test: add orm store, model, and relation tests

test/test_orm_model.rb

@@ -0,0 +1,107 @@
+require 'minitest/autorun'
+require 'prism'
+require 'tmpdir'
+
+class OrmModelTest < Minitest::Test
+  def setup
+    @dir = Dir.mktmpdir('prism-model-store')
+    @store = Prism::Orm::Store.new(File.join(@dir, 'test.pstore'))
+    @store.create_table(:widgets, %w[id name price created_at updated_at])
+    define_widget_class
+  end
+
+  def teardown
+    FileUtils.remove_entry(@dir)
+    Object.send(:remove_const, :Widget) if Object.const_defined?(:Widget)
+  end
+
+  def define_widget_class
+    store = @store
+    widget_class = Class.new(Prism::Orm::Model) do
+      table_name :widgets
+      self.store = store
+    end
+    Object.const_set(:Widget, widget_class)
+  end
+
+  def test_create_persists_and_returns_record
+    widget = Widget.create(name: 'gizmo', price: 10)
+    assert widget.persisted?
+    refute_nil widget.id
+    assert_equal 'gizmo', Widget.find(widget.id).name
+  end
+
+  def test_dynamic_attribute_accessors
+    widget = Widget.new(name: 'gadget')
+    assert_equal 'gadget', widget.name
+    widget.name = 'renamed'
+    assert_equal 'renamed', widget.name
+  end
+
+  def test_find_raises_for_missing_record
+    assert_raises(Prism::Orm::RecordNotFound) { Widget.find(9999) }
+  end
+
+  def test_update_persists_new_values
+    widget = Widget.create(name: 'gizmo', price: 10)
+    widget.update(price: 25)
+    assert_equal 25, Widget.find(widget.id).price
+  end
+
+  def test_destroy_removes_record
+    widget = Widget.create(name: 'gizmo')
+    id = widget.id
+    widget.destroy
+    assert widget.destroyed?
+    assert_raises(Prism::Orm::RecordNotFound) { Widget.find(id) }
+  end
+
+  def test_reload_refreshes_attributes
+    widget = Widget.create(name: 'gizmo', price: 10)
+    Widget.find(widget.id).update(price: 99)
+    widget.reload
+    assert_equal 99, widget.price
+  end
+
+  def test_timestamps_are_touched_on_save
+    widget = Widget.create(name: 'gizmo')
+    refute_nil widget.created_at
+    refute_nil widget.updated_at
+    created_at = widget.created_at
+    widget.update(price: 5)
+    assert_equal created_at, widget.created_at
+    refute_nil widget.updated_at
+  end
+
+  def test_equality_by_class_and_id
+    widget = Widget.create(name: 'gizmo')
+    same = Widget.find(widget.id)
+    assert_equal widget, same
+  end
+
+  def test_save_fails_and_returns_false_when_invalid
+    Widget.validates(:name, presence: true)
+    widget = Widget.new(name: '')
+    refute widget.save
+    assert_includes widget.errors[:name], 'must be present'
+  ensure
+    Widget.validators.clear
+  end
+
+  def test_save_bang_raises_on_invalid_record
+    Widget.validates(:name, presence: true)
+    widget = Widget.new(name: '')
+    assert_raises(Prism::Orm::RecordInvalid) { widget.save! }
+  ensure
+    Widget.validators.clear
+  end
+
+  def test_reset_schema_picks_up_columns_added_after_the_model_was_first_used
+    Widget.new # forces load_schema! against the original column set
+    @store.add_column(:widgets, :sku)
+    Widget.reset_schema!
+
+    widget = Widget.create(name: 'gizmo', sku: 'SKU-1')
+    assert_equal 'SKU-1', widget.sku
+  end
+end