Move NilPerson to own file

3 files changed, 34 insertions, 30 deletions

diff --git a/lib/nil_person.rb b/lib/nil_person.rb
new file mode 100644
index 0000000..30a175f
--- /dev/null
+++ b/lib/nil_person.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+class NilPerson
+  def name
+    nil
+  end
+
+  def father
+    self
+  end
+
+  def mother
+    self
+  end
+
+  def gender
+    nil
+  end
+
+  def ==(other)
+    other.is_a?(NilPerson)
+  end
+
+  def eql?(other)
+    self == other
+  end
+
+  def to_s
+    ''
+  end
+end
diff --git a/lib/person.rb b/lib/person.rb
index a40efbe..8571754 100644
--- a/lib/person.rb
+++ b/lib/person.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require_relative 'nil_person'
+
 class Person
   attr_accessor :name, :gender, :spouse
 
@@ -25,33 +27,3 @@ class Person
     "#{name} (#{gender})"
   end
 end
-
-class NilPerson
-  def name
-    nil
-  end
-
-  def father
-    self
-  end
-
-  def mother
-    self
-  end
-
-  def gender
-    nil
-  end
-
-  def ==(other)
-    other.is_a?(NilPerson)
-  end
-
-  def eql?(other)
-    self == other
-  end
-
-  def to_s
-    ''
-  end
-end
diff --git a/spec/family_spec.rb b/spec/family_spec.rb
index 7247648..615bbc6 100644
--- a/spec/family_spec.rb
+++ b/spec/family_spec.rb
@@ -2,6 +2,7 @@
 
 require_relative '../lib/family'
 require_relative '../lib/person'
+require_relative '../lib/nil_person'
 require_relative '../lib/gender'
 
 RSpec.describe Family do