1 files changed, 69 insertions, 0 deletions
diff --git a/activestorage/test/test_helper.rb b/activestorage/test/test_helper.rb
new file mode 100644
index 0000000000..aaf1d452ea
--- /dev/null
+++ b/activestorage/test/test_helper.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+ENV["RAILS_ENV"] ||= "test"
+require_relative "dummy/config/environment.rb"
+
+require "bundler/setup"
+require "active_support"
+require "active_support/test_case"
+require "active_support/testing/autorun"
+require "mini_magick"
+
+begin
+  require "byebug"
+rescue LoadError
+end
+
+require "active_job"
+ActiveJob::Base.queue_adapter = :test
+ActiveJob::Base.logger = ActiveSupport::Logger.new(nil)
+
+# Filter out Minitest backtrace while allowing backtrace from other libraries
+# to be shown.
+Minitest.backtrace_filter = Minitest::BacktraceFilter.new
+
+require "yaml"
+SERVICE_CONFIGURATIONS = begin
+  erb = ERB.new(Pathname.new(File.expand_path("service/configurations.yml", __dir__)).read)
+  configuration = YAML.load(erb.result) || {}
+  configuration.deep_symbolize_keys
+rescue Errno::ENOENT
+  puts "Missing service configuration file in test/service/configurations.yml"
+  {}
+end
+
+require "tmpdir"
+ActiveStorage::Blob.service = ActiveStorage::Service::DiskService.new(root: Dir.mktmpdir("active_storage_tests"))
+
+ActiveStorage.logger = ActiveSupport::Logger.new(nil)
+ActiveStorage.verifier = ActiveSupport::MessageVerifier.new("Testing")
+
+class ActiveSupport::TestCase
+  self.file_fixture_path = File.expand_path("fixtures/files", __dir__)
+
+  private
+    def create_blob(data: "Hello world!", filename: "hello.txt", content_type: "text/plain")
+      ActiveStorage::Blob.create_after_upload! io: StringIO.new(data), filename: filename, content_type: content_type
+    end
+
+    def create_file_blob(filename: "racecar.jpg", content_type: "image/jpeg", metadata: nil)
+      ActiveStorage::Blob.create_after_upload! io: file_fixture(filename).open, filename: filename, content_type: content_type, metadata: metadata
+    end
+
+    def create_blob_before_direct_upload(filename: "hello.txt", byte_size:, checksum:, content_type: "text/plain")
+      ActiveStorage::Blob.create_before_direct_upload! filename: filename, byte_size: byte_size, checksum: checksum, content_type: content_type
+    end
+
+    def read_image(blob_or_variant)
+      MiniMagick::Image.open blob_or_variant.service.send(:path_for, blob_or_variant.key)
+    end
+end
+
+require "global_id"
+GlobalID.app = "ActiveStorageExampleApp"
+ActiveRecord::Base.send :include, GlobalID::Identification
+
+class User < ActiveRecord::Base
+  has_one_attached :avatar
+  has_many_attached :highlights
+end