axlekb · April 25, 2018 20:10 · Apr 25, 2018 · Apr 11, 2018 · Apr 11, 2018
diff --git a/bug_test.rb b/bug_test.rb
@@ -48,7 +48,7 @@ class Payment < ActiveRecord::Base
 
 class BugTest < Minitest::Test
   def test_numeric_validation
-    payment = Payment.create!(:cash: 2.0)
+    payment = Payment.create!(cash: 2.0)
 
     payment.reload
 

diff --git a/bug_test.rb b/bug_test.rb
@@ -48,8 +48,7 @@ class Payment < ActiveRecord::Base
 
 class BugTest < Minitest::Test
   def test_numeric_validation
-    payment = Payment.create!
-    payment.update_column(:cash, 2.0)
+    payment = Payment.create!(:cash: 2.0)
 
     payment.reload
 

diff --git a/bug_test.rb b/bug_test.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+gem "bundler", "< 1.16"
+
+begin
+  require "bundler/inline"
+rescue LoadError => e
+  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
+  raise e
+end
+
+gemfile(true) do
+  source "https://rubygems.org"
+
+  git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+  gem "pg", "<1.0"
+  #gem "rails", "5.1.4" # success!
+  gem "rails", "5.2.0" # fails!
+end
+
+require "active_record"
+require "minitest/autorun"
+require "logger"
+
+# Ensure backward compatibility with Minitest 4
+Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)
+
+ActiveRecord::Base.establish_connection(
+  adapter: "postgresql",
+  database: "rails_test",
+  username: "user",
+  password: "",
+  host: 'localhost'
+)
+ActiveRecord::Base.logger = Logger.new(STDOUT)
+
+ActiveRecord::Schema.define do
+  create_table :payments, force: true do |t|
+    t.money    :cash
+  end
+end
+
+class Payment < ActiveRecord::Base
+  validates :cash, numericality: true, unless: :new_record?
+end
+
+
+class BugTest < Minitest::Test
+  def test_numeric_validation
+    payment = Payment.create!
+    payment.update_column(:cash, 2.0)
+
+    payment.reload
+
+    assert payment.cash == 2.0
+    assert payment.valid?
+  end
+end