AP-5220: Delete home address when applicant has no fixed address

Delete home address when applicant has said they have no fixed address. This
is most important when they have already entered an address, so it will now
be removed.

Updated wording in spec to be clearer

app/controllers/providers/home_address/statuses_controller.rb

@@ -12,11 +12,18 @@ def update
         @form = ::HomeAddress::StatusForm.new(form_params)
         @correspondence_address = applicant.address
 
+        delete_home_address if form_params[:no_fixed_residence].eql?("true")
+
         render :show unless save_continue_or_draft(@form)
       end
 
     private
 
+      def delete_home_address
+        applicant.home_address = nil
+        applicant.save!
+      end
+
       def applicant
         legal_aid_application.applicant
       end

spec/requests/providers/home_address/statuses_controller_spec.rb

@@ -42,11 +42,11 @@
       it_behaves_like "a provider not authenticated"
     end
 
-    context "when yes chosen" do
-      let(:params) { { applicant: { no_fixed_residence: "true" } } }
+    context "when applicant does have a home address" do
+      let(:params) { { applicant: { no_fixed_residence: "false" } } }
 
       it "records the answer" do
-        expect { patch_request }.to change { applicant.reload.no_fixed_residence }.from(nil).to(true)
+        expect { patch_request }.to change { applicant.reload.no_fixed_residence }.from(nil).to(false)
       end
 
       it "redirects to the next page" do
@@ -55,11 +55,16 @@
       end
     end
 
-    context "when no chosen" do
-      let(:params) { { applicant: { no_fixed_residence: "false" } } }
+    context "when applicant does not have a home address" do
+      let(:params) { { applicant: { no_fixed_residence: "true" } } }
 
       it "records the answer" do
-        expect { patch_request }.to change { applicant.reload.no_fixed_residence }.from(nil).to(false)
+        expect { patch_request }.to change { applicant.reload.no_fixed_residence }.from(nil).to(true)
+      end
+
+      it "deletes the home address" do
+        patch_request
+        expect(applicant.reload.home_address).to be_nil
       end
 
       it "redirects to the next page" do