Merge branch 'master' into 40468-empty-states

* master: (76 commits)
  Fix image view mode
  Remove the need for destroy and add a comment in the spec
  Use build instead of create in importer spec
  Simplify normalizing of paths
  Fix failing importer test case on MySQL due to missing trailing slash in root path
  Fix gitlab:import:repos Rake task moving repositories into the wrong location
  Allow git pull/push on project redirects
  Resolve "Include asset_sync gem"
  Use prefix for TableOfContents filter hrefs
  Resolve "No feedback when checking on checklist if potential spam was detected"
  Fix Rubocop
  Fix N+1 query when displaying events
  Add Chain::Command specs
  Fix a bug of before_sha being inproperly evaluated to `checkout_sha`
  Implement and use Gitlab::Ci::Pipeline::Chain::Command
  Fix invalid pipeline build chain tag evaluation
  Add docs explaining why you get signed out with "Remember me"
  Move the circuitbreaker check out in a separate process
  Migrate Git::Repository#fsck to Gitaly
  Fix new personal access token showing up in a flash message
  ...

33 files changed, 919 insertions, 327 deletions

diff --git a/spec/lib/gitlab/backup/manager_spec.rb b/spec/lib/backup/manager_spec.rb
index b68301a066a..b68301a066a 100644
--- a/spec/lib/gitlab/backup/manager_spec.rb
+++ b/spec/lib/backup/manager_spec.rb
diff --git a/spec/lib/backup/repository_spec.rb b/spec/lib/backup/repository_spec.rb
new file mode 100644
index 00000000000..6ee3d531d6e
--- /dev/null
+++ b/spec/lib/backup/repository_spec.rb
@@ -0,0 +1,69 @@
+require 'spec_helper'
+
+describe Backup::Repository do
+  let(:progress) { StringIO.new }
+  let!(:project) { create(:project) }
+
+  before do
+    allow(progress).to receive(:puts)
+    allow(progress).to receive(:print)
+
+    allow_any_instance_of(String).to receive(:color) do |string, _color|
+      string
+    end
+
+    allow_any_instance_of(described_class).to receive(:progress).and_return(progress)
+  end
+
+  describe '#dump' do
+    describe 'repo failure' do
+      before do
+        allow(Gitlab::Popen).to receive(:popen).and_return(['normal output', 0])
+      end
+
+      it 'does not raise error' do
+        expect { described_class.new.dump }.not_to raise_error
+      end
+    end
+  end
+
+  describe '#restore' do
+    describe 'command failure' do
+      before do
+        allow(Gitlab::Popen).to receive(:popen).and_return(['error', 1])
+      end
+
+      it 'shows the appropriate error' do
+        described_class.new.restore
+
+        expect(progress).to have_received(:puts).with("Ignoring error on #{project.full_path} - error")
+      end
+    end
+  end
+
+  describe '#empty_repo?' do
+    context 'for a wiki' do
+      let(:wiki) { create(:project_wiki) }
+
+      it 'invalidates the emptiness cache' do
+        expect(wiki.repository).to receive(:expire_emptiness_caches).once
+
+        wiki.empty?
+      end
+
+      context 'wiki repo has content' do
+        let!(:wiki_page) { create(:wiki_page, wiki: wiki) }
+
+        it 'returns true, regardless of bad cache value' do
+          expect(described_class.new.send(:empty_repo?, wiki)).to be(false)
+        end
+      end
+
+      context 'wiki repo does not have content' do
+        it 'returns true, regardless of bad cache value' do
+          expect(described_class.new.send(:empty_repo?, wiki)).to be_truthy
+        end
+      end
+    end
+  end
+end
diff --git a/spec/lib/banzai/filter/commit_reference_filter_spec.rb b/spec/lib/banzai/filter/commit_reference_filter_spec.rb
index 702fcac0c6f..080a5f57da9 100644
--- a/spec/lib/banzai/filter/commit_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/commit_reference_filter_spec.rb
@@ -92,6 +92,18 @@ describe Banzai::Filter::CommitReferenceFilter do
       expect(link).not_to match %r(https?://)
       expect(link).to eq urls.project_commit_url(project, reference, only_path: true)
     end
+
+    context "in merge request context" do
+      let(:noteable) { create(:merge_request, target_project: project, source_project: project) }
+      let(:commit) { noteable.commits.first }
+
+      it 'handles merge request contextual commit references' do
+        url = urls.diffs_project_merge_request_url(project, noteable, commit_id: commit.id)
+        doc = reference_filter("See #{reference}", noteable: noteable)
+
+        expect(doc.css('a').first[:href]).to eq(url)
+      end
+    end
   end
 
   context 'cross-project / cross-namespace complete reference' do
diff --git a/spec/lib/banzai/filter/table_of_contents_filter_spec.rb b/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
index 85eddde732e..0cfef4ff5bf 100644
--- a/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
+++ b/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
@@ -65,6 +65,13 @@ describe Banzai::Filter::TableOfContentsFilter do
         expect(doc.css('h2 a').first.attr('href')).to eq '#one-1'
       end
 
+      it 'prepends a prefix to digits-only ids' do
+        doc = filter(header(1, "123") + header(2, "1.0"))
+
+        expect(doc.css('h1 a').first.attr('href')).to eq '#anchor-123'
+        expect(doc.css('h2 a').first.attr('href')).to eq '#anchor-10'
+      end
+
       it 'supports Unicode' do
         doc = filter(header(1, '한글'))
         expect(doc.css('h1 a').first.attr('id')).to eq 'user-content-한글'
diff --git a/spec/lib/gitlab/backup/repository_spec.rb b/spec/lib/gitlab/backup/repository_spec.rb
deleted file mode 100644
index 535cce12780..00000000000
--- a/spec/lib/gitlab/backup/repository_spec.rb
+++ /dev/null
@@ -1,117 +0,0 @@
-require 'spec_helper'
-
-describe Backup::Repository do
-  let(:progress) { StringIO.new }
-  let!(:project) { create(:project) }
-
-  before do
-    allow(progress).to receive(:puts)
-    allow(progress).to receive(:print)
-
-    allow_any_instance_of(String).to receive(:color) do |string, _color|
-      string
-    end
-
-    allow_any_instance_of(described_class).to receive(:progress).and_return(progress)
-  end
-
-  describe '#dump' do
-    describe 'repo failure' do
-      before do
-        allow_any_instance_of(Repository).to receive(:empty_repo?).and_raise(Rugged::OdbError)
-        allow(Gitlab::Popen).to receive(:popen).and_return(['normal output', 0])
-      end
-
-      it 'does not raise error' do
-        expect { described_class.new.dump }.not_to raise_error
-      end
-
-      it 'shows the appropriate error' do
-        described_class.new.dump
-
-        expect(progress).to have_received(:puts).with("Ignoring repository error and continuing backing up project: #{project.full_path} - Rugged::OdbError")
-      end
-    end
-
-    describe 'command failure' do
-      before do
-        allow_any_instance_of(Repository).to receive(:empty_repo?).and_return(false)
-        allow(Gitlab::Popen).to receive(:popen).and_return(['error', 1])
-      end
-
-      it 'shows the appropriate error' do
-        described_class.new.dump
-
-        expect(progress).to have_received(:puts).with("Ignoring error on #{project.full_path} - error")
-      end
-    end
-  end
-
-  describe '#restore' do
-    describe 'command failure' do
-      before do
-        allow(Gitlab::Popen).to receive(:popen).and_return(['error', 1])
-      end
-
-      it 'shows the appropriate error' do
-        described_class.new.restore
-
-        expect(progress).to have_received(:puts).with("Ignoring error on #{project.full_path} - error")
-      end
-    end
-  end
-
-  describe '#empty_repo?' do
-    context 'for a wiki' do
-      let(:wiki) { create(:project_wiki) }
-
-      context 'wiki repo has content' do
-        let!(:wiki_page) { create(:wiki_page, wiki: wiki) }
-
-        before do
-          wiki.repository.exists? # initial cache
-        end
-
-        context '`repository.exists?` is incorrectly cached as false' do
-          before do
-            repo = wiki.repository
-            repo.send(:cache).expire(:exists?)
-            repo.send(:cache).fetch(:exists?) { false }
-            repo.send(:instance_variable_set, :@exists, false)
-          end
-
-          it 'returns false, regardless of bad cache value' do
-            expect(described_class.new.send(:empty_repo?, wiki)).to be_falsey
-          end
-        end
-
-        context '`repository.exists?` is correctly cached as true' do
-          it 'returns false' do
-            expect(described_class.new.send(:empty_repo?, wiki)).to be_falsey
-          end
-        end
-      end
-
-      context 'wiki repo does not have content' do
-        context '`repository.exists?` is incorrectly cached as true' do
-          before do
-            repo = wiki.repository
-            repo.send(:cache).expire(:exists?)
-            repo.send(:cache).fetch(:exists?) { true }
-            repo.send(:instance_variable_set, :@exists, true)
-          end
-
-          it 'returns true, regardless of bad cache value' do
-            expect(described_class.new.send(:empty_repo?, wiki)).to be_truthy
-          end
-        end
-
-        context '`repository.exists?` is correctly cached as false' do
-          it 'returns true' do
-            expect(described_class.new.send(:empty_repo?, wiki)).to be_truthy
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/spec/lib/gitlab/bare_repository_import/importer_spec.rb b/spec/lib/gitlab/bare_repository_import/importer_spec.rb
index 7f3bf5fc41c..8a83e446935 100644
--- a/spec/lib/gitlab/bare_repository_import/importer_spec.rb
+++ b/spec/lib/gitlab/bare_repository_import/importer_spec.rb
@@ -132,6 +132,23 @@ describe Gitlab::BareRepositoryImport::Importer, repository: true do
 
