test: add orm association and validation tests

test/test_orm_validations.rb

@@ -0,0 +1,69 @@
+require 'minitest/autorun'
+require 'prism'
+require 'tmpdir'
+
+class OrmValidationsTest < Minitest::Test
+  def setup
+    @dir = Dir.mktmpdir('prism-validation-store')
+    @store = Prism::Orm::Store.new(File.join(@dir, 'test.pstore'))
+    @store.create_table(:accounts, %w[id email nickname])
+    account_class = Class.new(Prism::Orm::Model) do
+      table_name :accounts
+      validates :email, presence: true, uniqueness: true, format: { with: /\A[^@\s]+@[^@\s]+\z/ }
+      validates :nickname, length: { minimum: 2, maximum: 10 }
+    end
+    account_class.store = @store
+    Object.const_set(:Account, account_class)
+  end
+
+  def teardown
+    FileUtils.remove_entry(@dir)
+    Object.send(:remove_const, :Account) if Object.const_defined?(:Account)
+  end
+
+  def test_presence_validation_blocks_save
+    account = Account.new(email: '')
+    refute account.valid?
+    assert_includes account.errors[:email], 'must be present'
+  end
+
+  def test_format_validation_rejects_bad_email
+    account = Account.new(email: 'not-an-email', nickname: 'foksiu')
+    refute account.valid?
+    assert_includes account.errors[:email], 'is invalid'
+  end
+
+  def test_valid_record_has_no_errors
+    account = Account.new(email: 'foksiu@example.com', nickname: 'foksiu')
+    assert account.valid?
+    assert_empty account.errors
+  end
+
+  def test_uniqueness_rejects_duplicate_email
+    Account.create!(email: 'taken@example.com', nickname: 'first')
+    dupe = Account.new(email: 'taken@example.com', nickname: 'second')
+    refute dupe.valid?
+    assert_includes dupe.errors[:email], 'must be unique'
+  end
+
+  def test_uniqueness_allows_saving_same_record_twice
+    account = Account.create!(email: 'stable@example.com', nickname: 'stable')
+    account.nickname = 'stable2'
+    assert account.save, account.errors.full_messages.join(', ')
+  end
+
+  def test_length_validation
+    account = Account.new(email: 'a@example.com', nickname: 'x')
+    refute account.valid?
+    assert_includes account.errors[:nickname], 'is too short (minimum 2)'
+  end
+
+  def test_custom_message
+    Account.validates(:email, format: { with: /@/, message: 'needs an @ sign' })
+    account = Account.new(email: 'nope', nickname: 'foksiu')
+    refute account.valid?
+    assert_includes account.errors[:email], 'needs an @ sign'
+  ensure
+    Account.validators.pop
+  end
+end