JUnit 5の拡張機能を完全にマスターした

2019-09-19T19:00 関ジャバ'19 9月度のセッション資料です。
https://kanjava.connpass.com/event/141792/

Transcript

1. +6OJU
   ͷ֦ுػೳΛ
   ׬શʹϚελʔͨ͌͠ 5
   ؔδϟό
   ݄౓
   !JSPG
   #PU8͸%ਲ͍Ͱ·ͩΫϦΞͰ͖ͯͳ͍ɻ
2. ͓඼ॻ͖ ࠷ۙͷ+6OJU
   &YUFOTJPOͷ۩ମྫ
   &YUFOTJPOͷԼࢧ͑
   &YUFOTJPOͷ࡞Γํ
3. ͝஫ҙ +6OJU
   
   ਤ͸*OUFSOBM΍&YQFSJNFOUBMͳ ͲΛؚΈ·͢ɻ
4. ࠷ۙͷ+6OJU
    ϦϦʔε௚ޙͷػೳෆ଍ظ͸ൈ͚ɺ
   ػೳతʹ͸མͪண͍͖ͯͨɻ
5. όʔδϣϯΛோΊΔ 
   
   
   
   
   
   
    w ฒྻ࣮ߦ
   w ඪ४ग़ྗͷΩϟϓνϟ
   w ಈతςετ w !5FNQ%JS
   w 5FTU8BUDIFS
   w ج൫։ൃऀ޲͚"1*ॆ࣮ w !5JNFPVU
   w ֦ுϙΠϯτͭ
   w NPEVMFରԠ ϚΠΫϩόʔδϣϯ͸όάϑΟοΫεɻ
6. Ϟδϡʔϧؔ࿈ w WJOUBHFͱMBVODIFSपΓ͸লུɻίʔυॻ͘ͱ͖ʹग़ͯ͘Δ΋ͷ͚ͩɻ
   w ·Ͱ͸6TFS
   (VJEFʹ͜ͷਤ͋ͬͨΜ͚ͩͲɺ͔Βফ͑ͨɻͳ͔ͥ͸஌Βͳ͍ɻ
7. +6OJU
   ͸࣮༻ʹ଱͑Δ͔ ·ͬͨ͘໰୊ͳ͍ɻ
8. &YUFOTJPOͷ۩ମྫ ͍͔ͭ͘঺հ͠·͢ɻ
   Կ͕Ͱ͖Δ͔งғؾ͕Θ͔Ε͹͍͍ͳͱɻ
9. &YUFOTJPO +6OJU
   +VQJUFSͷ֦ு
   3VOOFS3VMFͷޙܧ
   +6OJU
   1MBUGPSNͷ֦ுͰ͸ͳ͍
10. ຊՈ੡ w &YUFOTJPOͷొ࿥ෆཁɻউखʹಈ͘ɻʢޙͰग़ͯ͘Δ%&'"6-5@&95&/4*0/4ʣ
11. +6OJUඪ४ͷ֦ு Ұ෦ 5JNFPVU&YUFOTJPO
    