       expect(File).to exist(File.join(project.repository_storage_path, project.disk_path + '.git'))
     end
+
+    it 'moves an existing project to the correct path' do
+      # This is a quick way to get a valid repository instead of copying an
+      # existing one. Since it's not persisted, the importer will try to
+      # create the project.
+      project = build(:project, :repository)
+      original_commit_count = project.repository.commit_count
+
+      bare_repo = Gitlab::BareRepositoryImport::Repository.new(project.repository_storage_path, project.repository.path)
+      gitlab_importer = described_class.new(admin, bare_repo)
+
+      expect(gitlab_importer).to receive(:create_project).and_call_original
+
+      new_project = gitlab_importer.create_project_if_needed
+
+      expect(new_project.repository.commit_count).to eq(original_commit_count)
+    end
   end
 
   context 'with Wiki' do
diff --git a/spec/lib/gitlab/bare_repository_import/repository_spec.rb b/spec/lib/gitlab/bare_repository_import/repository_spec.rb
index 2db737f5fb6..61b73abcba4 100644
--- a/spec/lib/gitlab/bare_repository_import/repository_spec.rb
+++ b/spec/lib/gitlab/bare_repository_import/repository_spec.rb
@@ -46,6 +46,13 @@ describe ::Gitlab::BareRepositoryImport::Repository do
   describe '#project_full_path' do
     it 'returns the project full path' do
       expect(project_repo_path.repo_path).to eq('/full/path/to/repo.git')
+      expect(project_repo_path.project_full_path).to eq('to/repo')
+    end
+
+    it 'with no trailing slash in the root path' do
+      repo_path = described_class.new('/full/path', '/full/path/to/repo.git')
+
+      expect(repo_path.project_full_path).to eq('to/repo')
     end
   end
 end
diff --git a/spec/lib/gitlab/checks/project_moved_spec.rb b/spec/lib/gitlab/checks/project_moved_spec.rb
new file mode 100644
index 00000000000..fa1575e2177
--- /dev/null
+++ b/spec/lib/gitlab/checks/project_moved_spec.rb
@@ -0,0 +1,81 @@
+require 'rails_helper'
+
+describe Gitlab::Checks::ProjectMoved, :clean_gitlab_redis_shared_state do
+  let(:user) { create(:user) }
+  let(:project) { create(:project) }
+
+  describe '.fetch_redirct_message' do
+    context 'with a redirect message queue' do
+      it 'should return the redirect message' do
+        project_moved = described_class.new(project, user, 'foo/bar', 'http')
+        project_moved.add_redirect_message
+
+        expect(described_class.fetch_redirect_message(user.id, project.id)).to eq(project_moved.redirect_message)
+      end
+
+      it 'should delete the redirect message from redis' do
+        project_moved = described_class.new(project, user, 'foo/bar', 'http')
+        project_moved.add_redirect_message
+
+        expect(Gitlab::Redis::SharedState.with { |redis| redis.get("redirect_namespace:#{user.id}:#{project.id}") }).not_to be_nil
+        described_class.fetch_redirect_message(user.id, project.id)
+        expect(Gitlab::Redis::SharedState.with { |redis| redis.get("redirect_namespace:#{user.id}:#{project.id}") }).to be_nil
+      end
+    end
+
+    context 'with no redirect message queue' do
+      it 'should return nil' do
+        expect(described_class.fetch_redirect_message(1, 2)).to be_nil
+      end
+    end
+  end
+
+  describe '#add_redirect_message' do
+    it 'should queue a redirect message' do
+      project_moved = described_class.new(project, user, 'foo/bar', 'http')
+      expect(project_moved.add_redirect_message).to eq("OK")
+    end
+  end
+
+  describe '#redirect_message' do
+    context 'when the push is rejected' do
+      it 'should return a redirect message telling the user to try again' do
+        project_moved = described_class.new(project, user, 'foo/bar', 'http')
+        message = "Project 'foo/bar' was moved to '#{project.full_path}'." +
+          "\n\nPlease update your Git remote:" +
+          "\n\n  git remote set-url origin #{project.http_url_to_repo} and try again.\n"
+
+        expect(project_moved.redirect_message(rejected: true)).to eq(message)
+      end
+    end
+
+    context 'when the push is not rejected' do
+      it 'should return a redirect message' do
+        project_moved = described_class.new(project, user, 'foo/bar', 'http')
+        message = "Project 'foo/bar' was moved to '#{project.full_path}'." +
+          "\n\nPlease update your Git remote:" +
+          "\n\n  git remote set-url origin #{project.http_url_to_repo}\n"
+
+        expect(project_moved.redirect_message).to eq(message)
+      end
+    end
+  end
+
+  describe '#permanent_redirect?' do
+    context 'with a permanent RedirectRoute' do
+      it 'should return true' do
+        project.route.create_redirect('foo/bar', permanent: true)
+        project_moved = described_class.new(project, user, 'foo/bar', 'http')
+        expect(project_moved.permanent_redirect?).to be_truthy
+      end
+    end
+
+    context 'without a permanent RedirectRoute' do
+      it 'should return false' do
+        project.route.create_redirect('foo/bar')
+        project_moved = described_class.new(project, user, 'foo/bar', 'http')
+        expect(project_moved.permanent_redirect?).to be_falsy
+      end
+    end
+  end
+end
diff --git a/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb
index 0f1d72080c5..3ae7053a995 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb
@@ -6,46 +6,81 @@ describe Gitlab::Ci::Pipeline::Chain::Build do
   let(:pipeline) { Ci::Pipeline.new }
 
