1 files changed, 71 insertions, 0 deletions
diff --git a/spec/family_spec.rb b/spec/family_spec.rb
new file mode 100644
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+++ b/spec/family_spec.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+require_relative '../lib/family'
+require_relative '../lib/person'
+require_relative '../lib/gender'
+
+RSpec.describe Family do
+  describe '#initialize' do
+    it 'creates a new family with a mother, father, and children' do
+      family = Family.new
+      expect(family.mother).to be_a(NilPerson)
+      expect(family.father).to be_a(NilPerson)
+      expect(family.children).to eq([])
+    end
+
+    it 'raises an error if the mother is not a female' do
+      jack = Person.new('Jack', Gender::MALE)
+
+      expect { Family.new(jack) }.to raise_error(ArgumentError).with_message('Mother must be female')
+    end
+
+    it 'raises an error if the father is not a male' do
+      jill = Person.new('Jill', Gender::FEMALE)
+
+      expect { Family.new(NilPerson.new, jill) }.to raise_error(ArgumentError).with_message('Father must be male')
+    end
+  end
+
+  describe 'assign_mother' do
+    it 'raises an error if the mother is not a female' do
+      family = Family.new
+      jack = Person.new('Jack', Gender::MALE)
+
+      expect { family.assign_mother(jack) }.to raise_error(ArgumentError).with_message('Mother must be female')
+    end
+  end
+
+  describe 'assign_father' do
+    it 'raises an error if the mother is not a female' do
+      family = Family.new
+      jill = Person.new('Jill', Gender::FEMALE)
+
+      expect { family.assign_father(jill) }.to raise_error(ArgumentError).with_message('Father must be male')
+    end
+  end
+
+  describe '#add_child' do
+    it 'adds a child to the family' do
+      family = Family.new
+      child = Person
+
+      family.add_child(child)
+      expect(family.children).to eq([child])
+    end
+  end
+
+  describe '#get_siblings' do
+    it 'returns all siblings of a person' do
+      family = Family.new
+      child1 = Person.new('Jack', Gender::MALE)
+      child2 = Person.new('Jill', Gender::FEMALE)
+      child3 = Person.new('Phil', Gender::MALE)
+
+      family.add_child(child1)
+      family.add_child(child2)
+      family.add_child(child3)
+
+      expect(family.get_siblings(child1)).to eq([child2, child3])
+    end
+  end
+end