Squashed commit of the following:

commit b4e71d4f5a1334a27c179d086bfea57c707de4ef
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 20:07:09 2018 +0900

    Add changelog

commit 50bc02ca6cfcf9c8d18d5c832a00c0f9f778d475
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 20:05:17 2018 +0900

    Fix fixture path

commit 15779300f98e00277db0e66fcfd865f603b45234
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 19:59:14 2018 +0900

    Revert leftovers

commit e26c0ce6b1fc490c1ad8c53fd8da5b95f8ef27ed
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 19:57:30 2018 +0900

    Revert quick actions

commit 9e257650ad8683c5628fd717fb21a8767bfca0fc
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 19:28:40 2018 +0900

    Add changelog

commit 473edcf4e60200c5ec9f6b92907d4badcf9c6a94
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 19:27:25 2018 +0900

    Fix specs

commit fa2d4f76235c8aa19de9712288f5c225c47ea5f0
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 19:20:21 2018 +0900

    Fix fixture

commit ee3df6595e4693c4ff11b8799aa15fc2078b7843
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 19:14:12 2018 +0900

    Clean up quick action scripts

commit 2398de2711f196c2a3fdedbd52b878489e7aa01e
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 18:15:21 2018 +0900

    Add quick action tasks

commit b0dbc47e2c29419133c1a24ed6922a68584a3e28
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Wed Aug 8 15:33:24 2018 +0900

    Simplify fixtures

commit 693a95f2edb400a3db0e6e6f3021777f849f9400
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Tue Aug 7 13:11:07 2018 +0900

    Support corrupted fixtures

commit d4e44eb329193cd68c964424f5343d3863802751
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Thu Aug 2 19:07:46 2018 +0900

    bring back debaggable fixtures

commit 466d3ffefac20d0f3eec350ea7231e0e403da90d
Author: Shinya Maeda <shinya@gitlab.com>
Date:   Thu Aug 2 15:25:30 2018 +0900

    Revert "Decouple fixture seeds change"

    This reverts commit 30626cf8.

changelogs/unreleased/fix-pipeline-fixture-seeder.yml

+---
+title: Fix pipeline fixture seeder
+merge_request: 21088
+author:
+type: fixed

db/fixtures/development/14_pipelines.rb

@@ -41,7 +41,7 @@ class Gitlab::Seeder::Pipelines
       when: 'manual', status: :skipped },
 
     # notify stage
-    { name: 'slack', stage: 'notify', when: 'manual', status: :created },
+    { name: 'slack', stage: 'notify', when: 'manual', status: :success },
   ]
   EXTERNAL_JOBS = [
     { name: 'jenkins', stage: 'test', status: :success,
@@ -54,16 +54,10 @@ class Gitlab::Seeder::Pipelines
 
   def seed!
     pipelines.each do |pipeline|
-      begin
-        BUILDS.each { |opts| build_create!(pipeline, opts) }
-        EXTERNAL_JOBS.each { |opts| commit_status_create!(pipeline, opts) }
-        print '.'
-      rescue ActiveRecord::RecordInvalid
-        print 'F'
-      ensure
-        pipeline.update_duration
-        pipeline.update_status
-      end
+      BUILDS.each { |opts| build_create!(pipeline, opts) }
+      EXTERNAL_JOBS.each { |opts| commit_status_create!(pipeline, opts) }
+      pipeline.update_duration
+      pipeline.update_status
     end
   end
 
@@ -87,7 +81,9 @@ class Gitlab::Seeder::Pipelines
       branch = merge_request.source_branch
 
       merge_request.commits.last(4).map do |commit|
-        create_pipeline!(project, branch, commit)
+        create_pipeline!(project, branch, commit).tap do |pipeline|
+          merge_request.update!(head_pipeline_id: pipeline.id)
+        end
       end
     end
 
@@ -98,7 +94,7 @@ class Gitlab::Seeder::Pipelines
 
 
   def create_pipeline!(project, ref, commit)
-    project.pipelines.create(sha: commit.id, ref: ref, source: :push)
+    project.pipelines.create!(sha: commit.id, ref: ref, source: :push)
   end
 
   def build_create!(pipeline, opts = {})
@@ -111,24 +107,39 @@ class Gitlab::Seeder::Pipelines
       # block directly to `Ci::Build#create!`.
 
       setup_artifacts(build)
+      setup_test_reports(build)
       setup_build_log(build)
 
       build.project.environments.
         find_or_create_by(name: build.expanded_environment_name)
 
-      build.save
+      build.save!
     end
   end
 
   def setup_artifacts(build)
-    return unless %w[build test].include?(build.stage)
+    return unless build.stage == "build"
 
     artifacts_cache_file(artifacts_archive_path) do |file|
-      build.job_artifacts.build(project: build.project, file_type: :archive, file: file)
+      build.job_artifacts.build(project: build.project, file_type: :archive, file_format: :zip, file: file)
     end
 
     artifacts_cache_file(artifacts_metadata_path) do |file|
-      build.job_artifacts.build(project: build.project, file_type: :metadata, file: file)
+      build.job_artifacts.build(project: build.project, file_type: :metadata, file_format: :gzip, file: file)
+    end
+  end
+
+  def setup_test_reports(build)
+    return unless build.stage == "test" && build.name == "rspec:osx"
+
+    if build.ref == build.project.default_branch
+      artifacts_cache_file(test_reports_pass_path) do |file|
+        build.job_artifacts.build(project: build.project, file_type: :junit, file_format: :gzip, file: file)
+      end
+    else
+      artifacts_cache_file(test_reports_failed_path) do |file|
+        build.job_artifacts.build(project: build.project, file_type: :junit, file_format: :gzip, file: file)
+      end
     end
   end
 
@@ -171,13 +182,21 @@ class Gitlab::Seeder::Pipelines
     Rails.root + 'spec/fixtures/ci_build_artifacts_metadata.gz'
   end
 
+  def test_reports_pass_path
+    Rails.root + 'spec/fixtures/junit/junit_ant.xml.gz'
+  end
+
+  def test_reports_failed_path
+    Rails.root + 'spec/fixtures/junit/junit.xml.gz'
+  end
+
   def artifacts_cache_file(file_path)
-    cache_path = file_path.to_s.gsub('ci_', "p#{@project.id}_")
+    file = Tempfile.new("artifacts")
+    file.close
 
-    FileUtils.copy(file_path, cache_path)
-    File.open(cache_path) do |file|
-      yield file
-    end
+    FileUtils.copy(file_path, file.path)
+
+    yield(UploadedFile.new(file.path, filename: File.basename(file_path)))
   end
 end