Reorganize test jobs by levelreorganize-tests-jobs-by-level

Signed-off-by: Rémy Coutable <remy@rymai.me>

15 files changed, 280 insertions, 41 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c971df3ba5f..cc71ae9245a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,10 +13,8 @@ variables:
   BUILD_ASSETS_IMAGE: "false"
 
 before_script:
-  - bundle --version
   - date
   - source scripts/utils.sh
-  - date
   - source scripts/prepare_build.sh
   - date
 
diff --git a/.gitlab/ci/rails.gitlab-ci.yml b/.gitlab/ci/rails.gitlab-ci.yml
index 29534e40a14..346fa47cbb5 100644
--- a/.gitlab/ci/rails.gitlab-ci.yml
+++ b/.gitlab/ci/rails.gitlab-ci.yml
@@ -6,8 +6,9 @@
 
 .use-pg-10: &use-pg-10
   services:
-    - postgres:10.7
-    - redis:alpine
+    - name: postgres:10.7
+      command: ["postgres", "-c", "fsync=off", "-c", "synchronous_commit=off", "-c", "full_page_writes=off"]
+    - name: redis:alpine
 
 .use-mysql: &use-mysql
   services:
@@ -52,8 +53,10 @@
   script:
     - JOB_NAME=( $CI_JOB_NAME )
     - TEST_TOOL=${JOB_NAME[0]}
-    - export KNAPSACK_REPORT_PATH=knapsack/${CI_PROJECT_NAME}/${TEST_TOOL}_node_${CI_NODE_INDEX}_${CI_NODE_TOTAL}_report.json
-    - export KNAPSACK_GENERATE_REPORT=true
+    - TEST_LEVEL=${JOB_NAME[1]}
+    - DATABASE=${JOB_NAME[2]}
+    - export KNAPSACK_REPORT_PATH=knapsack/${CI_PROJECT_NAME}/${TEST_TOOL}_${TEST_LEVEL}_${DATABASE}_node_${CI_NODE_INDEX}_${CI_NODE_TOTAL}_report.json
+    - export KNAPSACK_GENERATE_REPORT=true KNAPSACK_LOG_LEVEL=debug KNAPSACK_TEST_DIR=spec
     - export SUITE_FLAKY_RSPEC_REPORT_PATH=${FLAKY_RSPEC_SUITE_REPORT_PATH}
     - export FLAKY_RSPEC_REPORT_PATH=rspec_flaky/all_${TEST_TOOL}_${CI_NODE_INDEX}_${CI_NODE_TOTAL}_report.json
     - export NEW_FLAKY_RSPEC_REPORT_PATH=rspec_flaky/new_${TEST_TOOL}_${CI_NODE_INDEX}_${CI_NODE_TOTAL}_report.json
@@ -63,7 +66,10 @@
     - '[[ -f $FLAKY_RSPEC_REPORT_PATH ]] || echo "{}" > ${FLAKY_RSPEC_REPORT_PATH}'
     - '[[ -f $NEW_FLAKY_RSPEC_REPORT_PATH ]] || echo "{}" > ${NEW_FLAKY_RSPEC_REPORT_PATH}'
     - scripts/gitaly-test-spawn
-    - knapsack rspec "--color --format documentation --format RspecJunitFormatter --out junit_rspec.xml"
+    - date
+    - 'export KNAPSACK_TEST_FILE_PATTERN=$(ruby -r./lib/quality/test_level.rb -e "puts Quality::TestLevel.new.pattern(:${TEST_LEVEL})")'
+    - knapsack rspec "--color --format documentation --format RspecJunitFormatter --out junit_rspec.xml --tag level:${TEST_LEVEL} --tag ~geo"
+    - date
   artifacts:
     expire_in: 31d
     when: always
@@ -140,19 +146,47 @@ setup-test-env:
   except:
     - /(^docs[\/-].*|.*-docs$)/
 
-rspec-pg:
+rspec unit pg:
   <<: *rspec-metadata-pg
-  parallel: 50
+  parallel: 20
 
