public void GetFirstNumTest()
        {
            JobCrawler jobCrawler = new JobCrawler("");

            Assert.AreEqual(30000, jobCrawler.GetFirstNum("月薪30000~50000"));
            Assert.AreEqual(30000, jobCrawler.GetFirstNum("月薪30,000~50,000"));
            Assert.AreEqual(800000, jobCrawler.GetFirstNum("年薪80,0000"));
            Assert.AreEqual(900000, jobCrawler.GetFirstNum("年薪90,0000~100,0000"));
            Assert.AreEqual(1000000, jobCrawler.GetFirstNum("年薪~100,0000"));
        }