   let(:command) do
-    double('command', source: :push,
-                      origin_ref: 'master',
-                      checkout_sha: project.commit.id,
-                      after_sha: nil,
-                      before_sha: nil,
-                      trigger_request: nil,
-                      schedule: nil,
-                      project: project,
-                      current_user: user)
+    Gitlab::Ci::Pipeline::Chain::Command.new(
+      source: :push,
+      origin_ref: 'master',
+      checkout_sha: project.commit.id,
+      after_sha: nil,
+      before_sha: nil,
+      trigger_request: nil,
+      schedule: nil,
+      project: project,
+      current_user: user)
   end
 
   let(:step) { described_class.new(pipeline, command) }
 
   before do
     stub_repository_ci_yaml_file(sha: anything)
-
-    step.perform!
   end
 
   it 'never breaks the chain' do
+    step.perform!
+
     expect(step.break?).to be false
   end
 
   it 'fills pipeline object with data' do
+    step.perform!
+
     expect(pipeline.sha).not_to be_empty
     expect(pipeline.sha).to eq project.commit.id
     expect(pipeline.ref).to eq 'master'
+    expect(pipeline.tag).to be false
     expect(pipeline.user).to eq user
     expect(pipeline.project).to eq project
   end
 
   it 'sets a valid config source' do
+    step.perform!
+
     expect(pipeline.repository_source?).to be true
   end
 
   it 'returns a valid pipeline' do
+    step.perform!
+
     expect(pipeline).to be_valid
   end
 
   it 'does not persist a pipeline' do
+    step.perform!
+
     expect(pipeline).not_to be_persisted
   end
+
+  context 'when pipeline is running for a tag' do
+    let(:command) do
+      Gitlab::Ci::Pipeline::Chain::Command.new(
+        source: :push,
+        origin_ref: 'mytag',
+        checkout_sha: project.commit.id,
+        after_sha: nil,
+        before_sha: nil,
+        trigger_request: nil,
+        schedule: nil,
+        project: project,
+        current_user: user)
+    end
+
+    before do
+      allow_any_instance_of(Repository).to receive(:tag_exists?).with('mytag').and_return(true)
+
+      step.perform!
+    end
+
+    it 'correctly indicated that this is a tagged pipeline' do
+      expect(pipeline).to be_tag
+    end
+  end
 end
diff --git a/spec/lib/gitlab/ci/pipeline/chain/command_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/command_spec.rb
new file mode 100644
index 00000000000..75a177d2d1f
--- /dev/null
+++ b/spec/lib/gitlab/ci/pipeline/chain/command_spec.rb
@@ -0,0 +1,185 @@
+require 'spec_helper'
+
+describe Gitlab::Ci::Pipeline::Chain::Command do
+  set(:project) { create(:project, :repository) }
+
+  describe '#initialize' do
+    subject do
+      described_class.new(origin_ref: 'master')
+    end
+
+    it 'properly initialises object from hash' do
+      expect(subject.origin_ref).to eq('master')
+    end
+  end
+
+  context 'handling of origin_ref' do
+    let(:command) { described_class.new(project: project, origin_ref: origin_ref) }
+
+    describe '#branch_exists?' do
+      subject { command.branch_exists? }
+
+      context 'for existing branch' do
+        let(:origin_ref) { 'master' }
+
+        it { is_expected.to eq(true) }
+      end
+
+      context 'for invalid branch' do
+        let(:origin_ref) { 'something' }
+
+        it { is_expected.to eq(false) }
+      end
+    end
+
+    describe '#tag_exists?' do
+      subject { command.tag_exists? }
+
+      context 'for existing ref' do
+        let(:origin_ref) { 'v1.0.0' }
+
+        it { is_expected.to eq(true) }
+      end
+
+      context 'for invalid ref' do
+        let(:origin_ref) { 'something' }
+
+        it { is_expected.to eq(false) }
+      end
+    end
+
+    describe '#ref' do
+      subject { command.ref }
+
+      context 'for regular ref' do
+        let(:origin_ref) { 'master' }
+
+        it { is_expected.to eq('master') }
+      end
+
+      context 'for branch ref' do
+        let(:origin_ref) { 'refs/heads/master' }
+
+        it { is_expected.to eq('master') }
+      end
+
+      context 'for tag ref' do
+        let(:origin_ref) { 'refs/tags/1.0.0' }
+
+        it { is_expected.to eq('1.0.0') }
+      end
+
+      context 'for other refs' do
+        let(:origin_ref) { 'refs/merge-requests/11/head' }
+
+        it { is_expected.to eq('refs/merge-requests/11/head') }
+      end
+    end
+  end
+
+  describe '#sha' do
+    subject { command.sha }
+
+    context 'when invalid checkout_sha is specified' do
+      let(:command) { described_class.new(project: project, checkout_sha: 'aaa') }
+
+      it 'returns empty value' do
+        is_expected.to be_nil
+      end
+    end
+
+    context 'when a valid checkout_sha is specified' do
+      let(:command) { described_class.new(project: project, checkout_sha: project.commit.id) }
+
+      it 'returns checkout_sha' do
+        is_expected.to eq(project.commit.id)
+      end
+    end
+
+    context 'when a valid after_sha is specified' do
+      let(:command) { described_class.new(project: project, after_sha: project.commit.id) }
+
+      it 'returns after_sha' do
+        is_expected.to eq(project.commit.id)
+      end
+    end
+
+    context 'when a valid origin_ref is specified' do
+      let(:command) { described_class.new(project: project, origin_ref: 'HEAD') }
+
+      it 'returns SHA for given ref' do
+        is_expected.to eq(project.commit.id)
+      end
+    end
+  end
+
+  describe '#origin_sha' do
+    subject { command.origin_sha }
+
+    context 'when using checkout_sha and after_sha' do
+      let(:command) { described_class.new(project: project, checkout_sha: 'aaa', after_sha: 'bbb') }
+
+      it 'uses checkout_sha' do
+        is_expected.to eq('aaa')
+      end
+    end
+
+    context 'when using after_sha only' do
+      let(:command) { described_class.new(project: project, after_sha: 'bbb') }
+
+      it 'uses after_sha' do
+        is_expected.to eq('bbb')
+      end
+    end
+  end
+
+  describe '#before_sha' do
+    subject { command.before_sha }
+
+    context 'when using checkout_sha and before_sha' do
+      let(:command) { described_class.new(project: project, checkout_sha: 'aaa', before_sha: 'bbb') }
+
+      it 'uses before_sha' do
+        is_expected.to eq('bbb')
+      end
+    end
+
+    context 'when using checkout_sha only' do
+      let(:command) { described_class.new(project: project, checkout_sha: 'aaa') }
+
+      it 'uses checkout_sha' do
+        is_expected.to eq('aaa')
+      end
+    end
+
+    context 'when checkout_sha and before_sha are empty' do
+      let(:command) { described_class.new(project: project) }
+
+      it 'uses BLANK_SHA' do
+        is_expected.to eq(Gitlab::Git::BLANK_SHA)
+      end
+    end
+  end
+
+  describe '#protected_ref?' do
+    let(:command) { described_class.new(project: project, origin_ref: 'my-branch') }
+
+    subject { command.protected_ref? }
+
+    context 'when a ref is protected' do
+      before do
+        expect_any_instance_of(Project).to receive(:protected_for?).with('my-branch').and_return(true)
+      end
+
+      it { is_expected.to eq(true) }
+    end
+
+    context 'when a ref is unprotected' do
+      before do
+        expect_any_instance_of(Project).to receive(:protected_for?).with('my-branch').and_return(false)
+      end
+
+      it { is_expected.to eq(false) }
+    end
+  end
+end
diff --git a/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb
index f54e2326b06..1b03227d67b 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb
@@ -10,9 +10,9 @@ describe Gitlab::Ci::Pipeline::Chain::Create do
   end
 
