Add response.content_type checks for JSON to api/v1 request specs (#31981)

spec/requests/api/v1/admin/canonical_email_blocks_spec.rb

@@ -24,6 +24,8 @@ RSpec.describe 'Canonical Email Blocks' do
       subject
 
       expect(response).to have_http_status(200)
+      expect(response.content_type)
+        .to start_with('application/json')
     end
 
     context 'when there is no canonical email block' do
@@ -96,6 +98,8 @@ RSpec.describe 'Canonical Email Blocks' do
         subject
 
         expect(response).to have_http_status(200)
+        expect(response.content_type)
+          .to start_with('application/json')
         expect(response.parsed_body)
           .to include(
             id: eq(canonical_email_block.id.to_s),
@@ -109,6 +113,8 @@ RSpec.describe 'Canonical Email Blocks' do
         get '/api/v1/admin/canonical_email_blocks/-1', headers: headers
 
         expect(response).to have_http_status(404)
+        expect(response.content_type)
+          .to start_with('application/json')
       end
     end
   end
@@ -131,6 +137,8 @@ RSpec.describe 'Canonical Email Blocks' do
         subject
 
         expect(response).to have_http_status(400)
+        expect(response.content_type)
+          .to start_with('application/json')
       end
     end
 
@@ -142,6 +150,8 @@ RSpec.describe 'Canonical Email Blocks' do
           subject
 
           expect(response).to have_http_status(200)
+          expect(response.content_type)
+            .to start_with('application/json')
           expect(response.parsed_body.first[:canonical_email_hash]).to eq(canonical_email_block.canonical_email_hash)
         end
       end
@@ -151,6 +161,8 @@ RSpec.describe 'Canonical Email Blocks' do
           subject
 
           expect(response).to have_http_status(200)
+          expect(response.content_type)
+            .to start_with('application/json')
           expect(response.parsed_body).to be_empty
         end
       end
@@ -173,6 +185,8 @@ RSpec.describe 'Canonical Email Blocks' do
       subject
 
       expect(response).to have_http_status(200)
+      expect(response.content_type)
+        .to start_with('application/json')
       expect(response.parsed_body[:canonical_email_hash]).to eq(canonical_email_block.canonical_email_hash)
     end
 
@@ -183,6 +197,8 @@ RSpec.describe 'Canonical Email Blocks' do
         subject
 
         expect(response).to have_http_status(422)
+        expect(response.content_type)
+          .to start_with('application/json')
       end
     end
 
@@ -193,6 +209,8 @@ RSpec.describe 'Canonical Email Blocks' do
         subject
 
         expect(response).to have_http_status(200)
+        expect(response.content_type)
+          .to start_with('application/json')
         expect(response.parsed_body[:canonical_email_hash]).to eq(params[:canonical_email_hash])
       end
     end
@@ -204,6 +222,8 @@ RSpec.describe 'Canonical Email Blocks' do
         subject
 
         expect(response).to have_http_status(200)
+        expect(response.content_type)
+          .to start_with('application/json')
         expect(response.parsed_body[:canonical_email_hash]).to eq(canonical_email_block.canonical_email_hash)
       end
     end
@@ -217,6 +237,8 @@ RSpec.describe 'Canonical Email Blocks' do
         subject
 
         expect(response).to have_http_status(422)
+        expect(response.content_type)
+          .to start_with('application/json')
       end
     end
   end
@@ -237,6 +259,8 @@ RSpec.describe 'Canonical Email Blocks' do
       subject
 
       expect(response).to have_http_status(200)
+      expect(response.content_type)
+        .to start_with('application/json')
       expect(CanonicalEmailBlock.find_by(id: canonical_email_block.id)).to be_nil
     end
 
@@ -245,6 +269,8 @@ RSpec.describe 'Canonical Email Blocks' do
         delete '/api/v1/admin/canonical_email_blocks/0', headers: headers
 
         expect(response).to have_http_status(404)
+        expect(response.content_type)
+          .to start_with('application/json')
       end
     end
   end