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Web։ൃʹ͓͚Δ
ςετઓུ
Place: ΏΔͪ.it
Date: 2019-06-26
Speaker: େխ࢙
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͡Ίʹ
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ςετͷ༻ޠΛཧͯ͠ΈΔ
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ࢲՈ൛ςετ༻ޠू
• E2EςετɿϢʔβʔΠϯλʔϑΣΠε͔Β
σʔλϕʔε·ͰΛҰ؏͢ΔςετɺγφϦΦ
Λ༻ҙͯ͠ਐΊΔ߹͕ଟ͍ɺผ໊γεςϜς
ετ
• ݁߹ςετɿෳͷίϯϙʔωϯτΛ݁߹͠
ͯߦ͏ςετɺػೳ୯ҐͰߦΘΕΔ߹͕ଟ
͘ϑΟʔνϟʔςετ͜ͷҰछ
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ࢲՈ൛ςετ༻ޠूʢଓʣ
• Ϣχοτςετɿ୯ҰͷιϑτΣΞίϯϙʔ
ωϯτͷΈΛରͱͨ͠ςετɺݱ࣮తʹ୯
ҰͷϑΝΠϧΛରͱ͢Δ߹͕ଟ͘ɺରʹ
Αͬͯݺͼ໊มΘΔʢϞσϧςετɾϏϡʔ
ςετͳͲʣ
• ςετμϒϧɿςετதʹίϯϙʔωϯτΛஔ
͖͑Δ༻ʢελϒɾϞοΫɾεύΠͳͲʣ
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ςετΛॻ͍ͯԿ͕خ͍͠
Ͱ͔͢ʁ
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όάͷݮগʁ
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҆৺ײʁ
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։ൃऀͷʁ
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։ൃऀͷʂ
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ͲͷΑ͏ʹςετΛॻ͘ͱɺ
։ൃऀͷ͕ͤ࠷େԽ͞ΕΔ
ͷ͔
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ϓϩάϥϚͷࡾେඒಙ
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ϓϩάϥϚͷࡾେඒಙ
• ؾ
• ၗຫ
• ଵଦ
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ςετͷࡾେඒಙ
• ͍
• ίʔυͷઃܭΛิॿ͢Δ
• ϓϩμΫγϣϯίʔυͷมߋʹৼΓճ͞Εͳ
͍
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͍ςετ
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͍ςετͷͨΊͷํ
• E2Eςετਖ਼ৗܥͷΈʢҟৗܥϢχοτς
ετͰΧόʔ͢Δʣ
• DBͷΞΫηεΛՄೳͳݶΓݮΒ͢
• ͱͯॏ͍ॲཧςετμϒϧʹஔ͖͑Δ
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ϖʔδωʔγϣϯͷ۩ମྫ
# Bad
@books = create_list(:book, 11)
visit books_url
expect(page).not_to have_content(‘Book11’)
# Good
@book = create_list(:book, 2)
PER_PAGE = 1 # తͳͭ
visit books_url
expect(page).not_to have_content(‘Book2’)
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ઃܭπʔϧͱͯ͠ͷςετ
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ςετͰઃܭ͢ΔͨΊʹ
• ݪଇɺςετΛઌʹॻ͘ʢςετϑΝʔετʣ
• ςετ͕͗͢Δɾෳࡶ͗͢Δɾ͗͢͠Δ
߹ϓϩμΫγϣϯίʔυͷ࠶ઃܭΛݕ౼
• ςετʹςετμϒϧ͕ଟ͗͢Δ߹ґ
ଘؔΛݟ͢
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ςετ͕ࠔͳίʔυྫ
# foo.rb
class Foo
def do_something(arg1, arg2, arg3 = nil, params = {})
end
end
# foo_spec.rb
context ‘when arg1 is :hoge’ do
context ‘when arg2 is…
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ςετ͕༰қͳίʔυྫ
# foo.rb
class Foo
def do_something(arg1)
bar.do_another(arg2)
end
end
# foo_spec.rb
context ‘when arg1 is :hoge’ do
before { allow(bar).to receive(:do_another) { hoge }
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มߋʹڧ͍ςετ
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ςετίʔυ
• ݪଇɺύϒϦοΫͳΠϯλʔϑΣΠεͷΈΛ
ςετ͢Δ
• Ϗϡʔςετ͠ͳ͍ʢมԽ͕͍͔ΒɺͲ
͏͚ͯͨ͠͠ΕE2EͰʣ
• ςετରͷ෦ঢ়ଶ͍͚ͬͯͳ͍
ʢΠϯελϯεมͱ͔ʣ
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͍͞͝ʹ
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ࣗಈςετ։ൃऀͷͨΊͷ
πʔϧ
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ςετ͕ͨΒ͢Λ
࠷େԽ͍͖·͠ΐ͏
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ͱ͜ΖͰɿ
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͋Μͨ୭ʁ
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ࣗݾհ
• ໊લɿେխ࢙
• ॴଐɿϑϦʔϥϯε
• ͖ͳݴޠɿRuby
• ͖ͳΤσΟλɿVim