-rspec-pg-10:
+rspec integration pg:
+  <<: *rspec-metadata-pg
+  parallel: 6
+
+rspec system pg:
+  <<: *rspec-metadata-pg
+  parallel: 24
+
+rspec unit pg-10:
   <<: *rspec-metadata-pg-10
   <<: *only-schedules-master
-  parallel: 50
+  parallel: 20
+
+rspec integration pg-10:
+  <<: *rspec-metadata-pg-10
+  <<: *only-schedules-master
+  parallel: 6
+
+rspec system pg-10:
+  <<: *rspec-metadata-pg-10
+  <<: *only-schedules-master
+  parallel: 24
+
+rspec unit mysql:
+  <<: *rspec-metadata-mysql
+  <<: *only-schedules-master
+  parallel: 20
+
+rspec integration mysql:
+  <<: *rspec-metadata-mysql
+  <<: *only-schedules-master
+  parallel: 6
 
-rspec-mysql:
+rspec system mysql:
   <<: *rspec-metadata-mysql
   <<: *only-schedules-master
-  parallel: 50
+  parallel: 24
 
 rspec-fast-spec-helper:
   <<: *rspec-metadata-pg
@@ -164,7 +198,7 @@ rspec-fast-spec-helper:
   script:
     - export CACHE_CLASSES=true
     - scripts/gitaly-test-spawn
-    - bin/rspec --color --format documentation --tag quarantine spec/
+    - bin/rspec --color --format documentation --tag quarantine -- spec/
 
 rspec-pg-quarantine:
   <<: *rspec-metadata-pg
diff --git a/.gitlab/ci/test-metadata.gitlab-ci.yml b/.gitlab/ci/test-metadata.gitlab-ci.yml
index 4b595083ec6..c51f825f831 100644
--- a/.gitlab/ci/test-metadata.gitlab-ci.yml
+++ b/.gitlab/ci/test-metadata.gitlab-ci.yml
@@ -40,12 +40,12 @@ update-tests-metadata:
     policy: push
   script:
     - retry gem install fog-aws mime-types activesupport rspec_profiling postgres-copy --no-document
-    - scripts/merge-reports ${KNAPSACK_RSPEC_SUITE_REPORT_PATH} knapsack/${CI_PROJECT_NAME}/rspec-pg_node_*.json
+    - scripts/merge-reports ${KNAPSACK_RSPEC_SUITE_REPORT_PATH} knapsack/${CI_PROJECT_NAME}/rspec_*_pg_node_*.json
+    - '[[ -z ${TESTS_METADATA_S3_BUCKET} ]] || scripts/sync-reports put $TESTS_METADATA_S3_BUCKET $KNAPSACK_RSPEC_SUITE_REPORT_PATH'
+    - rm -f knapsack/${CI_PROJECT_NAME}/*_node_*.json
     - scripts/merge-reports ${FLAKY_RSPEC_SUITE_REPORT_PATH} rspec_flaky/all_*_*.json
     - FLAKY_RSPEC_GENERATE_REPORT=1 scripts/prune-old-flaky-specs ${FLAKY_RSPEC_SUITE_REPORT_PATH}
-    - '[[ -z ${TESTS_METADATA_S3_BUCKET} ]] || scripts/sync-reports put $TESTS_METADATA_S3_BUCKET $KNAPSACK_RSPEC_SUITE_REPORT_PATH'
     - '[[ -z ${TESTS_METADATA_S3_BUCKET} ]] || scripts/sync-reports put $TESTS_METADATA_S3_BUCKET $FLAKY_RSPEC_SUITE_REPORT_PATH'
-    - rm -f knapsack/${CI_PROJECT_NAME}/*_node_*.json
     - rm -f rspec_flaky/all_*.json rspec_flaky/new_*.json
     - scripts/insert-rspec-profiling-data
   only:
diff --git a/doc/development/rake_tasks.md b/doc/development/rake_tasks.md
index 27fc3231218..f06ffab03c6 100644
--- a/doc/development/rake_tasks.md
+++ b/doc/development/rake_tasks.md
@@ -108,11 +108,13 @@ To make sure that indices still fit. You could find great details in:
 
