to
+          if send_from_committer_email? && @notify.can_send_from_user_email?(author)
+            author.email
+          else
+            Gitlab.config.gitlab.email_reply_to
+          end
+        end
+
+        def subject
+          subject_text = '[Git]'
+          subject_text << "[#{project.path_with_namespace}]"
+          subject_text << "[#{ref_name}]" if @action == :push
+          subject_text << ' '
+
+          if @action == :push && commits
+            if commits.length > 1
+              subject_text << "Deleted " if reverse_compare?
+              subject_text << "#{commits.length} commits: #{commits.first.title}"
+            else
+              subject_text << "Deleted 1 commit: " if reverse_compare?
+              subject_text << commits.first.title
+            end
+          else
+            subject_action = action_name.dup
+            subject_action[0] = subject_action[0].capitalize
+            subject_text << "#{subject_action} #{ref_type} #{ref_name}"
+          end
+        end
+      end
+    end
+  end
+end

spec/lib/ci/gitlab_ci_yaml_processor_spec.rb

@@ -532,21 +532,21 @@ module Ci
       end
 
       it "returns errors if job stage is not a string" do
-        config = YAML.dump({ rspec: { script: "test", type: 1, allow_failure: "string" } })
+        config = YAML.dump({ rspec: { script: "test", type: 1 } })
         expect do
           GitlabCiYamlProcessor.new(config, path)
         end.to raise_error(GitlabCiYamlProcessor::ValidationError, "rspec job: stage parameter should be build, test, deploy")
       end
 
       it "returns errors if job stage is not a pre-defined stage" do
-        config = YAML.dump({ rspec: { script: "test", type: "acceptance", allow_failure: "string" } })
+        config = YAML.dump({ rspec: { script: "test", type: "acceptance" } })
         expect do
           GitlabCiYamlProcessor.new(config, path)
         end.to raise_error(GitlabCiYamlProcessor::ValidationError, "rspec job: stage parameter should be build, test, deploy")
       end
 
       it "returns errors if job stage is not a defined stage" do
-        config = YAML.dump({ types: ["build", "test"], rspec: { script: "test", type: "acceptance", allow_failure: "string" } })
+        config = YAML.dump({ types: ["build", "test"], rspec: { script: "test", type: "acceptance" } })
         expect do
           GitlabCiYamlProcessor.new(config, path)
         end.to raise_error(GitlabCiYamlProcessor::ValidationError, "rspec job: stage parameter should be build, test")

spec/lib/gitlab/email/message/repository_push_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Email::Message::RepositoryPush do
+  include RepoHelpers
+
+  let!(:group) { create(:group, name: 'my_group') }
+  let!(:project) { create(:project, name: 'my_project', namespace: group) }
+  let!(:author) { create(:author, name: 'Author') }
+
+  let(:message) do
+    described_class.new(Notify, project.id, 'recipient@example.com', opts)
+  end
+
+  context 'new commits have been pushed to repository' do
+    let(:opts) do
+      { author_id: author.id, ref: 'master', action: :push, compare: compare,
+        send_from_committer_email: true }
+    end
+    let(:compare) do
+      Gitlab::Git::Compare.new(project.repository.raw_repository,
+                               sample_image_commit.id, sample_commit.id)
+    end
+
+    describe '#project' do
+      subject { message.project }
+      it { is_expected.to eq project }
+      it { is_expected.to be_an_instance_of Project }
+    end
+
+    describe '#project_namespace' do
+      subject { message.project_namespace }
+      it { is_expected.to eq group }
+      it { is_expected.to be_kind_of Namespace }
+    end
+
+    describe '#project_name_with_namespace' do
+      subject { message.project_name_with_namespace }
+      it { is_expected.to eq 'my_group / my_project' }
+    end
+
+    describe '#author' do
+      subject { message.author }
+      it { is_expected.to eq author }
+      it { is_expected.to be_an_instance_of User }
+    end
+
+    describe '#author_name' do
+      subject { message.author_name }
+      it { is_expected.to eq 'Author' }
+    end
+
+    describe '#commits' do
+      subject { message.commits }
+      it { is_expected.to be_kind_of Array }
+      it { is_expected.to all(be_instance_of Commit) }
+    end
+
+    describe '#diffs' do
+      subject { message.diffs }
+      it { is_expected.to all(be_an_instance_of Gitlab::Git::Diff) }
+    end
+
+    describe '#diffs_count' do
+      subject { message.diffs_count }
+      it { is_expected.to eq compare.diffs.count }
+    end
+
+    describe '#compare' do
+      subject { message.compare }
+      it { is_expected.to be_an_instance_of Gitlab::Git::Compare }
+    end
+
+    describe '#compare_timeout' do
+      subject { message.compare_timeout }
+      it { is_expected.to eq compare.timeout }
+    end
+
+    describe '#reverse_compare?' do
+      subject { message.reverse_compare? }
+      it { is_expected.to eq false }
+    end
+
+    describe '#disable_diffs?' do
+      subject { message.disable_diffs? }
+      it { is_expected.to eq false }
+    end
+
+    describe '#send_from_committer_email?' do
+      subject { message.send_from_committer_email? }
+      it { is_expected.to eq true }
+    end
+
+    describe '#action_name' do
+      subject { message.action_name }
+      it { is_expected.to eq 'pushed to' }
+    end
+
+    describe '#ref_name' do
+      subject { message.ref_name }
+      it { is_expected.to eq 'master' }
+    end
+
+    describe '#ref_type' do
+      subject { message.ref_type }
+      it { is_expected.to eq 'branch' }
+    end
+
+    describe '#target_url' do
+      subject { message.target_url }
+      it { is_expected.to include 'compare' }
+      it { is_expected.to include compare.commits.first.parents.first.id }
+      it { is_expected.to include compare.commits.last.id }
+    end
+
+    describe '#subject' do
+      subject { message.subject }
+      it { is_expected.to include "[Git][#{project.path_with_namespace}]" }
+      it { is_expected.to include "#{compare.commits.length} commits" }
+      it { is_expected.to include compare.commits.first.message.split("\n").first }
+    end
+  end
+end

spec/support/mentionable_shared_examples.rb

@@ -4,7 +4,7 @@
 # - let(:backref_text) { "the way that +subject+ should refer to itself in backreferences " }
 # - let(:set_mentionable_text) { lambda { |txt| "block that assigns txt to the subject's mentionable_text" } }
 
-def common_mentionable_setup
+shared_context 'mentionable context' do
   let(:project) { subject.project }
   let(:author)  { subject.author }
 
@@ -56,7 +56,7 @@ def common_mentionable_setup
 end
 
 shared_examples 'a mentionable' do
-  common_mentionable_setup
+  include_context 'mentionable context'
 
   it 'generates a descriptive back-reference' do
     expect(subject.gfm_reference).to eq(backref_text)
@@ -88,7 +88,7 @@ shared_examples 'a mentionable' do
 end
 
 shared_examples 'an editable mentionable' do
-  common_mentionable_setup
+  include_context 'mentionable context'
 
   it_behaves_like 'a mentionable'