Refactor existing modeling tests to follow more RSpec-y syntax

I'm learning how to group things and stuff!

spec/models/pet_spec.rb

@@ -9,33 +9,38 @@ RSpec.describe Pet, type: :model do
     context "for thyassa, the Purple Chia" do
       subject(:pet) { Pet.load "thyassa" }
 
-      it "is named thyassa" do
-        expect(pet.name).to eq("thyassa")
+      it("is named thyassa") { expect(pet.name).to eq("thyassa") }
+      it("has no items") { expect(pet.items).to be_empty }
+
+      describe "its pet type" do
+        subject(:pet_type) { pet.pet_type }
+
+        it("is new and unsaved") { should be_new_record }
+        it("is Purple") { expect(pet_type.color).to eq Color.find_by_name!("purple") }
+        it("is a Chia") { expect(pet_type.species).to eq Species.find_by_name!("chia") }
+        it("has the standard Chia body") { expect(pet_type.body_id).to eq 212 }
+        it("uses the pet's image hash") { expect(pet_type.image_hash).to eq "m:thyass" }
+
+        it("is saved when saving the pet") do
+          expect { pet.save! }.to change { pet_type.persisted? }.from(false).to(true)
+        end
       end
 
-      it "has no items" do
-        expect(pet.items).to be_empty
+      describe "its pet state" do
+        subject(:pet_state) { pet.pet_state }
+
+        it("is new and unsaved") { should be_new_record }
+        it("belongs to the pet's pet type") { expect(pet_state.pet_type).to eq pet.pet_type }
+        it("isn't labeled yet") { expect(pet_state.pose).to eq "UNKNOWN" }
+
+        it "is saved when saving the pet" do
+          expect { pet.save! }.to change { pet_state.persisted? }.from(false).to(true)
         end
 
-      it "has a new Purple Chia pet type" do
-        expect(pet.pet_type.new_record?).to be true
-        expect(pet.pet_type.color).to eq Color.find_by_name!("purple")
-        expect(pet.pet_type.species).to eq Species.find_by_name!("chia")
-        expect(pet.pet_type.body_id).to eq 212
-        expect(pet.pet_type.image_hash).to eq "m:thyass"
-      end
-
-      it "has a new unlabeled Purple Chia pet state" do
-        expect(pet.pet_state.new_record?).to be true
-        expect(pet.pet_state.color).to eq Color.find_by_name!("purple")
-        expect(pet.pet_state.species).to eq Species.find_by_name!("chia")
-        expect(pet.pet_state.pose).to eq "UNKNOWN"
-      end
-
-      it "has new assets for the biology layers" do
+        it "has new biology assets" do
           pet.save! # TODO: I wish this were set up before saving.
 
-        expect(pet.pet_state.swf_assets).to contain_exactly(
+          expect(pet_state.swf_assets).to contain_exactly(
             a_record_matching(
               type: "biology",
               remote_id: 10083,
@@ -70,13 +75,6 @@ RSpec.describe Pet, type: :model do
             )
           )
         end
-
-      it "saves the pet type when saved" do
-        expect { pet.save! }.to change { pet.pet_type.persisted? }.from(false).to(true)
-      end
-
-      it "saves the pet state when saved" do
-        expect { pet.save! }.to change { pet.pet_state.persisted? }.from(false).to(true)
       end
 
       context "when modeled a second time" do