Solved

# Hopefully "fun" problem to solve - matrix of test values

Posted on 2012-04-05
171 Views
I need some help conceptualizing (and realizing) a matrix of test values.

I want to test all possible permutations for a series of 6 permissions.  Each permission can be true or false.

I think the math is 2^6 or 64 different combinations possible:

1,0,0,0,0,0

would represent granting "Can Create" permission and no permissions on the rest.

1,1,0,0,0,0 would grant CanCreate, CanRead and no on the rest.

I want to cover every combination.

I am looking to create a simple matrix for the combinations, just a CSV file of sorts.

Here is what I have so far, but what is the correct way to do this so that no test values repeat and all combinations are represented?

If I find the answer I'll return here and post it.  Until then I await your answer, gurus!

``````private void buttonGenerateCSV_Click(object sender, EventArgs e)
{
string[] validvals = textBoxValidValues.Text.Split(',');

foreach (string hs in headervals)
{
textBoxCSV.Text += hs;
foreach (string s in validvals)
{
textBoxCSV.Text += s;
}
}

}
``````
0
Question by:knowlton
• 2
• 2

LVL 85

Accepted Solution

Mike Tomlinson earned 500 total points
ID: 37813836
Here's one way:
``````using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void buttonGenerateCSV_Click(object sender, EventArgs e)
{
textBoxCSV.Clear();
Revision rev = new Revision("01", "000000");
while (rev.CurrentRevision.Length == 6)
{
string combo = String.Join(",", rev.CurrentRevision.ToCharArray());
textBoxCSV.AppendText(combo + Environment.NewLine);
rev.NextRevision();
}
}
}

public class Revision
{

private string chars;
private char[] values;

private System.Text.StringBuilder curRevision;

public Revision()
{
this.DefaultRevision();
}

public Revision(string validChars)
{
if (validChars.Length > 0)
{
chars = validChars.ToUpper();
values = chars.ToCharArray();
curRevision = new System.Text.StringBuilder(values[0]);
}
else
{
this.DefaultRevision();
}
}

public Revision(string validChars, string startingRevision)
: this(validChars)
{
curRevision = new System.Text.StringBuilder(startingRevision.ToUpper());
int i = 0;
for (i = 0; i <= curRevision.Length - 1; i++)
{
if (Array.IndexOf(values, curRevision[i]) == -1)
{
curRevision = new System.Text.StringBuilder(values[0]);
break;
}
}
}

private void DefaultRevision()
{
chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
values = chars.ToCharArray();
curRevision = new System.Text.StringBuilder(values[0]);
}

public string ValidChars
{
get { return chars; }
}

public string CurrentRevision
{
get { return curRevision.ToString(); }
}

public string NextRevision(int numRevisions = 1)
{
bool forward = (numRevisions > 0);
numRevisions = Math.Abs(numRevisions);
int i = 0;
for (i = 1; i <= numRevisions; i++)
{
if (forward)
{
this.Increment();
}
else
{
this.Decrement();
}
}
return this.CurrentRevision;
}

private void Increment()
{
char curChar = curRevision[curRevision.Length - 1];
int index = Array.IndexOf(values, curChar);
if (index < (chars.Length - 1))
{
index = index + 1;
curRevision[curRevision.Length - 1] = values[index];
}
else
{
curRevision[curRevision.Length - 1] = values[0];
int i = 0;
int startPosition = curRevision.Length - 2;
for (i = startPosition; i >= 0; i += -1)
{
curChar = curRevision[i];
index = Array.IndexOf(values, curChar);
if (index < (values.Length - 1))
{
index = index + 1;
curRevision[i] = values[index];
return;
}
else
{
curRevision[i] = values[0];
}
}
curRevision.Insert(0, values[0]);
}
}

private void Decrement()
{
char curChar = curRevision[curRevision.Length - 1];
int index = Array.IndexOf(values, curChar);
if (index > 0)
{
index = index - 1;
curRevision[curRevision.Length - 1] = values[index];
}
else
{
curRevision[curRevision.Length - 1] = values[values.Length - 1];
int i = 0;
int startPosition = curRevision.Length - 2;
for (i = startPosition; i >= 0; i += -1)
{
curChar = curRevision[i];
index = Array.IndexOf(values, curChar);
if (index > 0)
{
index = index - 1;
curRevision[i] = values[index];
return;
}
else
{
curRevision[i] = values[values.Length - 1];
}
}
curRevision.Remove(0, 1);
if (curRevision.Length == 0)
{
curRevision.Insert(0, values[0]);
}
}
}

}

}
``````
0

LVL 5

Author Comment

ID: 37816189
Here was my eventual solution:

``````using System;
using System.Linq;
using System.Windows.Forms;

namespace CSharpCodeGenAndSamples
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

{
string binValue = Convert.ToString(dectoconvert, 2);

int padlen = binValue.Length;

{
binValue = "0" + binValue;
}

return binValue;
}

private int PowerOf(int num, int basenum)
{
int newnum = num;

for (int i = 1; i < basenum; i++)
{
newnum *= num;
}

return newnum;
}

private string InjectCharsIntoExistingString(string origstring, string chartoinject)
{
int strlen = origstring.Length;

string newstring = "";

for (int i = 0; i < strlen; i++)
{
newstring += origstring[i] + chartoinject;
}

newstring = newstring.Substring(0, newstring.Length - 1);
return newstring;
}

private void ButtonGenerateCsvClick(object sender, EventArgs e)
{
string[] validvals = textBoxValidValues.Text.Split(',');

int countofvalidvals = validvals.Count();
int power = PowerOf(countofvalidvals, countofheaders);

string headercols = headervals.Aggregate("", (current, hs) => current + (hs + ","));

textBoxCSV.Text += headercols + Environment.NewLine;

for (int i = 0; i < power; i++)
{
string binasstring = ReturnDecAsBinStringWithPadding(i, 6);
string arrayofbinvals = InjectCharsIntoExistingString(binasstring, ",");

textBoxCSV.Text += arrayofbinvals + Environment.NewLine;
//string[] newarrayofbinvals = arrayofbinvals.Split(',');
}

foreach (string s in validvals)
{
textBoxCSV.Text += s;
foreach (string hs in headervals)
{
textBoxCSV.Text += hs;
}
}
}
}
}
``````
0

LVL 5

Author Closing Comment

ID: 37816192
Thank you for the example and for your time spent on this!

Tom
0

LVL 85

Expert Comment

ID: 37816211
No problem.  Definitely many ways to approach this problem...
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

### Suggested Solutions

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
Many of us here at EE write code. Many of us write exceptional code; just as many of us write exception-prone code. As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. From database errors, t…
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

#### 803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.