Something About jUnit

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Somkiat Puisungnoen

JUnit slide will present in THJUG

Technology

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http://less.works/less/technical-excellence/unit-testing.html

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Why not write Unit test ?
4

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Why not write Unit test ?
5
Testing for QA Time = Cost
Integration testing find more bugs
Manual testing find more bugs
Write more code

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Waste time ?
6

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Waste time ?
7

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Why Unit test ?
8

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Anatomy JUnit 4
Test Name
Test Case NameAnnotation
9

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Test Naming
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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
“What ’s in a name ?”
That which we call a rose
by any other name would smell
Romeo and Juliet
as sweet
11

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Don’t say “test”, say “should”
Guide to Test Writing
12

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Don’t use the word “test”
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SPRINT3R
Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Use the word “should”
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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Don’t test your class, test behaviour
Guide to Test Writing
15

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Test class names are important too
Structure your test well
Guide to Test Writing
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Tests are deliverable too

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Test Structure
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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
The ratio of time spent (code)
versus writing is
over 10 to 1
Robert C. Martin, Clean Code
18

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Good Unit Test
Arrange
Act
Assert
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Setup Pattern
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Setup Pattern
Inline
Setup
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Setup Pattern
Delegate
Setup
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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Setup Pattern
Implicit
Setup
23

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Implicit Teardown
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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Ignore Testcase
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Handle Exception
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Traditional approach
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Expected Annotation
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ExpectedException Rule
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Data-Driven with JUnit
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@Parameterized

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Set of test data
Using parameterized
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Expected result
Define test that uses the test data
Verify result against expected result

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Data-Driven Development
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@Parameterized
with Calculate Grade
Demo
33
Input Expected Result
80 A
70 B
60 C
50 D
40 F

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Step 1 :: Test Data
34
Input Expected Result
80 A
70 B
60 C
50 D
40 F

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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Step 2 :: Add Runner
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Step 3 :: Matching fields
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Step 4 :: Define test case
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Step 5 :: Add @parameters
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Step 6 :: Test Result
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Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance
Why not write Unit test ?
40

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Something About jUnit

1. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance 1

2. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance 2 http://less.works/less/technical-excellence/unit-testing.html

3. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance 3

4. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Why not write Unit test ? 4

5. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Why not write Unit test ? 5 Testing for QA Time = Cost Integration testing find more bugs Manual testing find more bugs Write more code

6. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Waste time ? 6

7. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Waste time ? 7

8. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Why Unit test ? 8

9. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Anatomy JUnit 4 Test Name Test Case NameAnnotation 9

10. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Test Naming 10

11. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance “What ’s in a name ?” That which we call a rose by any other name would smell Romeo and Juliet as sweet 11

12. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Don’t say “test”, say “should” Guide to Test Writing 12

13. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Don’t use the word “test” 13

14. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Use the word “should” 14

15. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Don’t test your class, test behaviour Guide to Test Writing 15

16. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Test class names are important too Structure your test well Guide to Test Writing 16 Tests are deliverable too

17. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Test Structure 17

18. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance The ratio of time spent (code) versus writing is over 10 to 1 Robert C. Martin, Clean Code 18

19. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Good Unit Test Arrange Act Assert 19

20. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Setup Pattern 20

21. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Setup Pattern Inline Setup 21

22. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Setup Pattern Delegate Setup 22

23. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Setup Pattern Implicit Setup 23

24. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Implicit Teardown 24

25. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Ignore Testcase 25

26. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Handle Exception 26

27. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Traditional approach 27

28. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Expected Annotation 28

29. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance ExpectedException Rule 29

30. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Data-Driven with JUnit 30 @Parameterized

31. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Set of test data Using parameterized 31 Expected result Define test that uses the test data Verify result against expected result

32. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Data-Driven Development 32

33. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance @Parameterized with Calculate Grade Demo 33 Input Expected Result 80 A 70 B 60 C 50 D 40 F

34. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Step 1 :: Test Data 34 Input Expected Result 80 A 70 B 60 C 50 D 40 F

35. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Step 2 :: Add Runner 35

36. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Step 3 :: Matching fields 36

37. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Step 4 :: Define test case 37

38. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Step 5 :: Add @parameters 38

39. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Step 6 :: Test Result 39

40. SPRINT3R Siam Chamnankit Co., Ltd., Odd-e (Thailand) Co., Ltd. and Alliance Why not write Unit test ? 40

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