   let(:command) do
-    double('command', project: project,
-                      current_user: user,
-                      seeds_block: nil)
+    Gitlab::Ci::Pipeline::Chain::Command.new(
+      project: project,
+      current_user: user, seeds_block: nil)
   end
 
   let(:step) { described_class.new(pipeline, command) }
diff --git a/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb
index e165e0fac2a..eca23694a2b 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb
@@ -5,7 +5,7 @@ describe Gitlab::Ci::Pipeline::Chain::Sequence do
   set(:user) { create(:user) }
 
   let(:pipeline) { build_stubbed(:ci_pipeline) }
-  let(:command) { double('command' ) }
+  let(:command) { Gitlab::Ci::Pipeline::Chain::Command.new }
   let(:first_step) { spy('first step') }
   let(:second_step) { spy('second step') }
   let(:sequence) { [first_step, second_step] }
diff --git a/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb
index 32bd5de829b..dc13cae961c 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb
@@ -6,10 +6,11 @@ describe Gitlab::Ci::Pipeline::Chain::Skip do
   set(:pipeline) { create(:ci_pipeline, project: project) }
 
   let(:command) do
-    double('command', project: project,
-                      current_user: user,
-                      ignore_skip_ci: false,
-                      save_incompleted: true)
+    Gitlab::Ci::Pipeline::Chain::Command.new(
+      project: project,
+      current_user: user,
+      ignore_skip_ci: false,
+      save_incompleted: true)
   end
 
   let(:step) { described_class.new(pipeline, command) }
diff --git a/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb
index 0bbdd23f4d6..a973ccda8de 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb
@@ -5,11 +5,12 @@ describe Gitlab::Ci::Pipeline::Chain::Validate::Abilities do
   set(:user) { create(:user) }
 
   let(:pipeline) do
-    build_stubbed(:ci_pipeline, ref: ref, project: project)
+    build_stubbed(:ci_pipeline, project: project)
   end
 
   let(:command) do
-    double('command', project: project, current_user: user)
+    Gitlab::Ci::Pipeline::Chain::Command.new(
+      project: project, current_user: user, origin_ref: ref)
   end
 
   let(:step) { described_class.new(pipeline, command) }
diff --git a/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb
index 8357af38f92..5c12c6e6392 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb
@@ -5,9 +5,10 @@ describe Gitlab::Ci::Pipeline::Chain::Validate::Config do
   set(:user) { create(:user) }
 
   let(:command) do
-    double('command', project: project,
-                      current_user: user,
-                      save_incompleted: true)
+    Gitlab::Ci::Pipeline::Chain::Command.new(
+      project: project,
+      current_user: user,
+      save_incompleted: true)
   end
 
   let!(:step) { described_class.new(pipeline, command) }
diff --git a/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb
index bb356efe9ad..fb1b53fc55c 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb
@@ -3,10 +3,7 @@ require 'spec_helper'
 describe Gitlab::Ci::Pipeline::Chain::Validate::Repository do
   set(:project) { create(:project, :repository) }
   set(:user) { create(:user) }
-
-  let(:command) do
-    double('command', project: project, current_user: user)
-  end
+  let(:pipeline) { build_stubbed(:ci_pipeline) }
 
   let!(:step) { described_class.new(pipeline, command) }
 
@@ -14,9 +11,10 @@ describe Gitlab::Ci::Pipeline::Chain::Validate::Repository do
     step.perform!
   end
 
-  context 'when pipeline ref and sha exists' do
-    let(:pipeline) do
-      build_stubbed(:ci_pipeline, ref: 'master', sha: '123', project: project)
+  context 'when ref and sha exists' do
+    let(:command) do
+      Gitlab::Ci::Pipeline::Chain::Command.new(
+        project: project, current_user: user, origin_ref: 'master', checkout_sha: project.commit.id)
     end
 
     it 'does not break the chain' do
@@ -28,9 +26,10 @@ describe Gitlab::Ci::Pipeline::Chain::Validate::Repository do
     end
   end
 
-  context 'when pipeline ref does not exist' do
-    let(:pipeline) do
-      build_stubbed(:ci_pipeline, ref: 'something', project: project)
+  context 'when ref does not exist' do
+    let(:command) do
+      Gitlab::Ci::Pipeline::Chain::Command.new(
+        project: project, current_user: user, origin_ref: 'something')
     end
 
     it 'breaks the chain' do
@@ -43,9 +42,10 @@ describe Gitlab::Ci::Pipeline::Chain::Validate::Repository do
     end
   end
 
-  context 'when pipeline does not have SHA set' do
-    let(:pipeline) do
-      build_stubbed(:ci_pipeline, ref: 'master', sha: nil, project: project)
+  context 'when does not have existing SHA set' do
+    let(:command) do
+      Gitlab::Ci::Pipeline::Chain::Command.new(
+        project: project, current_user: user, origin_ref: 'master', checkout_sha: 'something')
     end
 
     it 'breaks the chain' do
diff --git a/spec/lib/gitlab/diff/inline_diff_spec.rb b/spec/lib/gitlab/diff/inline_diff_spec.rb
index 15451c2cf99..0a41362f606 100644
--- a/spec/lib/gitlab/diff/inline_diff_spec.rb
+++ b/spec/lib/gitlab/diff/inline_diff_spec.rb
@@ -31,6 +31,10 @@ describe Gitlab::Diff::InlineDiff do
       expect(subject[7]).to eq([17..17])
       expect(subject[8]).to be_nil
     end
+
+    it 'can handle unchanged empty lines' do
+      expect { described_class.for_lines(['- bar', '+ baz', '']) }.not_to raise_error
+    end
   end
 
   describe "#inline_diffs" do
diff --git a/spec/lib/gitlab/email/handler/create_merge_request_handler_spec.rb b/spec/lib/gitlab/email/handler/create_merge_request_handler_spec.rb
index e361d1a7393..51ce3116880 100644
--- a/spec/lib/gitlab/email/handler/create_merge_request_handler_spec.rb
+++ b/spec/lib/gitlab/email/handler/create_merge_request_handler_spec.rb
@@ -10,14 +10,14 @@ describe Gitlab::Email::Handler::CreateMergeRequestHandler do
     stub_config_setting(host: 'localhost')
   end
 
+  after do
+    TestEnv.clean_test_path
+  end
+
   let(:email_raw) { fixture_file('emails/valid_new_merge_request.eml') }
   let(:namespace) { create(:namespace, path: 'gitlabhq') }
 
-  # project's git repository is not deleted when project is deleted
-  # between tests. Then tests fail because re-creation of the project with
-  # the same name fails on existing git repository -> skip_disk_validation
-  # ignores repository existence on disk
-  let!(:project)  { create(:project, :public, :repository, skip_disk_validation: true, namespace: namespace, path: 'gitlabhq') }
+  let!(:project)  { create(:project, :public, :repository, namespace: namespace, path: 'gitlabhq') }
   let!(:user) do
     create(
       :user,
diff --git a/spec/lib/gitlab/git/remote_repository_spec.rb b/spec/lib/gitlab/git/remote_repository_spec.rb
index 0506210887c..eb148cc3804 100644
--- a/spec/lib/gitlab/git/remote_repository_spec.rb
+++ b/spec/lib/gitlab/git/remote_repository_spec.rb
@@ -4,7 +4,7 @@ describe Gitlab::Git::RemoteRepository, seed_helper: true do
   let(:repository) { Gitlab::Git::Repository.new('default', TEST_REPO_PATH, '') }
   subject { described_class.new(repository) }
 