 In order to run the test you can use the following commands:
 
-- `rake spec` to run the rspec suite
-- `rake karma` to run the karma test suite
-- `rake gitlab:test` to run all the tests
+- `bin/rake spec` to run the rspec suite
+- `bin/rake spec:unit` to run the only the unit tests
+- `bin/rake spec:integration` to run the only the integration tests
+- `bin/rake spec:system` to run the only the system tests
+- `bin/rake karma` to run the karma test suite
 
-Note: `rake spec` takes significant time to pass.
+Note: `bin/rake spec` takes significant time to pass.
 Instead of running full test suite locally you can save a lot of time by running
 a single test or directory related to your changes. After you submit merge request
 CI will run full test suite for you. Green CI status in the merge request means
@@ -121,6 +123,9 @@ full test suite is passed.
 Note: You can't run `rspec .` since this will try to run all the `_spec.rb`
 files it can find, also the ones in `/tmp`
 
+Note: You can pass RSpec command line options to the `spec:unit`,
+`spec:integration`, and `spec:system` tasks, e.g. `bin/rake "spec:unit[--tag ~geo --dry-run]"`.
+
 To run a single test file you can use:
 
 - `bin/rspec spec/controllers/commit_controller_spec.rb` for a rspec test
diff --git a/doc/development/testing_guide/testing_levels.md b/doc/development/testing_guide/testing_levels.md
index 1fa6e38ea5a..b5155b6b7fa 100644
--- a/doc/development/testing_guide/testing_levels.md
+++ b/doc/development/testing_guide/testing_levels.md
@@ -4,12 +4,14 @@
 
 _This diagram demonstrates the relative priority of each test type we use. `e2e` stands for end-to-end._
 
-As of 2019-04-16, we have the following distribution of tests per level:
+As of 2019-05-01, we have the following distribution of tests per level:
 
-- 67 black-box tests at the system level (aka end-to-end or QA tests) in CE, 98 in EE. This represents 0.3% of all the CE tests (0.3% in EE).
-- 5,457 white-box tests at the system level (aka system or feature tests) in CE, 6,585 in EE. This represents 24.6% of all the CE tests (20.3% in EE).
-- 8,298 integration tests in CE, 10,633 in EE: 0.3% of all the CE tests (0.3% in EE). This represents 37.2% of all the CE tests (32.8% in EE).
-- 8,403 unit tests in CE, 15,090 in EE: 0.3% of all the CE tests (0.3% in EE). This represents 37.8% of all the CE tests (46.6% in EE).
+| Test level | Community Edition | Enterprise Edition  | Community + Enterprise Edition |
+| --------- | ---------- | -------------- | ----- |
+| Black-box tests at the system level (aka end-to-end or QA tests) | 68 (0.14%) | 31 (0.2%) | 99 (0.17%) |
+| White-box tests at the system level (aka system or feature tests) | 5,471 (11.9%) | 969 (7.4%) | 6440 (10.9%) |
+| Integration tests | 8,333 (18.2%) | 2,244 (17.2%) | 10,577 (17.9%) |
+| Unit tests | 32,031 (69.7%) | 9,778 (75.1%) | 41,809 (71%) |
 
