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Ϧʔμϒϧςετίʔυ
גࣜձࣾιχοΫΨʔσϯɿҏ౻३Ұ
2022-7-27 VeriServe Test Automation Talk No.3
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https://twitter.com/jnchito/status/1552196880524013569
͍͖ͳΓ༨ஊ
ࠓ΄Μͱ͏ʹ͋ͬͨ
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͍͖ͳΓ༨ஊ
φΠελΠϛϯάʂ!
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5
Hello, world! "
• ҏ౻ ३Ұ
• גࣜձࣾιχοΫΨʔσϯͷRailsϓϩάϥϚ
• ϑΟϤϧυϒʔτΩϟϯϓͷϝϯλʔ
• ฌݿݝࢢࡏॅʢϦϞʔτϫʔΫྺ10ʣ
• ςετίʔυྺ 15Ҏ্ʢJUnit → NUnit → RSpecʣ
!KODIJUP
CMPHKOJUPDPN
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6
Qiita
• ϢʔβʔϥϯΩϯά1Ґʢ20227݄ݱࡏʣ
• QiitaදজϓϩάϥϜ །ҰͷDIAMONDडऀ
#
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7
ஶॻ
ʮϓϩΛࢦ͢ਓͷͨΊͷRubyೖʯ
‣ ௨শɾνΣϦʔຊ$
‣ ग़൛ࣾɿٕज़ධࣾ
‣ 201711݄ ୈ̍൛ൃച
‣ 202112݄ վగ̎൛ൃചʢRuby 3.0ʹରԠʣ
3VCZͱ5%%͕ಉ࣌ʹֶ·͢ʂ
ͦͯ͠ʜʜ
㊗ॏ൛ग़དྷʂʢࠓ࿈བྷ͕དྷ·ͨ͠&ʣ
͡Ύ͏Μ͠Ύ͍ͬͨ
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8
༁ॻ
ʮEveryday Rails - RSpecʹΑΔRailsςετೖʯ
‣ Aaron Sumner ஶ
‣ ग़൛ࣾɿLeanpub
‣ ిࢠॻ੶ͱͯ͠ൃചத
‣ 20142݄ 1stϦϦʔε
‣ 20221݄ Rails 7.0ʹରԠ
34QFDͰ3BJMTΞϓϦΛςετ
͍ͨ͠ਓͪ͜ΒΛͲ͏ͧʂ
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ຊ͓͢͠Δ͜ͱ
• ςετίʔυʹ͓͍ͯɺաͳDRYಡΈ͢͞ͷఢ
• ݡͯ͘ϩδΧϧͳςετίʔυΑΓɺ୭ͰಡΊΔ۪ͳςετίʔυΛʂ
• ϝϞϦΛΘͳ͍ςετίʔυ΄ͲϦʔμϒϧ
• ࣮ߦՄೳͳAPIυΩϡϝϯτͩͱࢥͬͯςετίʔυΛॻ͜͏
• ϓϩάϥϚ͕ࣗͰॻ͘Ϣχοτςετͷ͕ϝΠϯͰ͢
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ඞཁͳࣄલࣝ
• αϯϓϧίʔυRSpecʢRubyʣͰॻ͖·͢
• ͕ɺςετίʔυΛॻ͍ͨܦݧ͕͋Ε͍͍ͩͨཧղͰ͖Δͣ
• ͦ͏ɺϦʔμϒϧͳςετίʔυͳΒͶʂ
• จࣈ͕খ͍͞߹ɺ͖ͬ͞πΠʔτͨ͠εϥΠυΛ։͍͍ͯͩ͘͞
if You.cannot.read_this?