-  describe '#empty_repo?' do
+  describe '#empty?' do
     using RSpec::Parameterized::TableSyntax
 
     where(:repository, :result) do
@@ -13,7 +13,7 @@ describe Gitlab::Git::RemoteRepository, seed_helper: true do
     end
 
     with_them do
-      it { expect(subject.empty_repo?).to eq(result) }
+      it { expect(subject.empty?).to eq(result) }
     end
   end
 
diff --git a/spec/lib/gitlab/git/repository_spec.rb b/spec/lib/gitlab/git/repository_spec.rb
index 08dd6ea80ff..f19b65a5f71 100644
--- a/spec/lib/gitlab/git/repository_spec.rb
+++ b/spec/lib/gitlab/git/repository_spec.rb
@@ -257,7 +257,7 @@ describe Gitlab::Git::Repository, seed_helper: true do
   end
 
   describe '#empty?' do
-    it { expect(repository.empty?).to be_falsey }
+    it { expect(repository).not_to be_empty }
   end
 
   describe '#ref_names' do
diff --git a/spec/lib/gitlab/git/storage/checker_spec.rb b/spec/lib/gitlab/git/storage/checker_spec.rb
new file mode 100644
index 00000000000..d74c3bcb04c
--- /dev/null
+++ b/spec/lib/gitlab/git/storage/checker_spec.rb
@@ -0,0 +1,132 @@
+require 'spec_helper'
+
+describe Gitlab::Git::Storage::Checker, :clean_gitlab_redis_shared_state do
+  let(:storage_name) { 'default' }
+  let(:hostname) { Gitlab::Environment.hostname }
+  let(:cache_key) { "storage_accessible:#{storage_name}:#{hostname}" }
+
+  subject(:checker) { described_class.new(storage_name) }
+
+  def value_from_redis(name)
+    Gitlab::Git::Storage.redis.with do |redis|
+      redis.hmget(cache_key, name)
+    end.first
+  end
+
+  def set_in_redis(name, value)
+    Gitlab::Git::Storage.redis.with do |redis|
+      redis.hmset(cache_key, name, value)
+    end.first
+  end
+
+  describe '.check_all' do
+    it 'calls a check for each storage' do
+      fake_checker_default = double
+      fake_checker_broken = double
+      fake_logger = fake_logger
+
+      expect(described_class).to receive(:new).with('default', fake_logger) { fake_checker_default }
+      expect(described_class).to receive(:new).with('broken', fake_logger) { fake_checker_broken }
+      expect(fake_checker_default).to receive(:check_with_lease)
+      expect(fake_checker_broken).to receive(:check_with_lease)
+
+      described_class.check_all(fake_logger)
+    end
+
+    context 'with broken storage', :broken_storage do
+      it 'returns the results' do
+        expected_result = [
+          { storage: 'default', success: true },
+          { storage: 'broken', success: false }
+        ]
+
+        expect(described_class.check_all).to eq(expected_result)
+      end
+    end
+  end
+
+  describe '#initialize' do
+    it 'assigns the settings' do
+      expect(checker.hostname).to eq(hostname)
+      expect(checker.storage).to eq('default')
+      expect(checker.storage_path).to eq(TestEnv.repos_path)
+    end
+  end
+
+  describe '#check_with_lease' do
+    it 'only allows one check at a time' do
+      expect(checker).to receive(:check).once { sleep 1 }
+
+      thread = Thread.new { checker.check_with_lease }
+      checker.check_with_lease
+      thread.join
+    end
+
+    it 'returns a result hash' do
+      expect(checker.check_with_lease).to eq(storage: 'default', success: true)
+    end
+  end
+
+  describe '#check' do
+    it 'tracks that the storage was accessible' do
+      set_in_redis(:failure_count, 10)
+      set_in_redis(:last_failure, Time.now.to_f)
+
+      checker.check
+
+      expect(value_from_redis(:failure_count).to_i).to eq(0)
+      expect(value_from_redis(:last_failure)).to be_empty
+      expect(value_from_redis(:first_failure)).to be_empty
+    end
+
+    it 'calls the check with the correct arguments' do
+      stub_application_setting(circuitbreaker_storage_timeout: 30,
+                               circuitbreaker_access_retries: 3)
+
+      expect(Gitlab::Git::Storage::ForkedStorageCheck)
+        .to receive(:storage_available?).with(TestEnv.repos_path, 30, 3)
+              .and_call_original
+
+      checker.check
+    end
+
+    it 'returns `true`' do
+      expect(checker.check).to eq(true)
+    end
+
+    it 'maintains known storage keys' do
+      Timecop.freeze do
+        # Insert an old key to expire
+        old_entry = Time.now.to_i - 3.days.to_i
+        Gitlab::Git::Storage.redis.with do |redis|
+          redis.zadd(Gitlab::Git::Storage::REDIS_KNOWN_KEYS, old_entry, 'to_be_removed')
+        end
+
+        checker.check
+
+        known_keys = Gitlab::Git::Storage.redis.with do |redis|
+          redis.zrange(Gitlab::Git::Storage::REDIS_KNOWN_KEYS, 0, -1)
+        end
+
+        expect(known_keys).to contain_exactly(cache_key)
+      end
+    end
+
+    context 'the storage is not available', :broken_storage do
+      let(:storage_name) { 'broken' }
+
+      it 'tracks that the storage was inaccessible' do
+        Timecop.freeze do
+          expect { checker.check }.to change { value_from_redis(:failure_count).to_i }.by(1)
+
+          expect(value_from_redis(:last_failure)).not_to be_empty
+          expect(value_from_redis(:first_failure)).not_to be_empty
+        end
+      end
+
+      it 'returns `false`' do
+        expect(checker.check).to eq(false)
+      end
+    end
+  end
+end
diff --git a/spec/lib/gitlab/git/storage/circuit_breaker_spec.rb b/spec/lib/gitlab/git/storage/circuit_breaker_spec.rb
index f34c9f09057..210b90bfba9 100644
--- a/spec/lib/gitlab/git/storage/circuit_breaker_spec.rb
+++ b/spec/lib/gitlab/git/storage/circuit_breaker_spec.rb
@@ -1,11 +1,18 @@
 require 'spec_helper'
 
-describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state: true, broken_storage: true do
+describe Gitlab::Git::Storage::CircuitBreaker, :broken_storage do
   let(:storage_name) { 'default' }
   let(:circuit_breaker) { described_class.new(storage_name, hostname) }
   let(:hostname) { Gitlab::Environment.hostname }
   let(:cache_key) { "storage_accessible:#{storage_name}:#{hostname}" }
 
+  def set_in_redis(name, value)
+    Gitlab::Git::Storage.redis.with do |redis|
+      redis.zadd(Gitlab::Git::Storage::REDIS_KNOWN_KEYS, 0, cache_key)
+      redis.hmset(cache_key, name, value)
+    end.first
+  end
+
   before do
     # Override test-settings for the circuitbreaker with something more realistic
     # for these specs.
@@ -19,36 +26,7 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
                          )
   end
 
-  def value_from_redis(name)
-    Gitlab::Git::Storage.redis.with do |redis|
-      redis.hmget(cache_key, name)
-    end.first
-  end
-
-  def set_in_redis(name, value)
-    Gitlab::Git::Storage.redis.with do |redis|
-      redis.zadd(Gitlab::Git::Storage::REDIS_KNOWN_KEYS, 0, cache_key)
-      redis.hmset(cache_key, name, value)
-    end.first
-  end
-
-  describe '.reset_all!' do
-    it 'clears all entries form redis' do
-      set_in_redis(:failure_count, 10)
-
-      described_class.reset_all!
-
-      key_exists = Gitlab::Git::Storage.redis.with { |redis| redis.exists(cache_key) }
-
-      expect(key_exists).to be_falsey
-    end
-
-    it 'does not break when there are no keys in redis' do
-      expect { described_class.reset_all! }.not_to raise_error
-    end
-  end
-
-  describe '.for_storage' do
+  describe '.for_storage', :request_store do
     it 'only builds a single circuitbreaker per storage' do
       expect(described_class).to receive(:new).once.and_call_original
 
