Poker Game: Unit testing different poker hands without violating DRY principles












0












$begingroup$


I'm currently in the process of refactoring an old poker game which violates many of the SOLID principles.



I was trying to use the TDD approach to refactoring and I found myself having to hard code a player's hand every time I wrote a unit test for a specific poker hand check.



For example, here are the unit tests for a one pair poker hand check:



    [Test]
public void OnePair_IsLowPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Ace),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Five),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsLowerMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Eight),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHigherMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Queen),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Ace),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHighPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Deuce),
new CardDiamond(Rank.Six),
new CardHeart(Rank.Ace),
new CardClub(Rank.Ace)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}


This is what the class diagram (at the project's current stage) looks like:
enter image description here



My question is how I should go about extracting a method (or methods) out of the testHand initialization.










share|improve this question









New contributor




Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • $begingroup$
    Maybe make a "CreateHand()" function that takes a string like "AcAs5dJh3c"?
    $endgroup$
    – AShelly
    1 hour ago










  • $begingroup$
    A CreateHand() is essentially what I'm trying to go for here but I'm not sure how to implement your idea. Can you please share some pseudocode or code?
    $endgroup$
    – Asel S
    1 hour ago










  • $begingroup$
    You also need to post the code you are testing. The tests are worthless without it.
    $endgroup$
    – t3chb0t
    10 mins ago










  • $begingroup$
    By the code that I'm testing, do you mean the code for the OnePair() method? If not, could you please clarify?
    $endgroup$
    – Asel S
    6 mins ago
















0












$begingroup$


I'm currently in the process of refactoring an old poker game which violates many of the SOLID principles.



I was trying to use the TDD approach to refactoring and I found myself having to hard code a player's hand every time I wrote a unit test for a specific poker hand check.



For example, here are the unit tests for a one pair poker hand check:



    [Test]
public void OnePair_IsLowPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Ace),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Five),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsLowerMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Eight),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHigherMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Queen),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Ace),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHighPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Deuce),
new CardDiamond(Rank.Six),
new CardHeart(Rank.Ace),
new CardClub(Rank.Ace)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}


This is what the class diagram (at the project's current stage) looks like:
enter image description here



My question is how I should go about extracting a method (or methods) out of the testHand initialization.










share|improve this question









New contributor




Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$












  • $begingroup$
    Maybe make a "CreateHand()" function that takes a string like "AcAs5dJh3c"?
    $endgroup$
    – AShelly
    1 hour ago










  • $begingroup$
    A CreateHand() is essentially what I'm trying to go for here but I'm not sure how to implement your idea. Can you please share some pseudocode or code?
    $endgroup$
    – Asel S
    1 hour ago










  • $begingroup$
    You also need to post the code you are testing. The tests are worthless without it.
    $endgroup$
    – t3chb0t
    10 mins ago










  • $begingroup$
    By the code that I'm testing, do you mean the code for the OnePair() method? If not, could you please clarify?
    $endgroup$
    – Asel S
    6 mins ago














0












0








0





$begingroup$


I'm currently in the process of refactoring an old poker game which violates many of the SOLID principles.



I was trying to use the TDD approach to refactoring and I found myself having to hard code a player's hand every time I wrote a unit test for a specific poker hand check.



For example, here are the unit tests for a one pair poker hand check:



    [Test]
public void OnePair_IsLowPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Ace),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Five),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsLowerMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Eight),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHigherMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Queen),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Ace),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHighPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Deuce),
new CardDiamond(Rank.Six),
new CardHeart(Rank.Ace),
new CardClub(Rank.Ace)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}


This is what the class diagram (at the project's current stage) looks like:
enter image description here



My question is how I should go about extracting a method (or methods) out of the testHand initialization.










share|improve this question









New contributor




Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




I'm currently in the process of refactoring an old poker game which violates many of the SOLID principles.



I was trying to use the TDD approach to refactoring and I found myself having to hard code a player's hand every time I wrote a unit test for a specific poker hand check.



