Test of log2 helper math function

gistfile1.rb

require 'spec_helper'

describe UtilsLogic::Math do
  describe ".log2" do
    subject {UtilsLogic::Math.log2(number)}

    context "usual case" do
      let(:number) {128}
      it {should == 7}
    end

    context "edge case" do
      let(:number) {1}
      it {should == 0}
    end
  end
end

describe UtilsLogic::Date do
  describe ".age" do
    let(:date) {Date.parse(str_date)}
    let(:now_date) {Date.parse(str_now_date)}
    subject {UtilsLogic::Date.age(date, now_date)}

    context "normal case: birthday was in this year" do
      let(:str_date)     {"1983-04-23"}
      let(:str_now_date) {"2011-05-13"}

      it {should == 28}
    end

    context "normal case: birthday will be in this year" do
      let(:str_date)     {"1983-06-23"}
      let(:str_now_date) {"2011-05-13"}

      it {should == 27}
    end

    context "edge case: birthday is today" do
      let(:str_date)     {"1983-05-13"}
      let(:str_now_date) {"2011-05-13"}

      it {should == 28}
    end

    context "edge case: birthday was yesterday" do
      let(:str_date)     {"1983-05-12"}
      let(:str_now_date) {"2011-05-13"}

      it {should == 28}
    end

    context "edge case: birthday will be tomorrow" do
      let(:str_date)     {"1983-05-14"}
      let(:str_now_date) {"2011-05-13"}

      it {should == 27}
    end
  end
end