@@ -71,7 +49,6 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
     it 'assigns the settings' do
       expect(circuit_breaker.hostname).to eq(hostname)
       expect(circuit_breaker.storage).to eq('default')
-      expect(circuit_breaker.storage_path).to eq(TestEnv.repos_path)
     end
   end
 
@@ -91,9 +68,9 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
       end
     end
 
-    describe '#failure_wait_time' do
+    describe '#check_interval' do
       it 'reads the value from settings' do
-        expect(circuit_breaker.failure_wait_time).to eq(1)
+        expect(circuit_breaker.check_interval).to eq(1)
       end
     end
 
@@ -114,12 +91,6 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
         expect(circuit_breaker.access_retries).to eq(4)
       end
     end
-
-    describe '#backoff_threshold' do
-      it 'reads the value from settings' do
-        expect(circuit_breaker.backoff_threshold).to eq(5)
-      end
-    end
   end
 
   describe '#perform' do
@@ -134,19 +105,6 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
       end
     end
 
-    it 'raises the correct exception when backing off' do
-      Timecop.freeze do
-        set_in_redis(:last_failure, 1.second.ago.to_f)
-        set_in_redis(:failure_count, 90)
-
-        expect { |b| circuit_breaker.perform(&b) }
-          .to raise_error do |exception|
-          expect(exception).to be_kind_of(Gitlab::Git::Storage::Failing)
-          expect(exception.retry_after).to eq(30)
-        end
-      end
-    end
-
     it 'yields the block' do
       expect { |b| circuit_breaker.perform(&b) }
         .to yield_control
@@ -170,54 +128,6 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
         .to raise_error(Rugged::OSError)
     end
 
-    it 'tracks that the storage was accessible' do
-      set_in_redis(:failure_count, 10)
-      set_in_redis(:last_failure, Time.now.to_f)
-
-      circuit_breaker.perform { '' }
-
-      expect(value_from_redis(:failure_count).to_i).to eq(0)
-      expect(value_from_redis(:last_failure)).to be_empty
-      expect(circuit_breaker.failure_count).to eq(0)
-      expect(circuit_breaker.last_failure).to be_nil
-    end
-
-    it 'maintains known storage keys' do
-      Timecop.freeze do
-        # Insert an old key to expire
-        old_entry = Time.now.to_i - 3.days.to_i
-        Gitlab::Git::Storage.redis.with do |redis|
-          redis.zadd(Gitlab::Git::Storage::REDIS_KNOWN_KEYS, old_entry, 'to_be_removed')
-        end
-
-        circuit_breaker.perform { '' }
-
-        known_keys = Gitlab::Git::Storage.redis.with do |redis|
-          redis.zrange(Gitlab::Git::Storage::REDIS_KNOWN_KEYS, 0, -1)
-        end
-
-        expect(known_keys).to contain_exactly(cache_key)
-      end
-    end
-
-    it 'only performs the accessibility check once' do
-      expect(Gitlab::Git::Storage::ForkedStorageCheck)
-        .to receive(:storage_available?).once.and_call_original
-
-      2.times { circuit_breaker.perform { '' } }
-    end
-
-    it 'calls the check with the correct arguments' do
-      stub_application_setting(circuitbreaker_storage_timeout: 30,
-                               circuitbreaker_access_retries: 3)
-
-      expect(Gitlab::Git::Storage::ForkedStorageCheck)
-        .to receive(:storage_available?).with(TestEnv.repos_path, 30, 3)
-              .and_call_original
-
-      circuit_breaker.perform { '' }
-    end
-
     context 'with the feature disabled' do
       before do
         stub_feature_flags(git_storage_circuit_breaker: false)
@@ -240,31 +150,6 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
         expect(result).to eq('hello')
       end
     end
-
-    context 'the storage is not available' do
-      let(:storage_name) { 'broken' }
-
-      it 'raises the correct exception' do
-        expect(circuit_breaker).to receive(:track_storage_inaccessible)
-
-        expect { circuit_breaker.perform { '' } }
-          .to raise_error do |exception|
-          expect(exception).to be_kind_of(Gitlab::Git::Storage::Inaccessible)
-          expect(exception.retry_after).to eq(30)
-        end
-      end
-
-      it 'tracks that the storage was inaccessible' do
-        Timecop.freeze do
-          expect { circuit_breaker.perform { '' } }.to raise_error(Gitlab::Git::Storage::Inaccessible)
-
-          expect(value_from_redis(:failure_count).to_i).to eq(1)
-          expect(value_from_redis(:last_failure)).not_to be_empty
-          expect(circuit_breaker.failure_count).to eq(1)
-          expect(circuit_breaker.last_failure).to be_within(1.second).of(Time.now)
-        end
-      end
-    end
   end
 
   describe '#circuit_broken?' do
@@ -283,32 +168,6 @@ describe Gitlab::Git::Storage::CircuitBreaker, clean_gitlab_redis_shared_state:
     end
   end
 
-  describe '#backing_off?' do
-    it 'is true when there was a recent failure' do
-      Timecop.freeze do
-        set_in_redis(:last_failure, 1.second.ago.to_f)
-        set_in_redis(:failure_count, 90)
-
-        expect(circuit_breaker.backing_off?).to be_truthy
-      end
-    end
-
-    context 'the `failure_wait_time` is set to 0' do
-      before do
-        stub_application_setting(circuitbreaker_failure_wait_time: 0)
-      end
-
-      it 'is working even when there are failures' do
-        Timecop.freeze do
-          set_in_redis(:last_failure, 0.seconds.ago.to_f)
-          set_in_redis(:failure_count, 90)
-
-          expect(circuit_breaker.backing_off?).to be_falsey
-        end
-      end
-    end
-  end
-
   describe '#last_failure' do
     it 'returns the last failure time' do
       time = Time.parse("2017-05-26 17:52:30")
diff --git a/spec/lib/gitlab/git/storage/failure_info_spec.rb b/spec/lib/gitlab/git/storage/failure_info_spec.rb
new file mode 100644
index 00000000000..bae88fdda86
--- /dev/null
+++ b/spec/lib/gitlab/git/storage/failure_info_spec.rb
@@ -0,0 +1,70 @@
+require 'spec_helper'
+
+describe Gitlab::Git::Storage::FailureInfo, :broken_storage do
+  let(:storage_name) { 'default' }
+  let(:hostname) { Gitlab::Environment.hostname }
+  let(:cache_key) { "storage_accessible:#{storage_name}:#{hostname}" }
+
+  def value_from_redis(name)
+    Gitlab::Git::Storage.redis.with do |redis|
+      redis.hmget(cache_key, name)
+    end.first
+  end
+
+  def set_in_redis(name, value)
+    Gitlab::Git::Storage.redis.with do |redis|
+      redis.zadd(Gitlab::Git::Storage::REDIS_KNOWN_KEYS, 0, cache_key)
+      redis.hmset(cache_key, name, value)
+    end.first
+  end
+
+  describe '.reset_all!' do
+    it 'clears all entries form redis' do
+      set_in_redis(:failure_count, 10)
+
+      described_class.reset_all!
+
+      key_exists = Gitlab::Git::Storage.redis.with { |redis| redis.exists(cache_key) }
+
+      expect(key_exists).to be_falsey
+    end
+
+    it 'does not break when there are no keys in redis' do
+      expect { described_class.reset_all! }.not_to raise_error
+    end
+  end
+
+  describe '.load' do
+    it 'loads failure information for a storage on a host' do
+      first_failure = Time.parse("2017-11-14 17:52:30")
+      last_failure = Time.parse("2017-11-14 18:54:37")
+      failure_count = 11
+
+      set_in_redis(:first_failure, first_failure.to_i)
+      set_in_redis(:last_failure, last_failure.to_i)
+      set_in_redis(:failure_count, failure_count.to_i)
+
+      info = described_class.load(cache_key)
+
+      expect(info.first_failure).to eq(first_failure)
+      expect(info.last_failure).to eq(last_failure)
+      expect(info.failure_count).to eq(failure_count)
+    end
+  end
+
+  describe '#no_failures?' do
+    it 'is true when there are no failures' do
+      info = described_class.new(nil, nil, 0)
+
+      expect(info.no_failures?).to be_truthy
+    end
+
+    it 'is false when there are failures' do
+      info = described_class.new(Time.parse("2017-11-14 17:52:30"),
+                                 Time.parse("2017-11-14 18:54:37"),
+                                 20)
+
+      expect(info.no_failures?).to be_falsy
+    end
+  end
+end
diff --git a/spec/lib/gitlab/git/storage/health_spec.rb b/spec/lib/gitlab/git/storage/health_spec.rb
index d7a52a04fbb..bb670fc5d94 100644
--- a/spec/lib/gitlab/git/storage/health_spec.rb
+++ b/spec/lib/gitlab/git/storage/health_spec.rb
@@ -1,6 +1,6 @@
 require 'spec_helper'
 
