1 files changed, 58 insertions, 0 deletions
diff --git a/spec/lib/gitlab/import_export/decompressed_archive_size_validator_spec.rb b/spec/lib/gitlab/import_export/decompressed_archive_size_validator_spec.rb
new file mode 100644
index 00000000000..302d11896c9
--- /dev/null
+++ b/spec/lib/gitlab/import_export/decompressed_archive_size_validator_spec.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::ImportExport::DecompressedArchiveSizeValidator do
+  let_it_be(:filepath) { File.join(Dir.tmpdir, 'decompressed_archive_size_validator_spec.gz') }
+
+  before(:all) do
+    create_compressed_file
+  end
+
+  after(:all) do
+    FileUtils.rm(filepath)
+  end
+
+  subject { described_class.new(archive_path: filepath, max_bytes: max_bytes) }
+
+  describe '#valid?' do
+    let(:max_bytes) { 1 }
+
+    context 'when file does not exceed allowed decompressed size' do
+      let(:max_bytes) { 20 }
+
+      it 'returns true' do
+        expect(subject.valid?).to eq(true)
+      end
+    end
+
+    context 'when file exceeds allowed decompressed size' do
+      it 'returns false' do
+        expect(subject.valid?).to eq(false)
+      end
+    end
+
+    context 'when something goes wrong during decompression' do
+      before do
+        allow(subject.archive_file).to receive(:eof?).and_raise(StandardError)
+      end
+
+      it 'logs and tracks raised exception' do
+        expect(Gitlab::ErrorTracking).to receive(:track_exception).with(instance_of(StandardError))
+        expect(Gitlab::Import::Logger).to receive(:info).with(hash_including(message: 'Decompressed archive size validation failed.'))
+
+        subject.valid?
+      end
+
+      it 'returns false' do
+        expect(subject.valid?).to eq(false)
+      end
+    end
+  end
+
+  def create_compressed_file
+    Zlib::GzipWriter.open(filepath) do |gz|
+      gz.write('Hello World!')
+    end
+  end
+end