Move categories to top-level namespace (#894)

test/models/category_test.rb

@@ -0,0 +1,51 @@
+require "test_helper"
+
+class CategoryTest < ActiveSupport::TestCase
+  def setup
+    @family = families(:dylan_family)
+  end
+
+  test "create_default_categories should generate categories if none exist" do
+    @family.accounts.destroy_all
+    @family.categories.destroy_all
+    assert_difference "Category.count", Category::DEFAULT_CATEGORIES.size do
+      Category.create_default_categories(@family)
+    end
+  end
+
+  test "create_default_categories should raise when there are existing categories" do
+    assert_raises(ArgumentError) do
+      Category.create_default_categories(@family)
+    end
+  end
+
+  test "updating name should clear the internal_category field" do
+    category = Category.take
+    assert_changes "category.reload.internal_category", to: nil do
+      category.update_attribute(:name, "new name")
+    end
+  end
+
+  test "updating other field than name should not clear the internal_category field" do
+    category = Category.take
+    assert_no_changes "category.reload.internal_category" do
+      category.update_attribute(:color, "#000")
+    end
+  end
+
+  test "replacing and destroying" do
+    transctions = categories(:food_and_drink).transactions.to_a
+
+    categories(:food_and_drink).replace_and_destroy!(categories(:income))
+
+    assert_equal categories(:income), transactions.map { |t| t.reload.category }.uniq.first
+  end
+
+  test "replacing with nil should nullify the category" do
+    transactions = categories(:food_and_drink).transactions.to_a
+
+    categories(:food_and_drink).replace_and_destroy!(nil)
+
+    assert_nil transactions.map { |t| t.reload.category }.uniq.first
+  end
+end