-describe Gitlab::Git::Storage::Health, clean_gitlab_redis_shared_state: true, broken_storage: true do
+describe Gitlab::Git::Storage::Health, broken_storage: true do
   let(:host1_key) { 'storage_accessible:broken:web01' }
   let(:host2_key) { 'storage_accessible:default:kiq01' }
 
diff --git a/spec/lib/gitlab/git/storage/null_circuit_breaker_spec.rb b/spec/lib/gitlab/git/storage/null_circuit_breaker_spec.rb
index 5db37f55e03..93ad20011de 100644
--- a/spec/lib/gitlab/git/storage/null_circuit_breaker_spec.rb
+++ b/spec/lib/gitlab/git/storage/null_circuit_breaker_spec.rb
@@ -27,7 +27,7 @@ describe Gitlab::Git::Storage::NullCircuitBreaker do
     end
 
     describe '#failure_info' do
-      it { Timecop.freeze { expect(breaker.failure_info).to eq(Gitlab::Git::Storage::CircuitBreaker::FailureInfo.new(Time.now, breaker.failure_count_threshold)) } }
+      it { expect(breaker.failure_info.no_failures?).to be_falsy }
     end
   end
 
@@ -49,7 +49,7 @@ describe Gitlab::Git::Storage::NullCircuitBreaker do
     end
 
     describe '#failure_info' do
-      it { expect(breaker.failure_info).to eq(Gitlab::Git::Storage::CircuitBreaker::FailureInfo.new(nil, 0)) }
+      it { expect(breaker.failure_info.no_failures?).to be_truthy }
     end
   end
 
diff --git a/spec/lib/gitlab/git_access_spec.rb b/spec/lib/gitlab/git_access_spec.rb
index c9643c5da47..2db560c2cec 100644
--- a/spec/lib/gitlab/git_access_spec.rb
+++ b/spec/lib/gitlab/git_access_spec.rb
@@ -193,7 +193,15 @@ describe Gitlab::GitAccess do
     let(:actor) { build(:rsa_deploy_key_2048, user: user) }
   end
 
-  describe '#check_project_moved!' do
+  shared_examples 'check_project_moved' do
+    it 'enqueues a redirected message' do
+      push_access_check
+
+      expect(Gitlab::Checks::ProjectMoved.fetch_redirect_message(user.id, project.id)).not_to be_nil
+    end
+  end
+
+  describe '#check_project_moved!', :clean_gitlab_redis_shared_state do
     before do
       project.add_master(user)
     end
@@ -207,7 +215,40 @@ describe Gitlab::GitAccess do
       end
     end
 
-    context 'when a redirect was followed to find the project' do
+    context 'when a permanent redirect and ssh protocol' do
+      let(:redirected_path) { 'some/other-path' }
+
+      before do
+        allow_any_instance_of(Gitlab::Checks::ProjectMoved).to receive(:permanent_redirect?).and_return(true)
+      end
+
+      it 'allows push and pull access' do
+        aggregate_failures do
+          expect { push_access_check }.not_to raise_error
+        end
+      end
+
+      it_behaves_like 'check_project_moved'
+    end
+
+    context 'with a permanent redirect and http protocol' do
+      let(:redirected_path) { 'some/other-path' }
+      let(:protocol) { 'http' }
+
+      before do
+        allow_any_instance_of(Gitlab::Checks::ProjectMoved).to receive(:permanent_redirect?).and_return(true)
+      end
+
+      it 'allows_push and pull access' do
+        aggregate_failures do
+          expect { push_access_check }.not_to raise_error
+        end
+      end
+
+      it_behaves_like 'check_project_moved'
+    end
+
+    context 'with a temporal redirect and ssh protocol' do
       let(:redirected_path) { 'some/other-path' }
 
       it 'blocks push and pull access' do
@@ -219,16 +260,15 @@ describe Gitlab::GitAccess do
           expect { pull_access_check }.to raise_error(described_class::ProjectMovedError, /git remote set-url origin #{project.ssh_url_to_repo}/)
         end
       end
+    end
 
-      context 'http protocol' do
-        let(:protocol) { 'http' }
+    context 'with a temporal redirect and http protocol' do
+      let(:redirected_path) { 'some/other-path' }
+      let(:protocol) { 'http' }
 
-        it 'includes the path to the project using HTTP' do
-          aggregate_failures do
-            expect { push_access_check }.to raise_error(described_class::ProjectMovedError, /git remote set-url origin #{project.http_url_to_repo}/)
-            expect { pull_access_check }.to raise_error(described_class::ProjectMovedError, /git remote set-url origin #{project.http_url_to_repo}/)
-          end
-        end
+      it 'does not allow to push and pull access' do
+        expect { push_access_check }.to raise_error(described_class::ProjectMovedError, /git remote set-url origin #{project.http_url_to_repo}/)
+        expect { pull_access_check }.to raise_error(described_class::ProjectMovedError, /git remote set-url origin #{project.http_url_to_repo}/)
       end
     end
   end
diff --git a/spec/lib/gitlab/git_spec.rb b/spec/lib/gitlab/git_spec.rb
index 494dfe0e595..ce15057dd7d 100644
--- a/spec/lib/gitlab/git_spec.rb
+++ b/spec/lib/gitlab/git_spec.rb
@@ -38,4 +38,29 @@ describe Gitlab::Git do
       expect(described_class.ref_name(utf8_invalid_ref)).to eq("an_invalid_ref_å")
     end
   end
+
+  describe '.shas_eql?' do
+    using RSpec::Parameterized::TableSyntax
+
+    where(:sha1, :sha2, :result) do
+      sha           = RepoHelpers.sample_commit.id
+      short_sha     = sha[0, Gitlab::Git::Commit::MIN_SHA_LENGTH]
+      too_short_sha = sha[0, Gitlab::Git::Commit::MIN_SHA_LENGTH - 1]
+
+      [
+        [sha, sha,           true],
+        [sha, short_sha,     true],
+        [sha, sha.reverse,   false],
+        [sha, too_short_sha, false],
+        [sha, nil,           false]
+      ]
+    end
+
+    with_them do
+      it { expect(described_class.shas_eql?(sha1, sha2)).to eq(result) }
+      it 'is commutative' do
+        expect(described_class.shas_eql?(sha2, sha1)).to eq(result)
+      end
+    end
+  end
 end
diff --git a/spec/lib/gitlab/identifier_spec.rb b/spec/lib/gitlab/identifier_spec.rb
index cfaeb1f0d4f..0385dd762c2 100644
--- a/spec/lib/gitlab/identifier_spec.rb
+++ b/spec/lib/gitlab/identifier_spec.rb
@@ -70,6 +70,10 @@ describe Gitlab::Identifier do
         expect(identifier.identify_using_commit(project, '123')).to eq(user)
       end
     end
+
+    it 'returns nil if the project & ref are not present' do
+      expect(identifier.identify_using_commit(nil, nil)).to be_nil
+    end
   end
 
   describe '#identify_using_user' do
diff --git a/spec/lib/gitlab/reference_extractor_spec.rb b/spec/lib/gitlab/reference_extractor_spec.rb
index ef874368077..8ec3f55e6de 100644
--- a/spec/lib/gitlab/reference_extractor_spec.rb
+++ b/spec/lib/gitlab/reference_extractor_spec.rb
@@ -115,6 +115,15 @@ describe Gitlab::ReferenceExtractor do
     end
   end
 
