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require "abstract_unit"
require "active_support/core_ext/object/blank"
class BlankTest < ActiveSupport::TestCase
class EmptyTrue
def empty?
0
end
end
class EmptyFalse
def empty?
nil
end
end
BLANK = [ EmptyTrue.new, nil, false, "", " ", " \n\t \r ", " ", "\u00a0", [], {} ]
NOT = [ EmptyFalse.new, Object.new, true, 0, 1, "a", [nil], { nil => 0 }, Time.now ]
def test_blank
BLANK.each { |v| assert_equal true, v.blank?, "#{v.inspect} should be blank" }
NOT.each { |v| assert_equal false, v.blank?, "#{v.inspect} should not be blank" }
end
def test_present
BLANK.each { |v| assert_equal false, v.present?, "#{v.inspect} should not be present" }
NOT.each { |v| assert_equal true, v.present?, "#{v.inspect} should be present" }
end
def test_presence
BLANK.each { |v| assert_nil v.presence, "#{v.inspect}.presence should return nil" }
NOT.each { |v| assert_equal v, v.presence, "#{v.inspect}.presence should return self" }
end
end
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