Replace "can not" with "cannot" in error messages

This allows us to be more consistent and grammatically intuitive in our
errors.

[#172562539]

Author: belinda-liu

app/actions/buildpack_update.rb

@@ -28,7 +28,7 @@ def validation_error!(error, message)
         error!(%{Stack '#{message.stack}' does not exist})
       end
       if error.errors.on(:stack)&.include?(:buildpack_cant_change_stacks)
-        error!(%{Buildpack stack can not be changed})
+        error!(%{Buildpack stack cannot be changed})
       end
       if error.errors.on(:stack)&.include?(:unique)
         error!(%{Buildpack with name '#{error.model.name}' and an unassigned stack already exists})

app/controllers/v3/domains_controller.rb

@@ -122,7 +122,7 @@ def update_shared_orgs
 
     shared_orgs = verify_shared_organizations_guids!(message, domain.owning_organization_guid)
 
-    unprocessable!('Domains can not be shared with other organizations unless they are scoped to an organization.') unless domain.private?
+    unprocessable!('Domains cannot be shared with other organizations unless they are scoped to an organization.') unless domain.private?
 
     DomainUpdateSharedOrgs.update(domain: domain, shared_organizations: shared_orgs)
     render status: :ok, json: Presenters::V3::DomainSharedOrgsPresenter.new(domain, visible_org_guids: permission_queryer.readable_org_guids)

app/messages/domain_create_message.rb

@@ -74,7 +74,7 @@ def alpha_numeric
 
     def mutually_exclusive_organization_and_internal
       if requested?(:internal) && internal == true && requested?(:relationships)
-        errors.add(:base, 'Can not associate an internal domain with an organization')
+        errors.add(:base, 'Cannot associate an internal domain with an organization')
       end
     end
 

lib/cloud_controller/resource_pool.rb

@@ -74,7 +74,7 @@ def resource_sizes(resources)
   def copy(descriptor, destination)
     if !resource_known?(descriptor)
       logger.warn 'resource_pool.sync.failed', unknown_resource: descriptor, destination: destination
-      raise ArgumentError.new("Can not copy bits we do not have #{descriptor}")
+      raise ArgumentError.new("Cannot copy bits we do not have #{descriptor}")
     end
 
     logger.debug 'resource_pool.sync.start', resource: descriptor, destination: destination

spec/request/domains_spec.rb

@@ -1239,7 +1239,7 @@
       it 'returns a 422' do
         post "/v3/domains/#{shared_domain.guid}/relationships/shared_organizations", params.to_json, user_header
         expect(last_response.status).to eq(422)
-        expect(parsed_response['errors'][0]['detail']).to eq('Domains can not be shared with other organizations unless they are scoped to an organization.')
+        expect(parsed_response['errors'][0]['detail']).to eq('Domains cannot be shared with other organizations unless they are scoped to an organization.')
       end
     end
 

spec/unit/actions/buildpack_update_spec.rb

@@ -116,7 +116,7 @@ module VCAP::CloudController
             message = BuildpackUpdateMessage.new(stack: nil)
             expect {
               BuildpackUpdate.new.update(buildpack1, message)
-            }.to raise_error(BuildpackUpdate::Error, 'Buildpack stack can not be changed')
+            }.to raise_error(BuildpackUpdate::Error, 'Buildpack stack cannot be changed')
           end
         end
 

spec/unit/messages/domain_create_message_spec.rb

@@ -274,7 +274,7 @@ module VCAP::CloudController
 
         it 'should be invalid' do
           expect(subject).to_not be_valid
-          expect(subject.errors[:base]).to include('Can not associate an internal domain with an organization')
+          expect(subject.errors[:base]).to include('Cannot associate an internal domain with an organization')
         end
       end