Modify GithubImport to support Gitea

The reason is that Gitea plan to be GitHub-compatible so it makes sense
to just modify GitHubImport a bit for now, and hopefully we can change
it to GitHubishImport once Gitea is 100%-compatible.

Signed-off-by: Rémy Coutable <remy@rymai.me>

2 files changed, 238 insertions, 0 deletions

diff --git a/spec/support/controllers/githubish_import_controller_shared_context.rb b/spec/support/controllers/githubish_import_controller_shared_context.rb
new file mode 100644
index 00000000000..e71994edec6
--- /dev/null
+++ b/spec/support/controllers/githubish_import_controller_shared_context.rb
@@ -0,0 +1,10 @@
+shared_context 'a GitHub-ish import controller' do
+  let(:user) { create(:user) }
+  let(:token) { "asdasd12345" }
+  let(:access_params) { { github_access_token: token } }
+
+  before do
+    sign_in(user)
+    allow(controller).to receive(:"#{provider}_import_enabled?").and_return(true)
+  end
+end
diff --git a/spec/support/controllers/githubish_import_controller_shared_examples.rb b/spec/support/controllers/githubish_import_controller_shared_examples.rb
new file mode 100644
index 00000000000..e11ab802095
--- /dev/null
+++ b/spec/support/controllers/githubish_import_controller_shared_examples.rb
@@ -0,0 +1,228 @@
+# Specifications for behavior common to all objects with an email attribute.
+# Takes a list of email-format attributes and requires:
+# - subject { "the object with a attribute= setter"  }
+#   Note: You have access to `email_value` which is the email address value
+#         being currently tested).
+
+shared_examples 'a GitHub-ish import controller: POST personal_access_token' do
+  let(:status_import_url) { public_send("status_import_#{provider}_url") }
+
+  it "updates access token" do
+    token = 'asdfasdf9876'
+
+    allow_any_instance_of(Gitlab::GithubImport::Client).
+      to receive(:user).and_return(true)
+
+    post :personal_access_token, personal_access_token: token
+
+    expect(session[:access_token]).to eq(token)
+    expect(controller).to redirect_to(status_import_url)
+  end
+end
+
+shared_examples 'a GitHub-ish import controller: GET new' do
+  let(:status_import_url) { public_send("status_import_#{provider}_url") }
+
+  it "redirects to status if we already have a token" do
+    assign_session_token
+    allow(controller).to receive(:logged_in_with_provider?).and_return(false)
+
+    get :new
+
+    expect(controller).to redirect_to(status_import_url)
+  end
+
+  it "renders the :new page if no token is present in session" do
+    get :new
+
+    expect(response).to render_template(:new)
+  end
+end
+
+shared_examples 'a GitHub-ish import controller: GET status' do
+  let(:new_import_url) { public_send("new_import_#{provider}_url") }
+  let(:user) { create(:user) }
+  let(:repo) { OpenStruct.new(login: 'vim', full_name: 'asd/vim') }
+  let(:org) { OpenStruct.new(login: 'company') }
+  let(:org_repo) { OpenStruct.new(login: 'company', full_name: 'company/repo') }
+  let(:extra_assign_expectations) { {} }
+
+  before do
+    assign_session_token
+  end
+
+  it "assigns variables" do
+    project = create(:empty_project, import_type: provider, creator_id: user.id)
+    stub_client(repos: [repo, org_repo], orgs: [org], org_repos: [org_repo])
+
+    get :status
+
+    expect(assigns(:already_added_projects)).to eq([project])
+    expect(assigns(:repos)).to eq([repo, org_repo])
+    extra_assign_expectations.each do |key, value|
+      expect(assigns(key)).to eq(value)
+    end
+  end
+
+  it "does not show already added project" do
+    project = create(:empty_project, import_type: provider, creator_id: user.id, import_source: 'asd/vim')
+    stub_client(repos: [repo], orgs: [])
+
+    get :status
+
+    expect(assigns(:already_added_projects)).to eq([project])
+    expect(assigns(:repos)).to eq([])
+  end
+
+  it "handles an invalid access token" do
+    allow_any_instance_of(Gitlab::GithubImport::Client).
+      to receive(:repos).and_raise(Octokit::Unauthorized)
+
+    get :status
+
+    expect(session[:access_token]).to eq(nil)
+    expect(controller).to redirect_to(new_import_url)
+    expect(flash[:alert]).to eq("Access denied to your #{Gitlab::ImportSources.title(provider.to_s)} account.")
+  end
+end
+
+shared_examples 'a GitHub-ish import controller: POST create' do
+  let(:user) { create(:user) }
+  let(:provider_username) { user.username }
+  let(:provider_user) { OpenStruct.new(login: provider_username) }
+  let(:provider_repo) do
+    OpenStruct.new(
+      name: 'vim',
+      full_name: "#{provider_username}/vim",
+      owner: OpenStruct.new(login: provider_username)
+    )
+  end
+
+  before do
+    stub_client(user: provider_user, repo: provider_repo)
+    assign_session_token
+  end
+
+  context "when the repository owner is the Gitea user" do
