1 files changed, 160 insertions, 0 deletions
diff --git a/spec/models/project_statistics_spec.rb b/spec/models/project_statistics_spec.rb
new file mode 100644
index 00000000000..ff29f6f66ba
--- /dev/null
+++ b/spec/models/project_statistics_spec.rb
@@ -0,0 +1,160 @@
+require 'rails_helper'
+
+describe ProjectStatistics, models: true do
+  let(:project) { create :empty_project }
+  let(:statistics) { project.statistics }
+
+  describe 'constants' do
+    describe 'STORAGE_COLUMNS' do
+      it 'is an array of symbols' do
+        expect(described_class::STORAGE_COLUMNS).to be_kind_of Array
+        expect(described_class::STORAGE_COLUMNS.map(&:class).uniq).to eq [Symbol]
+      end
+    end
+
+    describe 'STATISTICS_COLUMNS' do
+      it 'is an array of symbols' do
+        expect(described_class::STATISTICS_COLUMNS).to be_kind_of Array
+        expect(described_class::STATISTICS_COLUMNS.map(&:class).uniq).to eq [Symbol]
+      end
+
+      it 'includes all storage columns' do
+        expect(described_class::STATISTICS_COLUMNS & described_class::STORAGE_COLUMNS).to eq described_class::STORAGE_COLUMNS
+      end
+    end
+  end
+
+  describe 'associations' do
+    it { is_expected.to belong_to(:project) }
+    it { is_expected.to belong_to(:namespace) }
+  end
+
+  describe 'statistics columns' do
+    it "support values up to 8 exabytes" do
+      statistics.update!(
+        commit_count: 8.exabytes - 1,
+        repository_size: 2.exabytes,
+        lfs_objects_size: 2.exabytes,
+        build_artifacts_size: 4.exabytes - 1,
+      )
+
+      statistics.reload
+
+      expect(statistics.commit_count).to eq(8.exabytes - 1)
+      expect(statistics.repository_size).to eq(2.exabytes)
+      expect(statistics.lfs_objects_size).to eq(2.exabytes)
+      expect(statistics.build_artifacts_size).to eq(4.exabytes - 1)
+      expect(statistics.storage_size).to eq(8.exabytes - 1)
+    end
+  end
+
+  describe '#total_repository_size' do
+    it "sums repository and LFS object size" do
+      statistics.repository_size = 2
+      statistics.lfs_objects_size = 3
+      statistics.build_artifacts_size = 4
+
+      expect(statistics.total_repository_size).to eq 5
+    end
+  end
+
+  describe '#refresh!' do
+    before do
+      allow(statistics).to receive(:update_commit_count)
+      allow(statistics).to receive(:update_repository_size)
+      allow(statistics).to receive(:update_lfs_objects_size)
+      allow(statistics).to receive(:update_build_artifacts_size)
+      allow(statistics).to receive(:update_storage_size)
+    end
+
+    context "without arguments" do
+      before do
+        statistics.refresh!
+      end
+
+      it "sums all counters" do
+        expect(statistics).to have_received(:update_commit_count)
+        expect(statistics).to have_received(:update_repository_size)
+        expect(statistics).to have_received(:update_lfs_objects_size)
+        expect(statistics).to have_received(:update_build_artifacts_size)
+      end
+    end
+
+    context "when passing an only: argument" do
+      before do
+        statistics.refresh! only: [:lfs_objects_size]
+      end
+
+      it "only updates the given columns" do
+        expect(statistics).to have_received(:update_lfs_objects_size)
+        expect(statistics).not_to have_received(:update_commit_count)
+        expect(statistics).not_to have_received(:update_repository_size)
+        expect(statistics).not_to have_received(:update_build_artifacts_size)
+      end
+    end
+  end
+
+  describe '#update_commit_count' do
+    before do
+      allow(project.repository).to receive(:commit_count).and_return(23)
+      statistics.update_commit_count
+    end
+
+    it "stores the number of commits in the repository" do
+      expect(statistics.commit_count).to eq 23
+    end
+  end
+
+  describe '#update_repository_size' do
+    before do
+      allow(project.repository).to receive(:size).and_return(12)
+      statistics.update_repository_size
+    end
+
+    it "stores the size of the repository" do
+      expect(statistics.repository_size).to eq 12.megabytes
+    end
+  end
+
+  describe '#update_lfs_objects_size' do
+    let!(:lfs_object1) { create(:lfs_object, size: 23.megabytes) }
+    let!(:lfs_object2) { create(:lfs_object, size: 34.megabytes) }
+    let!(:lfs_objects_project1) { create(:lfs_objects_project, project: project, lfs_object: lfs_object1) }
+    let!(:lfs_objects_project2) { create(:lfs_objects_project, project: project, lfs_object: lfs_object2) }
+
+    before do
+      statistics.update_lfs_objects_size
+    end
+
+    it "stores the size of related LFS objects" do
+      expect(statistics.lfs_objects_size).to eq 57.megabytes
+    end
+  end
+
+  describe '#update_build_artifacts_size' do
+    let!(:pipeline) { create(:ci_pipeline, project: project) }
+    let!(:build1) { create(:ci_build, pipeline: pipeline, artifacts_size: 45.megabytes) }
+    let!(:build2) { create(:ci_build, pipeline: pipeline, artifacts_size: 56.megabytes) }
+
+    before do
+      statistics.update_build_artifacts_size
+    end
+
+    it "stores the size of related build artifacts" do
+      expect(statistics.build_artifacts_size).to eq 101.megabytes
+    end
+  end
+
+  describe '#update_storage_size' do
+    it "sums all storage counters" do
+      statistics.update!(
+        repository_size: 2,
+        lfs_objects_size: 3,
+      )
+
+      statistics.reload
+
+      expect(statistics.storage_size).to eq 5
+    end
+  end
+end