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Domain Testing: Divide and Conquer - Testing Education

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Look In<br />

Variable Equivalence<br />

classes<br />

Look In<br />

All files in<br />

drive1.<br />

All files in<br />

drive2.<br />

All files in<br />

drive3.<br />

All files in<br />

currently nonexistent<br />

drive<br />

or drive not<br />

having any<br />

storage in it<br />

currently or<br />

corrupt drive.<br />

Test cases<br />

(Best representatives)<br />

A file existing in:<br />

1) drive 1, lowest level<br />

directory<br />

2) drive 1, highest level<br />

directory<br />

A file existing in:<br />

1) drive 2, lowest level<br />

directory<br />

2) drive 2, highest level<br />

directory<br />

A file existing in:<br />

1) drive 3, lowest level<br />

directory<br />

2) drive 3, highest level<br />

directory<br />

Any such drive can be the<br />

best representative<br />

Risks<br />

1) Failure to open files<br />

existing in drive 1 correctly<br />

2) Mish<strong>and</strong>ling of lower <strong>and</strong><br />

upper boundary values.<br />

1) Failure to open files<br />

existing in drive 2 correctly<br />

2) Mish<strong>and</strong>ling of lower<br />

<strong>and</strong> upper boundary values.<br />

1) Failure to open files<br />

existing in drive 3 correctly<br />

2) Mish<strong>and</strong>ling of lower<br />

<strong>and</strong> upper boundary values.<br />

1) Mish<strong>and</strong>ling opening of<br />

files from non-existent<br />

drives or from drives that<br />

do not have any storage in<br />

them currently.

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