visit "https://speakerdeck.com/jnchito/readable-test-code-vstat"
end
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ͱ͍͏Θ͚ͰɺͦΖͦΖຊฤ
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Ϧʔμϒϧςετίʔυ
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Q. ͜Μͳܦݧ͋Γ·ͤΜ͔ʁ
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https://twitter.com/jnchito/status/1539100857991852032
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Α͏Θ͔ΒΜͳΒ
approveͪ͠ΌμϝͰ͢'
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https://twitter.com/jnchito/status/1539100861947064320
͖ͬ͞ͷπΠʔτͷଓ͖
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ςετίʔυʹ͓͍ͯɺաͳ
DRYಡΈ͢͞ͷఢ
DRY = Don't Repeat YourselfͷུͰίʔυσʔλͷॏෳΛͳͤ͘ɺͱ͍͏ݪଇ
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ςετίʔυʹ͓͍ͯɺաͳ
DRYಡΈ͢͞ͷఢ
DRY = Don't Repeat YourselfͷུͰίʔυσʔλͷॏෳΛͳͤ͘ɺͱ͍͏ݪଇ
ੲͷͰ͢
ը૾ʮѱ॥ը૾δΣωϨʔλʯͰ࡞
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Ϧʔμϒϧͳςετίʔυͷ݅
✅ υΩϡϝϯτͷΑ͏ʹ্͔ΒԼʹૉʹಡΈԼͤΔ
✅ มΛΘͣʹจࣈྻΛϕλॻ͖͢Δ
✅ ڽͬͨςΫχοΫΛཚ༻͠ͳ͍
❌ ϧʔϓॲཧ݅ذ͕සൃ͢Δʢࢹઢ্͕Լͨ͠Γδϟϯϓͨ͠Γ͢Δʣ
❌ จࣈྻͷΑ͏ͳ୯७ͳσʔλ·Ͱશ෦มʹ֨ೲ͞Ε͍ͯΔ
❌ shared examplessubjectͳͲɺςεςΟϯάFWݻ༗ͷػೳΛཚ༻͍ͯ͠Δ
ରʹ͢ΔͱʮಡΈʹ͍͘ςετίʔυʯͷͰ͖͕͋Γʂʂ
ϑϨʔϜϫʔΫ
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ݡͯ͘ϩδΧϧͳςετίʔυΑΓɺ
୭ͰಡΊΔ۪ͳςετίʔυΛʂ
ඇΤϯδχΞͰʂ
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࣮ࡍʹૺ۰ͨ͠ςετίʔυͰઆ໌
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22
ࠓճςετ͢Δϝιου = UserΫϥεͷageϝιου
def age
today = Date.today
this_years_birthday = Date.new(
today.year, birth_date.month, birth_date.day)
ret = today.year - birth_date.year
if today < this_years_birthday
ret -= 1
end
ret
end
• ༷ϩδοΫ͋͑ͯઆ໌͠·ͤΜ
※ աڈʹ࣮ࡍʹίʔυϨϏϡʔͨ͠ϓϩάϥϜͱͦͷςετίʔυΛҰ෦վม͍ͯ͠·͢
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23
͕ϨϏϡʔͨ͠ςετίʔυ͜Ε
let(:user) { create(:user, birth_date: Faker::Date.birthday) }
let(:this_year) { Date.today.year }
let(:this_years_birthday) {
Date.new(this_year, user.birth_date.month, user.birth_date.day) }
let(:age) { this_year - user.birth_date.year }
context "ੜҎ߱ͷ߹" do
it "ੜΛա͗ͨྸ͕ฦΔ" do
travel_to(this_years_birthday)
expect(user.age).to eq(age)
end
end
context "ੜҎલͷ߹" do
it "ੜલͷྸ͕ฦΔ" do
