refactoring database parsing

app/services/db/update_db.rb

@@ -9,13 +9,13 @@ class UpdateDb
     super()
   end
 
-  def run(db_adapter:)
+  def run(schema)
     # create the root folder if it doesn't exist
     @db.root_folder ||= DbFolder.create(name: 'root', path: '/')
     @root_folder = @db.root_folder
 
     # create the entry array from the schema
-    entries = __create_entries(db_adapter.schema)
+    entries = __create_entries(schema)
 
     updater = UpdateFolder.new(@root_folder, entries)
     absorb_status(updater.run)

spec/factories/db_schema_helper.rb

@@ -16,7 +16,6 @@ class DbSchemaHelper
       streams: __build_streams(stream_count)
     }
   end
-  # rubocop:enable Metrics/MethodLength
 
   # build stream hash for a file
   def __build_streams(count)

spec/services/db/update_db_spec.rb

@@ -26,13 +26,9 @@ simple_db = [
 describe 'UpdateDb' do
   describe '*run*' do
     def update_with_schema(schema, db: nil)
-      # stub the database adapter
-      adapter = instance_double(DbAdapter)
-      allow(adapter).to receive(:schema).and_return(Array.new(schema))
-      # run the update
       @db = db || Db.new
       @service = UpdateDb.new(db: @db)
-      @service.run(db_adapter: adapter)
+      @service.run(schema)
       @root = @db.root_folder
     end
     # simple schema parsing
@@ -187,36 +183,5 @@ describe 'UpdateDb' do
         expect(@folder.subfolders.count).to eq(1)
       end
     end
-    describe 'given changes to remote metadata' do
-      it 'updates file info' do
-        # create Db with 1 folder and file
-        update_with_schema([helper.entry('/folder1/file1',
-                            metadata: { name: 'old_name' })])
-        file = DbFile.find_by_name('old_name')
-        expect(file).to be_present
-        # run update again with new metadata
-        update_with_schema([helper.entry('/folder1/file1',
-                            metadata: { name: 'new_name' })],
-                           db: @db)
-        file.reload
-        expect(file.name).to eq('new_name')
-      end
-
-      it 'updates folder info' do
-        # create Db with folder and subfolder
-        update_with_schema([helper.entry('/folder1/subfolder/info',
-                            metadata: { name: 'old_name' })])
-        folder = DbFolder.find_by_name('old_name')
-        expect(folder).to be_present
-        # run update again with new metadata
-        update_with_schema([helper.entry('/folder1/subfolder/info',
-                            metadata: { name: 'new_name' })],
-                           db: @db)
-        folder.reload
-        expect(folder.name).to eq('new_name')
-      end
-      it 'adds new streams'
-      it 'removes missing streams'
-    end
   end
 end

spec/services/db_file/update_file_spec.rb

+# frozen_string_literal: true
+
+require 'rails_helper'
+helper = DbSchemaHelper.new
+
+describe 'UpdateFile service' do
+  let(:db) { Db.new }
+  let(:service) { UpdateDb.new(db: db) }
+
+  it 'updates file info' do
+    # create Db with 1 folder and file
+    service.run([helper.entry('/folder1/file1',
+                              metadata: { name: 'old_name' })])
+    file = DbFile.find_by_name('old_name')
+    expect(file).to be_present
+    # run update again with new metadata
+    service = UpdateDb.new(db: db)
+    service.run([helper.entry('/folder1/file1',
+                              metadata: { name: 'new_name' })])
+    file.reload
+    expect(file.name).to eq('new_name')
+  end
+
+  it 'updates stream info' do
+    # create Db with file with 1 stream
+    schema = [helper.entry('/folder1/subfolder/file',
+                           stream_count: 1)]
+    schema[0][:streams][0][:name] = 'old_name'
+    service.run(schema)
+    stream = DbStream.find_by_name('old_name')
+    expect(stream).to be_present
+    # run update again with new metadata
+    schema[0][:streams][0][:name] = 'new_name'
+    service = UpdateDb.new(db: db)
+    service.run(schema)
+    stream.reload
+    expect(stream.name).to eq('new_name')
+  end
+end

spec/services/folder/update_folder_spec.rb

+# frozen_string_literal: true
+
+require 'rails_helper'
+helper = DbSchemaHelper.new
+
+describe 'UpdateFolder service' do
+  let(:db) { Db.new }
+  let(:service) { UpdateDb.new(db: db) }
+
+  it 'updates folder info' do
+    # create Db with folder and subfolder
+    service.run([helper.entry('/folder1/subfolder/info',
+                              metadata: { name: 'old_name' })])
+    folder = DbFolder.find_by_name('old_name')
+    expect(folder).to be_present
+    # run update again with new metadata
+    service = UpdateDb.new(db: db)
+    service.run([helper.entry('/folder1/subfolder/info',
+                              metadata: { name: 'new_name' })])
+    folder.reload
+    expect(folder.name).to eq('new_name')
+  end
+
+  # run update again with different streams
+  it 'removes missing streams'
+end