From f961ce99d275487c107759891df9761c5db996d5 Mon Sep 17 00:00:00 2001
From: DualFroz <me@dualfroz.com>
Date: Fri, 11 Sep 2026 20:38:47 +0200
Subject: [PATCH] test: cover OrmDirtyTest and teardown

---
 test/test_orm_dirty.rb | 123 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 test/test_orm_dirty.rb

diff --git a/test/test_orm_dirty.rb b/test/test_orm_dirty.rb
new file mode 100644
index 0000000..a74127f
--- /dev/null
+++ b/test/test_orm_dirty.rb
@@ -0,0 +1,123 @@
+require 'minitest/autorun'
+require 'prism'
+require 'tmpdir'
+
+class OrmDirtyTest < Minitest::Test
+  def setup
+    @dir = Dir.mktmpdir('prism-dirty-store')
+    @store = Prism::Orm::Store.new(File.join(@dir, 'test.pstore'))
+    @store.create_table(:widgets, %w[id name notes])
+    widget_class = Class.new(Prism::Orm::Model) do
+      table_name :widgets
+    end
+    widget_class.store = @store
+    Object.const_set(:Widget, widget_class)
+  end
+
+  def teardown
+    FileUtils.remove_entry(@dir)
+    Object.send(:remove_const, :Widget) if Object.const_defined?(:Widget)
+  end
+
+  def test_new_record_shows_assigned_attributes_as_changed
+    widget = Widget.new(name: 'gizmo')
+    assert widget.changed?
+    assert_includes widget.changed, 'name'
+    assert_equal [nil, 'gizmo'], widget.changes['name']
+  end
+
+  def test_persisted_record_is_clean_right_after_load
+    widget = Widget.create!(name: 'gizmo')
+    refute widget.changed?
+    reloaded = Widget.find(widget.id)
+    refute reloaded.changed?
+    assert_empty reloaded.changes
+  end
+
+  def test_setting_an_attribute_marks_it_changed_with_old_and_new_value
+    widget = Widget.create!(name: 'gizmo')
+    widget.name = 'sprocket'
+    assert widget.changed?
+    assert widget.attribute_changed?(:name)
+    assert_equal 'gizmo', widget.attribute_was(:name)
+    assert_equal %w[gizmo sprocket], widget.attribute_change(:name)
+    refute widget.attribute_changed?(:notes)
+  end
+
+  def test_setting_an_attribute_back_to_its_original_value_clears_the_change
+    widget = Widget.create!(name: 'gizmo')
+    widget.name = 'sprocket'
+    widget.name = 'gizmo'
+    refute widget.changed?
+    refute widget.attribute_changed?(:name)
+  end
+
+  def test_restore_attributes_reverts_unsaved_changes
+    widget = Widget.create!(name: 'gizmo', notes: 'first')
+    widget.name = 'sprocket'
+    widget.notes = 'second'
+    widget.restore_attributes(['name'])
+    assert_equal 'gizmo', widget.name
+    assert_equal 'second', widget.notes
+    assert widget.changed?
+    widget.restore_attributes
+    refute widget.changed?
+    assert_equal 'first', widget.notes
+  end
+
+  def test_save_clears_current_changes_and_populates_saved_changes
+    widget = Widget.create!(name: 'gizmo')
+    widget.name = 'sprocket'
+    widget.save!
+    refute widget.changed?
+    assert widget.saved_change_to_attribute?('name')
+    assert_equal %w[gizmo sprocket], widget.saved_change_to_attribute('name')
+    assert_equal %w[gizmo sprocket], widget.saved_changes['name']
+  end
+
+  def test_saved_changes_on_create_shows_nil_to_assigned_value
+    widget = Widget.create!(name: 'gizmo')
+    assert_equal [nil, 'gizmo'], widget.saved_changes['name']
+  end
+
+  def test_saving_with_no_changes_yields_empty_saved_changes
+    widget = Widget.create!(name: 'gizmo')
+    widget.save!
+    assert_empty widget.saved_changes
+  end
+
+  def test_update_only_reports_the_actually_different_attribute
+    widget = Widget.create!(name: 'gizmo', notes: 'first')
+    widget.update!(name: 'gizmo', notes: 'second')
+    assert_equal %w[notes], widget.saved_changes.keys
+  end
+
+  def test_reload_discards_unsaved_changes
+    widget = Widget.create!(name: 'gizmo')
+    widget.name = 'sprocket'
+    widget.reload
+    assert_equal 'gizmo', widget.name
+    refute widget.changed?
+  end
+
+  def test_before_save_callback_can_inspect_pending_changes
+    seen = []
+    widget_class = Class.new(Prism::Orm::Model) do
+      table_name :widgets
+      before_save { seen << attribute_changed?(:name) }
+    end
+    widget_class.store = @store
+    widget = widget_class.create!(name: 'gizmo')
+    widget.update!(name: 'sprocket')
+    widget.save!
+    assert_equal [true, true, false], seen
+  end
+
+  def test_touching_updated_at_column_is_itself_tracked_as_a_change
+    @store.create_table(:stamped, %w[id name updated_at])
+    stamped_class = Class.new(Prism::Orm::Model) { table_name :stamped }
+    stamped_class.store = @store
+    record = stamped_class.create!(name: 'a')
+    assert record.saved_change_to_attribute?('updated_at')
+  end
+end