 ## Unit tests
 
diff --git a/lib/quality/test_level.rb b/lib/quality/test_level.rb
new file mode 100644
index 00000000000..24d8eac200c
--- /dev/null
+++ b/lib/quality/test_level.rb
@@ -0,0 +1,75 @@
+# frozen_string_literal: true
+
+module Quality
+  class TestLevel
+    UnknownTestLevelError = Class.new(StandardError)
+
+    TEST_LEVEL_FOLDERS = {
+      unit: %w[
+        bin
+        config
+        db
+        dependencies
+        factories
+        finders
+        frontend
+        graphql
+        helpers
+        initializers
+        javascripts
+        lib
+        migrations
+        models
+        policies
+        presenters
+        rack_servers
+        routing
+        rubocop
+        serializers
+        services
+        sidekiq
+        tasks
+        uploaders
+        validators
+        views
+        workers
+        elastic_integration
+      ],
+      integration: %w[
+        controllers
+        mailers
+        requests
+      ],
+      system: ['features']
+    }.freeze
+
+    attr_reader :prefix
+
+    def initialize(prefix = nil)
+      @prefix = prefix
+      @patterns = {}
+      @regexps = {}
+    end
+
+    def pattern(level)
+      @patterns[level] ||= "#{prefix}spec/{#{TEST_LEVEL_FOLDERS.fetch(level).join(',')}}{,/**/}*_spec.rb".freeze
+    end
+
+    def regexp(level)
+      @regexps[level] ||= Regexp.new("#{prefix}spec/(#{TEST_LEVEL_FOLDERS.fetch(level).join('|')})").freeze
+    end
+
+    def level_for(file_path)
+      case file_path
+      when regexp(:unit)
+        :unit
+      when regexp(:integration)
+        :integration
+      when regexp(:system)
+        :system
+      else
+        raise UnknownTestLevelError, "Test level for #{file_path} couldn't be set. Please rename the file properly or change the test level detection regexes in #{__FILE__}."
+      end
+    end
+  end
+end
diff --git a/lib/tasks/spec.rake b/lib/tasks/spec.rake
index 2eddcb3c777..c881ad4cf12 100644
--- a/lib/tasks/spec.rake
+++ b/lib/tasks/spec.rake
@@ -1,7 +1,32 @@
+# frozen_string_literal: true
+
+return if Rails.env.production?
+
 Rake::Task["spec"].clear if Rake::Task.task_defined?('spec')
 
 namespace :spec do
-  desc 'GitLab | Rspec | Run request specs'
+  desc 'GitLab | RSpec | Run unit tests'
+  RSpec::Core::RakeTask.new(:unit, :rspec_opts) do |t, args|
+    require_dependency 'quality/test_level'
+    t.pattern = Quality::TestLevel.new.pattern(:unit)
+    t.rspec_opts = args[:rspec_opts]
+  end
+
+  desc 'GitLab | RSpec | Run integration tests'
+  RSpec::Core::RakeTask.new(:integration, :rspec_opts) do |t, args|
+    require_dependency 'quality/test_level'
+    t.pattern = Quality::TestLevel.new.pattern(:integration)
+    t.rspec_opts = args[:rspec_opts]
+  end
+
+  desc 'GitLab | RSpec | Run system tests'
+  RSpec::Core::RakeTask.new(:system, :rspec_opts) do |t, args|
+    require_dependency 'quality/test_level'
+    t.pattern = Quality::TestLevel.new.pattern(:system)
+    t.rspec_opts = args[:rspec_opts]
+  end
+
+  desc '[Deprecated] Use the "bin/rspec --tag api" instead'
   task :api do
     cmds = [
       %w(rake gitlab:setup),
@@ -10,7 +35,7 @@ namespace :spec do
     run_commands(cmds)
   end
 
-  desc 'GitLab | Rspec | Run feature specs'
+  desc '[Deprecated] Use the "spec:system" task instead'
   task :feature do
     cmds = [
       %w(rake gitlab:setup),
@@ -19,7 +44,7 @@ namespace :spec do
     run_commands(cmds)
   end
 
-  desc 'GitLab | Rspec | Run model specs'
+  desc '[Deprecated] Use "bin/rspec spec/models" instead'
   task :models do
     cmds = [
       %w(rake gitlab:setup),
@@ -28,7 +53,7 @@ namespace :spec do
     run_commands(cmds)
   end
 
-  desc 'GitLab | Rspec | Run service specs'
+  desc '[Deprecated] Use "bin/rspec spec/services" instead'
   task :services do
     cmds = [
       %w(rake gitlab:setup),
@@ -37,7 +62,7 @@ namespace :spec do
     run_commands(cmds)
   end
 
