Fix “Share lock” help text

app/helpers/groups_helper.rb

@@ -69,12 +69,18 @@ module GroupsHelper
       { group_name: group.name }
   end
 
-  def share_with_group_lock_help_text
-    return default_help                          unless @group.has_parent?
-    return default_help                          unless @group.parent.share_with_group_lock?
-    return parent_locked_and_has_been_overridden unless @group.share_with_group_lock?
-    return parent_locked_but_you_can_override    if     @group.has_owner?(current_user)
-    return parent_locked_so_ask_the_owner
+  def share_with_group_lock_help_text(group)
+    return default_help unless group.parent&.share_with_group_lock?
+
+    if group.share_with_group_lock?
+      if can?(current_user, :change_share_with_group_lock, group.parent)
+        ancestor_locked_but_you_can_override(group)
+      else
+        ancestor_locked_so_ask_the_owner(group)
+      end
+    else
+      ancestor_locked_and_has_been_overridden(group)
+    end
   end
 
   private
@@ -93,23 +99,30 @@ module GroupsHelper
     end
   end
 
-  def parent_group_link
-    link_to @group.parent.name, group_path(@group.parent)
+  def ancestor_group_link(group)
+    ancestor = oldest_consecutively_locked_ancestor(group)
+    link_to ancestor.name, group_path(ancestor)
+  end
+
+  def oldest_consecutively_locked_ancestor(group)
+    group.ancestors.find do |group|
+      !group.has_parent? || !group.parent.share_with_group_lock?
+    end
   end
 
   def default_help
     s_("GroupSettings|This setting will be applied to all subgroups unless overridden by a group owner.")
   end
 
-  def parent_locked_but_you_can_override
-    s_("GroupSettings|This setting is applied on %{parent_group}. You can override the setting or remove the share lock from the parent group.") % { parent_group: parent_group_link }
+  def ancestor_locked_but_you_can_override(group)
+    s_("GroupSettings|This setting is applied on %{ancestor_group}. You can override the setting or remove the share lock from %{ancestor_group}.") % { ancestor_group: ancestor_group_link(group) }
   end
 
-  def parent_locked_so_ask_the_owner
-    s_("GroupSettings|This setting is applied on %{parent_group}. To share this group with another group, ask the owner to override the setting or remove the share lock from the parent group.") % { parent_group: parent_group_link }
+  def ancestor_locked_so_ask_the_owner(group)
+    s_("GroupSettings|This setting is applied on %{ancestor_group}. To share projects in this group with another group, ask the owner to override the setting or remove the share lock from %{ancestor_group}.") % { ancestor_group: ancestor_group_link(group) }
   end
 
-  def parent_locked_and_has_been_overridden
-    s_("GroupSettings|This setting is applied on %{parent_group} and has been overridden on this subgroup.") % { parent_group: parent_group_link }
+  def ancestor_locked_and_has_been_overridden(group)
+    s_("GroupSettings|This setting is applied on %{ancestor_group} and has been overridden on this subgroup.") % { ancestor_group: ancestor_group_link(group) }
   end
 end

app/views/groups/edit.html.haml

@@ -39,7 +39,7 @@
                 - group_link = link_to @group.name, group_path(@group)
                 = s_("GroupSettings|Prevent sharing a project within %{group} with other groups").html_safe % { group: group_link }
               %br
-              %span.descr= share_with_group_lock_help_text
+              %span.descr= share_with_group_lock_help_text(@group)
 
