# -*- coding: utf-8 -*-
require "sixarm_ruby_xid_test"

describe XID do

  describe "#new" do

    describe "with initialize defaults" do

      it "is a string with the correct length and characters" do
        xid = XID.new
        xid.must_match /\A[0-9a-f]{32}\z/
      end

      it "is always different" do
        seen = Set.new
        99999.times.each{
          xid = XID.new
          seen.include?(xid).must_equal false
          seen.add(xid)
        }
      end

    end

    describe "with valid initialize string" do

      it "sets" do
        s = "1cf2a839c0890bb9be7e9d56b7405a54"
        xid = XID.new(s)
        xid.must_equal(s)
      end

    end

    describe "with invalid initialize string" do

      it "raises" do
        proc { XID.new("invalid") }.must_raise ArgumentError
      end

    end

  end

  describe ".valid" do

    describe "with valid string" do
      it "is true" do
        xid = XID.new("c3d010bbfec046f59c7fe843d32dab32")
        xid.valid?.must_equal true
      end
    end

    describe "with invalid string" do
      it "never gets called because it fails to create an xid" do
        proc { XID.new("abc") }.must_raise ArgumentError
      end
    end

  end

  describe "#valid" do

    describe "with valid string" do
      it "is true" do
        XID.valid?("c3d010bbfec046f59c7fe843d32dab32").must_be_same_as true
      end
    end

    describe "with invalid string" do
      it "is false" do
        XID.valid?("abc").must_be_same_as false
      end
    end

  end

  describe "#digest" do

    it "digests" do
      xid  = XID.new
      xid.digest.must_match /\A[0-9a-f]{64}\z/
    end

  end

  describe ".digest" do

    it "digests" do
      XID.digest("foo").must_match /\A[0-9a-f]{64}\z/
    end

  end

  describe ".parse" do

    it "converts to lower case" do
      XID.parse("C3D010BBFEC046F59C7FE843D32DAB32").must_equal "c3d010bbfec046f59c7fe843d32dab32"
    end

    it "deletes non-hex characters" do
      XID.parse("!!c3d010bb-fec0-46f59c7f-e843d32dab32!!").must_equal "c3d010bbfec046f59c7fe843d32dab32"
    end

    it "chops at 32 characters" do
      XID.parse("c3d010bbfec046f59c7fe843d32dab32aaaaaaaaa").must_equal "c3d010bbfec046f59c7fe843d32dab32"
    end

    it "raises if the string is invalid" do
      proc { XID.parse("abc") }.must_raise ArgumentError
    end

  end

end