Functional testing (also known as black-box testing), is a software testing approach in which:
1. the tester will have a user perspective in mind,
2. not knowing and doesn't mind how the program works.
3. Input and output are the only things that matter.
4. The tester acts as if he/she is the final user of the program.
On the other hand, Structural testing (also known as white-box testing), is a software testing approach in which:
1. the tester will have a developer perspective in mind,
2. knowing how the program works behind the scene,
3. such that the test will test all algorithm paths in the program.
4. Everything does matter.
5. The tester acts as a developer of the program who knows the internal structure of the program very well.
1. the tester will have a user perspective in mind,
2. not knowing and doesn't mind how the program works.
3. Input and output are the only things that matter.
4. The tester acts as if he/she is the final user of the program.
On the other hand, Structural testing (also known as white-box testing), is a software testing approach in which:
1. the tester will have a developer perspective in mind,
2. knowing how the program works behind the scene,
3. such that the test will test all algorithm paths in the program.
4. Everything does matter.
5. The tester acts as a developer of the program who knows the internal structure of the program very well.
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