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USAMI Kosuke
December 09, 2017
Programming
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Moq
Mobile Act Osaka #2
https://mobileact.connpass.com/event/68892/
USAMI Kosuke
December 09, 2017
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Transcript
Moq Mocking Framework for .NET USAMI Kosuke Fenrir Inc.
ࣗݾհ » Ӊࠤݟެี (@usamik26) » ϑΣϯϦϧגࣜձࣾ » iOS (Swift) »
Xamarin.iOS (C#)
ςετμϒϧ
୯ମςετʹ͓͚ΔҎԼͷΑ͏ͳ » ςετରͷґଘΦϒδΣΫτ͕ɾɾɾ » ωοτϫʔΫ௨৴͕ඞཁʁ » σʔλϕʔεΞΫηε͕ඞཁʁ » ͦͷ··Ͱ୯ମςετΛ࡞Γʹ͍͘
ςετμϒϧ » ࣮ࡍͷΦϒδΣΫτͷΘΓΛ༻ҙ͢Δ » ςετμϒϧʹςετ༻ͷΦϒδΣΫτ » ׂʹԠͯ͡ɺελϒɺϞοΫɺϑΣΠΫɺͳͲʹྨͰ͖Δ » ʢͦΕΒͷҧ͍ʹ͍ͭͯ͜͜ͰׂѪʣ
None
యܕతͳςετμϒϧͷ࣮ » ຊͱಉ͡ I/F Λ࣋ͭ » ௨৴ͳͲͷৼΔ͍͠ͳ͍ » ಛఆͷೖྗ͕͞ΕΔͱɺಛఆͷग़ྗΛฦ͢
ςετμϒϧΛ࣮͢Δͱ͖ͷ » ຊͱಉ͡ I/F Λ࣮͢Δͷͬͯ݁ߏΊΜͲ͍͘͞ » ୯ମςετͷͨΊʹͦ͜·ͰؤுΔͷʁ » αϙʔτͯ͘͠ΕΔϥΠϒϥϦ͕͋Δͱخ͍͠
ϥΠϒϥϦ » OCMock : iOS (Objective-C) » Mockito : Android
(Java / Kotlin) » Moq : .NET / Xamarin (C#)
Moq
Moq » Mocking Framework for .NET » https://github.com/moq/moq4 » ൃԻʮϞοΫʯ͔ʮϞοΩϡʯ
Moq ͷ͍ํ public interface IHoge { bool DoSomething(string value); }
var mock = new Mock<IHoge>(); // interface ͕ࣗಈతʹ࣮͞ΕΔ mock.Object.DoSomething("abc"); // -> false
ҙ (1) interface ͕ඞཁ » ஔ͖͍͑ͨΦϒδΣΫτͷ interface Λఆٛ͢Δ » ຊͷ
class ͦͷ interface Λ࣮͢Δ » ςετμϒϧͦͷ interface Λ࣮͢Δ » ࢀߟ : ຊͷ class Λܧঝͯ͠ςετμϒϧʹ͢Δख͋Δ
ྫɿݻఆΛฦ͢ϓϩύςΟ public interface IHoge { string Name { get; }
} var mock = new Mock<IHoge>(); mock.SetupGet(x => x.Name) .Returns("xyz"); var name = mock.Object.Name; // -> "xyz"
ྫɿSet ՄೳͳϓϩύςΟ public interface IHoge { string Name { get;
set; } } var mock = new Mock<IHoge>(); mock.SetupProperty(x => x.Name, "xyz"); mock.Object.Name = "123"; var name = mock.Object.Name; // -> "123"
ྫɿಛఆͷೖྗʹಛఆͷग़ྗΛฦ͢ public interface IHoge { bool DoSomething(string value); } var
mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething("abc")) .Returns(true); mock.Object.DoSomething("abc"); // -> true
ྫɿೖྗͷ݅Λࢦఆ͢Δ public interface IHoge { bool DoSomething(string value); } var
mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething(It.Is<string>(s => s.Length < 10))) .Returns(true); mock.Object.DoSomething("abc"); // -> true
ྫɿೖྗ༰ʹԠͨ͡ग़ྗΛฦ͢ public interface IHoge { string DoSomething(string value); } var
mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething(It.IsAny<string>())) .Returns(s => s.ToUpper()); mock.Object.DoSomething("abc"); // -> "ABC"
ςετίʔυ͔Βͷ͍ํ » ࣄલ४උ » Mock ΠϯελϯεΛੜ » Setup ΛͣΒͣΒͱॻ͘ »
mock.Object Λऔಘ͢Δ » ςετର࣮ࡍͷΦϒδΣΫτͷΘΓʹ mock.Object Λ͏
ҙ (2) ґଘΦϒδΣΫτͷࠩ͠ସ͑ » ςετର class Ͱͳ͘ interface ʹґଘ͢Δ͜ͱ »
ຊͷΦϒδΣΫτΛςετμϒϧʹࠩ͠ସ͑ΒΕΔΑ͏ʹ͢Δ͜ͱ » ίϯετϥΫλͰ͢ɺDI ίϯςφΛ͏ɺɾɾɾ
Moq Ԡ༻ฤ » ϓϩύςΟͷఆٛΛ͍͍ͪͪॻ͖ͨ͘ͳ͍ » ྫ֎ͷςετΛ͍ͨ͠ » ಛఆͷॲཧ͕ݺΕΔͨͼʹฦ͢ΛมԽ͍ͤͨ͞ » ಛఆͷॲཧ͕ͪΌΜͱݺΕ͔ͨ֬ೝ͍ͨ͠
ྫɿϓϩύςΟͷఆٛΛָʹ͢Δ public interface IHoge { string Name { get; set;
} } var mock = new Mock<IHoge>(); mock.SetupAllProperties();
ྫɿྫ֎Λൃੜͤ͞Δ public interface IHoge { bool DoSomething(string value); } var
mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething("abc")) .Throws<InvalidOperationException>();
ྫɿฦ͢ΛมԽͤ͞Δ var mock = new Mock<IHoge>(); mock.SetupSequence(x => x.DoSomething("abc")) .Returns(2)
.Returns(1) .Returns(0) .Throws<InvalidOperationException>();
ྫɿݺͼग़͞Ε͔ͨͲ͏͔Λݕূ͢Δ var mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething("abc")) .Returns(true);
mock.Verify(x => x.DoSomething("abc"), Times.AtLeastOnce());
ྫɿݺͼग़͞ΕͨࡍͷॲཧΛهड़͢Δ var mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething("abc")) .Callback(()
=> Console.WriteLine("Before returns")) .Returns(true) .Callback(() => Console.WriteLine("After returns"));
Γ͗͢ҙ » ڽΓͩ͢ͱ͍Ζ͍ΖͰ͖Δ͚Ͳɾɾɾ » ͋͘·Ͱςετ༻ͷΦϒδΣΫτ » ୯ମςετͷͱ͖͚ͩ͑Ε͍͍ » ຊʹͳΔඞཁͳ͍
·ͱΊ » ςετμϒϧΛָʹ࡞Δͷʹ Moq ศར » ʢ༨ஊɿSwift ͚ͷϥΠϒϥϦཉ͍͠ʣ