Alter masked_page_url to accept group and project

Refactoring masked_page_url  to accept arguments explicitly
instead of relying on controllers fields. This chage imrooves
readability and helps prevent bugs similar to
https://gitlab.com/gitlab-org/gitlab/-/issues/345417

app/helpers/routing/pseudonymization_helper.rb

@@ -69,12 +69,10 @@ module Routing
       end
     end
 
-    def masked_page_url
+    def masked_page_url(group:, project:)
       return unless Feature.enabled?(:mask_page_urls, type: :ops)
 
-      current_group = group if defined?(group)
-      current_project = project if defined?(project)
-      mask_helper = MaskHelper.new(request, current_group, current_project)
+      mask_helper = MaskHelper.new(request, group, project)
       mask_helper.mask_params
 
     # We rescue all exception for time being till we test this helper extensively.

app/views/layouts/_snowplow.html.haml

 - return unless Gitlab::Tracking.enabled?
 
+- namespace = @group || @project&.namespace
+
 = javascript_tag do
   :plain
     ;(function(p,l,o,w,i,n,g){if(!p[i]){p.GlobalSnowplowNamespace=p.GlobalSnowplowNamespace||[];
@@ -10,6 +12,6 @@
     window.snowplowOptions = #{Gitlab::Tracking.options(@group).to_json}
 
     gl = window.gl || {};
-    gl.snowplowStandardContext = #{Gitlab::Tracking::StandardContext.new(namespace: @group || @project&.namespace,
+    gl.snowplowStandardContext = #{Gitlab::Tracking::StandardContext.new(namespace: namespace,
      project: @project, user: current_user).to_context.to_json.to_json}
-    gl.snowplowPseudonymizedPageUrl = #{masked_page_url.to_json};
+    gl.snowplowPseudonymizedPageUrl = #{masked_page_url(group: namespace, project: @project).to_json};

ee/spec/helpers/routing/pseudonymization_helper_spec.rb

@@ -14,7 +14,7 @@ RSpec.describe ::Routing::PseudonymizationHelper do
 
   shared_examples 'masked url' do
     it 'generates masked page url' do
-      expect(helper.masked_page_url).to eq(masked_url)
+      expect(helper.masked_page_url(group: group, project: project)).to eq(masked_url)
     end
   end
 

spec/helpers/routing/pseudonymization_helper_spec.rb

@@ -11,15 +11,15 @@ RSpec.describe ::Routing::PseudonymizationHelper do
 
   let(:merge_request) { create(:merge_request, source_project: project) }
 
+  let(:subject) { helper.masked_page_url(group: group, project: project) }
+
   before do
     stub_feature_flags(mask_page_urls: true)
-    allow(helper).to receive(:group).and_return(group)
-    allow(helper).to receive(:project).and_return(project)
   end
 
   shared_examples 'masked url' do
     it 'generates masked page url' do
-      expect(helper.masked_page_url).to eq(masked_url)
+      expect(subject).to eq(masked_url)
     end
   end
 
@@ -72,6 +72,8 @@ RSpec.describe ::Routing::PseudonymizationHelper do
 
     context 'with controller for groups with subgroups and project' do
       let(:masked_url) { "http://localhost/namespace#{subgroup.id}/project#{subproject.id}"}
+      let(:group) { subgroup }
+      let(:project) { subproject }
       let(:request) do
         double(:Request,
                path_parameters: {
@@ -86,8 +88,6 @@ RSpec.describe ::Routing::PseudonymizationHelper do
       end
 
       before do
-        allow(helper).to receive(:group).and_return(subgroup)
-        allow(helper).to receive(:project).and_return(subproject)
         allow(helper).to receive(:request).and_return(request)
       end
 
@@ -96,6 +96,7 @@ RSpec.describe ::Routing::PseudonymizationHelper do
 
     context 'with controller for groups and subgroups' do
       let(:masked_url) { "http://localhost/groups/namespace#{subgroup.id}/-/shared"}
+      let(:group) { subgroup }
       let(:request) do
         double(:Request,
                path_parameters: {
@@ -109,7 +110,6 @@ RSpec.describe ::Routing::PseudonymizationHelper do
       end
 
       before do
-        allow(helper).to receive(:group).and_return(subgroup)
         allow(helper).to receive(:request).and_return(request)
       end
 
@@ -230,7 +230,7 @@ RSpec.describe ::Routing::PseudonymizationHelper do
       end
 
       it 'masked_page_url' do
-        expect(helper.masked_page_url).to eq(root_url)
+        expect(subject).to eq(root_url)
       end
     end
   end
@@ -262,7 +262,7 @@ RSpec.describe ::Routing::PseudonymizationHelper do
           ActionController::RoutingError,
           url: '/dashboard/issues?assignee_username=root').and_call_original
 
-        expect(helper.masked_page_url).to be_nil
+        expect(subject).to be_nil
       end
     end
   end
@@ -273,7 +273,7 @@ RSpec.describe ::Routing::PseudonymizationHelper do
     end
 
     it 'returns nil' do
-      expect(helper.masked_page_url).to be_nil
+      expect(subject).to be_nil
     end
   end
 end