E2E testing on Rails 2023

by Yusuke Iwaki

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&&UFTUJOHPO3BJMT !:VTVLF*XBLJ,BJHJPO3BJMT

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&&UFTUJOHPO3BJMT ຊ೔ͷ͓୊

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&OEUP&OEUFTUJOH ɾ3BJMT͔ΒγεςϜςετ͕࢖͑Δ ɾ$BQZCBSB4FMFOJVNͰॻ͘ϒϥ΢βςετ ˠ͓ੈࣙʹ΋։ൃମݧ͕ྑ͍ͱ͸ݴ͑ͳ͍ɻ ͋ʔɺ͜ΕམͪΔςετͳɻ ϦτϥΠɹΆͪͬ

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γεςϜςετղ๤ֶ ͳͥςετ͕ෆ҆ఆʹͳΔͷ͔ɺͲ͏ରॲ͢Ε͹Α͍ͷ͔Λߟ࡯ͨ͠ɻ IUUQTLBJHJPOSBJMTPSHUBMLT:VTVLF*XBLJ

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ੈͷதͷྲྀΕ͸/PEFKTʹ IUUQTTUBSIJTUPSZDPNUFBNDBQZCBSBDBQZCBSBDZQSFTTJPDZQSFTTNJDSPTPGUQMBZXSJHIU%BUF /PEFKTϕʔεͷςετϥϯφʔΛओ࣠ͱͯ͠ 3BJMTͱͲͷΑ͏ʹڠௐ͍͔ͤͯ͘͞ʁΛߟ͑Δɻ

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ຊ೔࿩͢͜ͱɾ࿩͞ͳ͍͜ͱ w࿩͢͜ͱ w3BJMTͷγεςϜςετͷಈ͖ wطଘͷ࢓૊Έ wDZQSFTTPOSBJMT DZQSFTTSBJMT w/PEFKTϕʔεͷςετϥϯφʔͱڠௐͤ͞ΔͨΊʹɺ3BJMT͕Ͱ͖Δ͜ͱ w࿩͞ͳ͍͜ͱ w̋̋ϥΠϒϥϦ࢖͏ͱ͍͍Αʙ wෆ҆ఆͳςετΛͳ͘͢ʹ͸˚˚ͨ͠΄͏͕͍͍Αʙ

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3BJMTͷγεςϜςετ͓͞Β͍

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3BJMTͷγεςϜςετ 3BJMTىಈˠϒϥ΢βىಈˠࣗಈૢ࡞

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34QFD ͜ͷஈ֊Ͱ͸ 3BJMTαʔόʔ΋ ϒϥ΢β΋ىಈ͍ͯ͠ͳ͍

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34QFD ॳΊͯ$BQZCBSB%4-Λ࢖͏৔ॴ 3BJMTαʔόʔىಈ ϒϥ΢βىಈ

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,BJHJPO3BJMTγεςϜςετղ๤ֶɹͷεϥΠυ͔Βൈਮ 3BJMTαʔόʔىಈ

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$BQZCBSBTFMFOJVNESJWFS DBQZCBSBQMBZXSJHIUESJWFS ϒϥ΢βىಈ

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MPDBMIPTUMPHJO $BQZCBSB #SPXTFS υϥΠό $BQZCBSB 4FTTJPO WJTJU WJTJU WJTJU υϥΠόͷ ࣮૷ʹΑΔ (&5MPHJO MPDBMIPTUMPHJO -PHJO

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MPDBMIPTUMPHJO $BQZCBSB #SPXTFS υϥΠό $BQZCBSB 4FTTJPO pMM@JO pMM@JO pOE TFU -PHJO MPDBMIPTUMPHJO -PHJO JOQVU :VTVLF*XBLJ

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MPDBMIPTUMPHJO $BQZCBSB υϥΠό pMM@JO pOE TFU -PHJO JOQVU MPDBMIPTUMPHJO -PHJO :VTVLF*XBLJ

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MPDBMIPTUMPHJO υϥΠό pOE DMJDL -PHJO CVUUPO MPDBMIPTUMPHJO MPDBMIPTUMPHJO -PHJO :VTVLF*XBLJ $BQZCBSB DMJDL@CVUUPO

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MPDBMIPTUTFTTJPOT MPDBMIPTUEBTICPBSE MPDBMIPTUEBTICPBSE -PHJO 1045TFTTJPOT (&5EBTICPBSE $BQZCBSB υϥΠό HPUP WJTJU ϩάΠϯ׬ྃΛ଴ͨͣʹ࣍ʹਐΉ ͓ͬͱɾɾɾ