travel_to(this_years_birthday.yesterday)
expect(user.age).to eq(age - 1)
end
end
ɿageϝιουͲΜͳ༷ʁ
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https://twitter.com/jnchito/status/1539100857991852032
࠶ܝ
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͖ͬ͞ͷςετίʔυɺapprove͢Δʁ
✅:&4 ❌/0
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͠·ͤΜ'
❌/0
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ͳͥͳΒϦʔμϒϧͰͳ͍͔Β
❌/0
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ςετίʔυͷ͔Β͘ΓΛಡΈղ͘
⚠ ղઆ͕ඞཁͳςετίʔυʹͳͬͯΔ࣌Ͱ͓͔͍ͦͦ͠Αʂ
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let(:user) { create(:user, birth_date: Faker::Date.birthday) }
let(:this_year) { Date.today.year }
let(:this_years_birthday) {
Date.new(this_year, user.birth_date.month, user.birth_date.day) }
let(:age) { this_year - user.birth_date.year }
context "ੜҎ߱ͷ߹" do
it "ੜΛա͗ͨྸ͕ฦΔ" do
travel_to(this_years_birthday)
expect(user.age).to eq(age)
end
end
context "ੜҎલͷ߹" do
it "ੜલͷྸ͕ฦΔ" do
travel_to(this_years_birthday.yesterday)
expect(user.age).to eq(age - 1)
end
end
ςετ͢Δϝιου
ςετ͢Δϝιου
let(:x) { 1 } ɹ x = 1
Έ͍ͨͳΠϝʔδ
travel_to ҾͰࢦఆͨ͠ʹγεςϜΛมߋ͢Δϝιου
←
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let(:user) { create(:user, birth_date: Faker::Date.birthday) }
let(:this_year) { Date.today.year }
let(:this_years_birthday) {
Date.new(this_year, user.birth_date.month, user.birth_date.day) }
let(:age) { this_year - user.birth_date.year }
context "ੜҎ߱ͷ߹" do
it "ੜΛա͗ͨྸ͕ฦΔ" do
travel_to(this_years_birthday)
expect(user.age).to eq(age)
end
end
context "ੜҎલͷ߹" do
it "ੜલͷྸ͕ฦΔ" do
travel_to(this_years_birthday.yesterday)
expect(user.age).to eq(age - 1)
end
end
travel_to ҾͰࢦఆͨ͠ʹγεςϜΛมߋ͢Δϝιου
ςετ͢Δϝιου
ςετ͢Δϝιου
let(:x) { 1 } ɹ x = 1
Έ͍ͨͳΠϝʔδ
←
←ϥϯμϜʹܾ·ΔUserͷੜ݄
←γεςϜ͔ΒʮࠓʯΛऔಘʢ2022ͳͲʣ
←ಈతʹੜ͞ΕΔʮࠓͷੜʯ
←ಈతʹੜ͞ΕΔʮࠓͷྸʯ
্Ͱੜͨ͠ʮࠓͷྸʯͱageϝιουͷΓ͕Ұக͢Δ͜ͱΛݕূ
←γεςϜΛʮࠓͷੜͷલʯʹมߋ
্Ͱੜͨ͠ʮࠓͷྸʯΑΓ1ࡀए͘ͳΔ͜ͱΛݕূ
←γεςϜΛʮࠓͷੜʯʹมߋ
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……+
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Θ͔Δ͜ͱɿϝϞϦΛফඅ͢Δ
ςετίʔυϦʔμϒϧͰͳ͍
ࢀߟจݙɿClean Test Code Revised (by Shinichi Maeshima)
