Backside of coverage measurement of Go

Slide 1

Slide 1 text

Backside of coverage measurement In Go Gopher Conference Tokyo 2019 Spring Second party May 20, 2019 @ po3rin

Slide 2

Slide 2 text

@po3rin Software Enginner @ Shiroyagi Corporation QBHF Golang / Python / Rust / Docker / AWS / Elasticsearch

Slide 3

Slide 3 text

QBHF (P$POGFSFODF5PLZP4QSJOHͰొஃ͠·ͨ͠ʂʂ IUUQTTQFBLFSEFDLDPNQPSJOEJWFJOUPCVJMELJUMMCXJUIHP

Slide 4

Slide 4 text

QBHF Introduction \

Slide 5

Slide 5 text

QBHF (P͸ඪ४ͰςετΧόϨοδΛऔΕΔ Coverage of Go Ὂ

Slide 6

Slide 6 text

QBHF What happened Ὂ ۀ຿Ͱ$PWFSBHFͷؔ਺ͰΤϥʔ͕ɻɻͦ ͜Ͱؾ͍ͮͨ(PͷΧόϨοδͷ୲อ͢Δ΋ͷͱ͸Կ ͳͷ͔ΛΧόϨοδܭଌͷ࣮૷͔Βௐ΂ͯΈ·ͨ͠

Slide 7

Slide 7 text

QBHF ɾ(PͷΧόϨοδ͕ͲͷΑ͏ʹߦΘΕ͍ͯΔ ͍ͷ͔ΛཧղͰ͖Δ ɾ(PͷΧόϨοδͷܭଌํ๏͔Β։ൃ࣌ʹ஫ ҙ͢Δ΂͖͜ͱΛֶ΂Δ Ὂ the benefits of this talk

Slide 8

Slide 8 text

QBHF Reading Go source code of “cover” \

Slide 9

Slide 9 text

QBHF Reading Go source code of “cover” (1) Ὂ HJUIVCDPNHPMBOHHP TSDDNEDPWFS DPWFSHP

Slide 10

Slide 10 text

QBHF Reading Go source code of “cover” (2) Ὂ QBSTFS1BSTF'JMFͰ(PϑΝΠϧΛ੩తղੳ͍ͯ͠Δɻ FSS͸লུ

Slide 11

Slide 11 text

QBHF Reading Go source code of “cover” (3) Ὂ QBSTFS1BSTF'JMFͰಘͨ BTU'JMFΛ͞Βʹಠࣗͷ DPWFS'JMFߏ଄ମʹ֨ೲ͍ͯ͠ ΔɻͦΕΛBTU8BMLʹ౉ͯ͠ ͍Δɻͭ·ΓDPWFS'JMF͸ BTU7JTJUJOUFSGBDFΛ࣮૷ͯ͠ ͍Δͷ͕Θ͔Δ

Slide 12

Slide 12 text

QBHF Reading Go source code of “cover” (3) Ὂ BTU#MPDLʹͨͲΓண͘·Ͱ8BMLΛճ͠ଓ͚ɺϒϩοΫΛ ݟ͚ͭͨΒBEE$PVOUFSTΛಡΜͰ͍Δ

Slide 13

Slide 13 text

QBHF Reading Go source code of “cover” (3) Ὂ BEE$PVOUFST͕ίʔυʹΧ΢ϯλʔΛࠩ͠ࠐΜͰɺς ετதʹ͜͜Λ௨͔ͬͨΛه࿥͍ͯ͠Δɻ #PEZলུ

Slide 14

Slide 14 text

QBHF Show annotated source code Ὂ DPWFSBHFܭଌதʹΧ΢ϯ λʔ࢓ࠐΜͩίʔυ͕Ͳ͏ ͳ͍ͬͯΔͷ͔ΛݟΔͨΊ ͚ͩͷ୭ಘϚχΞ޲͚πʔ ϧɻ

Slide 15

Slide 15 text

QBHF Show annotated source code Ὂ

Slide 16

Slide 16 text

QBHF ΧόϨοδܭଌͷछྨ Ὂ ໋ྩ໢ཏ཰ɿTUBUFNFOUDPWFSBHFʣ ෼ذ໢ཏ཰ɿCSBODIDPWFSBHFʣ ৚݅໢ཏ཰ɿDPOEJUJPODPWFSBHFʣ C0 C1 C2

Slide 17

Slide 17 text

QBHF ΧόϨοδܭଌͷछྨ Ὂ BCUSVF ͷ̍έʔεΛ࣮ߦ͢Ε͹ BCUSVF BCGBMTF ͷέʔεΛ࣮ߦ͢Ε͹ BͱCͷUSVFPSGBMTFͷ૊Έ߹Θͤ έʔεΛ࣮ߦ͢Ε͹ C0 C1 C2

Slide 18

Slide 18 text

QBHF ΧόϨοδܭଌͷछྨ Ὂ BCUSVF ͷ̍έʔεΛ࣮ߦ͢Ε͹ BCUSVF BCGBMTF ͷέʔεΛ࣮ߦ͢Ε͹ BͱCͷUSVFPSGBMTFͷ૊Έ߹Θͤ έʔεΛ࣮ߦ͢Ε͹ C0 C1 C2

Slide 19

Slide 19 text

QBHF ͭ·Γ(PͷΧόϨοδܭଌ͸ C0 !!!

Slide 20

Slide 20 text

QBHF ΧόϨοδͰ΋શύλʔϯΛ໢ཏͰ͖͍ͯΔ༁Ͱ͸ͳ͍ɻ ΧόϨοδ͚ͩʹཔΓ੾ΒͣʹɺͪΌΜͱࣗ෼Ͱ΋ύλʔϯΛ໢ ཏͰ͖͍ͯΔ͔஫ҙ࣮ͯ͠૷͍ͯ͘͠ඞཁ͕͋Δɻ

Slide 21

Slide 21 text

QBHF Additional Talk \

Slide 22

Slide 22 text

QBHF (Pͷ੩తղੳΛղઆͨ͠ബ͍ ຊʂ#PPUIͰൢച͞Εͯ·͢ɻ ੩తղੳʹڵຯΛ࣋ͬͨΒ͜Ε ΛಡΊ͹ྑ͍ɻ

Slide 23

Slide 23 text

QBHF (P$POGFSFODF5PLZP4QSJOHͰ΋ొஃ͠·͢ɻ Ὂ

Slide 24

Slide 24 text

Backside of coverage measurement In Go Gopher Conference Tokyo 2019 Spring Second party May 20, 2019 @ po3rin