Add support for cadetship environment variables

lib/knapsack_pro.rb

@@ -18,6 +18,7 @@
 require_relative 'knapsack_pro/config/ci/buildkite'
 require_relative 'knapsack_pro/config/ci/travis'
 require_relative 'knapsack_pro/config/ci/snap_ci'
+require_relative 'knapsack_pro/config/ci/codeship'
 require_relative 'knapsack_pro/config/env'
 require_relative 'knapsack_pro/config/env_generator'
 require_relative 'knapsack_pro/client/api/action'

lib/knapsack_pro/config/ci/codeship.rb

@@ -0,0 +1,31 @@
+module KnapsackPro
+  module Config
+    module CI
+      class Codeship < Base
+        def node_total
+          # not provided
+        end
+
+        def node_index
+          # not provided
+        end
+
+        def node_build_id
+          ENV['CI_BUILD_NUMBER']
+        end
+
+        def commit_hash
+          ENV['CI_COMMIT_ID']
+        end
+
+        def branch
+          ENV['CI_BRANCH']
+        end
+
+        def project_dir
+          # not provided
+        end
+      end
+    end
+  end
+end

spec/knapsack_pro/config/ci/codeship_spec.rb

@@ -0,0 +1,66 @@
+describe KnapsackPro::Config::CI::Codeship do
+  let(:env) { {} }
+
+  before do
+    stub_const('ENV', env)
+  end
+
+  it { should be_kind_of KnapsackPro::Config::CI::Base }
+
+  describe '#node_total' do
+    subject { described_class.new.node_total }
+
+    it { should be nil }
+  end
+
+  describe '#node_index' do
+    subject { described_class.new.node_index }
+
+    it { should be nil }
+  end
+
+  describe '#node_build_id' do
+    subject { described_class.new.node_build_id }
+
+    context 'when environment exists' do
+      let(:env) { { 'CI_BUILD_NUMBER' => 2013 } }
+      it { should eql 2013 }
+    end
+
+    context "when environment doesn't exist" do
+      it { should be nil }
+    end
+  end
+
+  describe '#commit_hash' do
+    subject { described_class.new.commit_hash }
+
+    context 'when environment exists' do
+      let(:env) { { 'CI_COMMIT_ID' => 'a22aec3ee5d334fd658da35646b42bc5' } }
+      it { should eql 'a22aec3ee5d334fd658da35646b42bc5' }
+    end
+
+    context "when environment doesn't exist" do
+      it { should be nil }
+    end
+  end
+
+  describe '#branch' do
+    subject { described_class.new.branch }
+
+    context 'when environment exists' do
+      let(:env) { { 'CI_BRANCH' => 'master' } }
+      it { should eql 'master' }
+    end
+
+    context "when environment doesn't exist" do
+      it { should be nil }
+    end
+  end
+
+  describe '#project_dir' do
+    subject { described_class.new.project_dir }
+
+    it { should be nil }
+  end
+end