CODEWITHSUNDEEP
testingcontinuous-integrationspecifications
Plouff
Plouff

Reputation: 3470

Continuous improvement: Is it possible to specify the tests in advance?

I am used to "old fashioned" waterfall development cycles. For a new project, continuous integration seems to better fit our need.

In waterfall, you have to specify the tests you will to implement in advance.

My questions:

Many thanks for your help.

Upvotes: 0

Views: 63

Answers (1)

eckad158
eckad158

Reputation: 435

At university we were taught that "test driven development" makes sense, especially if there is a proper coding specification.

If you're not able to write tests before coding -> the coding spec should be more specific / has issues.

I usually write unit-tests based on the coding spec for my java classes, which will afterwards be integrated and executed on our jenkins continuous integration server.

Forgive me if i am wrong but thats what i learned...

It always depends on the complexity of the required java classes, the trivial "domain" classes do not need a big specification info

In most cases we try to specify how the Classes or Methods should work (in words) and also write down the some example values.

Lets say you should write a method that should check if a value is in a specifig range:

// Example Specification:
// the method 'checkIfItsInRange' should return true when : the input lies within the range and it should be devidable by the distance value 
// Lets say the range goes from -30,00 to +30,00 with a distance from 0,25
// valid values :30, -30, 15.25, 15.50, 17.75 etc. -> return true
// invalid : -31, -30.01, +30.08, 0.4 etc. -> return false
// MissingParameterException when one of the Parameters is null

public boolean checkIfItsInRange throws MissingParameterException (BigDecimal from, BigDecimal to, BigDecimal distance, BigDecimal input) {
        // TODO implement depending on spec.
}

In this case you can already write some Unittests before you started to implement the method itself.

I hope that makes things a bit clearer.

Upvotes: 1

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