+  it 'does not include anchors from table of contents in issue references' do
+    issue1 = create(:issue, project: project)
+    issue2 = create(:issue, project: project)
+
+    subject.analyze("not real issue <h4>#{issue1.iid}</h4>, real issue #{issue2.to_reference}")
+
+    expect(subject.issues).to match_array([issue2])
+  end
+
   it 'accesses valid issue objects' do
     @i0 = create(:issue, project: project)
     @i1 = create(:issue, project: project)
diff --git a/spec/lib/gitlab/storage_check/cli_spec.rb b/spec/lib/gitlab/storage_check/cli_spec.rb
new file mode 100644
index 00000000000..6db0925899c
--- /dev/null
+++ b/spec/lib/gitlab/storage_check/cli_spec.rb
@@ -0,0 +1,19 @@
+require 'spec_helper'
+
+describe Gitlab::StorageCheck::CLI do
+  let(:options) { Gitlab::StorageCheck::Options.new('unix://tmp/socket.sock', nil, 1, false) }
+  subject(:runner) { described_class.new(options) }
+
+  describe '#update_settings' do
+    it 'updates the interval when changed in a valid response and logs the change' do
+      fake_response = double
+      expect(fake_response).to receive(:valid?).and_return(true)
+      expect(fake_response).to receive(:check_interval).and_return(42)
+      expect(runner.logger).to receive(:info)
+
+      runner.update_settings(fake_response)
+
+      expect(options.interval).to eq(42)
+    end
+  end
+end
diff --git a/spec/lib/gitlab/storage_check/gitlab_caller_spec.rb b/spec/lib/gitlab/storage_check/gitlab_caller_spec.rb
new file mode 100644
index 00000000000..d869022fd31
--- /dev/null
+++ b/spec/lib/gitlab/storage_check/gitlab_caller_spec.rb
@@ -0,0 +1,46 @@
+require 'spec_helper'
+
+describe Gitlab::StorageCheck::GitlabCaller do
+  let(:options) { Gitlab::StorageCheck::Options.new('unix://tmp/socket.sock', nil, nil, false) }
+  subject(:gitlab_caller) { described_class.new(options) }
+
+  describe '#call!' do
+    context 'when a socket is given' do
+      it 'calls a socket' do
+        fake_connection = double
+        expect(fake_connection).to receive(:post)
+        expect(Excon).to receive(:new).with('unix://tmp/socket.sock', socket: "tmp/socket.sock") { fake_connection }
+
+        gitlab_caller.call!
+      end
+    end
+
+    context 'when a host is given' do
+      let(:options) { Gitlab::StorageCheck::Options.new('http://localhost:8080', nil, nil, false) }
+
+      it 'it calls a http response' do
+        fake_connection = double
+        expect(Excon).to receive(:new).with('http://localhost:8080', socket: nil) { fake_connection }
+        expect(fake_connection).to receive(:post)
+
+        gitlab_caller.call!
+      end
+    end
+  end
+
+  describe '#headers' do
+    it 'Adds the JSON header' do
+      headers = gitlab_caller.headers
+
+      expect(headers['Content-Type']).to eq('application/json')
+    end
+
+    context 'when a token was provided' do
+      let(:options) { Gitlab::StorageCheck::Options.new('unix://tmp/socket.sock', 'atoken', nil, false) }
+
+      it 'adds it to the headers' do
+        expect(gitlab_caller.headers['TOKEN']).to eq('atoken')
+      end
+    end
+  end
+end
diff --git a/spec/lib/gitlab/storage_check/option_parser_spec.rb b/spec/lib/gitlab/storage_check/option_parser_spec.rb
new file mode 100644
index 00000000000..cad4dfbefcf
--- /dev/null
+++ b/spec/lib/gitlab/storage_check/option_parser_spec.rb
@@ -0,0 +1,31 @@
+require 'spec_helper'
+
+describe Gitlab::StorageCheck::OptionParser do
+  describe '.parse!' do
+    it 'assigns all options' do
+      args = %w(--target unix://tmp/hello/world.sock --token thetoken --interval 42)
+
+      options = described_class.parse!(args)
+
+      expect(options.token).to eq('thetoken')
+      expect(options.interval).to eq(42)
+      expect(options.target).to eq('unix://tmp/hello/world.sock')
+    end
+
+    it 'requires the interval to be a number' do
+      args = %w(--target unix://tmp/hello/world.sock --interval fortytwo)
+
+      expect { described_class.parse!(args) }.to raise_error(OptionParser::InvalidArgument)
+    end
+
+    it 'raises an error if the scheme is not included' do
+      args = %w(--target tmp/hello/world.sock)
+
+      expect { described_class.parse!(args) }.to raise_error(OptionParser::InvalidArgument)
+    end
+
+    it 'raises an error if both socket and host are missing' do
+      expect { described_class.parse!([]) }.to raise_error(OptionParser::InvalidArgument)
+    end
+  end
+end
diff --git a/spec/lib/gitlab/storage_check/response_spec.rb b/spec/lib/gitlab/storage_check/response_spec.rb
new file mode 100644
index 00000000000..0ff2963e443
--- /dev/null
+++ b/spec/lib/gitlab/storage_check/response_spec.rb
@@ -0,0 +1,54 @@
+require 'spec_helper'
+
+describe Gitlab::StorageCheck::Response do
+  let(:fake_json) do
+    {
+      check_interval: 42,
+      results: [
+        { storage: 'working', success: true },
+        { storage: 'skipped', success: nil },
+        { storage: 'failing', success: false }
+      ]
+    }.to_json
+  end
+
+  let(:fake_http_response) do
+    fake_response = instance_double("Excon::Response - Status check")
+    allow(fake_response).to receive(:status).and_return(200)
+    allow(fake_response).to receive(:body).and_return(fake_json)
+    allow(fake_response).to receive(:headers).and_return('Content-Type' => 'application/json')
+
+    fake_response
+  end
+  let(:response) { described_class.new(fake_http_response) }
+
+  describe '#valid?' do
+    it 'is valid for a success response with parseable JSON' do
+      expect(response).to be_valid
+    end
+  end
+
+  describe '#check_interval' do
+    it 'returns the result from the JSON' do
+      expect(response.check_interval).to eq(42)
+    end
+  end
+
+  describe '#responsive_shards' do
+    it 'contains the names of working shards' do
+      expect(response.responsive_shards).to contain_exactly('working')
+    end
+  end
+
+  describe '#skipped_shards' do
+    it 'contains the names of skipped shards' do
+      expect(response.skipped_shards).to contain_exactly('skipped')
+    end
+  end
+
+  describe '#failing_shards' do
+    it 'contains the name of failing shards' do
+      expect(response.failing_shards).to contain_exactly('failing')
+    end
+  end
+end