Allow 0 for project/namespace max_pages_size as infinity

changelogs/unreleased/199422-maximum-size-for-gitlab-pages-says-to-set-it-to-0-for-unlimited-bu.yml

+---
+title: Allow 0 to be set for pages maximum size per project/group to indicate unlimited
+  size
+merge_request: 25677
+author:
+type: fixed

ee/app/models/ee/namespace.rb

@@ -67,7 +67,7 @@ module EE
       validate :validate_shared_runner_minutes_support
 
       validates :max_pages_size,
-                numericality: { only_integer: true, greater_than: 0, allow_nil: true,
+                numericality: { only_integer: true, greater_than_or_equal_to: 0, allow_nil: true,
                                 less_than: ::Gitlab::Pages::MAX_SIZE / 1.megabyte }
 
       delegate :trial?, :trial_ends_on, :trial_starts_on, :upgradable?, to: :gitlab_subscription, allow_nil: true

ee/app/models/ee/project.rb

@@ -162,7 +162,7 @@ module EE
       validates :repository_size_limit,
         numericality: { only_integer: true, greater_than_or_equal_to: 0, allow_nil: true }
       validates :max_pages_size,
-        numericality: { only_integer: true, greater_than: 0, allow_nil: true,
+        numericality: { only_integer: true, greater_than_or_equal_to: 0, allow_nil: true,
                         less_than: ::Gitlab::Pages::MAX_SIZE / 1.megabyte }
 
       validates :approvals_before_merge, numericality: true, allow_blank: true

ee/spec/models/namespace_spec.rb

@@ -98,8 +98,8 @@ describe Namespace do
   end
 
   context 'validation' do
-    it do
-      is_expected.to validate_numericality_of(:max_pages_size).only_integer.is_greater_than(0)
+    it "ensures max_pages_size is an integer greater than 0 (or equal to 0 to indicate unlimited/maximum)" do
+      is_expected.to validate_numericality_of(:max_pages_size).only_integer.is_greater_than_or_equal_to(0)
                        .is_less_than(::Gitlab::Pages::MAX_SIZE / 1.megabyte)
     end
   end

ee/spec/models/project_spec.rb

@@ -206,8 +206,8 @@ describe Project do
         it { expect(project).to be_valid }
       end
 
-      it do
-        is_expected.to validate_numericality_of(:max_pages_size).only_integer.is_greater_than(0)
+      it "ensures max_pages_size is an integer greater than 0 (or equal to 0 to indicate unlimited/maximum)" do
+        is_expected.to validate_numericality_of(:max_pages_size).only_integer.is_greater_than_or_equal_to(0)
                          .is_less_than(::Gitlab::Pages::MAX_SIZE / 1.megabyte)
       end
     end