refactor(tests): clean up notes_spec shared examples after #6927 (#6939)

Follow-up to the shared-examples extraction. Scope shared_examples to
this describe block (drop the RSpec. prefix that registered them
globally and made the generic names "create"/"edit"/"update"/"delete"
collide-prone), document the implicit let(:user) contract callers must
satisfy, fix the "belongs for volunteer" typo regression, normalize
expect { } to expect do…end for consistency with the new code, hoist
the repeated let(:organization), and standardize context names to use
articles ("as an admin"/"as a supervisor"/"as a volunteer").

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: compwron

spec/requests/notes_spec.rb

@@ -1,9 +1,10 @@
 require "rails_helper"
 
 RSpec.describe "/volunteers/notes", type: :request do
-  RSpec.shared_examples "create" do
-    let(:organization) { create(:casa_org) }
+  let(:organization) { create(:casa_org) }
 
+  shared_examples "create" do
+    # Caller must define: let(:user)
     context "when in the same organization" do
       it "can create a note for volunteer" do
         volunteer = create(:volunteer, :with_assigned_supervisor, casa_org: organization)
@@ -33,13 +34,12 @@
     end
   end
 
-  RSpec.shared_examples "edit" do
-    let(:organization) { create(:casa_org) }
-
+  shared_examples "edit" do
+    # Caller must define: let(:user)
     context "when in the same organization" do
       let(:volunteer) { create(:volunteer, :with_assigned_supervisor, casa_org: organization) }
 
-      it "is successful if note belongs for volunteer" do
+      it "is successful if note belongs to volunteer" do
         note = create(:note, notable: volunteer)
 
         sign_in user
@@ -73,9 +73,8 @@
     end
   end
 
-  RSpec.shared_examples "update" do
-    let(:organization) { create(:casa_org) }
-
+  shared_examples "update" do
+    # Caller must define: let(:user)
     context "when in the same organization" do
       it "updates note and redirects to edit volunteer page" do
         volunteer = create(:volunteer, :with_assigned_supervisor, casa_org: organization)
@@ -104,9 +103,8 @@
     end
   end
 
-  RSpec.shared_examples "delete" do
-    let(:organization) { create(:casa_org) }
-
+  shared_examples "delete" do
+    # Caller must define: let(:user)
     context "when in the same organization" do
       it "can delete notes about a volunteer" do
         volunteer = create(:volunteer, :with_assigned_supervisor, casa_org: organization)
@@ -138,7 +136,7 @@
   end
 
   describe "POST /create" do
-    context "when logged in as admin" do
+    context "when logged in as an admin" do
       it_behaves_like "create" do
         let(:user) { create(:casa_admin, casa_org: organization) }
       end
@@ -150,37 +148,35 @@
       end
     end
 
-    context "when logged in as volunteer" do
+    context "when logged in as a volunteer" do
       it "cannot create a note" do
-        organization = create(:casa_org)
         volunteer = create(:volunteer, :with_assigned_supervisor, casa_org: organization)
 
         sign_in volunteer
-        expect {
+        expect do
           post volunteer_notes_path(volunteer), params: {note: {content: "Very nice!"}}
-        }.not_to change(Note, :count)
+        end.not_to change(Note, :count)
         expect(response).to redirect_to root_path
       end
     end
   end
 
   describe "GET /edit" do
-    context "when logged in as admin" do
+    context "when logged in as an admin" do
       it_behaves_like "edit" do
         let(:user) { create(:casa_admin, casa_org: organization) }
       end
     end
 
-    context "when logged in as supervisor" do
+    context "when logged in as a supervisor" do
       it_behaves_like "edit" do
         let(:user) { create(:supervisor, casa_org: organization) }
       end
     end
 
-    context "when logged in as volunteer" do
+    context "when logged in as a volunteer" do
       context "when note belongs to volunteer" do
         it "redirects to root path" do
-          organization = create(:casa_org)
           volunteer = create(:volunteer, :with_assigned_supervisor, casa_org: organization)
           note = create(:note, notable: volunteer)
 
@@ -209,7 +205,6 @@
     context "when logged in as a volunteer" do
       context "when updating note belonging to volunteer" do
         it "does not update note and redirects to root path" do
-          organization = create(:casa_org)
           volunteer = create(:volunteer, casa_org: organization)
           note = create(:note, notable: volunteer, content: "Good job.")
 
@@ -242,9 +237,9 @@
         note = create(:note, notable: volunteer)
 
         sign_in volunteer
-        expect {
+        expect do
           delete volunteer_note_path(volunteer, note)
-        }.not_to change(Note, :count)
+        end.not_to change(Note, :count)
         expect(response).to redirect_to root_path
       end
     end