test: cover OrmErrorsJsonapiTest, test_empty_errors_produce_empty_array

test/test_orm_errors_jsonapi.rb

@@ -0,0 +1,57 @@
+require 'minitest/autorun'
+require 'prism'
+
+class OrmErrorsJsonapiTest < Minitest::Test
+  def setup
+    @errors = Prism::Orm::Errors.new
+  end
+
+  def test_empty_errors_produce_empty_array
+    assert_equal [], @errors.to_jsonapi
+  end
+
+  def test_one_message_becomes_one_error_object
+    @errors.add(:title, "can't be blank")
+
+    entries = @errors.to_jsonapi
+    assert_equal 1, entries.size
+    entry = entries.first
+    assert_equal '422', entry[:status]
+    assert_equal({ pointer: '/data/attributes/title' }, entry[:source])
+    assert_equal "can't be blank", entry[:title]
+    assert_equal "title can't be blank", entry[:detail]
+  end
+
+  def test_custom_status_is_stringified
+    @errors.add(:base, 'is stale')
+
+    entry = @errors.to_jsonapi(status: 409).first
+    assert_equal '409', entry[:status]
+  end
+
+  def test_multiple_messages_on_same_attribute_each_get_their_own_entry
+    @errors.add(:body, 'is too short')
+    @errors.add(:body, 'contains banned words')
+
+    entries = @errors.to_jsonapi
+    assert_equal 2, entries.size
+    assert_equal ['is too short', 'contains banned words'], entries.map { |e| e[:title] }
+    assert(entries.all? { |e| e[:source] == { pointer: '/data/attributes/body' } })
+  end
+
+  def test_multiple_attributes_each_produce_their_own_pointer
+    @errors.add(:title, 'is too short')
+    @errors.add(:user_id, 'must be present')
+
+    entries = @errors.to_jsonapi
+    pointers = entries.map { |e| e[:source][:pointer] }
+    assert_includes pointers, '/data/attributes/title'
+    assert_includes pointers, '/data/attributes/user_id'
+  end
+
+  def test_full_messages_and_jsonapi_detail_stay_in_sync
+    @errors.add(:email, 'is invalid')
+
+    assert_equal @errors.full_messages, @errors.to_jsonapi.map { |e| e[:detail] }
+  end
+end