1 files changed, 52 insertions, 0 deletions
diff --git a/spec/lib/backup/database_spec.rb b/spec/lib/backup/database_spec.rb
new file mode 100644
index 00000000000..fccd6db0018
--- /dev/null
+++ b/spec/lib/backup/database_spec.rb
@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Backup::Database do
+  let(:progress) { StringIO.new }
+  let(:output) { progress.string }
+
+  describe '#restore' do
+    let(:cmd) { %W[#{Gem.ruby} -e $stdout.puts(1)] }
+    let(:data) { Rails.root.join("spec/fixtures/pages_empty.tar.gz").to_s }
+
+    subject { described_class.new(progress, filename: data) }
+
+    before do
+      allow(subject).to receive(:pg_restore_cmd).and_return(cmd)
+    end
+
+    context 'with an empty .gz file' do
+      let(:data) { Rails.root.join("spec/fixtures/pages_empty.tar.gz").to_s }
+
+      it 'returns successfully' do
+        expect(subject.restore).to eq([])
+
+        expect(output).to include("Restoring PostgreSQL database")
+        expect(output).to include("[DONE]")
+        expect(output).not_to include("ERRORS")
+      end
+    end
+
+    context 'with a corrupted .gz file' do
+      let(:data) { Rails.root.join("spec/fixtures/big-image.png").to_s }
+
+      it 'raises a backup error' do
+        expect { subject.restore }.to raise_error(Backup::Error)
+      end
+    end
+
+    context 'when the restore command prints errors' do
+      let(:visible_error) { "This is a test error\n" }
+      let(:noise) { "Table projects does not exist\nmust be owner of extension pg_trgm\n" }
+      let(:cmd) { %W[#{Gem.ruby} -e $stderr.write("#{noise}#{visible_error}")] }
+
+      it 'filters out noise from errors' do
+        expect(subject.restore).to eq([visible_error])
+        expect(output).to include("ERRORS")
+        expect(output).not_to include(noise)
+        expect(output).to include(visible_error)
+      end
+    end
+  end
+end