TDD and the Terminator: An Introduction to Test-Driven Development
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![public
bool
InvestigateFurther(ISubject
subject)
{
switch
(subject.SubjectName.ToLower())
{
case
"woman":
case
"girl":
case
"man":
case
"boy":
return
true;
default:
return
false;
}
}
[TestCase("woman")]
[TestCase("girl")]
[TestCase("man")]
[TestCase("boy")]
public
void
TerminatorShould_Determine_ToInvestigate
Further
(string
subjectName)
{
var
subject
=
new
Subject
{SubjectName
=
subject
Name};
var
result
=
_sut.InvestigateFurther(subject);
result.Should().BeTrue();
}
[Test]](https://image.slidesharecdn.com/tddandtheterminator-210902221221/75/tdd-and-the-terminator-an-introduction-to-testdriven-development-19-2048.jpg?cb=1668646070)
![public
bool
InvestigateFurther(ISubject
subject)
{
switch
(subject.SubjectName.ToLower())
{
case
"woman":
case
"girl":
case
"man":
case
"boy":
return
true;
default:
return
false;
}
}
[TestCase("woman")]
public
void
TerminatorShould_DetermineNot_ToInvestigateFurther()
{
var
subject
=
new
Subject
{SubjectName
=
"T1000"};
var
result
=
_sut.InvestigateFurther(subject);
result.Should().BeFalse();
}](https://image.slidesharecdn.com/tddandtheterminator-210902221221/75/tdd-and-the-terminator-an-introduction-to-testdriven-development-20-2048.jpg?cb=1668646070)
![@LaylaCodesIt
[Test]
public void
TerminatorShould_Determine_ToInvestigateFurther
(ISubject subject)
{
var subject = new Subject{SubjectName = "woman"};
var result = _sut.InfestigateFurther(subject);
result.Should().BeTrue();
}](https://image.slidesharecdn.com/tddandtheterminator-210902221221/75/tdd-and-the-terminator-an-introduction-to-testdriven-development-25-2048.jpg?cb=1668646070)
![@LaylaCodesIt
[Test]
public void
TerminatorShould_Determine_ToInvestigateFurther
(ISubject subject)
{
var subject = new Subject{SubjectName = "woman"};
var result = _sut.InfestigateFurther(subject);
result.Should().BeTrue();
}
public bool _sut.InvestigateFurther(ISubject subject)
{
return true;
}](https://image.slidesharecdn.com/tddandtheterminator-210902221221/75/tdd-and-the-terminator-an-introduction-to-testdriven-development-26-2048.jpg?cb=1668646070)
![@LaylaCodesIt
[Test]
public void
TerminatorShould_Determine_ToInvestigateFurther
(ISubject subject)
{
var subject = new Subject{SubjectName = "woman"};
var result = _sut.InfestigateFurther(subject);
result.Should().BeTrue();
}
public bool _sut.InvestigateFurther(ISubject subject)
{
return true;
}
Write the least amount
of code to get your test
to pass.
Return true!](https://image.slidesharecdn.com/tddandtheterminator-210902221221/75/tdd-and-the-terminator-an-introduction-to-testdriven-development-27-2048.jpg?cb=1668646070)
TDD and the Terminator: An Introduction to Test-Driven Development
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SpringOne 2021 Session Title: TDD and the Terminator: An Introduction to Test-Driven Development Speaker: Layla Porter, Developer Advocate, .NET communities at VMware
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TDD and the Terminator: An Introduction to Test-Driven Development
- 3. @LaylaCodesIt MICROSOFTMVP GITHUBSTAR MK.NETORGANISER C#LOVER DEVELOPERADVOCATE@VMWARE LAYLAPORTER
- 5. @LaylaCodesIt TDDSUCCESSES •Acceptance Criteria •Focus •Interfaces •Asynchronous development •Cleaner code •Safe refactoring •Fewer bugs •Increasing returns •Living documentation
- 10. @LaylaCodesIt Terminator Requirements Scan subjects and determine if they require further investigation Investigate subjects of interest and determine if they are the target - TERMINATE!
- 11. @LaylaCodesIt Scan subjects and determine if they require further investigation
- 13. @LaylaCodesIt When you write tests after coding you may be writing them to fit your code and not your requirements
- 14. @LaylaCodesIt RED/GREENREFACTORPATTERN • Write a failing test • Write enough code to get the test to pass • Refactor!
- 22. @LaylaCodesIt TDDFAILURES •Underestimating the learning curve •Confusing TDD with unit testing •Thinking TDD is enough testing •Not starting with failing tests •Not refactoring enough •Not actually doing TDD!
- 23. @LaylaCodesIt IMPLEMENTATIONWITHINYOURORGANIZATION •Can be controversial and is a significant culture change •Initial drop in productivity can be disconcerting •Productivity will go up and reworks reduced •Increased understanding of requirements and their acceptance criteria
- 25. @LaylaCodesIt [Test] public void TerminatorShould_Determine_ToInvestigateFurther (ISubject subject) { var subject = new Subject{SubjectName = "woman"}; var result = _sut.InfestigateFurther(subject); result.Should().BeTrue(); }
- 26. @LaylaCodesIt [Test] public void TerminatorShould_Determine_ToInvestigateFurther (ISubject subject) { var subject = new Subject{SubjectName = "woman"}; var result = _sut.InfestigateFurther(subject); result.Should().BeTrue(); } public bool _sut.InvestigateFurther(ISubject subject) { return true; }
- 27. @LaylaCodesIt [Test] public void TerminatorShould_Determine_ToInvestigateFurther (ISubject subject) { var subject = new Subject{SubjectName = "woman"}; var result = _sut.InfestigateFurther(subject); result.Should().BeTrue(); } public bool _sut.InvestigateFurther(ISubject subject) { return true; } Write the least amount of code to get your test to pass. Return true!