1 files changed, 36 insertions, 0 deletions
diff --git a/spec/lib/backup/dump/postgres_spec.rb b/spec/lib/backup/dump/postgres_spec.rb
new file mode 100644
index 00000000000..f6a68ab6db9
--- /dev/null
+++ b/spec/lib/backup/dump/postgres_spec.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Backup::Dump::Postgres, feature_category: :backup_restore do
+  describe '#dump' do
+    let(:pg_database) { 'gitlabhq_test' }
+    let(:destination_dir) { Dir.mktmpdir }
+    let(:db_file_name) { File.join(destination_dir, 'output.gz') }
+
+    let(:pipes) { IO.pipe }
+    let(:gzip_pid) { spawn('gzip -c -1', in: pipes[0], out: [db_file_name, 'w', 0o600]) }
+    let(:pg_dump_pid) { Process.spawn('pg_dump', *args, pg_database, out: pipes[1]) }
+    let(:args) { ['--help'] }
+
+    subject { described_class.new }
+
+    before do
+      allow(IO).to receive(:pipe).and_return(pipes)
+    end
+
+    after do
+      FileUtils.remove_entry destination_dir
+    end
+
+    it 'creates gzipped dump using supplied arguments' do
+      expect(subject).to receive(:spawn).with('gzip -c -1', in: pipes.first,
+                                                            out: [db_file_name, 'w', 0o600]).and_return(gzip_pid)
+      expect(Process).to receive(:spawn).with('pg_dump', *args, pg_database, out: pipes[1]).and_return(pg_dump_pid)
+
+      subject.dump(pg_database, db_file_name, args)
+
+      expect(File.exist?(db_file_name)).to eq(true)
+    end
+  end
+end