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$BQZCBSB υϥΠό IBWF@UFYU pOE@YQBUI MPDBMIPTUEBTICPBSE %"4)#0"3%

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34QFD 3FQPSU $POTPMF "MMVSFSFQPSU

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1MBZXSJHIUςετϥϯφʔ w OQYDSFBUFQMBZXSJHIU OQNJOJUQMBZXSJHIU Ͱ؀ڥߏங w QMBZXSJHIUDPO fi HUTͰ8FCαʔόʔ΍ςετϒϥ΢β؀ڥΛهड़ w 1Z5FTUͬΆ͍ fi YUVSFTΛར༻ͨ͠ςετσʔλੜ੒

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QMBZXSJHIUDPO fi HUT w QSPKFDUTͰ؀ڥهड़ w $ISPNJVN 'JSFGPY 8FC,JUʹɹ ΑΔςετ w XFC4FSWFSͰςεταʔόʔهड़ w ෳ਺αʔόʔىಈ΋Մೳ

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ςεταʔόʔىಈ

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ϒϥ΢βىಈ

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ࣗಈૢ࡞ :VTVLF*XBLJ ͳΜͯ஌Βͳ͍Αʁ

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MPDBMIPTUMPHJO -PHJO :VTVLF*XBLJ ਖ਼͍͠৘ใΛೖྗ͍ͯͩ͘͠͞

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3FQPSU -JOF "MMVSFSFQPSU )UNM ;JQ

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1MBZXSJHIUςετϥϯφʔ w OQYDSFBUFQMBZXSJHIU OQNJOJUQMBZXSJHIU Ͱ؀ڥߏங w QMBZXSJHIUDPO fi HUTͰ8FCαʔόʔ΍ςετϒϥ΢β؀ڥΛهड़ w 1Z5FTUͬΆ͍ fi YUVSFTΛར༻ͨ͠ςετσʔλੜ੒

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1Z5FTUͷ'JYUVSFT

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1Z5FTUͷ'JYUVSFT ґଘ͢ΔϑΟΫενϟΛݺͼग़͠ ґଘ͢ΔϑΟΫενϟΛݺͼग़͠ ґଘ͢ΔϑΟΫενϟΛݺͼग़͠

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1Z5FTUͷ'JYUVSFT ϑΟΫενϟͷޙॲཧ΋ॻ͚Δ 34QFDͩͱ #&(*/30--#"$, Ͱશ෦ϩʔϧόοΫ͢Δͷ͕ৗ

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1MBZXSJHIUͷ fi YUVSFT ґଘ͢ΔϑΟΫενϟΛݺͼग़͠

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ͦ͏͸͍ͬͯ΋ ϑΝΫτϦͱϞοΫ͸࢖͍͍ͨʜ ຊ౰ʹ'JSFCBTFϓογϡΛૹΔΘ͚ʹ͸͍͔ͳ͍ 'BDUPSZ#PUͷఆٛ͸࠶ར༻͍ͨ͠

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طଘϥΠϒϥϦ͕ ͲΜͳ޻෉͍ͯ͠Δ͔ݟͯΈΔ

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طଘϥΠϒϥϦ w DZQSFTTSBJMT w DZQSFTTPOSBJMT

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DZQSFTTSBJMT w 1VNBςεταʔόʔ$ZQSFTTηοτͷಠࣗςετ؀ڥΛཱͯΔ w SBLFDZQSFTTYYYͱ͍͏DZQSFTTϥοϓίϚϯυ͕༻ҙ͞Ε͍ͯΔɻ w σϑΥϧτͰ͸3"*-4@&/7UFTUͰαʔόʔىಈ w 1VNBαʔόʔىಈ෦෼͸ɺ$BQZCBSBͷίʔυͷίϐʔ࣮૷ w 5SBOTBDUJPOBM5FTUΛߦ͏ɻ%#ίωΫγϣϯڞ༗ʢMPDL@UISFBEʣ͸ɹɹ ΄ͱΜͲ"DUJWF3FDPSEͷίʔυͷίϐʔ࣮૷

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DZQSFTTSBJMT 1VNB ಠࣗϛυϧ΢ΣΞ SBLFDZQSFTTSVO (&5@@JEFOUJUZ@@ ϧʔτఆٛ ىಈ׬ྃ͢Δ·ͰϙʔϦϯά (&5@@JEFOUJUZ@@ (&5DZQSFTT@SBJMT@SFTFU@TUBUF ϧʔτఆٛ 3"*-4@&/7UFTUͰαʔόʔىಈ $ZQSFTTىಈ DZQSFTTSVO beforeEach(() => { cy.request('/cypress_rails_reset_state') }) GET /cypress_rails_reset_state GET /cypress_rails_reset_state UFTU %# ROLLBACK BEGIN ROLLBACK BEGIN reset_stateϦΫΤετΛड͚ͨ ࣍ͷHTTPϦΫΤετ࣌ʹ ROLLBACKͱBEGIN͢Δ

