1 files changed, 122 insertions, 0 deletions
diff --git a/spec/requests/api/graphql/project/branch_rules_spec.rb b/spec/requests/api/graphql/project/branch_rules_spec.rb
new file mode 100644
index 00000000000..70fb37941e2
--- /dev/null
+++ b/spec/requests/api/graphql/project/branch_rules_spec.rb
@@ -0,0 +1,122 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'getting list of branch rules for a project' do
+  include GraphqlHelpers
+
+  let_it_be(:project) { create(:project, :repository, :public) }
+  let_it_be(:current_user) { create(:user) }
+  let_it_be(:branch_name_a) { 'branch_name_a' }
+  let_it_be(:branch_name_b) { 'wildcard-*' }
+  let_it_be(:branch_rules) { [branch_rule_a, branch_rule_b] }
+
+  let_it_be(:branch_rule_a) do
+    create(:protected_branch, project: project, name: branch_name_a)
+  end
+
+  let_it_be(:branch_rule_b) do
+    create(:protected_branch, project: project, name: branch_name_b)
+  end
+
+  let(:branch_rules_data) { graphql_data_at('project', 'branchRules', 'edges') }
+  let(:variables) { { path: project.full_path } }
+
+  let(:fields) do
+    <<~QUERY
+    pageInfo {
+      hasNextPage
+      hasPreviousPage
+    }
+    edges {
+      cursor
+      node {
+        #{all_graphql_fields_for('branch_rules'.classify)}
+      }
+    }
+    QUERY
+  end
+
+  let(:query) do
+    <<~GQL
+    query($path: ID!, $n: Int, $cursor: String) {
+      project(fullPath: $path) {
+        branchRules(first: $n, after: $cursor) { #{fields} }
+      }
+    }
+    GQL
+  end
+
+  context 'when the user does not have read_protected_branch abilities' do
+    before do
+      project.add_guest(current_user)
+      post_graphql(query, current_user: current_user, variables: variables)
+    end
+
+    it_behaves_like 'a working graphql query'
+
+    it { expect(branch_rules_data).to be_empty }
+  end
+
+  context 'when the user does have read_protected_branch abilities' do
+    before do
+      project.add_maintainer(current_user)
+      post_graphql(query, current_user: current_user, variables: variables)
+    end
+
+    it_behaves_like 'a working graphql query'
+
+    it 'includes a name' do
+      expect(branch_rules_data.dig(0, 'node', 'name')).to be_present
+    end
+
+    it 'includes created_at and updated_at' do
+      expect(branch_rules_data.dig(0, 'node', 'createdAt')).to be_present
+      expect(branch_rules_data.dig(1, 'node', 'updatedAt')).to be_present
+    end
+
+    context 'when limiting the number of results' do
+      let(:branch_rule_limit) { 1 }
+      let(:variables) { { path: project.full_path, n: branch_rule_limit } }
+      let(:next_variables) do
+        { path: project.full_path, n: branch_rule_limit, cursor: last_cursor }
+      end
+
+      it_behaves_like 'a working graphql query' do
+        it 'only returns N branch_rules' do
+          expect(branch_rules_data.size).to eq(branch_rule_limit)
+          expect(has_next_page).to be_truthy
+          expect(has_prev_page).to be_falsey
+          post_graphql(query, current_user: current_user, variables: next_variables)
+          expect(branch_rules_data.size).to eq(branch_rule_limit)
+          expect(has_next_page).to be_falsey
+          expect(has_prev_page).to be_truthy
+        end
+      end
+
+      context 'when no limit is provided' do
+        let(:branch_rule_limit) { nil }
+
+        it 'returns all branch_rules' do
+          expect(branch_rules_data.size).to eq(branch_rules.size)
+        end
+      end
+    end
+  end
+
+  def pagination_info
+    graphql_data_at('project', 'branchRules', 'pageInfo')
+  end
+
+  def has_next_page
+    pagination_info['hasNextPage']
+  end
+
+  def has_prev_page
+    pagination_info['hasPreviousPage']
+  end
+
+  def last_cursor
+    branch_rules_data.last['cursor']
+  end
+end