spec/ruby/library/rbconfig/sizeof/limits_spec.rb


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require_relative '../../../spec_helper'
require 'rbconfig/sizeof'

ruby_version_is "2.5" do
  describe "RbConfig::LIMITS" do
    it "is a Hash" do
      RbConfig::LIMITS.should be_kind_of(Hash)
    end

    it "has string keys and numeric values" do
      RbConfig::LIMITS.each do |key, value|
        key.should be_kind_of String
        value.should be_kind_of Numeric
      end
    end

    it "contains FIXNUM_MIN and FIXNUM_MAX" do
      RbConfig::LIMITS["FIXNUM_MIN"].should < 0
      RbConfig::LIMITS["FIXNUM_MAX"].should > 0
    end

    it "contains CHAR_MIN and CHAR_MAX" do
      RbConfig::LIMITS["CHAR_MIN"].should <= 0
      RbConfig::LIMITS["CHAR_MAX"].should > 0
    end

    it "contains SHRT_MIN and SHRT_MAX" do
      RbConfig::LIMITS["SHRT_MIN"].should == -32768
      RbConfig::LIMITS["SHRT_MAX"].should == 32767
    end

    it "contains INT_MIN and INT_MAX" do
      RbConfig::LIMITS["INT_MIN"].should < 0
      RbConfig::LIMITS["INT_MAX"].should > 0
    end

    it "contains LONG_MIN and LONG_MAX" do
      RbConfig::LIMITS["LONG_MIN"].should < 0
      RbConfig::LIMITS["LONG_MAX"].should > 0
    end
  end
end