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DZQSFTTPOSBJMT w ͋ͳͨͷ3BJMTΞϓϦέʔγϣϯΛɺ$ZQSFTT΍1MBZXSJHIUͱର޲ͤ͞ΔͨΊͷ ςεταʔόʔʹ͢Δ͚ͩ w 3BJMTαʔόʔ͸खͰىಈ͢Δɻ w 3BJMTଆʹίϯτϩʔϧ༻ͷΤϯυϙΠϯτΛੜ΍͚ͩ͢ w 'BDUPSZ#PUΛݺͼग़͢ΤϯυϙΠϯτGBDUPSZ@CPU w ೚ҙͷ3BJMTίʔυΛ࣮ߦͰ͖ΔΤϯυϙΠϯτFWBM w %BUBCBTF$MFBOFSΛ࢖ͬͯɺςετσʔλΛ࡟আ͢ΔΤϯυϙΠϯτDMFBO

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DZQSFTTPOSBJMT ಠࣗϛυϧ΢ΣΞ $:13&44CJOSBJMTTFSWFS (&5@@FF@@DPNNBOE ϧʔτఆٛ ɾFactoryBot ݺͼग़͠ ɾ೚ҙͷίϚϯυ࣮ߦ ɾσʔλ clean ςετπʔϧ͸/PEFKTͷ΋ͷΛͦͷ··࢖͏ ඞཁͳλΠϛϯάͰ )551ΞΫηεͯ͠ݺͼग़͠

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ͦ͏͸͍ͬͯ΋ ϑΝΫτϦͱϞοΫ͸࢖͍͍ͨʜ ຊ౰ʹ'JSFCBTFϓογϡΛૹΔΘ͚ʹ͸͍͔ͳ͍ 'BDUPSZ#PUͷఆٛ͸࠶ར༻͍ͨ͠

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ϞοΫελϒ w 34QFDͩͱಛఆͷςετͷ͚ؒͩϝιουͷڍಈΛม͑Δ͜ͱ͸Ͱ͖Δ w BMMPX@BOZ@JOTUBODF@PGʜ 3F fi OFNFOUT ͳͲ w (&5IPHF͞Ε͔ͯΒ(&5GVHB͞ΕΔ·ͰϞοΫ͸Ͳ͏͢Δɾɾɾʁ w ຊ౰ʹͳ͍ͳΒࣗ෼Ͱ࡞Δ͔͠ͳ͍ʜ

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TJNQMF@TUVC ಠࣗϛυϧ΢ΣΞ ςετલ४උ DVSSFOU@VTFSΛϞοΫ ςετલ४උ VTFSΛ̍ਓ࡞੒ ςετޙॲཧ DVSSFOU@VTFSϞοΫղআ 1045@@FF@@FWBM 4JNQMF4UVCGPS@JOTUBODF@NFUIPE "QQMJDBUJPO$POUSPMMFS DVSSFOU@VTFS \6TFS fi STU^BQQMZ 1045@@FF@@FWBM 4JNQMF4UVCGPS@JOTUBODF@NFUIPE "QQMJDBUJPO$POUSPMMFS DVSSFOU@VTFS \6TFS fi STU^SFTFU

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1MBZXSJHIUͷ fi YUVSFTͰϞοΫΛ࣮ݱ ಠࣗϛυϧ΢ΣΞ ςετલ४උ VTFSΛ̍ਓ࡞੒ ςετલ४උ DVSSFOU@VTFSΛϞοΫ ςετޙॲཧ DVSSFOU@VTFSϞοΫղআ +PIO

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1MBZXSJHIUͷ fi YUVSFTͰϞοΫΛ࣮ݱ ಠࣗϛυϧ΢ΣΞ ςετલ४උ VTFSΛ̍ਓ࡞੒ ςετલ४උ DVSSFOU@VTFSΛϞοΫ ςετޙॲཧ DVSSFOU@VTFSϞοΫղআ +PIO $VSSFOUVTFS

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1MBZXSJHIUͷ fi YUVSFTͰϞοΫΛ࣮ݱ ಠࣗϛυϧ΢ΣΞ ςετલ४උ VTFSΛ̍ਓ࡞੒ ςετલ४උ DVSSFOU@VTFSΛϞοΫ ςετޙॲཧ DVSSFOU@VTFSϞοΫղআ +PIO $VSSFOUVTFS +PIO

