Fix test-search initial page number.
Fix test-search initial page number.

Also alert when a result page number is greater than the number of total pages.

approach0/search-engine,t-k-/the-day-after-tomorrow,yzhan018/the-day-after-tomorrow,approach0/search-engine,yzhan018/the-day-after-tomorrow,t-k-/the-day-after-tomorrow,t-k-/the-day-after-tomorrow,approach0/search-engine,yzhan018/the-day-after-tomorrow,yzhan018/the-day-after-tomorrow,yzhan018/the-day-after-tomorrow,t-k-/the-day-after-tomorrow,approach0/search-engine,yzhan018/the-day-after-tomorrow,t-k-/the-day-after-tomorrow,t-k-/the-day-after-tomorrow,yzhan018/the-day-after-tomorrow,t-k-/the-day-after-tomorrow