Enable RSpec/NotToNot cop and auto-correct offenses

Also removes the note from the development/testing.md guide

3 files changed, 6 insertions, 6 deletions

diff --git a/spec/lib/container_registry/registry_spec.rb b/spec/lib/container_registry/registry_spec.rb
index 2638401ae6e..4f3f8b24fc4 100644
--- a/spec/lib/container_registry/registry_spec.rb
+++ b/spec/lib/container_registry/registry_spec.rb
@@ -10,7 +10,7 @@ describe ContainerRegistry::Registry do
   it { is_expected.to respond_to(:uri) }
   it { is_expected.to respond_to(:path) }
 
-  it { expect(subject.repository('test')).to_not be_nil }
+  it { expect(subject.repository('test')).not_to be_nil }
 
   context '#path' do
     subject { registry.path }
diff --git a/spec/lib/container_registry/repository_spec.rb b/spec/lib/container_registry/repository_spec.rb
index e6d66b11e4e..279709521c9 100644
--- a/spec/lib/container_registry/repository_spec.rb
+++ b/spec/lib/container_registry/repository_spec.rb
@@ -6,7 +6,7 @@ describe ContainerRegistry::Repository do
 
   it { expect(repository).to respond_to(:registry) }
   it { expect(repository).to delegate_method(:client).to(:registry) }
-  it { expect(repository.tag('test')).to_not be_nil }
+  it { expect(repository.tag('test')).not_to be_nil }
 
   context '#path' do
     subject { repository.path }
@@ -27,7 +27,7 @@ describe ContainerRegistry::Repository do
     context '#manifest' do
       subject { repository.manifest }
 
-      it { is_expected.to_not be_nil }
+      it { is_expected.not_to be_nil }
     end
 
     context '#valid?' do
@@ -39,7 +39,7 @@ describe ContainerRegistry::Repository do
     context '#tags' do
       subject { repository.tags }
 
-      it { is_expected.to_not be_empty }
+      it { is_expected.not_to be_empty }
     end
   end
 
diff --git a/spec/lib/container_registry/tag_spec.rb b/spec/lib/container_registry/tag_spec.rb
index 12cf91127ed..858cb0bb134 100644
--- a/spec/lib/container_registry/tag_spec.rb
+++ b/spec/lib/container_registry/tag_spec.rb
@@ -50,13 +50,13 @@ describe ContainerRegistry::Tag do
       context '#config' do
         subject { tag.config }
 
-        it { is_expected.to_not be_nil }
+        it { is_expected.not_to be_nil }
       end
 
       context '#created_at' do
         subject { tag.created_at }
 
-        it { is_expected.to_not be_nil }
+        it { is_expected.not_to be_nil }
       end
     end
   end