1 files changed, 105 insertions, 0 deletions
diff --git a/activerecord/test/cases/validations/presence_validation_test.rb b/activerecord/test/cases/validations/presence_validation_test.rb
new file mode 100644
index 0000000000..63c3f67da2
--- /dev/null
+++ b/activerecord/test/cases/validations/presence_validation_test.rb
@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+require "cases/helper"
+require "models/man"
+require "models/face"
+require "models/interest"
+require "models/speedometer"
+require "models/dashboard"
+
+class PresenceValidationTest < ActiveRecord::TestCase
+  class Boy < Man; end
+
+  repair_validations(Boy)
+
+  def test_validates_presence_of_non_association
+    Boy.validates_presence_of(:name)
+    b = Boy.new
+    assert_predicate b, :invalid?
+
+    b.name = "Alex"
+    assert_predicate b, :valid?
+  end
+
+  def test_validates_presence_of_has_one
+    Boy.validates_presence_of(:face)
+    b = Boy.new
+    assert b.invalid?, "should not be valid if has_one association missing"
+    assert_equal 1, b.errors[:face].size, "validates_presence_of should only add one error"
+  end
+
+  def test_validates_presence_of_has_one_marked_for_destruction
+    Boy.validates_presence_of(:face)
+    b = Boy.new
+    f = Face.new
+    b.face = f
+    assert_predicate b, :valid?
+
+    f.mark_for_destruction
+    assert_predicate b, :invalid?
+  end
+
+  def test_validates_presence_of_has_many_marked_for_destruction
+    Boy.validates_presence_of(:interests)
+    b = Boy.new
+    b.interests << [i1 = Interest.new, i2 = Interest.new]
+    assert_predicate b, :valid?
+
+    i1.mark_for_destruction
+    assert_predicate b, :valid?
+
+    i2.mark_for_destruction
+    assert_predicate b, :invalid?
+  end
+
+  def test_validates_presence_doesnt_convert_to_array
+    speedometer = Class.new(Speedometer)
+    speedometer.validates_presence_of :dashboard
+
+    dash = Dashboard.new
+
+    # dashboard has to_a method
+    def dash.to_a; ["(/)", '(\)']; end
+
+    s = speedometer.new
+    s.dashboard = dash
+
+    assert_nothing_raised { s.valid? }
+  end
+
+  def test_validates_presence_of_virtual_attribute_on_model
+    repair_validations(Interest) do
+      Interest.send(:attr_accessor, :abbreviation)
+      Interest.validates_presence_of(:topic)
+      Interest.validates_presence_of(:abbreviation)
+
+      interest = Interest.create!(topic: "Thought Leadering", abbreviation: "tl")
+      assert_predicate interest, :valid?
+
+      interest.abbreviation = ""
+
+      assert_predicate interest, :invalid?
+    end
+  end
+
+  def test_validations_run_on_persisted_record
+    repair_validations(Interest) do
+      interest = Interest.new
+      interest.save!
+      assert_predicate interest, :valid?
+
+      Interest.validates_presence_of(:topic)
+
+      assert_not_predicate interest, :valid?
+    end
+  end
+
+  def test_validates_presence_with_on_context
+    repair_validations(Interest) do
+      Interest.validates_presence_of(:topic, on: :required_name)
+      interest = Interest.new
+      interest.save!
+      assert_not interest.valid?(:required_name)
+    end
+  end
+end