https://speakerdeck.com/willnet/clean-test-code-revised
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ͦ͜ͰɺมΛͳͯ͘͠ΈΔ
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let(:user) { create(:user, birth_date: "1977/07/17".to_date) }
context "ੜҎ߱ͷ߹" do
it "ੜΛա͗ͨྸ͕ฦΔ" do
travel_to("2022/07/17".to_date)
expect(user.age).to eq(45)
end
end
context "ੜΑΓҎલͷ߹" do
it "ੜલͷྸ͕ฦΔ" do
travel_to("2022/07/16".to_date)
expect(user.age).to eq(44)
end
end
ςετ͢Δϝιου
ςετ͢Δϝιου
্͔ΒԼʹಡΊΔΑ͏ʹͳͬͨʹʂ
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let(:user) { create(:user, birth_date: "1977/07/17".to_date) }
context "ੜҎ߱ͷ߹" do
it "ੜΛա͗ͨྸ͕ฦΔ" do
travel_to("2022/07/17".to_date)
expect(user.age).to eq(45)
end
end
context "ੜΑΓҎલͷ߹" do
it "ੜલͷྸ͕ฦΔ" do
travel_to("2022/07/16".to_date)
expect(user.age).to eq(44)
end
end
ςετ͢Δϝιου
ςετ͢Δϝιου
্͔ΒԼʹಡΊΔΑ͏ʹͳͬͨʹʂ
←ੜ݄19777݄17
←γεςϜΛ20227݄17ͱ͢Δ
ageϝιουʮ45ࡀʯΛฦ͢
←γεςϜΛ20227݄16ͱ͢Δ
ageϝιουʮ44ࡀʯΛฦ͢
্͔ΒԼʹಡΊΔΑ͏ʹͳͬͨʹʂ
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&
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ϝϞϦͷফඅΛ͑Δ΄Ͳ
ϦʔμϒϧͳςετίʔυʹͳΔ
ࢀߟจݙɿClean Test Code Revised (by Shinichi Maeshima)
https://speakerdeck.com/willnet/clean-test-code-revised
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38
ςετίʔυҰछͷ༷ॻ
def age
today = Date.today
this_years_birthday = Date.new(
today.year, birth_date.month, birth_date.day)
ret = today.year - birth_date.year
if today < this_years_birthday
ret -= 1
end
ret
end
͋
͋
• ςετίʔυΛݟΕϝιουͷৼΔ͍͕͙͢Θ͔Δͷ͕ཧ
context "ੜҎ߱ͷ߹" do
it "ੜΛա͗ͨྸ͕ฦΔ" do
travel_to("2022/07/17".to_date)
expect(user.age).to eq(45)
end
end
context "ੜΑΓҎલͷ߹" do
it "ੜલͷྸ͕ฦΔ" do
travel_to("2022/07/16".to_date)
expect(user.age).to eq(44)
end
end
RubyΛΒͳ͍ਓͰςετίʔυ
ͳΒΘ͔Δɺͱ͍͏ঢ়ଶΛࢦͦ͏
#
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APIυΩϡϝϯτͷαϯϓϧίʔυͱߟ͑ํಉ͡
APIυΩϡϝϯταϯϓϧίʔυϕλॻ͖͕جຊ
ग़య: https://docs.ruby-lang.org/ja/latest/method/File/s/basename.html
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͠APIυΩϡϝϯτ͕ϕλॻ͖͡Όͳ͔ͬͨΒ……
,
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࣮ߦՄೳͳAPIυΩϡϝϯτͩͱ
ࢥͬͯςετίʔυΛॻ͜͏
ςετίʔυϓϩάϥϜ
͡Όͳͯ͘υΩϡϝϯτʂ
