Add the ability to parse CWE-{number} format

Changelog: fixed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/84313
EE: true

ee/app/finders/security/training_providers/base_url_finder.rb

@@ -13,7 +13,7 @@ module Security
       def initialize(project, provider, identifier_external_id)
         @project = project
         @provider = provider
-        @identifier_external_id = identifier_external_id
+        @identifier_external_id = identifier_external_id.split('-').last
       end
 
       def execute

ee/spec/finders/security/training_providers/base_url_finder_spec.rb

@@ -10,7 +10,7 @@ RSpec.describe Security::TrainingProviders::BaseUrlFinder do
 
   describe '#execute' do
     it 'raises an error if full_url is not implemented' do
-      expect { described_class.new(nil, nil, nil).execute }.to raise_error(
+      expect { described_class.new(identifier.project, provider, identifier.external_type).execute }.to raise_error(
         NotImplementedError,
         'full_url must be overwritten to return training url'
       )

ee/spec/finders/security/training_providers/kontra_url_finder_spec.rb

@@ -43,5 +43,13 @@ RSpec.describe Security::TrainingProviders::KontraUrlFinder do
     it 'returns full url path' do
       expect(described_class.new(identifier.project, provider, identifier.external_id).full_url).to eq('example.com/?cwe=2')
     end
+
+    context "when identifier contains CWE-{number} format" do
+      let_it_be(:identifier) { create(:vulnerabilities_identifier, external_type: 'cwe', external_id: "CWE-2") }
+
+      it 'returns full url path with proper mapping key' do
+        expect(described_class.new(identifier.project, provider, identifier.external_id).full_url).to eq('example.com/?cwe=2')
+      end
+    end
   end
 end

ee/spec/finders/security/training_providers/secure_code_warrior_url_finder_spec.rb

@@ -43,5 +43,13 @@ RSpec.describe Security::TrainingProviders::SecureCodeWarriorUrlFinder do
     it 'returns full url path' do
       expect(described_class.new(identifier.project, provider, identifier.external_id).full_url).to eq('example.com/?Id=gitlab&MappingList=cwe&MappingKey=2')
     end
+
+    context "when identifier contains CWE-{number} format" do
+      let_it_be(:identifier) { create(:vulnerabilities_identifier, external_type: 'cwe', external_id: "CWE-2") }
+
+      it 'returns full url path with proper mapping key' do
+        expect(described_class.new(identifier.project, provider, identifier.external_id).full_url).to eq('example.com/?Id=gitlab&MappingList=cwe&MappingKey=2')
+      end
+    end
   end
 end