    5FNQ%JSFDUPSZ
    
    FYQU
    %JTBCMFE$POEJUJPO
    1BSBNFUFSJ[FE5FTU&YUFOTJPO
    5FTU*OGP1BSBNFUFS3FTPMWFS
12. 5JNFPVU&YUFOTJPO @Timeout(value = 3, unit = TimeUnit.MILLISECONDS) public class SampleTimeout { @Test void test() throws Exception { TimeUnit.MILLISECONDS.sleep(5); } } w λΠϜΞ΢τʢ໓ଟʹ࢖Θͳ͍ʣ
13. 5FNQ%JSFDUPSZ public class SampleTempDir { @TempDir Path tempDirPath; @Test void test() { System.out.println(tempDirPath); } } w !5FNQ%JSͳϑΟʔϧυ΍ύϥϝʔλ͕͋ͬͨΒ04ͷUFNQEJSʹσΟϨΫτϦΛ࡞ͬͯ 1BUIΛηοτͯ͘͠ΕΔɻ
    w KVOJUQJPOFFSʹ͋ͬͨͷ͕ຊՈʹऔΓࠐ·Εͨɻʢ·ͩ&91&3*.&/5"-͚ͩͲʣ
14. αʔυύʔςΟ੡ w ཁ&YUFOTJPOͷొ࿥ɻ
15. 4QSJOH&YUFOTJPO // Spring @ExtendWith(SpringExtension.class) public class SampleSpringTest { // Spring Boot @SpringBootTest public class SampleSpringBootTest { w 4QSJOH࢖͏ͳΒɻ
    w 4QSJOH#PPU5FTU͸ϝλΞϊςʔγϣϯͷྫʹ΋ͳΔɻ
16. 4QSJOH#PPU5FTU w 4QSJOHϢʔβʔͳΒ׳ΕͯΔʢʁʣϝλΞϊςʔγϣϯɻ
    w +6OJUͩͱ4QSJOH#PPU5FTUͱ3VO8JUIΛซه͢Δඞཁ͕͋ͬͨɻ
17. w .PDLJUP+6OJU3VOOFSͷ୅ସɻ
    w NPDLJUPDPSFʹೖ͍ͬͯͳ͍
    NPDLJUPNPDLJUPKVOJUKVQJUFS
    ͷͰ஫ҙɻ .PDLJUP&YUFOTJPO
18. +6OJU+VQJUFS#%%4PGU"TTFSUJPOT w "TTFSU+ͷ֦ுɻ
    w "GUFS&BDI$BMMCBDLͰ࣮ݱ͍ͯ͠Δɻ
19. &YUFOTJPOͷԼࢧ͑ ͬ͘͟Γɺ͔ΜͨΜʹɻ
20. &YUFOTJPOͷಈ͔͠ํ
21. &YUFOTJPOͷొ࿥ !&YUFOE8JUI
    !3FHJTUFS&YUFOTJPO
    4FSWJDF-PBEFS
22. &YUFOTJPOͷొ࿥
23. ొ࿥ࡁΈ&YUFOTJPO w ͜Ε͕͋Δ͔Βඪ४ͷ֦ு͕&YUFOE8JUIͱ͔ͳ͠Ͱಈ͘
24. &YUFOTJPO͸$POUFYUʹཷΊΔ
25. &OHJOF&YFDVUJPO$POUFYU w &OHJOF&YFDVUJPO$POUFYU͸ۭͬΆɻ
    w +VQJUFSͰͳ͍+6OJU
    1MBUGPSN͸&YUFOTJPOͳΜͯ஌ͬͨͬͪ͜Όͳ͍ɻ
26. &YUFOTJPO$POUFYU &YUFOTJPOͷ࣮૷ΫϥεͰ࢖͏ ʢ͜ͱ͕ଟ͍ʣ
    ౉ͬͯ͘Δ͔͸֦ுґଘ ʢ&YUFOTJPOΠϯλϑΣʔε͸ ϝιου࣋ͨͳ͍ʣ
27. &YUFOTJPO$POUFYUͷड͚औΓ w ΠϯλϑΣʔεͷҾ਺Ͱ౉͞ΕΔɻ
    w &YUFOTJPO$POUFYU͔ΒςετΠϯελϯεͳͲΛऔಘͯ͠৭ʑ͢Δɻ
28. ֦ுϙΠϯτ ֦ுϙΠϯτ͝ͱʹΠϯλ ϑΣʔε͕༻ҙ͞Ε͍ͯΔɻ
    ݺͼग़͠͸+6OJU೚ͤɻ
    ৽͍֦͠ுϙΠϯτΛ଍͢ͷ ͸೉͍͠ɻ
29. &YUFOTJPO
    )JFSBSDIZ w ߇͑Ίʹݴͬͯ໾ʹཱͨͳ͍ਤɻ
30. ෼͚ΔͳΒ͜͏ʁ
31. $BMMCBDL͕ݺ͹ΕΔλΠϛϯά w 6TFS(VJEF
    ࢀর
32. ྫΛڍ͛ͯΈΔ
33. %JTBCMFE$POEJUJPO
34. 4QSJOH&YUFOTJPO 5FTU&YFDVUJPO-JTUFOFSʹͭͳ͙࢓૊ Έ
    
