Äquivalenz-Klassen II

Klasse Beschreibung Erwartete Ausgabe

1 a, b, c W AND > 0 AND tr AND

(a ≠ b ≠ c) AND <= maxint
scalene

2 a, b, c W AND > 0 AND tr AND

(a = b = c) AND <= maxint
equilateral

3 a, b, c W AND > 0 AND tr AND

NOT (a ≠ b ≠ c) AND

NOT (a = b = c) AND

<= maxint
isosceles

4 a, b, c W AND > 0 AND

NOT tr AND <= maxint
no triangle

5 a, b, c W AND > 0 AND tr AND

NOT <= maxint
invalid input

6 a, b, c W AND NOT > 0
non-positive length(s)

7 a, b, c NOT W AND > 0 AND tr
invalid input

8 a, b, c NOT NUMBER
invalid input

In diesem Beispiel hängt die erwartete Ausgabe nur von der Äquivalenzklasse ab. Dies ist natürlich nicht zutreffend im allgemeinen Falle, bei dem für jeden Testfall einzeln die zu erwartende Ausgabe anzugeben ist.


Klasse	Beschreibung	Erwartete Ausgabe

1	a, b, c W AND > 0 AND tr AND
	(a ≠ b ≠ c) AND <= maxint	scalene

2	a, b, c W AND > 0 AND tr AND
	(a = b = c) AND <= maxint	equilateral

3	a, b, c W AND > 0 AND tr AND
	NOT (a ≠ b ≠ c) AND
	NOT (a = b = c) AND
	<= maxint	isosceles

4	a, b, c W AND > 0 AND
	NOT tr AND <= maxint	no triangle

5	a, b, c W AND > 0 AND tr AND
	NOT <= maxint	invalid input

6	a, b, c W AND NOT > 0	non-positive length(s)

7	a, b, c NOT W AND > 0 AND tr	invalid input

8	a, b, c NOT NUMBER	invalid input