+    context "when the Gitea user and GitLab user's usernames match" do
+      it "takes the current user's namespace" do
+        expect(Gitlab::GithubImport::ProjectCreator).
+          to receive(:new).with(provider_repo, provider_repo.name, user.namespace, user, access_params, type: provider).
+            and_return(double(execute: true))
+
+        post :create, format: :js
+      end
+    end
+
+    context "when the Gitea user and GitLab user's usernames don't match" do
+      let(:provider_username) { "someone_else" }
+
+      it "takes the current user's namespace" do
+        expect(Gitlab::GithubImport::ProjectCreator).
+          to receive(:new).with(provider_repo, provider_repo.name, user.namespace, user, access_params, type: provider).
+            and_return(double(execute: true))
+
+        post :create, format: :js
+      end
+    end
+  end
+
+  context "when the repository owner is not the Gitea user" do
+    let(:other_username) { "someone_else" }
+
+    before do
+      provider_repo.owner = OpenStruct.new(login: other_username)
+      assign_session_token
+    end
+
+    context "when a namespace with the Gitea user's username already exists" do
+      let!(:existing_namespace) { create(:namespace, name: other_username, owner: user) }
+
+      context "when the namespace is owned by the GitLab user" do
+        it "takes the existing namespace" do
+          expect(Gitlab::GithubImport::ProjectCreator).
+            to receive(:new).with(provider_repo, provider_repo.name, existing_namespace, user, access_params, type: provider).
+              and_return(double(execute: true))
+
+          post :create, format: :js
+        end
+      end
+
+      context "when the namespace is not owned by the GitLab user" do
+        before do
+          existing_namespace.owner = create(:user)
+          existing_namespace.save
+        end
+
+        it "creates a project using user's namespace" do
+          expect(Gitlab::GithubImport::ProjectCreator).
+            to receive(:new).with(provider_repo, provider_repo.name, user.namespace, user, access_params, type: provider).
+              and_return(double(execute: true))
+
+          post :create, format: :js
+        end
+      end
+    end
+
+    context "when a namespace with the Gitea user's username doesn't exist" do
+      context "when current user can create namespaces" do
+        it "creates the namespace" do
+          expect(Gitlab::GithubImport::ProjectCreator).
+            to receive(:new).and_return(double(execute: true))
+
+          expect { post :create, target_namespace: provider_repo.name, format: :js }.to change(Namespace, :count).by(1)
+        end
+
+        it "takes the new namespace" do
+          expect(Gitlab::GithubImport::ProjectCreator).
+            to receive(:new).with(provider_repo, provider_repo.name, an_instance_of(Group), user, access_params, type: provider).
+            and_return(double(execute: true))
+
+          post :create, target_namespace: provider_repo.name, format: :js
+        end
+      end
+
+      context "when current user can't create namespaces" do
+        before do
+          user.update_attribute(:can_create_group, false)
+        end
+
+        it "doesn't create the namespace" do
+          expect(Gitlab::GithubImport::ProjectCreator).
+            to receive(:new).and_return(double(execute: true))
+
+          expect { post :create, format: :js }.not_to change(Namespace, :count)
+        end
+
+        it "takes the current user's namespace" do
+          expect(Gitlab::GithubImport::ProjectCreator).
+            to receive(:new).with(provider_repo, provider_repo.name, user.namespace, user, access_params, type: provider).
+            and_return(double(execute: true))
+
+          post :create, format: :js
+        end
+      end
+    end
+
+    context 'user has chosen a namespace and name for the project' do
+      let(:test_namespace) { create(:namespace, name: 'test_namespace', owner: user) }
+      let(:test_name) { 'test_name' }
+
+      it 'takes the selected namespace and name' do
+        expect(Gitlab::GithubImport::ProjectCreator).
+          to receive(:new).with(provider_repo, test_name, test_namespace, user, access_params, type: provider).
+            and_return(double(execute: true))
+
+        post :create, { target_namespace: test_namespace.name, new_name: test_name, format: :js }
+      end
+
+      it 'takes the selected name and default namespace' do
+        expect(Gitlab::GithubImport::ProjectCreator).
+          to receive(:new).with(provider_repo, test_name, user.namespace, user, access_params, type: provider).
+            and_return(double(execute: true))
+
+        post :create, { new_name: test_name, format: :js }
+      end
+    end
+  end
+end