For example, here are the unit tests for a one pair poker hand check:



    [Test]
public void OnePair_IsLowPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Ace),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Five),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsLowerMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Eight),
new CardSpade(Rank.Ace),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Jack),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHigherMiddlePair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Queen),
new CardDiamond(Rank.Ace),
new CardHeart(Rank.Ace),
new CardClub(Rank.Three)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}

[Test]
public void OnePair_IsHighPair_ReturnsTrue()
{
SuperCard testHand =
{
new CardClub(Rank.Jack),
new CardSpade(Rank.Deuce),
new CardDiamond(Rank.Six),
new CardHeart(Rank.Ace),
new CardClub(Rank.Ace)
};

bool result = PokerHandEvaluator.OnePair(testHand);

Assert.That(result == true);

}


This is what the class diagram (at the project's current stage) looks like:
enter image description here



My question is how I should go about extracting a method (or methods) out of the testHand initialization.







c# unit-testing nunit






share|improve this question









New contributor




Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 10 mins ago









t3chb0t

35k753124




35k753124






New contributor




Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 1 hour ago









Asel SAsel S

165




165




New contributor




Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Asel S is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • $begingroup$
    Maybe make a "CreateHand()" function that takes a string like "AcAs5dJh3c"?
    $endgroup$
    – AShelly
    1 hour ago










  • $begingroup$
    A CreateHand() is essentially what I'm trying to go for here but I'm not sure how to implement your idea. Can you please share some pseudocode or code?
    $endgroup$
    – Asel S
    1 hour ago










  • $begingroup$
    You also need to post the code you are testing. The tests are worthless without it.
    $endgroup$
    – t3chb0t
    10 mins ago










  • $begingroup$
    By the code that I'm testing, do you mean the code for the OnePair() method? If not, could you please clarify?
    $endgroup$
    – Asel S
    6 mins ago


















  • $begingroup$
    Maybe make a "CreateHand()" function that takes a string like "AcAs5dJh3c"?
    $endgroup$
    – AShelly
    1 hour ago










  • $begingroup$
    A CreateHand() is essentially what I'm trying to go for here but I'm not sure how to implement your idea. Can you please share some pseudocode or code?
    $endgroup$
    – Asel S
    1 hour ago










  • $begingroup$
    You also need to post the code you are testing. The tests are worthless without it.
    $endgroup$
    – t3chb0t
    10 mins ago










  • $begingroup$
    By the code that I'm testing, do you mean the code for the OnePair() method? If not, could you please clarify?
    $endgroup$
    – Asel S
    6 mins ago
















$begingroup$
Maybe make a "CreateHand()" function that takes a string like "AcAs5dJh3c"?
$endgroup$
– AShelly
1 hour ago




$begingroup$
Maybe make a "CreateHand()" function that takes a string like "AcAs5dJh3c"?
$endgroup$
– AShelly
1 hour ago












$begingroup$
A CreateHand() is essentially what I'm trying to go for here but I'm not sure how to implement your idea. Can you please share some pseudocode or code?
$endgroup$
– Asel S
1 hour ago




$begingroup$
A CreateHand() is essentially what I'm trying to go for here but I'm not sure how to implement your idea. Can you please share some pseudocode or code?
$endgroup$
– Asel S
1 hour ago












$begingroup$
You also need to post the code you are testing. The tests are worthless without it.
$endgroup$
– t3chb0t
10 mins ago




$begingroup$
You also need to post the code you are testing. The tests are worthless without it.
$endgroup$
– t3chb0t
10 mins ago












$begingroup$
By the code that I'm testing, do you mean the code for the OnePair() method? If not, could you please clarify?
$endgroup$
– Asel S
6 mins ago




$begingroup$
By the code that I'm testing, do you mean the code for the OnePair() method? If not, could you please clarify?
$endgroup$
– Asel S
6 mins ago










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