Add CI job script node in new config processor

lib/gitlab/ci/config/node/job.rb

@@ -15,13 +15,16 @@ module Gitlab
           node :before_script, Script,
             description: 'Global before script overridden in this job.'
 
+          node :script, JobScript,
+            description: 'Commands that will be executed in this job.'
+
           node :stage, Stage,
             description: 'Pipeline stage this job will be executed into.'
 
           node :type, Stage,
             description: 'Deprecated: stage this job will be executed into.'
 
-          helpers :before_script, :stage, :type
+          helpers :before_script, :script, :stage, :type
 
           def value
             raise InvalidError unless valid?
@@ -36,8 +39,9 @@ module Gitlab
           private
 
           def to_hash
-            { before_script: before_script,
-              stage: stage }
+            { before_script: before_script_value,
+              script: script_value,
+              stage: stage_value }
           end
 
           def compose!

lib/gitlab/ci/config/node/job_script.rb

@@ -0,0 +1,31 @@
+module Gitlab
+  module Ci
+    class Config
+      module Node
+        ##
+        # Entry that represents a job script.
+        #
+        class JobScript < Entry
+          include Validatable
+
+          validations do
+            include LegacyValidationHelpers
+
+            validate :string_or_array_of_strings
+
+            def string_or_array_of_strings
+              unless validate_string(config) || validate_array_of_strings(config)
+                errors.add(:config,
+                           'should be a string or an array of strings')
+              end
+            end
+          end
+
+          def value
+            [@config].flatten
+          end
+        end
+      end
+    end
+  end
+end

spec/lib/gitlab/ci/config/node/global_spec.rb

@@ -129,8 +129,8 @@ describe Gitlab::Ci::Config::Node::Global do
         describe '#jobs' do
           it 'returns jobs configuration' do
             expect(global.jobs)
-              .to eq(rspec: { script: 'rspec', stage: 'test' },
-                     spinach: { script: 'spinach', stage: 'test' })
+              .to eq(rspec: { script: %w[rspec], stage: 'test' },
+                     spinach: { script: %w[spinach], stage: 'test' })
           end
         end
       end

spec/lib/gitlab/ci/config/node/job_script_spec.rb

@@ -0,0 +1,49 @@
+require 'spec_helper'
+
+describe Gitlab::Ci::Config::Node::JobScript do
+  let(:entry) { described_class.new(config) }
+
+  context 'when entry config value is an array' do
+    let(:config) { ['ls', 'pwd'] }
+
+    describe '#value' do
+      it 'returns array of strings' do
+        expect(entry.value).to eq config
+      end
+    end
+
+    describe '#errors' do
+      it 'does not append errors' do
+        expect(entry.errors).to be_empty
+      end
+    end
+  end
+
+  context 'when entry config value is a string' do
+    let(:config) { 'ls' }
+
+    describe '#value' do
+      it 'returns array with single element' do
+        expect(entry.value).to eq ['ls']
+      end
+    end
+
+    describe '#valid?' do
+      it 'is valid' do
+        expect(entry).to be_valid
+      end
+    end
+  end
+
+  context 'when entry value is not valid' do
+    let(:config) { 1 }
+
+    describe '#errors' do
+      it 'saves errors' do
+        expect(entry.errors)
+          .to include 'job script config should be a ' \
+                      'string or an array of strings'
+      end
+    end
+  end
+end

spec/lib/gitlab/ci/config/node/job_spec.rb

@@ -54,7 +54,7 @@ describe Gitlab::Ci::Config::Node::Job do
       it 'returns correct value' do
         expect(entry.value)
           .to eq(before_script: %w[ls pwd],
-                 script: 'rspec',
+                 script: %w[rspec],
                  stage: 'test')
       end
     end

spec/lib/gitlab/ci/config/node/jobs_spec.rb

@@ -62,8 +62,8 @@ describe Gitlab::Ci::Config::Node::Jobs do
     describe '#value' do
       it 'returns key value' do
         expect(entry.value)
-          .to eq(rspec: { script: 'rspec', stage: 'test' },
-                 spinach: { script: 'spinach', stage: 'test' })
+          .to eq(rspec: { script: %w[rspec], stage: 'test' },
+                 spinach: { script: %w[spinach], stage: 'test' })
       end
     end