Fix multiparameter extension to not allow partial dates as per ActiveRecord implementation.

lib/validates_timeliness/extensions/multiparameter_handler.rb

@@ -21,18 +21,24 @@ module ValidatesTimeliness
       end
 
       def instantiate_time_object_with_timeliness(name, values)
-        if Date.valid_civil?(*values[0..2])
+        validate_multiparameter_date_values(values) {
           instantiate_time_object_without_timeliness(name, values)
-        else
-          invalid_multiparameter_date_or_time_as_string(values)
-        end
+        }
       end
 
       def instantiate_date_object(name, values)
-        values = values.map { |v| v.nil? ? 1 : v }
-        Date.new(*values)
-      rescue ArgumentError => ex
-        invalid_multiparameter_date_or_time_as_string(values)
+        validate_multiparameter_date_values(values) {
+          Date.new(*values)
+        }
+      end
+
+      # Yield if date values are valid
+      def validate_multiparameter_date_values(values)
+        if values[0..2].all?{ |v| v.present? } && Date.valid_civil?(*values[0..2])
+          yield
+        else
+          invalid_multiparameter_date_or_time_as_string(values)
+        end
       end
 
       def read_value_from_parameter_with_timeliness(name, values_from_param)

spec/validates_timeliness/extensions/multiparameter_handler_spec.rb

@@ -3,26 +3,36 @@ require 'spec_helper'
 describe ValidatesTimeliness::Extensions::MultiparameterHandler do
 
   context "time column" do
-    it 'should return string value for invalid date portion' do
+    it 'should assign a string value for invalid date portion' do
       employee = record_with_multiparameter_attribute(:birth_datetime, [2000, 2, 31, 12, 0, 0])
-      employee.birth_datetime_before_type_cast.should == '2000-02-31 12:00:00'
+      employee.birth_datetime_before_type_cast.should eq '2000-02-31 12:00:00'
     end
      
-    it 'should return Time value for valid datetimes' do
+    it 'should assign a Time value for valid datetimes' do
       employee = record_with_multiparameter_attribute(:birth_datetime, [2000, 2, 28, 12, 0, 0])
-      employee.birth_datetime_before_type_cast.should be_kind_of(Time)
+      employee.birth_datetime_before_type_cast.should eq Time.local(2000, 2, 28, 12, 0, 0)
+    end
+
+    it 'should assign a string value for incomplete time' do
+      employee = record_with_multiparameter_attribute(:birth_datetime, [2000, nil, nil])
+      employee.birth_datetime_before_type_cast.should eq '2000-00-00'
     end
   end
 
   context "date column" do
-    it 'should return string value for invalid date' do
+    it 'should assign a string value for invalid date' do
       employee = record_with_multiparameter_attribute(:birth_date, [2000, 2, 31])
-      employee.birth_date_before_type_cast.should == '2000-02-31'
+      employee.birth_date_before_type_cast.should eq '2000-02-31'
     end
 
-    it 'should return Date value for valid date' do
+    it 'should assign a Date value for valid date' do
       employee = record_with_multiparameter_attribute(:birth_date, [2000, 2, 28])
-      employee.birth_date_before_type_cast.should be_kind_of(Date)
+      employee.birth_date_before_type_cast.should eq Date.new(2000, 2, 28)
+    end
+
+    it 'should assign a string value for incomplete date' do
+      employee = record_with_multiparameter_attribute(:birth_date, [2000, nil, nil])
+      employee.birth_date_before_type_cast.should eq '2000-00-00'
     end
   end