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Groups > comp.lang.java.programmer > #29633

Re: in1To10, a simple test plan

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On 10/08/14 17:01, Eric Sosman wrote:
> On 8/10/2014 11:43 AM, lipska the kat wrote:
>> [...]
>> public class In1To10 {
>>
>>     static boolean in1To10(int n, boolean outsideMode){
>>        if(n == 1 || n == 10){
>>           return true;
>>        }
>>        else{
>>           return (n > 1 && n < 10) ^ outsideMode;
>>        }
>>     }
>>
>>     public static void main(String[] args){
>>        boolean outsideMode = true;
>>                                                     //Expected:  Actual:
>>        System.out.println(in1To10(1, outsideMode));   //true    true
>>        System.out.println(in1To10(1, !outsideMode));  //true    true
>>        System.out.println(in1To10(10, outsideMode));  //true    true
>>        System.out.println(in1To10(10, !outsideMode)); //true    true
>>        System.out.println(in1To10(0, outsideMode));   //true    true
>>        System.out.println(in1To10(0, !outsideMode));  //false    false
>>        System.out .println(in1To10(-1, outsideMode)); //true    true
>>        System.out.println(in1To10(-1, !outsideMode)); //false    false
>>        System.out.println(in1To10(2, outsideMode));   //false    false
>>        System.out.println(in1To10(2, !outsideMode));  //true    true
>>        System.out.println(in1To10(5, outsideMode));   //false    false
>>        System.out.println(in1To10(5, !outsideMode));  //true     true
>>        System.out.println(in1To10(9, outsideMode));   //false    false
>>        System.out.println(in1To10(9, !outsideMode));  //true     true
>>        System.out.println(in1To10(11, outsideMode));  //true     true
>>        System.out.println(in1To10(11, !outsideMode)); //false    false
>>        //etc
>>     }
>> }
>
>      While the notion of having a test plan is an excellent one, relying
> on human eyeballs to verify the expected output is tedious and may be
> error-prone.  I'd suggest writing a helper method, something like

I agree, in the real world of course we would probably use a test 
framework, something like JUnit perhaps as part of our 'agile' 
development process ... I was big into agile for a while, pair 
programming, client representatives, write the test before the code etc 
whatever happened to agile, is it still 'in favour'?

Retirement can be a bitch, the garden needs attention NOW, so I'll have 
to leave reading that paper on process until later etc etc.


-- 
lipska the kat - treacherous feline.
Proudly nominated for IPOTY 2014 - LIGAF
GNU/Linux user #560883 - linuxcounter.net

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in1To10 cdalten@gmail.com - 2014-08-09 12:12 -0700
  Re: in1To10 Jeff Higgins <jeff@invalid.invalid> - 2014-08-09 15:58 -0400
  Re: in1To10 Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-09 16:13 -0400
  Re: in1To10 Marcel Mueller <news.5.maazl@spamgourmet.org> - 2014-08-09 22:56 +0200
    Re: in1To10 Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-09 17:02 -0400
      Re: in1To10 Marcel Mueller <news.5.maazl@spamgourmet.org> - 2014-08-09 23:43 +0200
        Re: in1To10 Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-09 19:49 -0400
        Re: in1To10 Torsten Kirschner <torsten@kirschner.no> - 2014-08-10 16:59 +0200
          Re: in1To10 Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-10 11:33 -0400
            Re: in1To10 Torsten Kirschner <torsten@kirschner.no> - 2014-08-11 22:23 +0200
            Re: in1To10 Gene Wirchenko <genew@telus.net> - 2014-08-12 11:10 -0700
              Re: in1To10 Arne Vajhøj <arne@vajhoej.dk> - 2014-08-19 16:54 -0400
                Re: in1To10 Gene Wirchenko <genew@telus.net> - 2014-08-20 10:36 -0700
            Re: in1To10 Arne Vajhøj <arne@vajhoej.dk> - 2014-08-19 16:53 -0400
  Re: in1To10 cdalten@gmail.com - 2014-08-09 18:35 -0700
    Re: in1To10 Jeff Higgins <jeff@invalid.invalid> - 2014-08-09 22:13 -0400
    Re: in1To10 Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-09 22:23 -0400
    Re: in1To10 Jeff Higgins <jeff@invalid.invalid> - 2014-08-10 12:07 -0400
  Re: in1To10 Mike Amling <mamling@chaff.us> - 2014-08-10 00:29 -0500
  Re: in1To10 "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-08-10 13:53 +0100
    Re: in1To10 Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-10 09:48 -0400
      Re: in1To10 "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-08-10 15:01 +0100
        Re: in1To10 Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-10 10:32 -0400
          Re: in1To10 "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-08-10 15:53 +0100
  Re: in1To10 lipska the kat <lipskathekat@example.com> - 2014-08-10 14:07 +0100
  Re: in1To10, a simple test plan lipska the kat <lipskathekat@example.com> - 2014-08-10 16:43 +0100
    Re: in1To10, a simple test plan Eric Sosman <esosman@comcast-dot-net.invalid> - 2014-08-10 12:01 -0400
      Re: in1To10, a simple test plan lipska the kat <lipskathekat@example.com> - 2014-08-10 17:41 +0100
      Re: in1To10, a simple test plan Arne Vajhøj <arne@vajhoej.dk> - 2014-08-19 16:57 -0400
  Re: in1To10 Roedy Green <see_website@mindprod.com.invalid> - 2014-08-12 02:59 -0700

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