       = render 'group_admin_settings', f: f
 

spec/helpers/groups_helper_spec.rb

@@ -95,4 +95,87 @@ describe GroupsHelper do
         .to match(/<li style="text-indent: 16px;"><a.*>#{deep_nested_group.name}.*<\/li>.*<a.*>#{very_deep_nested_group.name}<\/a>/m)
     end
   end
+
+  # rubocop:disable Layout/SpaceBeforeComma
+  describe '#share_with_group_lock_help_text', :nested_groups do
+    let!(:root_group) { create(:group) }
+    let!(:subgroup) { create(:group, parent: root_group) }
+    let!(:sub_subgroup) { create(:group, parent: subgroup) }
+    let(:root_owner) { create(:user) }
+    let(:sub_owner) { create(:user) }
+    let(:sub_sub_owner) { create(:user) }
+    let(:possible_help_texts) do
+      {
+        default_help: "This setting will be applied to all subgroups unless overridden by a group owner",
+        ancestor_locked_but_you_can_override: /This setting is applied on [\w\s<>="\/]+\. You can override the setting or remove the share lock from [\w\s<>="\/]+/,
+        ancestor_locked_so_ask_the_owner: /This setting is applied on [\w\s<>="\/]+\. To share projects in this group with another group, ask the owner to override the setting or remove the share lock from [\w\s<>="\/]+/,
+        ancestor_locked_and_has_been_overridden: /This setting is applied on [\w\s<>="\/]+ and has been overridden on this subgroup/
+      }
+    end
+    let(:possible_linked_ancestors) do
+      {
+        root_group: root_group,
+        subgroup: subgroup
+      }
+    end
+    let(:users) do
+      {
+        root_owner: root_owner,
+        sub_owner: sub_owner,
+        sub_sub_owner: sub_sub_owner
+      }
+    end
+    subject { helper.share_with_group_lock_help_text(sub_subgroup) }
+
+    where(:root_share_locked, :subgroup_share_locked, :sub_subgroup_share_locked, :current_user, :help_text, :linked_ancestor) do
+      [
+        [false , false , false , :root_owner     , :default_help                            , nil],
+        [false , false , false , :sub_owner      , :default_help                            , nil],
+        [false , false , false , :sub_sub_owner  , :default_help                            , nil],
+        [false , false , true  , :root_owner     , :default_help                            , nil],
+        [false , false , true  , :sub_owner      , :default_help                            , nil],
+        [false , false , true  , :sub_sub_owner  , :default_help                            , nil],
+        [false , true  , false , :root_owner     , :ancestor_locked_and_has_been_overridden , :subgroup],
+        [false , true  , false , :sub_owner      , :ancestor_locked_and_has_been_overridden , :subgroup],
+        [false , true  , false , :sub_sub_owner  , :ancestor_locked_and_has_been_overridden , :subgroup],
+        [false , true  , true  , :root_owner     , :ancestor_locked_but_you_can_override    , :subgroup],
+        [false , true  , true  , :sub_owner      , :ancestor_locked_but_you_can_override    , :subgroup],
+        [false , true  , true  , :sub_sub_owner  , :ancestor_locked_so_ask_the_owner        , :subgroup],
+        [true  , false , false , :root_owner     , :default_help                            , nil],
+        [true  , false , false , :sub_owner      , :default_help                            , nil],
+        [true  , false , false , :sub_sub_owner  , :default_help                            , nil],
+        [true  , false , true  , :root_owner     , :default_help                            , nil],
+        [true  , false , true  , :sub_owner      , :default_help                            , nil],
+        [true  , false , true  , :sub_sub_owner  , :default_help                            , nil],
+        [true  , true  , false , :root_owner     , :ancestor_locked_and_has_been_overridden , :root_group],
+        [true  , true  , false , :sub_owner      , :ancestor_locked_and_has_been_overridden , :root_group],
+        [true  , true  , false , :sub_sub_owner  , :ancestor_locked_and_has_been_overridden , :root_group],
+        [true  , true  , true  , :root_owner     , :ancestor_locked_but_you_can_override    , :root_group],
+        [true  , true  , true  , :sub_owner      , :ancestor_locked_so_ask_the_owner        , :root_group],
+        [true  , true  , true  , :sub_sub_owner  , :ancestor_locked_so_ask_the_owner        , :root_group]
+      ]
+    end
+
+    with_them do
+      before do
+        root_group.add_owner(root_owner)
+        subgroup.add_owner(sub_owner)
+        sub_subgroup.add_owner(sub_sub_owner)
+
+        root_group.update_column(:share_with_group_lock, true) if root_share_locked
+        subgroup.update_column(:share_with_group_lock, true) if subgroup_share_locked
+        sub_subgroup.update_column(:share_with_group_lock, true) if sub_subgroup_share_locked
+
+        allow(helper).to receive(:current_user).and_return(users[current_user])
+        allow(helper).to receive(:can?)
+                           .with(users[current_user], :change_share_with_group_lock, subgroup)
+                           .and_return(Ability.allowed?(users[current_user], :change_share_with_group_lock, subgroup))
+      end
+
+      it 'has the correct help text with correct ancestor links' do
+        expect(subject).to match(possible_help_texts[help_text])
+        expect(subject).to match(possible_linked_ancestors[linked_ancestor].name) unless help_text == :default_help
+      end
+    end
+  end
 end

