Common verification points for input boxes:
Special characters, long characters, negative values, 0 values, null, and very large values.
If the test subject is time, pay attention to special points: 1970/01/01, February 29
Phenomenon: Enter 9999999999 (10 9s) in the input box, and the page crashes directly
Analysis: It took a long time to find the critical value crash interface through the 2-point method. Finally, it was determined that the critical value 4294967295 is 2 to the 32nd power -1 in the computer, the int32 type used for development, and the development does any processing on the out-of-range values, resulting in Page overflow