discourse/spec/jobs/exporter_spec.rb

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require 'spec_helper'
require_dependency 'jobs/base'
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describe Jobs::Exporter do
before do
Jobs::Exporter.any_instance.stubs(:log).returns(true)
Jobs::Exporter.any_instance.stubs(:create_tar_file).returns(true)
Export::JsonEncoder.any_instance.stubs(:tmp_directory).returns( File.join(Rails.root, 'tmp', 'exporter_spec') )
Discourse.stubs(:enable_maintenance_mode).returns(true)
Discourse.stubs(:disable_maintenance_mode).returns(true)
end
describe "execute" do
context 'when no export or import is running' do
before do
@testIO = StringIO.new
Export::JsonEncoder.any_instance.stubs(:json_output_stream).returns(@testIO)
Jobs::Exporter.any_instance.stubs(:ordered_models_for_export).returns([])
Export.stubs(:is_export_running?).returns(false)
Export.stubs(:is_import_running?).returns(false)
@exporter_args = {}
end
it "should indicate that an export is running" do
seq = sequence('call sequence')
Export.expects(:set_export_started).in_sequence(seq).at_least_once
Export.expects(:set_export_is_not_running).in_sequence(seq).at_least_once
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Jobs::Exporter.new.execute( @exporter_args )
end
it "should put the site in maintenance mode when it starts" do
encoder = stub_everything
Export::JsonEncoder.stubs(:new).returns(encoder)
seq = sequence('export-sequence')
Discourse.expects(:enable_maintenance_mode).in_sequence(seq).at_least_once
encoder.expects(:write_schema_info).in_sequence(seq).at_least_once
Jobs::Exporter.new.execute( @exporter_args )
end
it "should take the site out of maintenance mode when it ends" do
encoder = stub_everything
Export::JsonEncoder.stubs(:new).returns(encoder)
seq = sequence('export-sequence')
encoder.expects(:write_schema_info).in_sequence(seq).at_least_once
Discourse.expects(:disable_maintenance_mode).in_sequence(seq).at_least_once
Jobs::Exporter.new.execute( @exporter_args )
end
describe "without specifying a format" do
it "should use json as the default" do
Export::JsonEncoder.expects(:new).returns( stub_everything )
Jobs::Exporter.new.execute( @exporter_args.reject { |key, val| key == :format } )
end
end
describe "specifying an invalid format" do
it "should raise an exception and not flag that an export has started" do
Jobs::Exporter.expects(:set_export_started).never
expect {
Jobs::Exporter.new.execute( @exporter_args.merge( format: :interpretive_dance ) )
}.to raise_error(Export::FormatInvalidError)
end
end
context "using json format" do
before do
@exporter_args = {format: :json}
end
it "should export metadata" do
version = '201212121212'
encoder = stub_everything
encoder.expects(:write_schema_info).with do |arg|
arg[:source].should == 'discourse'
arg[:version].should == version
end
Export::JsonEncoder.stubs(:new).returns(encoder)
Export.stubs(:current_schema_version).returns(version)
Jobs::Exporter.new.execute( @exporter_args )
end
describe "exporting tables" do
before do
# Create some real database records
@user1, @user2 = Fabricate(:user), Fabricate(:user)
@topic1 = Fabricate(:topic, user: @user1)
@topic2 = Fabricate(:topic, user: @user2)
@topic3 = Fabricate(:topic, user: @user1)
@post1 = Fabricate(:post, topic: @topic1, user: @user1)
@post1 = Fabricate(:post, topic: @topic3, user: @user1)
@reply1 = Fabricate(:basic_reply, user: @user2, topic: @topic3)
@reply1.save_reply_relationships
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@reply2 = Fabricate(:basic_reply, user: @user1, topic: @topic1)
@reply2.save_reply_relationships
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@reply3 = Fabricate(:basic_reply, user: @user1, topic: @topic3)
@reply3.save_reply_relationships
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end
it "should export all rows from the topics table in ascending id order" do
Jobs::Exporter.any_instance.stubs(:ordered_models_for_export).returns([Topic])
Jobs::Exporter.new.execute( @exporter_args )
json = JSON.parse( @testIO.string )
json.should have_key('topics')
json['topics'].should have_key('rows')
json['topics']['rows'].should have(3).rows
json['topics']['rows'][0][0].to_i.should == @topic1.id
json['topics']['rows'][1][0].to_i.should == @topic2.id
json['topics']['rows'][2][0].to_i.should == @topic3.id
end
it "should export all rows from the post_replies table in ascending order by post_id, reply_id" do
# because post_replies doesn't have an id column, so order by one of its indexes
Jobs::Exporter.any_instance.stubs(:ordered_models_for_export).returns([PostReply])
Jobs::Exporter.new.execute( @exporter_args )
json = JSON.parse( @testIO.string )
json.should have_key('post_replies')
json['post_replies'].should have_key('rows')
json['post_replies']['rows'].should have(3).rows
json['post_replies']['rows'][0][1].to_i.should == @reply2.id
json['post_replies']['rows'][1][1].to_i.should == @reply1.id
json['post_replies']['rows'][2][1].to_i.should == @reply3.id
end
it "should export column names for each table" do
Jobs::Exporter.any_instance.stubs(:ordered_models_for_export).returns([Topic, TopicUser, PostReply])
Jobs::Exporter.new.execute( @exporter_args )
json = JSON.parse( @testIO.string )
json['topics'].should have_key('fields')
json['topic_users'].should have_key('fields')
json['post_replies'].should have_key('fields')
json['topics']['fields'].should == Topic.columns.map(&:name)
json['topic_users']['fields'].should == TopicUser.columns.map(&:name)
json['post_replies']['fields'].should == PostReply.columns.map(&:name)
end
end
end
context "when it finishes successfully" do
context "and no user was given" do
it "should not send a notification to anyone" do
expect {
Jobs::Exporter.new.execute( @exporter_args )
}.to_not change { Notification.count }
end
end
context "and a user was given" do
before do
@user = Fabricate(:user)
@admin = Fabricate(:admin)
end
it "should send a notification to the user who started the export" do
ActiveRecord::Base.observers.enable :all
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expect {
Jobs::Exporter.new.execute( @exporter_args.merge( user_id: @user.id ) )
}.to change { Notification.count }.by(1)
end
end
end
end
context 'when an export is already running' do
before do
Export.expects(:is_export_running?).returns(true)
end
it "should not start an export and raise an exception" do
Export.expects(:set_export_started).never
Jobs::Exporter.any_instance.expects(:start_export).never
expect {
Jobs::Exporter.new.execute({})
}.to raise_error(Export::ExportInProgressError)
end
end
context 'when an import is running' do
before do
Import.expects(:is_import_running?).returns(true)
end
it "should not start an export and raise an exception" do
Export.expects(:set_export_started).never
Jobs::Exporter.any_instance.expects(:start_export).never
expect {
Jobs::Exporter.new.execute({})
}.to raise_error(Import::ImportInProgressError)
end
end
end
end