Add Namespace and ProjectStatistics to GraphQL API

We can query namespaces, and nested projects.

Projects now exposes statistics

5 files changed, 94 insertions, 1 deletions

diff --git a/spec/graphql/resolvers/namespace_projects_resolver_spec.rb b/spec/graphql/resolvers/namespace_projects_resolver_spec.rb
new file mode 100644
index 00000000000..395e08081d3
--- /dev/null
+++ b/spec/graphql/resolvers/namespace_projects_resolver_spec.rb
@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Resolvers::NamespaceProjectsResolver, :nested_groups do
+  include GraphqlHelpers
+
+  let(:current_user) { create(:user) }
+
+  context "with a group" do
+    let(:group) { create(:group) }
+    let(:namespace) { group }
+    let(:project1) { create(:project, namespace: namespace) }
+    let(:project2) { create(:project, namespace: namespace) }
+    let(:nested_group) { create(:group, parent: group) }
+    let(:nested_project) { create(:project, group: nested_group) }
+
+    before do
+      project1.add_developer(current_user)
+      project2.add_developer(current_user)
+      nested_project.add_developer(current_user)
+    end
+
+    describe '#resolve' do
+      it 'finds all projects' do
+        expect(resolve_projects).to contain_exactly(project1, project2)
+      end
+
+      it 'finds all projects including the subgroups' do
+        expect(resolve_projects(include_subgroups: true)).to contain_exactly(project1, project2, nested_project)
+      end
+
+      context 'with an user namespace' do
+        let(:namespace) { current_user.namespace }
+
+        it 'finds all projects' do
+          expect(resolve_projects).to contain_exactly(project1, project2)
+        end
+
+        it 'finds all projects including the subgroups' do
+          expect(resolve_projects(include_subgroups: true)).to contain_exactly(project1, project2)
+        end
+      end
+    end
+  end
+
+  context "when passing a non existent, batch loaded namespace" do
+    let(:namespace) do
+      BatchLoader.for("non-existent-path").batch do |_fake_paths, loader, _|
+        loader.call("non-existent-path", nil)
+      end
+    end
+
+    it "returns nil without breaking" do
+      expect(resolve_projects).to be_empty
+    end
+  end
+
+  it 'has an high complexity regardless of arguments' do
+    field = Types::BaseField.new(name: 'test', type: GraphQL::STRING_TYPE, resolver_class: described_class, null: false, max_page_size: 100)
+
+    expect(field.to_graphql.complexity.call({}, {}, 1)).to eq 24
+    expect(field.to_graphql.complexity.call({}, { include_subgroups: true }, 1)).to eq 24
+  end
+
+  def resolve_projects(args = { include_subgroups: false }, context = { current_user: current_user })
+    resolve(described_class, obj: namespace, args: args, ctx: context)
+  end
+end
diff --git a/spec/graphql/types/namespace_type.rb b/spec/graphql/types/namespace_type_spec.rb
index 7cd6a79ae5d..b4144cc4121 100644
--- a/spec/graphql/types/namespace_type.rb
+++ b/spec/graphql/types/namespace_type_spec.rb
@@ -4,4 +4,6 @@ require 'spec_helper'
 
 describe GitlabSchema.types['Namespace'] do
   it { expect(described_class.graphql_name).to eq('Namespace') }
+
+  it { expect(described_class).to have_graphql_field(:projects) }
 end
diff --git a/spec/graphql/types/project_statistics_type_spec.rb b/spec/graphql/types/project_statistics_type_spec.rb
new file mode 100644
index 00000000000..485e194edb1
--- /dev/null
+++ b/spec/graphql/types/project_statistics_type_spec.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe GitlabSchema.types['ProjectStatistics'] do
+  it "has all the required fields" do
+    is_expected.to have_graphql_fields(:storage_size, :repository_size, :lfs_objects_size,
+                                       :build_artifacts_size, :packages_size, :commit_count)
+  end
+end
diff --git a/spec/graphql/types/project_type_spec.rb b/spec/graphql/types/project_type_spec.rb
index 075fa7c7e43..cb5ac2e3cb1 100644
--- a/spec/graphql/types/project_type_spec.rb
+++ b/spec/graphql/types/project_type_spec.rb
@@ -19,4 +19,6 @@ describe GitlabSchema.types['Project'] do
   it { is_expected.to have_graphql_field(:pipelines) }
 
   it { is_expected.to have_graphql_field(:repository) }
+
+  it { is_expected.to have_graphql_field(:statistics) }
 end
diff --git a/spec/graphql/types/query_type_spec.rb b/spec/graphql/types/query_type_spec.rb
index b4626955816..af1972a2513 100644
--- a/spec/graphql/types/query_type_spec.rb
+++ b/spec/graphql/types/query_type_spec.rb
@@ -5,7 +5,17 @@ describe GitlabSchema.types['Query'] do
     expect(described_class.graphql_name).to eq('Query')
   end
 
-  it { is_expected.to have_graphql_fields(:project, :group, :echo, :metadata) }
+  it { is_expected.to have_graphql_fields(:project, :namespace, :group, :echo, :metadata) }
+
+  describe 'namespace field' do
+    subject { described_class.fields['namespace'] }
+
+    it 'finds namespaces by full path' do
+      is_expected.to have_graphql_arguments(:full_path)
+      is_expected.to have_graphql_type(Types::NamespaceType)
+      is_expected.to have_graphql_resolver(Resolvers::NamespaceResolver)
+    end
+  end
 
   describe 'project field' do
     subject { described_class.fields['project'] }