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ͦͷଞͷτϐοΫ
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43
E2EςετͰߟ͑ํಉ͡
click_link user.name
expect(page).to have_text "#{user.name}ͷه"
❌ ը໘্ͷཁૉΛมͰࢦఆ͢Δ
click_link "͋Γ͢"
expect(page).to have_text "͋Γ͢ͷه"
✅ ը໘্ͷཁૉΛϕλॻ͖Ͱࢦఆ͢Δ
มΛଟ༻͢ΔͱνϦπϞͰ͡Θ͡ΘͱϝϞϦΛফඅ͠·͢……ʂʂ
※ E2Eςετ = End to Endςετɻϒϥβૢ࡞ΛࣗಈԽ͠ɺγεςϜશମͷಈ࡞Λݕূ͢Δ
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·ͩ͋ΔϦʔμϒϧʹ͢Δίπ
• ࣮ࡍͷϢʔεέʔεʹ͍ۙςετσʔλΛ༻͢Δ
‣ ʮ͋͋͋ʯʮςετςετʯʮϢʔβʔ̍ʯΈ͍ͨͳςετσʔλNG
• describe/context/itͷઆ໌Λஸೡʹॻ͘
‣ ʮit "దͳΛฦ͢"ʯΈ͍ͨͳ۩ମੑͷͳ͍આ໌NG
• ͯ͢ͷใ͕̍ը໘ʹऩ·Δςετίʔυ͕ཧ
‣ ্ԼεΫϩʔϧ͕සൟʹൃੜͨ͠ΓɺଞͷϑΝΠϧΛݟʹߦ͔ͳ͖Ό͍͚ͳ͍ͷNG
• DRYېࢭ͋͘·ͰݪଇɻదٓϝϦοτͱσϝϦοτΛఱṝʹ͔͚Δ
‣ ʮ໌֬ͳϝϦοτ͕͋ΔDRYʯʮՄಡੑΛଛͳΘͳ͍நԽʯ·Ͱ์غ͢ΔͷNG
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45
ৄ͘͠WebͰʂ
• ʲॳ৺ऀ͚ʳςετίʔυͷํΛߟ͑ΔʢԿΛςετ͖͔͢ʁͲΜͳςετΛॻ͖͔͘ʁʣ
https://qiita.com/jnchito/items/2a5d3e15761fd413657a
• ͳͥςετΛॻ͘ͷʁʢ·ͨॻ͔ͳ͍ͷʁʣ ʙςετίʔυͷ7ͭͷׂʙ
https://speakerdeck.com/jnchito/number-tamarubykaigi01
• ςετίʔυͷظDRYΛࣺͯͯϕλॻ͖͢Δ ʙςετίʔυͷॏཁͳׂͱʁʙ
https://qiita.com/jnchito/items/eb3cfa9f7db752dcb796
• ͕RSpecͰsubjectΛΘͳ͍ཧ༝
https://blog.jnito.com/entry/2021/10/09/105651
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·ͱΊ
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47
ࠓͷ͓͞Β͍
subject { "ςετίʔυ" }
• subject ʹ͓͍ͯɺաͳDRYಡΈ͢͞ͷఢ
• ݡͯ͘ϩδΧϧͳ subject ΑΓɺ୭ͰಡΊΔ۪ͳ subject Λʂ
• ϝϞϦΛΘͳ͍ subject ΄ͲϦʔμϒϧ
• ࣮ߦՄೳͳAPIυΩϡϝϯτͩͱࢥͬͯ subject Λॻ͜͏
͋ΕʁͳΜ͔ಡΈͮΒ͍ͳ……
subject { "foo" } ɹ subject = "foo"
※ɹɹɹɹɹɹɹɹɹɹɹ ɹɹɹɹɹɹ Έ͍ͨͳΠϝʔδ
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͓ͬͱɺ͍͢·ͤΜʂ
͍ͭɺDRYʹॻ͖ͨ͘ͳΔΫη͕-
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ͪΌΜͱϕλॻ͖͠·͢.
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50
ࠓͷ͓͞Β͍
• ςετίʔυʹ͓͍ͯɺաͳDRYಡΈ͢͞ͷఢ
• ݡͯ͘ϩδΧϧͳςετίʔυΑΓɺ୭ͰಡΊΔ۪ͳςετίʔυΛʂ
• ϝϞϦΛΘͳ͍ςετίʔυ΄ͲϦʔμϒϧ
• ࣮ߦՄೳͳAPIυΩϡϝϯτͩͱࢥͬͯςετίʔυΛॻ͜͏
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https://twitter.com/jnchito/status/1539100857991852032
࠶ܝʢ2ճʣ
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ϦʔμϒϧͳςετίʔυΛॻ͍ͯ
ࣗ৴ΛͬͯϤγʂͯ͠Β͍·͠ΐ͏
-(5.
jnchito
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͝ਗ਼ௌ
!KODIJUP
CMPHKOJUPDPN
ɹɹɹ͋Γ͕ͱ͏͍͟͝·ͨ͠