Tests compare cluster's counter

Computes counter in brackets when "same" or "diff" filter used

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1469111

spec/controllers/application_controller/compare_spec.rb

@@ -14,3 +14,142 @@
     end
   end
 end
+
+describe EmsClusterController do
+
+  # view = MiqCompare originally
+  # section = Hash[:name => :_model_]
+  # fields = [{:name => :name, :header => "Name"},
+  #           {:name => 'hosts.size', :header => 'Number of hosts'},
+  #           {:name => 'vms.size', :header => 'Number of vms'}
+  # ]
+  # view.ids = [1,2]
+  # view.results = {1 => {:_model_ => {:name => {:_value_ => "Cluster1"}, :"hosts.size" => {:_value_ => 1}, :"vms_size" => {:_value_ => 1} } },
+  #                 2 => {:_model_ => {:name => {:_value_ => "Cluster2"}, :"hosts.size" => {:_value_ => 1}, :"vms_size" => {:_value_ => 1} } }
+  # }
+  class self::TestView
+    attr_accessor :ids, :results
+    def initialize
+      @ids = []
+      @results = []
+    end
+  end
+
+  let(:view) { self.class::TestView.new }
+
+  context "#compare_cluster_fields" do
+    let(:section) { {:name => :_model_} }
+    let(:fields) { {} }
+
+    let(:sample_values) do
+      # name of fields has to be same
+      {
+        1 => [{:name => :field1, :value => 1},
+              {:name => :field2, :value => 20},
+              {:name => :field3, :value => 30},
+              {:name => :field4, :value => 40},
+              {:name => :field5, :value => 'string 1'},
+              {:name => :field6, :value => 'string 2'}],
+
+        2 => [{:name => :field1, :value => 10},
+              {:name => :field2, :value => 20},
+              {:name => :field3, :value => 'xx'},
+              {:name => :field4, :value => nil},
+              {:name => :field5, :value => 'string 1'},
+              {:name => :field6, :value => 'other string'}]
+      }
+    end
+
+    before(:each) do
+      controller.instance_variable_set(:@compressed, false)
+      controller.instance_variable_set(:@exists_mode, false)
+
+      view.ids = [1, 2]
+      view.results = {}
+      @fields = []
+      init_fields_and_results(sample_values)
+
+    end
+    # simulation of fields param
+    def fill_fields(rows)
+      rows.each do |row|
+        @fields << { :name => row[:name], :header => row[:name] }
+      end
+    end
+
+    # simulation of view.results param
+    def fill_view_results(clusters)
+      clusters.each_pair do |id, rows|
+        view.results[id] ||= {:_model_ => {:name => {:_value_ => "Cluster#{id}"}}}
+
+        rows.each do |row|
+          view.results[id][:_model_][row[:name].to_sym] = {:_value_ => row[:value]}
+        end
+      end
+    end
+
+    def init_fields_and_results(clusters)
+      fill_fields(clusters[1])
+
+      fill_view_results(clusters)
+    end
+
+    def get_same_and_diff_totals
+      totals = {}
+      totals[:diff_fields_count] = 0
+      totals[:same_fields_count] = 0
+
+      @fields.each do |field|
+
+        # Get reference value from first cluster
+        ref_value = sample_values[1].select do |row|
+          row[:name] == field[:name]
+        end
+
+        next if ref_value.blank?
+        ref_value = ref_value.first[:value]
+
+        # Compare with same field in all clusters
+        same = true
+        sample_values.each_value do |cluster_values|
+          cluster_values.each do |cluster_value|
+            if cluster_value[:name] == field[:name]
+              same = false if cluster_value[:value] != ref_value
+            end
+          end
+        end
+        if same
+          totals[:same_fields_count] += 1
+        else
+          totals[:diff_fields_count] += 1
+        end
+      end
+
+      totals
+    end
+
+
+    it "sets total fields in section with 'All attributes' button to number of fields" do
+      controller.instance_variable_set(:@sb, {:miq_temp_params => 'all'})
+
+      all_fields_count = sample_values[1].size
+
+      expect(controller.send(:comp_section_fields_total, view, section, @fields)).to eq(all_fields_count)
+    end
+
+    it "sets total fields in section with 'Attributes with different values' button to number of fields where clusters differs" do
+      controller.instance_variable_set(:@sb, {:miq_temp_params => 'different'})
+
+      diff_fields_count = get_same_and_diff_totals[:diff_fields_count]
+      expect(controller.send(:comp_section_fields_total, view, section, @fields)).to eq(diff_fields_count)
+
+    end
+
+    it "sets total fields in section with 'Attributes with same values' button to number of fields with same values among clusters" do
+      controller.instance_variable_set(:@sb, :miq_temp_params => 'same')
+
+      same_fields_count = get_same_and_diff_totals[:same_fields_count]
+      expect(controller.send(:comp_section_fields_total, view, section, @fields)).to eq(same_fields_count)
+    end
+  end
+end