Improve search empty state message

This MR improves empty results page messaging for group and project
searches. We display the group/project name to add more context to the
user.

app/helpers/search_helper.rb

@@ -92,11 +92,27 @@ module SearchHelper
     end
   end
 
-  def search_entries_empty_message(scope, term)
-    (s_("SearchResults|We couldn't find any %{scope} matching %{term}") % {
+  def search_entries_empty_message(scope, term, group, project)
+    options = {
       scope: search_entries_scope_label(scope, 0),
-      term: "<code>#{h(term)}</code>"
-    }).html_safe
+      term: "<code>#{h(term)}</code>".html_safe
+    }
+
+    # We check project first because we have 3 possible combinations here:
+    # - group && project
+    # - group
+    # - group: nil, project: nil
+    if project
+      html_escape(_("We couldn't find any %{scope} matching %{term} in project %{project}")) % options.merge(
+        project: link_to(project.full_name, project_path(project), target: '_blank', rel: 'noopener noreferrer').html_safe
+      )
+    elsif group
+      html_escape(_("We couldn't find any %{scope} matching %{term} in group %{group}")) % options.merge(
+        group: link_to(group.full_name, group_path(group), target: '_blank', rel: 'noopener noreferrer').html_safe
+      )
+    else
+      html_escape(_("We couldn't find any %{scope} matching %{term}")) % options
+    end
   end
 
   def repository_ref(project)

app/views/search/results/_empty.html.haml

-.search_box
+.search_box.gl-my-8
   .search_glyph
   %h4
     = sprite_icon('search', size: 24, css_class: 'gl-vertical-align-text-bottom')
-    = search_entries_empty_message(@scope, @search_term)
+    = search_entries_empty_message(@scope, @search_term, @group, @project)

changelogs/unreleased/267394-improve-search-empty-message.yml

+---
+title: Improve empty search results message for group and project scopes
+merge_request: 46237
+author:
+type: changed

locale/gitlab.pot

@@ -23495,9 +23495,6 @@ msgstr ""
 msgid "SearchResults|Showing %{from} - %{to} of %{count} %{scope} for%{term_element} in your personal and project snippets"
 msgstr ""
 
-msgid "SearchResults|We couldn't find any %{scope} matching %{term}"
-msgstr ""
-
 msgid "SearchResults|code result"
 msgid_plural "SearchResults|code results"
 msgstr[0] ""
@@ -29841,6 +29838,15 @@ msgstr ""
 msgid "We could not determine the path to remove the issue"
 msgstr ""
 
+msgid "We couldn't find any %{scope} matching %{term}"
+msgstr ""
+
+msgid "We couldn't find any %{scope} matching %{term} in group %{group}"
+msgstr ""
+
+msgid "We couldn't find any %{scope} matching %{term} in project %{project}"
+msgstr ""
+
 msgid "We couldn't reach the Prometheus server. Either the server no longer exists or the configuration details need updating."
 msgstr ""
 

spec/helpers/search_helper_spec.rb

@@ -236,13 +236,36 @@ RSpec.describe SearchHelper do
   end
 
   describe 'search_entries_empty_message' do
+    let!(:group) { build(:group) }
+    let!(:project) { build(:project, group: group) }
+
+    context 'global search' do
+      let(:message) { search_entries_empty_message('projects', '<h1>foo</h1>', nil, nil) }
+
+      it 'returns the formatted entry message' do
+        expect(message).to eq("We couldn&#39;t find any projects matching <code>&lt;h1&gt;foo&lt;/h1&gt;</code>")
+        expect(message).to be_html_safe
+      end
+    end
+
+    context 'group search' do
+      let(:message) { search_entries_empty_message('projects', '<h1>foo</h1>', group, nil) }
+
       it 'returns the formatted entry message' do
-      message = search_entries_empty_message('projects', '<h1>foo</h1>')
+        expect(message).to start_with('We couldn&#39;t find any projects matching <code>&lt;h1&gt;foo&lt;/h1&gt;</code> in group <a')
+        expect(message).to be_html_safe
+      end
+    end
 
-      expect(message).to eq("We couldn't find any projects matching <code>&lt;h1&gt;foo&lt;/h1&gt;</code>")
+    context 'project search' do
+      let(:message) { search_entries_empty_message('projects', '<h1>foo</h1>', group, project) }
+
+      it 'returns the formatted entry message' do
+        expect(message).to start_with('We couldn&#39;t find any projects matching <code>&lt;h1&gt;foo&lt;/h1&gt;</code> in project <a')
         expect(message).to be_html_safe
       end
     end
+  end
 
   describe 'search_filter_input_options' do
     context 'project' do