Convert detected_policies to find_policies

* Rename `detected_policies to `find_policies`.
* Update test cases

ee/app/controllers/projects/licenses_controller.rb

@@ -70,13 +70,10 @@ module Projects
     end
 
     def matching_policies_from(license_compliance)
-      only_detected = filter_params[:detected]
-      classifications = Array(filter_params[:classification] || ['allowed', 'denied', 'unclassified'])
-      license_compliance.policies.find_all do |policy|
-        next if only_detected && policy.dependencies.none?
-
-        classifications.include?(policy.classification)
-      end
+      license_compliance.find_policies(
+        detected_only: filter_params[:detected].present?,
+        classification: Array(filter_params[:classification] || [])
+      )
     end
   end
 end

ee/app/models/sca/license_compliance.rb

@@ -14,8 +14,12 @@ module SCA
       end
     end
 
-    def detected_policies
-      policies.reject { |policy| policy.dependencies.count.zero? }
+    def find_policies(detected_only: false, classification: [])
+      classifications = Array(classification || [])
+      policies.reject do |policy|
+        (detected_only && policy.dependencies.none?) ||
+          (classifications.present? && !policy.classification.in?(classifications))
+      end
     end
 
     def latest_build_for_default_branch

ee/spec/controllers/projects/licenses_controller_spec.rb

@@ -199,7 +199,7 @@ describe Projects::LicensesController do
               get :index, params: {
                 namespace_id: project.namespace,
                 project_id: project,
-                classification: ['allowed', 'denied']
+                classification: %w[allowed denied]
               }, format: :json
             end
 

ee/spec/models/sca/license_compliance_spec.rb

@@ -147,11 +147,13 @@ RSpec.describe SCA::LicenseCompliance do
     end
   end
 
-  describe "#detected_policies" do
+  describe "#find_policies" do
     let!(:pipeline) { create(:ci_pipeline, :success, project: project, builds: [create(:ee_ci_build, :success, :license_scan_v2)]) }
     let!(:mit_policy) { create(:software_license_policy, :denied, software_license: mit, project: project) }
     let!(:other_license_policy) { create(:software_license_policy, :allowed, software_license: other_license, project: project) }
-    let(:results) { subject.detected_policies }
+
+    context "when searching for policies for licenses that were detected in a scan report" do
+      let(:results) { subject.find_policies(detected_only: true) }
 
       it 'excludes policies for licenses that do not appear in the latest license scan report' do
         expect(results.count).to eq(3)
@@ -182,6 +184,54 @@ RSpec.describe SCA::LicenseCompliance do
       end
     end
 
+    context "when searching for policies with a specific classification" do
+      let(:results) { subject.find_policies(classification: ['allowed']) }
+
+      it 'includes an entry for each `allowed` licensed' do
+        expect(results.count).to eq(1)
+        expect(results[0].id).to eql(other_license_policy.id)
+        expect(results[0].name).to eq(other_license_policy.software_license.name)
+        expect(results[0].url).to be_blank
+        expect(results[0].classification).to eq("allowed")
+        expect(results[0].spdx_identifier).to eq(other_license_policy.software_license.spdx_identifier)
+      end
+    end
+
+    context "when searching for policies by multiple classifications" do
+      let(:results) { subject.find_policies(classification: %w[allowed denied]) }
+
+      it 'includes an entry for each `allowed` and `denied` licensed' do
+        expect(results.count).to eq(2)
+
+        expect(results[0].id).to eql(mit_policy.id)
+        expect(results[0].name).to eq(mit_policy.software_license.name)
+        expect(results[0].url).to be_present
+        expect(results[0].classification).to eq("denied")
+        expect(results[0].spdx_identifier).to eq(mit_policy.software_license.spdx_identifier)
+
+        expect(results[1].id).to eql(other_license_policy.id)
+        expect(results[1].name).to eq(other_license_policy.software_license.name)
+        expect(results[1].url).to be_blank
+        expect(results[1].classification).to eq("allowed")
+        expect(results[1].spdx_identifier).to eq(other_license_policy.software_license.spdx_identifier)
+      end
+    end
+
+    context "when searching for detected policies matching a classification" do
+      let(:results) { subject.find_policies(detected_only: true, classification: %w[allowed denied]) }
+
+      it 'includes an entry for each entry that was detected in the report and matches a classification' do
+        expect(results.count).to eq(1)
+
+        expect(results[0].id).to eql(mit_policy.id)
+        expect(results[0].name).to eq(mit_policy.software_license.name)
+        expect(results[0].url).to be_present
+        expect(results[0].classification).to eq("denied")
+        expect(results[0].spdx_identifier).to eq(mit_policy.software_license.spdx_identifier)
+      end
+    end
+  end
+
   describe "#latest_build_for_default_branch" do
     let(:regular_build) { create(:ci_build, :success) }
     let(:license_scan_build) { create(:ee_ci_build, :license_scan_v2, :success) }