-  desc 'GitLab | Rspec | Run lib specs'
+  desc '[Deprecated] Use "bin/rspec spec/lib" instead'
   task :lib do
     cmds = [
       %w(rake gitlab:setup),
@@ -45,15 +70,6 @@ namespace :spec do
     ]
     run_commands(cmds)
   end
-
-  desc 'GitLab | Rspec | Run other specs'
-  task :other do
-    cmds = [
-      %w(rake gitlab:setup),
-      %w(rspec spec --tag ~@api --tag ~@feature --tag ~@models --tag ~@lib --tag ~@services)
-    ]
-    run_commands(cmds)
-  end
 end
 
 desc "GitLab | Run specs"
diff --git a/scripts/prepare_build.sh b/scripts/prepare_build.sh
index 58b74f2f07d..5fca95f1f40 100644
--- a/scripts/prepare_build.sh
+++ b/scripts/prepare_build.sh
@@ -5,6 +5,7 @@ export USE_BUNDLE_INSTALL=${USE_BUNDLE_INSTALL:-true}
 export BUNDLE_INSTALL_FLAGS="--without=production --jobs=$(nproc) --path=vendor --retry=3 --quiet"
 
 if [ "$USE_BUNDLE_INSTALL" != "false" ]; then
+  bundle --version
   bundle install --clean $BUNDLE_INSTALL_FLAGS && bundle check
 fi
 
diff --git a/spec/lib/quality/test_level_spec.rb b/spec/lib/quality/test_level_spec.rb
new file mode 100644
index 00000000000..3465c3a050b
--- /dev/null
+++ b/spec/lib/quality/test_level_spec.rb
@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+require 'fast_spec_helper'
+
+RSpec.describe Quality::TestLevel do
+  describe '#pattern' do
+    context 'when level is unit' do
+      it 'returns a pattern' do
+        expect(subject.pattern(:unit))
+          .to eq("spec/{bin,config,db,dependencies,factories,finders,frontend,graphql,helpers,initializers,javascripts,lib,migrations,models,policies,presenters,rack_servers,routing,rubocop,serializers,services,sidekiq,tasks,uploaders,validators,views,workers,elastic_integration}{,/**/}*_spec.rb")
+      end
+    end
+
+    context 'when level is integration' do
+      it 'returns a pattern' do
+        expect(subject.pattern(:integration))
+          .to eq("spec/{controllers,mailers,requests}{,/**/}*_spec.rb")
+      end
+    end
+
+    context 'when level is system' do
+      it 'returns a pattern' do
+        expect(subject.pattern(:system))
+          .to eq("spec/{features}{,/**/}*_spec.rb")
+      end
+    end
+
+    context 'with a prefix' do
+      it 'returns a pattern' do
+        expect(described_class.new('ee/').pattern(:system))
+          .to eq("ee/spec/{features}{,/**/}*_spec.rb")
+      end
+    end
+
+    describe 'performance' do
+      it 'memoizes the pattern for a given level' do
+        expect(subject.pattern(:system).object_id).to eq(subject.pattern(:system).object_id)
+      end
+
+      it 'freezes the pattern for a given level' do
+        expect(subject.pattern(:system)).to be_frozen
+      end
+    end
+  end
+
+  describe '#regexp' do
+    context 'when level is unit' do
+      it 'returns a regexp' do
+        expect(subject.regexp(:unit))
+          .to eq(%r{spec/(bin|config|db|dependencies|factories|finders|frontend|graphql|helpers|initializers|javascripts|lib|migrations|models|policies|presenters|rack_servers|routing|rubocop|serializers|services|sidekiq|tasks|uploaders|validators|views|workers|elastic_integration)})
+      end
+    end
+
+    context 'when level is integration' do
+      it 'returns a regexp' do
+        expect(subject.regexp(:integration))
+          .to eq(%r{spec/(controllers|mailers|requests)})
+      end
+    end
+
+    context 'when level is system' do
+      it 'returns a regexp' do
+        expect(subject.regexp(:system))
+          .to eq(%r{spec/(features)})
+      end
+    end
+
+    context 'with a prefix' do
+      it 'returns a regexp' do
+        expect(described_class.new('ee/').regexp(:system))
+          .to eq(%r{ee/spec/(features)})
+      end
+    end
+
+    describe 'performance' do
+      it 'memoizes the regexp for a given level' do
+        expect(subject.regexp(:system).object_id).to eq(subject.regexp(:system).object_id)
+      end
+
+      it 'freezes the regexp for a given level' do
+        expect(subject.regexp(:system)).to be_frozen
+      end
+    end
+  end
+
+  describe '#level_for' do
+    it 'returns the correct level for a unit test' do
+      expect(subject.level_for('spec/models/abuse_report_spec.rb')).to eq(:unit)
+    end
+
+    it 'returns the correct level for an integration test' do
+      expect(subject.level_for('spec/mailers/abuse_report_mailer_spec.rb')).to eq(:integration)
+    end
+
+    it 'returns the correct level for a system test' do
+      expect(subject.level_for('spec/features/abuse_report_spec.rb')).to eq(:system)
+    end
+
+    it 'raises an error for an unknown level' do
+      expect { subject.level_for('spec/unknown/foo_spec.rb') }
+        .to raise_error(described_class::UnknownTestLevelError,
+          %r{Test level for spec/unknown/foo_spec.rb couldn't be set. Please rename the file properly or change the test level detection regexes in .+/lib/quality/test_level.rb.})
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 69589c9aa33..390a869d93f 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -44,6 +44,8 @@ Dir[Rails.root.join("spec/support/shared_contexts/*.rb")].each { |f| require f }
 Dir[Rails.root.join("spec/support/shared_examples/*.rb")].each { |f| require f }
 Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }
 
