1 files changed, 99 insertions, 0 deletions
diff --git a/activerecord/test/cases/validations/association_validation_test.rb b/activerecord/test/cases/validations/association_validation_test.rb
new file mode 100644
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+++ b/activerecord/test/cases/validations/association_validation_test.rb
@@ -0,0 +1,99 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+require "models/topic"
+require "models/reply"
+require "models/man"
+require "models/interest"
+
+class AssociationValidationTest < ActiveRecord::TestCase
+  fixtures :topics
+
+  repair_validations(Topic, Reply)
+
+  def test_validates_associated_many
+    Topic.validates_associated(:replies)
+    Reply.validates_presence_of(:content)
+    t = Topic.create("title" => "uhohuhoh", "content" => "whatever")
+    t.replies << [r = Reply.new("title" => "A reply"), r2 = Reply.new("title" => "Another reply", "content" => "non-empty"), r3 = Reply.new("title" => "Yet another reply"), r4 = Reply.new("title" => "The last reply", "content" => "non-empty")]
+    assert_not_predicate t, :valid?
+    assert_predicate t.errors[:replies], :any?
+    assert_equal 1, r.errors.count  # make sure all associated objects have been validated
+    assert_equal 0, r2.errors.count
+    assert_equal 1, r3.errors.count
+    assert_equal 0, r4.errors.count
+    r.content = r3.content = "non-empty"
+    assert_predicate t, :valid?
+  end
+
+  def test_validates_associated_one
+    Reply.validates :topic, associated: true
+    Topic.validates_presence_of(:content)
+    r = Reply.new("title" => "A reply", "content" => "with content!")
+    r.topic = Topic.create("title" => "uhohuhoh")
+    assert_not_predicate r, :valid?
+    assert_predicate r.errors[:topic], :any?
+    r.topic.content = "non-empty"
+    assert_predicate r, :valid?
+  end
+
+  def test_validates_associated_marked_for_destruction
+    Topic.validates_associated(:replies)
+    Reply.validates_presence_of(:content)
+    t = Topic.new
+    t.replies << Reply.new
+    assert_predicate t, :invalid?
+    t.replies.first.mark_for_destruction
+    assert_predicate t, :valid?
+  end
+
+  def test_validates_associated_without_marked_for_destruction
+    reply = Class.new do
+      def valid?
+        true
+      end
+    end
+    Topic.validates_associated(:replies)
+    t = Topic.new
+    t.define_singleton_method(:replies) { [reply.new] }
+    assert_predicate t, :valid?
+  end
+
+  def test_validates_associated_with_custom_message_using_quotes
+    Reply.validates_associated :topic, message: "This string contains 'single' and \"double\" quotes"
+    Topic.validates_presence_of :content
+    r = Reply.create("title" => "A reply", "content" => "with content!")
+    r.topic = Topic.create("title" => "uhohuhoh")
+    assert_not_operator r, :valid?
+    assert_equal ["This string contains 'single' and \"double\" quotes"], r.errors[:topic]
+  end
+
+  def test_validates_associated_missing
+    Reply.validates_presence_of(:topic)
+    r = Reply.create("title" => "A reply", "content" => "with content!")
+    assert_not_predicate r, :valid?
+    assert_predicate r.errors[:topic], :any?
+
+    r.topic = Topic.first
+    assert_predicate r, :valid?
+  end
+
+  def test_validates_presence_of_belongs_to_association__parent_is_new_record
+    repair_validations(Interest) do
+      # Note that Interest and Man have the :inverse_of option set
+      Interest.validates_presence_of(:man)
+      man = Man.new(name: "John")
+      interest = man.interests.build(topic: "Airplanes")
+      assert interest.valid?, "Expected interest to be valid, but was not. Interest should have a man object associated"
+    end
+  end
+
+  def test_validates_presence_of_belongs_to_association__existing_parent
+    repair_validations(Interest) do
+      Interest.validates_presence_of(:man)
+      man = Man.create!(name: "John")
+      interest = man.interests.build(topic: "Airplanes")
+      assert interest.valid?, "Expected interest to be valid, but was not. Interest should have a man object associated"
+    end
+  end
+end