Define FamilyTree

- Implemented basic FamilyTree which will hold all the people and perform actions on them
- Updated the FamilyTree Manager to create an instance of the FamilyTree
- Updated the FamilyTreeManager to call the add_child and query_hierarchy methods on the FamilyTree
- Update tests

1 files changed, 12 insertions, 2 deletions

diff --git a/spec/family_tree_manager_spec.rb b/spec/family_tree_manager_spec.rb
index d3d21f1..a1161ae 100644
--- a/spec/family_tree_manager_spec.rb
+++ b/spec/family_tree_manager_spec.rb
@@ -4,10 +4,15 @@ require_relative '../lib/family_tree_manager'
 
 RSpec.describe FamilyTreeManager do
   let(:family_tree_manager) { FamilyTreeManager.instance }
+  let(:family_tree) { instance_double(FamilyTree) }
+
+  before do
+    family_tree_manager.instance_variable_set(:@family_tree, family_tree)
+  end
 
   describe '#initialize' do
-    it 'initialises the family_members hash' do
-      expect(family_tree_manager.instance_variable_get(:@family_members)).to eq({})
+    it 'creates a family tree' do
+      expect(family_tree_manager.instance_variable_get(:@family_tree)).to eq(family_tree)
     end
   end
 
@@ -15,6 +20,11 @@ RSpec.describe FamilyTreeManager do
     it 'is defined' do
       expect(family_tree_manager).to respond_to(:add_child)
     end
+
+    it 'calls add_child on the family tree' do
+      expect(family_tree).to receive(:add_child).with('Child', 'Mother', 'Father')
+      family_tree_manager.add_child('Child', 'Mother', 'Father')
+    end
   end
 
   describe '#query_hierarchy' do