Remove support for symbol job name in need

Removes the support for specifying a job in symbol format in need.

lib/gitlab/ci/config/entry/need.rb

@@ -5,17 +5,18 @@ module Gitlab
     class Config
       module Entry
         class Need < ::Gitlab::Config::Entry::Simplifiable
-          strategy :Pipeline, if: -> (config) { config.is_a?(String) || config.is_a?(Symbol) }
+          strategy :Pipeline, if: -> (config) { config.is_a?(String) }
 
           class Pipeline < ::Gitlab::Config::Entry::Node
             include ::Gitlab::Config::Entry::Validatable
 
             validations do
               validates :config, presence: true
+              validates :config, type: String
             end
 
             def self.matching?(config)
-              config.is_a?(String) || config.is_a?(Symbol)
+              config.is_a?(String)
             end
 
             def type

lib/gitlab/ci/config/entry/needs.rb

@@ -13,6 +13,12 @@ module Gitlab
           validations do
             validates :config, presence: true
 
+            validate do
+              unless config.is_a?(Hash) || config.is_a?(Array)
+                errors.add(:config, 'can only be a hash or an array')
+              end
+            end
+
             validate do
               [config].flatten.each do |need|
                 if Needs.find_type(need).nil?

lib/gitlab/ci/yaml_processor.rb

@@ -163,7 +163,7 @@ module Gitlab
 
         stage_index = @stages.index(job[:stage])
 
-        job[:needs][:pipeline].each do |need|
+        job.dig(:needs, :pipeline).each do |need|
           need_job_name = need[:name]
 
           raise ValidationError, "#{name} job: undefined need: #{need_job_name}" unless @jobs[need_job_name.to_sym]

spec/lib/gitlab/ci/config/entry/need_spec.rb

@@ -19,20 +19,6 @@ describe ::Gitlab::Ci::Config::Entry::Need do
     end
   end
 
-  context 'when job is specified as symbol' do
-    let(:config) { :job_name }
-
-    describe '#valid?' do
-      it { is_expected.to be_valid }
-    end
-
-    describe '#value' do
-      it 'returns job needs configuration' do
-        expect(need.value).to eq(name: :job_name)
-      end
-    end
-  end
-
   context 'when need is empty' do
     let(:config) { '' }
 

spec/lib/gitlab/ci/config/entry/needs_spec.rb

@@ -18,6 +18,21 @@ describe ::Gitlab::Ci::Config::Entry::Needs do
       end
     end
 
+    context 'when config value has wrong type' do
+      let(:config) { 123 }
+
+      describe '#valid?' do
+        it { is_expected.not_to be_valid }
+      end
+
+      describe '#errors' do
+        it 'returns error about incorrect type' do
+          expect(needs.errors)
+            .to include('needs config can only be a hash or an array')
+        end
+      end
+    end
+
     context 'when wrong needs type is used' do
       let(:config) { [123] }
 

spec/lib/gitlab/ci/yaml_processor_spec.rb

@@ -1305,12 +1305,6 @@ module Gitlab
           end
         end
 
-        context 'needs two builds defined as symbols' do
-          let(:needs) { [:build1, :build2] }
-
-          it { expect { subject }.not_to raise_error }
-        end
-
         context 'undefined need' do
           let(:needs) { ['undefined'] }