simplify and be more explicit about create and after_initialize tests

activerecord/test/cases/base_test.rb

@@ -261,26 +261,18 @@ def test_initialize_with_invalid_attribute
     end
   end
 
-  def test_create_with_after_initialize
-    wp1 = WholesaleProduct.create(:msrp => 10)
-    assert_equal(10, wp1.msrp)
-    assert_equal(5, wp1.wholesale)
-
-    wp2 = WholesaleProduct.create(:wholesale => 10)
-    assert_equal(20, wp2.msrp)
-    assert_equal(10, wp2.wholesale)
-
-    wp3 = WholesaleProduct.create do |wp|
-      wp.msrp = 10
-    end
-    assert_equal(10, wp3.msrp)
-    assert_equal(5, wp3.wholesale)
+  def test_create_after_initialize_without_block
+    wp = WholesaleProduct.create(:wholesale => 10)
+    assert_equal(20, wp.msrp)
+    assert_equal(10, wp.wholesale)
+  end
 
-    wp4 = WholesaleProduct.create do |wp|
-      wp.wholesale = 10
+  def test_create_after_initialize_with_block
+    wp = WholesaleProduct.create do |w|
+      w.wholesale = 10
     end
-    assert_equal(20, wp4.msrp)
-    assert_equal(10, wp4.wholesale)
+    assert_equal(20, wp.msrp)
+    assert_equal(10, wp.wholesale)
   end
 
   def test_load

activerecord/test/models/wholesale_product.rb

@@ -3,11 +3,7 @@ class WholesaleProduct < ActiveRecord::Base
   after_initialize :set_prices
 
   def set_prices
-    if msrp.nil? && !wholesale.nil?
-      self.msrp = 2 * wholesale
-    elsif !msrp.nil? && wholesale.nil?
-      self.wholesale = msrp / 2
-    end
+    self.msrp = 2 * wholesale if wholesale
   end
 
-end
\ No newline at end of file
+end