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Test-driven
Development
with PHPUnit
Oliver Klee, 2018-06
@oliklee [email protected]
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This is Oliver Klee (me!)
Workshop teacher
•unit testing
•extension development
•software quality
•saying „no“, consent culture
TYPO3 extension
developer
(wanna-be)
singer
@oliklee
oliverklee
oliverklee.de
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unterstand TDD become test-infected have fun
Workshop goals
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Workshop
Rules
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Stand up
for your tests
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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Unit
Tests?
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Manual testing is cumbersome
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Automated
testing
is fast
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Unit tests for the
TYPO3 Core
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> 4400 tests
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< 14 seconds
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Verify that your code
does what you expect
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Make sure that
your changes won‘t
break anything
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Keep others
from breaking your code
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Don’t break anything
even in complex
projects
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Create a safety net
for refactoring
or for
TYPO3 updates
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Improve
the structure
of your code
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Green feels good!
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https://github.com/oliverklee/tdd-reader
/Exercises/tdd-exercises-en.md
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Let’s get
some terms
straight
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The two programming modes
clean
hacky
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Testsuite
Testcase
Test
Assertion
Test
Test
Testcase
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The life cycle of a test
new FooTest();
setUp();
/** @test */
lifeIsGood();
tearDown();
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4 test phases
set up
setUp()
code in the test method
exercise method call
verify assert…()
tear down tearDown()
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Code test-first
write
test
write
code
refactor
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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https://github.com/oliverklee/tdd-reader
/Exercises/tdd-exercises-en.md
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Test levels
http://filipdefar.com/2015/06/tested-be-thy-name.html
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Unit tests are
small and fast
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Integration tests
test how components
work together
in TYPO3:
„functional tests“
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Systemtests test
the big picture
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Test types
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Blackbox tests
test
the public API
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Whitebox tests
inner workings
test the
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Functional
tests
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Acceptance tests
Selenium
Codeception
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Anti-
zombie
tests-
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Regression tests
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Smoke tests
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Smoke tests
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Story tests for
Behavior-driven development
(BDD)
Behat
Codeception
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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Naming
Tests
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Use meaningful test names
classCanBeInstantiated
setTitleSetsTitle
setSizeWithZeroThrowsException
hasTitleForEmptyTitleReturnsFalse
Name the
behavior.
Name the
preconditions.
Name the
method.
Don’t use
“works” or
“works correctly”.
measureFrubbleWorksCorrectly
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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Workshop roadmap
1. Terms & concepts 2. Testing patterns
3. Naming things 4. Code katas
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