1 files changed, 73 insertions, 0 deletions
diff --git a/spec/services/packages/go/create_package_service_spec.rb b/spec/services/packages/go/create_package_service_spec.rb
new file mode 100644
index 00000000000..5c5fec0aa3a
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+++ b/spec/services/packages/go/create_package_service_spec.rb
@@ -0,0 +1,73 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Packages::Go::CreatePackageService do
+  let_it_be(:project) { create :project_empty_repo, path: 'my-go-lib' }
+  let_it_be(:mod) { create :go_module, project: project }
+
+  before :all do
+    create :go_module_commit, :module, project: project, tag: 'v1.0.0'
+  end
+
+  shared_examples 'creates a package' do |files:|
+    it "returns a valid package with #{files ? files.to_s : 'no'} file(s)" do
+      expect(subject).to be_valid
+      expect(subject.name).to eq(version.mod.name)
+      expect(subject.version).to eq(version.name)
+      expect(subject.package_type).to eq('golang')
+      expect(subject.created_at).to eq(version.commit.committed_date)
+      expect(subject.package_files.count).to eq(files)
+    end
+  end
+
+  shared_examples 'creates a package file' do |type|
+    it "returns a package with a #{type} file" do
+      file_name = "#{version.name}.#{type}"
+      expect(subject.package_files.map { |f| f.file_name }).to include(file_name)
+
+      file = subject.package_files.with_file_name(file_name).first
+      expect(file).not_to be_nil
+      expect(file.file).not_to be_nil
+      expect(file.size).to eq(file.file.size)
+      expect(file.file_name).to eq(file_name)
+      expect(file.file_md5).not_to be_nil
+      expect(file.file_sha1).not_to be_nil
+      expect(file.file_sha256).not_to be_nil
+    end
+  end
+
+  describe '#execute' do
+    subject { described_class.new(project, nil, version: version).execute }
+
+    let(:version) { create :go_module_version, :tagged, mod: mod, name: 'v1.0.0' }
+
+    context 'with no existing package' do
+      it_behaves_like 'creates a package', files: 2
+      it_behaves_like 'creates a package file', :mod
+      it_behaves_like 'creates a package file', :zip
+
+      it 'creates a new package' do
+        expect { subject }
+          .to change { project.packages.count }.by(1)
+          .and change { Packages::PackageFile.count }.by(2)
+      end
+    end
+
+    context 'with an existing package' do
+      before do
+        described_class.new(project, version: version).execute
+      end
+
+      it_behaves_like 'creates a package', files: 2
+      it_behaves_like 'creates a package file', :mod
+      it_behaves_like 'creates a package file', :zip
+
+      it 'does not create a package or files' do
+        expect { subject }
+          .to not_change { project.packages.count }
+          .and not_change { Packages::PackageFile.count }
+      end
+    end
+  end
+end