Add spec for CanonicalEmailBlock.matching_email scope (#35692)

spec/models/canonical_email_block_spec.rb

@@ -3,6 +3,36 @@
 require 'rails_helper'
 
 RSpec.describe CanonicalEmailBlock do
+  describe 'Associations' do
+    it { is_expected.to belong_to(:reference_account).class_name('Account').optional }
+  end
+
+  describe 'Scopes' do
+    describe '.matching_email' do
+      subject { described_class.matching_email(email) }
+
+      let!(:block) { Fabricate :canonical_email_block, email: 'test@example.com' }
+
+      context 'when email is exact match' do
+        let(:email) { 'test@example.com' }
+
+        it { is_expected.to contain_exactly(block) }
+      end
+
+      context 'when email does not match' do
+        let(:email) { 'test@example.ORG' }
+
+        it { is_expected.to be_empty }
+      end
+
+      context 'when email is different but normalizes to same hash' do
+        let(:email) { 'te.st+more@EXAMPLE.com' }
+
+        it { is_expected.to contain_exactly(block) }
+      end
+    end
+  end
+
   describe '#email=' do
     let(:target_hash) { '973dfe463ec85785f5f95af5ba3906eedb2d931c24e69824a89ea65dba4e813b' }