Whitebox techniques - Condition Testing and Condition Coverage - prepare yourself for the ISTQB advanced exam for Technical Test Analyst and Test Analyst.

1. Condition Testing and Condition Coverage
with
Prepare yourself for the ISTQB exam

2. Dictionary
condition: A logical expression that can be evaluated as True or False, e.g. A>B.
See also test condition.
condition outcome: The evaluation of a condition to True or False.
condition testing: A white box test design technique in which test cases are
designed to execute condition outcomes.
compound condition: Two or more single conditions joined by means of a logical
operator (AND, OR or XOR), e.g. ‘A>B AND C>1000’.
condition coverage: The percentage of condition outcomes that have been
exercised by a test suite. 100% condition coverage requires each single condition in
every decision statement to be tested as True and False.
From „Standard glossary of terms used in Software Testing”
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3. What is…?
Condition coverage, there are stronger levels of
structural coverage beyond decision coverage, for
example, condition coverage.
From „Certified Tester Foundation Level Syllabus (version 2011)”
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4. Rules!
branch condition = condition
branch condition coverage = condition coverage
From „Certified Tester Foundation Level Syllabus (version 2011)”
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5. Examples with sequential code
hiz = xs + pkl;
gff = sy - dr / nxa;
No condition to cover.
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6. Examples with IF
IF (iuc && fow)
{
t = jcc + iky - hhs; In order to cover all
} conditions, you need
2 test cases.
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7. Examples with IF ELSE
IF (r && ha)
{
f = utx + g;
} In order to cover all
ELSE conditions, you need
{ 2 test cases.
mq = nxc * bff * cb;
}
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8. Examples with SWITCH
SWITCH (ck)
{
CASE 0: In order to cover all
jm = c - h; conditions, you need
break; 3 test cases.
CASE 1:
si = pkb * t;
break;
CASE 2:
vh = ocd * fq;
break;
}
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9. Examples with WHILE
In order to cover all
au = -6; conditions, you need
WHILE (ojc && ar || au < 8) 2 test cases.
{
ys = dsk - mfg;
au++;
}
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10. Examples with FOR
FOR (kv = 8; kv > -2; kv--)
{
pl = gvp * ge; In order to cover all
} conditions, you need
1 test case.
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11. More examples
IF (e || u)
{
IF (bp || oxq || i)
{ In order to cover all
IF (gzy || f) conditions, you need
{
3 test cases.
n = yo / ocx - uf;
}
}
}
IF (mt && vdi)
{
IF (oye || cos || yxi)
{
IF (uc || nm || mlk)
{
duz = x - pae - tct;
}
}
}
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12. More examples
IF (zw || uzq && ppv)
{
e = vqg / obq + qrb; In order to cover all
} conditions, you need
ELSE 2 test cases.
{
IF (fl || z)
{
j = qki / on - fbj;
}
ELSE
{
ab = wy * jb;
}
}
ixr = ms + d;
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13. More examples
l = jcy * ykj - dp;
FOR (qyt = 1; qyt < 8; qyt++)
{
ew = 15; In order to cover all
WHILE (d || jw || ew > 2) conditions, you need
{ 2 test cases.
FOR (zw = 9; zw < 16; zw++)
{
syg = v + ha / cls;
}
ew--;
}
}
mmb = wte * il;
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14. More examples with…
TestCompetence allows you to generate sample pseudocode to pracitse whitebox
techniques including condition coverage…
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15. More examples with…
TestCompetence allows you to generate sample pseudocode to pracitse whitebox
techniques including condition coverage…
Choose the
maximum
number of
Choose the instructions
level of per level.
nested
statements. Choose the
type of
Choose the coverage
type of from:
statement. statement,
decision,
codition,
multiple
condition,
GENERATE and modified
your exercise. condition.
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16. More examples with…
You get pseudocode and sample answers just like during a regular ISTQB exam.
Choose the right answer.
Pseudocode
Choose
an answer.
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17. More examples with…
You get pseudocode and sample answers just like during a regular ISTQB exam.
Choose the right answer.
Pseudocode
Your answer
Right answer
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18. How to get it…
Visit TestCompetence.com and get one for only…
EURO / USD
Unlimited number of exercises during 24 hours!
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19. Check also examples for…
• Statement testing and coverage >>
• Decision testing and coverage >>
• Multiple condition testing and
coverage >>
• Modified condition decision
combination (MC/CD) coverage >>
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