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require "cases/helper"
require "models/topic"
class ValidatesWithTest < ActiveModel::TestCase
def teardown
Topic.clear_validators!
end
ERROR_MESSAGE = "Validation error from validator"
OTHER_ERROR_MESSAGE = "Validation error from other validator"
class ValidatorThatAddsErrors < ActiveModel::Validator
def validate(record)
record.errors[:base] << ERROR_MESSAGE
end
end
class OtherValidatorThatAddsErrors < ActiveModel::Validator
def validate(record)
record.errors[:base] << OTHER_ERROR_MESSAGE
end
end
class ValidatorThatDoesNotAddErrors < ActiveModel::Validator
def validate(record)
end
end
class ValidatorThatValidatesOptions < ActiveModel::Validator
def validate(record)
if options[:field] == :first_name
record.errors[:base] << ERROR_MESSAGE
end
end
end
class ValidatorPerEachAttribute < ActiveModel::EachValidator
def validate_each(record, attribute, value)
record.errors[attribute] << "Value is #{value}"
end
end
class ValidatorCheckValidity < ActiveModel::EachValidator
def check_validity!
raise "boom!"
end
end
test "validation with class that adds errors" do
Topic.validates_with(ValidatorThatAddsErrors)
topic = Topic.new
assert topic.invalid?, "A class that adds errors causes the record to be invalid"
assert topic.errors[:base].include?(ERROR_MESSAGE)
end
test "with a class that returns valid" do
Topic.validates_with(ValidatorThatDoesNotAddErrors)
topic = Topic.new
assert topic.valid?, "A class that does not add errors does not cause the record to be invalid"
end
test "with multiple classes" do
Topic.validates_with(ValidatorThatAddsErrors, OtherValidatorThatAddsErrors)
topic = Topic.new
assert topic.invalid?
assert topic.errors[:base].include?(ERROR_MESSAGE)
assert topic.errors[:base].include?(OTHER_ERROR_MESSAGE)
end
test "with if statements that return false" do
Topic.validates_with(ValidatorThatAddsErrors, if: "1 == 2")
topic = Topic.new
assert topic.valid?
end
test "with if statements that return true" do
Topic.validates_with(ValidatorThatAddsErrors, if: "1 == 1")
topic = Topic.new
assert topic.invalid?
assert topic.errors[:base].include?(ERROR_MESSAGE)
end
test "with unless statements that return true" do
Topic.validates_with(ValidatorThatAddsErrors, unless: "1 == 1")
topic = Topic.new
assert topic.valid?
end
test "with unless statements that returns false" do
Topic.validates_with(ValidatorThatAddsErrors, unless: "1 == 2")
topic = Topic.new
assert topic.invalid?
assert topic.errors[:base].include?(ERROR_MESSAGE)
end
test "passes all configuration options to the validator class" do
topic = Topic.new
validator = Minitest::Mock.new
validator.expect(:new, validator, [{foo: :bar, if: "1 == 1", class: Topic}])
validator.expect(:validate, nil, [topic])
validator.expect(:is_a?, false, [Symbol])
validator.expect(:is_a?, false, [String])
Topic.validates_with(validator, if: "1 == 1", foo: :bar)
assert topic.valid?
validator.verify
end
test "validates_with with options" do
Topic.validates_with(ValidatorThatValidatesOptions, field: :first_name)
topic = Topic.new
assert topic.invalid?
assert topic.errors[:base].include?(ERROR_MESSAGE)
end
test "validates_with each validator" do
Topic.validates_with(ValidatorPerEachAttribute, attributes: [:title, :content])
topic = Topic.new title: "Title", content: "Content"
assert topic.invalid?
assert_equal ["Value is Title"], topic.errors[:title]
assert_equal ["Value is Content"], topic.errors[:content]
end
test "each validator checks validity" do
assert_raise RuntimeError do
Topic.validates_with(ValidatorCheckValidity, attributes: [:title])
end
end
test "each validator expects attributes to be given" do
assert_raise ArgumentError do
Topic.validates_with(ValidatorPerEachAttribute)
end
end
test "each validator skip nil values if :allow_nil is set to true" do
Topic.validates_with(ValidatorPerEachAttribute, attributes: [:title, :content], allow_nil: true)
topic = Topic.new content: ""
assert topic.invalid?
assert topic.errors[:title].empty?
assert_equal ["Value is "], topic.errors[:content]
end
test "each validator skip blank values if :allow_blank is set to true" do
Topic.validates_with(ValidatorPerEachAttribute, attributes: [:title, :content], allow_blank: true)
topic = Topic.new content: ""
assert topic.valid?
assert topic.errors[:title].empty?
assert topic.errors[:content].empty?
end
test "validates_with can validate with an instance method" do
Topic.validates :title, with: :my_validation
topic = Topic.new title: "foo"
assert topic.valid?
assert topic.errors[:title].empty?
topic = Topic.new
assert !topic.valid?
assert_equal ["is missing"], topic.errors[:title]
end
test "optionally pass in the attribute being validated when validating with an instance method" do
Topic.validates :title, :content, with: :my_validation_with_arg
topic = Topic.new title: "foo"
assert !topic.valid?
assert topic.errors[:title].empty?
assert_equal ["is missing"], topic.errors[:content]
end
end
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