spec/views/groups/edit.html.haml_spec.rb

@@ -6,8 +6,6 @@ describe 'groups/edit.html.haml' do
   describe 'Share lock option' do
     let(:root_owner) { create(:user) }
     let(:root_group) { create(:group) }
-    let(:expected_label) { default_label }
-    let(:expected_help) { default_help }
 
     before do
       root_group.add_owner(root_owner)
@@ -16,14 +14,16 @@ describe 'groups/edit.html.haml' do
     shared_examples_for 'share lock option' do |checkbox_options|
       it 'should have the correct label, help text, and checkbox options' do
         assign(:group, test_group)
-        allow(view).to receive(:can?).and_return(true)
+        allow(view).to receive(:can?).with(test_user, :admin_group, test_group).and_return(true)
         allow(view).to receive(:can_change_group_visibility_level?).and_return(false)
         allow(view).to receive(:current_user).and_return(test_user)
+        expect(view).to receive(:can_change_share_with_group_lock?).and_return(!checkbox_options[:disabled])
+        expect(view).to receive(:share_with_group_lock_help_text).and_return('help text here')
 
         render
 
-        expect(rendered).to have_content(expected_label)
-        expect(rendered).to have_css('.descr', text: expected_help)
+        expect(rendered).to have_content("Prevent sharing a project within #{test_group.name} with other groups")
+        expect(rendered).to have_css('.descr', text: 'help text here')
         expect(rendered).to have_field('group_share_with_group_lock', checkbox_options)
       end
     end
@@ -82,14 +82,12 @@ describe 'groups/edit.html.haml' do
         context 'when the subgroup has "Share lock" disabled (parent overridden)' do
           context 'as the root_owner' do
             let(:test_user) { root_owner }
-            let(:expected_help) { parent_locked_and_has_been_overridden }
 
             it_behaves_like 'share lock option', { disabled: false, checked: false }
           end
 
           context 'as the sub_owner' do
             let(:test_user) { sub_owner }
-            let(:expected_help) { parent_locked_and_has_been_overridden }
 
             it_behaves_like 'share lock option', { disabled: false, checked: false }
           end
@@ -102,39 +100,17 @@ describe 'groups/edit.html.haml' do
 
           context 'as the root_owner' do
             let(:test_user) { root_owner }
-            let(:expected_help) { parent_locked_but_you_can_override }
 
             it_behaves_like 'share lock option', { disabled: false, checked: true }
           end
 
           context 'as the sub_owner' do
             let(:test_user) { sub_owner }
-            let(:expected_help) { parent_locked_so_ask_the_owner }
 
             it_behaves_like 'share lock option', { disabled: true, checked: true }
           end
         end
       end
     end
-
-    def default_label
-      "Prevent sharing a project within #{test_group.name} with other groups"
-    end
-
-    def default_help
-      "This setting will be applied to all subgroups unless overridden by a group owner."
-    end
-
-    def parent_locked_but_you_can_override
-      "This setting is applied on #{test_group.parent.name}. You can override the setting or remove the share lock from the parent group."
-    end
-
-    def parent_locked_so_ask_the_owner
-      "This setting is applied on #{test_group.parent.name}. To share this group with another group, ask the owner to override the setting or remove the share lock from the parent group."
-    end
-
-    def parent_locked_and_has_been_overridden
-      "This setting is applied on #{test_group.parent.name} and has been overridden on this subgroup."
-    end
   end
 end