+quality_level = Quality::TestLevel.new
+
 RSpec.configure do |config|
   config.use_transactional_fixtures = false
   config.use_instantiated_fixtures  = false
@@ -55,9 +57,10 @@ RSpec.configure do |config|
   config.infer_spec_type_from_file_location!
   config.full_backtrace = !!ENV['CI']
 
-  config.define_derived_metadata(file_path: %r{/spec/}) do |metadata|
+  config.define_derived_metadata(file_path: %r{(ee)?/spec/.+_spec\.rb\z}) do |metadata|
     location = metadata[:location]
 
+    metadata[:level] = quality_level.level_for(location)
     metadata[:api] = true if location =~ %r{/spec/requests/api/}
 
     # do not overwrite type if it's already set
diff --git a/spec/support/shared_examples/finders/assignees_filter_spec.rb b/spec/support/shared_examples/finders/assignees_filter_shared_examples.rb
index 782a2d97746..782a2d97746 100644
--- a/spec/support/shared_examples/finders/assignees_filter_spec.rb
+++ b/spec/support/shared_examples/finders/assignees_filter_shared_examples.rb
diff --git a/spec/support/shared_examples/models/atomic_internal_id_spec.rb b/spec/support/shared_examples/models/atomic_internal_id_shared_examples.rb
index a248f60d23e..a248f60d23e 100644
--- a/spec/support/shared_examples/models/atomic_internal_id_spec.rb
+++ b/spec/support/shared_examples/models/atomic_internal_id_shared_examples.rb
diff --git a/spec/support/shared_examples/models/chat_service_spec.rb b/spec/support/shared_examples/models/chat_service_shared_examples.rb
index 0a302e7d030..0a302e7d030 100644
--- a/spec/support/shared_examples/models/chat_service_spec.rb
+++ b/spec/support/shared_examples/models/chat_service_shared_examples.rb
diff --git a/spec/support/shared_examples/models/update_project_statistics_spec.rb b/spec/support/shared_examples/models/update_project_statistics_shared_examples.rb
index 7a04e940ee5..7a04e940ee5 100644
--- a/spec/support/shared_examples/models/update_project_statistics_spec.rb
+++ b/spec/support/shared_examples/models/update_project_statistics_shared_examples.rb
diff --git a/spec/support/shared_examples/requests/api/issues_shared_example_spec.rb b/spec/support/shared_examples/requests/api/issues_shared_examples.rb
index 1133e95e44e..1133e95e44e 100644
--- a/spec/support/shared_examples/requests/api/issues_shared_example_spec.rb
+++ b/spec/support/shared_examples/requests/api/issues_shared_examples.rb