class Assert::Assertions::LessThan(PropertyType)

• Assert::Assertions::LessThan(PropertyType)
• Assert::Assertions::Assertion
• Reference
• Object

Overview

Validates a property is less than value.

Example

class Example
  include Assert

  def initialize; end

  @[Assert::LessThan(value: 100)]
  property int32 : Int32 = 95

  @[Assert::LessThan(value: 0.0001_f64)]
  property float : Float64 = 0.000001

  @[Assert::LessThan(value: "X")]
  property string : String = "F"

  @[Assert::LessThan(value: Time.utc(2019, 6, 1))]
  property start_date : Time? = Time.utc(2019, 5, 29)

  @[Assert::LessThan(value: start_date)]
  property end_date : Time?

  @[Assert::LessThan(value: max_value)]
  property getter_property : UInt8 = 250_u8

  def max_value : UInt8
    255_u8
  end
end

Example.new.valid? # => true

NOTE value can be a hard-coded value like 10, the name of another property, a constant, or the name of a method.

NOTE The type of value and the property must match.

NOTE PropertyType can be anything that defines a #< method.

Defined in:

Constructors

• .new(property_name : String, actual : PropertyType, value : PropertyType, message : String? = nil, groups : Array(String)? = nil)

Instance Method Summary

• #default_message_template : String

  Returns the default #message_template to use if no message is provided.

• #message : String

  The message to display if self is not valid.

• #valid? : Bool

  Returns true if a property satisfies self, otherwise false.

Constructor Detail

Instance Method Detail