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1MBZXSJHIUͷ fi YUVSFTͰϞοΫΛ࣮ݱ ಠࣗϛυϧ΢ΣΞ ςετલ४උ VTFSΛ̍ਓ࡞੒ ςετલ४උ DVSSFOU@VTFSΛϞοΫ ςετޙॲཧ DVSSFOU@VTFSϞοΫղআ +PIO

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3BJMTΒ͘͠ɺϞοΫ΍ϑΝΫτϦΛ׆༻ͭͭ͠ /PEFKTϕʔεͷϥϯφʔͰςετͰ͖ͨʂʂ ʘ ?P? ʗ

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ʂ ಠࣗϛυϧ΢ΣΞ +PIOΛ࡞੒ͯ͠ $VSSFOUVTFSʹ *%:VTVLF*XBLJ 1BTT ͰϩάΠϯ %BTICPBSETQFD -PHJOTQFD +PIO $VSSFOUVTFS

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ʂ ಠࣗϛυϧ΢ΣΞ +PIOΛ࡞੒ͯ͠ $VSSFOUVTFSʹ *%:VTVLF*XBLJ 1BTT ͰϩάΠϯ %BTICPBSETQFD -PHJOTQFD +PIO $VSSFOUVTFS /PEFKTϕʔεͷςετϥϯφʔ͸ ϊϯϒϩοΩϯά*0ϑϧ׆༻ جຊతʹ͸ฒྻςετʂ

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ʂ ಠࣗϛυϧ΢ΣΞ +PIOΛ࡞੒ͯ͠ $VSSFOUVTFSʹ *%:VTVLF*XBLJ 1BTT ͰϩάΠϯ %BTICPBSETQFD -PHJOTQFD +PIO $VSSFOUVTFS $BQZCBSBͷͱ͖ʹฒྻ࣮ߦͳΜͯ ҙࣝͯ͠ॻ͍ͯͳ͔ͬͨʜPS[

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ςετϫʔΧʔ͝ͱʹର޲αʔόʔΛม͍͑ͨ %BTICPBSETQFD -PHJOTQFD ಠࣗϛυϧ΢ΣΞ %# ಠࣗϛυϧ΢ΣΞ %# +PIO $VSSFOUVTFS :VTVLF*XBLJ

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ςετϫʔΧʔ͝ͱʹର޲αʔόʔΛม͍͑ͨ %BTICPBSETQFD -PHJOTQFD ಠࣗϛυϧ΢ΣΞ %# ಠࣗϛυϧ΢ΣΞ %# +PIO $VSSFOUVTFS :VTVLF*XBLJ

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4IBSEJOHͰແཧ΍ΓฒྻԽʜ %BTICPBSETQFD -PHJOTQFD ಠࣗϛυϧ΢ΣΞ %# ಠࣗϛυϧ΢ΣΞ %# +PIO $VSSFOUVTFS :VTVLF*XBLJ OQYQMBZXSJHIUUFTU TIBSESFQPSUFSCMPC OQYQMBZXSJHIUUFTU TIBSESFQPSUFSCMPC 1035 1035

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·ͣ͸௚ྻςετ͔Β࢝ΊΑ͏

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·ͱΊ&OEUP&OEUFTUJOHPO3BJMT ɾ3BJMTΞϓϦέʔγϣϯΛ/PEFKTϕʔεͷςετϥϯφʔ Ͱ3BJMTͬΆ͍΍Γ͔ͨͰγεςϜςετ͢Δํ๏Λߟ࡯ͨ͠ ɾ3BDLϛυϧ΢ΣΞͰɺίϯτϩʔϧ༻ΤϯυϙΠϯτΛ༻ ҙ͢Δ͚ͩͰɺ1MBZXSJHIUςετϥϯφʔͷ։ൃମݧͷྑ͞ Λڗड͢Δ͜ͱ͸Ͱ͖ͨɻ ɾͨͩ͠ฒྻςετ͸·ͩզʑʹ͸ૣ͔ͬͨʜɻ௚ྻςετ ͔Β࢝ΊͯΈΑ͏ɻ

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એ఻1MBZXSJHIUΛ3VCZ͔Β࢖͑Δ044 ɾͦ͏͸͍ͬͯ΋ɺ$BQZCBSBͰ1MBZXSJHIU࢖͍͍ͨΑͶX w 1MBZXSJHIUΛ3VCZ͔Β࢖͑ΔΑ͏(FN։ൃ͍ͯ͠·͢ɻ ͥͻ࢖ͬͯΈ͍ͯͩ͘͞ˍ࣮ӡ༻Ͱվળ఺͕͋Ε͹ͲΜͲΜཁ๬͍ͩ͘͞ʂ

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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