    1BSBNFUFSղܾɻ
    ػೳ௥Ճ͸5FTU&YFDVUJPO-JTUFOFSͰɻ
    5FTU$POUFYUҾͬுΓग़͠͸৻ॏʹɻ
35. ࣮ࡍΑ͘࢖͏΋ͷ
36. &YUFOTJPOͷ࡞Γํ ؆୯ʹɻ
37. ࡞Γํ ֦ுΠϯλϑΣʔ εΛૉ௚ʹ࢖͏ɻ
    ෺଍Γͳ͍ਓ͸ FOHJOF࣮૷͢Ε͹ ͍͍ʢී௨͠ͳ͍
38. ΍Δ͜ͱ ࣮૷ΫϥεΛ࡞੒
    &YUFOE8JUIͳͲͰొ࿥ w ؆୯Ͱ͠ΐʁ
39. ࡞ͬͯΈΑ͏ ͳʹ͕͋ͬͯ΋ςετ͸௨ͬ ͯཉ͍͠ʂ
40. ௨ͬͯཉ͍͠ςετ class MahouTest { @Test void ઈରࣦഊ͢Δ൵͍͠ςετ() { throw new RuntimeException(); } }
41. ֦ுର৅ͷબ୒
42. ֦ுର৅ͷબ୒
43. ྫ֎ϋϯυϥΛ࣮૷ class MahouExtension implements TestExecutionExceptionHandler { @Override public void handleTestExecutionException( ExtensionContext context, Throwable throwable) { } } w Կ΋͠ͳ͖ΌѲΓͭͿ͢͜ͱʹͳΔɻ
44. &YUFOE8JUIͰొ࿥ @ExtendWith(MahouExtension.class) class MahouTest { @Test void ઈରࣦഊ͢Δ൵͍͠ςετ() { throw new RuntimeException(); } }
45. ΍ͬͨʔ
46. ׬શʹϚελʔͨ͠ w ͪͳΈʹ00.&͸#MBDL-JTUFE
    FYDFQUJPOͱͯ͠ಛผѻ͍͞ΕͯΔ͔Βμϝɻ
47. ୤ઢ
    #MBDLMJTUFE&YDFQUJPOT w 0VU0G.FNPSZ&SSPS͚ͩ͸ଈ࣌ऴྃ͢Δɻʢ+6OJU
    1MBUGPSNʣ
48. ࡞ͬͯΈΑ͏ ॓୊ ςετʹಠࣗΞϊςʔγϣϯ Λ࢖ͬͨ΋ͷɻ
    ʢώϯτ͸࣍ͷϖʔδʣ
49. w TVQQPSUύοέʔδΛ࢖͏ͷ͕ਪ঑ʢ৑௕ʹͳͬͪΌ͏͠ʣ
    w 
    4VQQPSUFE
    6UJMJUJFT
    JO
    &YUFOTJPOT
50. ֦ுͷՖܗ͸
    1BSBNFUFS3FTPMWFS
    ͩͱࢥ͏ w ͜͜ʹه͢ʹ͸༨ന͕ڱ͗͢ΔɻʢׂѪʣ
51. ࡞Δͱ͖ͷϙΠϯτ ঢ়ଶ͸4UPSFͰѻ͏
    ϝλΞϊςʔγϣϯΛ࡞Δ
    ҆શ૷ஔʹ߄ͯͳ͍
52. w 
    ,FFQJOH
    4UBUF
    JO
    &YUFOTJPOT &YUFOTJPO4UPSF &YUFOTJPOʹঢ়ଶΛ࣋ͭͱ൵͍͜͠ ͱ͕ى͜Δɻ໘౗Ͱ΋4UPSFͰɻ
    ࢖͍ํ͸ೋஈ֊ͷ.BQɻ
    .BQ/BNFTQBDF
    .BQ,
    7 ͷΠϝʔδɻ͋͘·ͰΠϝʔδɻ
53. 4UPSFͱ/BNFTQBDFͱ1BSFOUͱ w &YUFOTJPO7BMVF4UPSFΠϯελϯεͷϥΠϑαΠΫϧ͸&YUFOTJPO$POUFYUͱಉ͡
    w 4UPSFΠϯελϯε͸HFU4UPSFͷͨͼʹ࡞ΒΕΔʢ͚ͲͲ͏Ͱ΋͍͍ʣ
    w /BNFTQBDF࢖͍ʹ͍͘
54. ϝλΞϊςʔγϣϯ Ξϊςʔγϣϯʹ෇༩͢ΔΞϊςʔγϣϯ
    Ξϊςʔγϣϯͷهड़͸৑௕ͳͷͰੵۃతʹ࢖ ͏
    &YUFOTJPO࡞ͬͨΒ&YUFOE8JUIͰΞϊςʔτ͠ ͨΞϊςʔγϣϯΛͱΓ͋͑ͣ࡞Δͱ͍͍ɻ
    +BWBඪ४ͷ࢓૊ΈͰ͸ͳ͍ w 
    .FUB"OOPUBUJPOT
    BOE
    $PNQPTFE
    "OOPUBUJPOT
55. ҆શ૷ஔ͍ͭͯ·͢ w 5FTU*OTUBODF'BDUPSZͰOVMMΛฦͨ͠ w *OWPDBUJPO*OUFSDFQUPSͰϝιουݺ͹ͳ͔ͬͨ w มͳ͜ͱ͕Ͱ͖ͳ͘ͳͬͯΔɻͨͱ͑͹ςετϝιουΛݺ͹ͳ͘͢Δͱ͔ɻ
56. ͜ΕͰ+6OJU
    Λ
    ׬શʹϚελʔͨ͠ ʜʜͱݴ͍͍ͬͯͱࢥ͏ɻ
    ςετࣗମ͸10+0ͩ͠ɺΞαʔγϣϯํ๏͸બ୒ࣜɻ
    FOHJOF΍MBVODIFS͸+6OJU
     +VQJUFS Ͱ͸ͳ͘ɺ
    +6OJU
    1MBUGPSNͷ࿩ͳͷͰɻ