Moq

Mobile Act Osaka #2
https://mobileact.connpass.com/event/68892/

Transcript

1. Moq Mocking Framework for .NET USAMI Kosuke Fenrir Inc.
2. ࣗݾ঺հ » Ӊࠤݟެี (@usamik26) » ϑΣϯϦϧגࣜձࣾ » iOS (Swift) » Xamarin.iOS (C#)
3. ςετμϒϧ
4. ୯ମςετʹ͓͚ΔҎԼͷΑ͏ͳ໰୊ » ςετର৅ͷґଘΦϒδΣΫτ͕ɾɾɾ » ωοτϫʔΫ௨৴͕ඞཁʁ » σʔλϕʔεΞΫηε͕ඞཁʁ » ͦͷ··Ͱ͸୯ମςετΛ࡞Γʹ͍͘
5. ςετμϒϧ » ࣮ࡍͷΦϒδΣΫτͷ୅ΘΓΛ༻ҙ͢Δ » ςετμϒϧʹςετ༻ͷ୅໾ΦϒδΣΫτ » ໾ׂʹԠͯ͡ɺελϒɺϞοΫɺϑΣΠΫɺͳͲʹ෼ྨͰ͖Δ » ʢͦΕΒͷҧ͍ʹ͍ͭͯ͸͜͜Ͱ͸ׂѪʣ
7. యܕతͳςετμϒϧͷ࣮૷ » ຊ෺ͱಉ͡ I/F Λ࣋ͭ » ௨৴ͳͲͷৼΔ෣͍͸͠ͳ͍ » ಛఆͷೖྗ͕౉͞ΕΔͱɺಛఆͷग़ྗΛฦ͢
8. ςετμϒϧΛ࣮૷͢Δͱ͖ͷ໰୊ » ຊ෺ͱಉ͡ I/F Λ࣮૷͢Δͷͬͯ݁ߏΊΜͲ͍͘͞ » ୯ମςετͷͨΊʹͦ͜·ͰؤுΔͷʁ » αϙʔτͯ͘͠ΕΔϥΠϒϥϦ͕͋Δͱخ͍͠
9. ϥΠϒϥϦ » OCMock : iOS (Objective-C) » Mockito : Android (Java / Kotlin) » Moq : .NET / Xamarin (C#)
10. Moq
11. Moq » Mocking Framework for .NET » https://github.com/moq/moq4 » ൃԻ͸ʮϞοΫʯ͔ʮϞοΩϡʯ
12. Moq ͷ࢖͍ํ public interface IHoge { bool DoSomething(string value); } var mock = new Mock<IHoge>(); // interface ͕ࣗಈతʹ࣮૷͞ΕΔ mock.Object.DoSomething("abc"); // -> false
13. ஫ҙ (1) interface ͕ඞཁ » ஔ͖׵͍͑ͨΦϒδΣΫτͷ interface Λఆٛ͢Δ » ຊ෺ͷ class ͸ͦͷ interface Λ࣮૷͢Δ » ςετμϒϧ΋ͦͷ interface Λ࣮૷͢Δ » ࢀߟ : ຊ෺ͷ class Λܧঝͯ͠ςετμϒϧʹ͢Δख΋͋Δ
14. ྫɿݻఆ஋Λฦ͢ϓϩύςΟ public interface IHoge { string Name { get; } } var mock = new Mock<IHoge>(); mock.SetupGet(x => x.Name) .Returns("xyz"); var name = mock.Object.Name; // -> "xyz"
15. ྫ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"
16. ྫ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
17. ྫɿೖྗͷ৚݅Λࢦఆ͢Δ 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
18. ྫɿೖྗ಺༰ʹԠͨ͡ग़ྗΛฦ͢ 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"
19. ςετίʔυ͔Βͷ࢖͍ํ » ࣄલ४උ » Mock ΠϯελϯεΛੜ੒ » Setup ΛͣΒͣΒͱॻ͘ » mock.Object Λऔಘ͢Δ » ςετର৅͸࣮ࡍͷΦϒδΣΫτͷ୅ΘΓʹ mock.Object Λ࢖͏
20. ஫ҙ (2) ґଘΦϒδΣΫτͷࠩ͠ସ͑ » ςετର৅͸ class Ͱ͸ͳ͘ interface ʹґଘ͢Δ͜ͱ » ຊ෺ͷΦϒδΣΫτΛςετμϒϧʹࠩ͠ସ͑ΒΕΔΑ͏ʹ͢Δ͜ͱ » ίϯετϥΫλͰ౉͢ɺDI ίϯςφΛ࢖͏ɺɾɾɾ
21. Moq Ԡ༻ฤ » ϓϩύςΟͷఆٛΛ͍͍ͪͪॻ͖ͨ͘ͳ͍ » ྫ֎ͷςετΛ͍ͨ͠ » ಛఆͷॲཧ͕ݺ͹ΕΔͨͼʹฦ͢஋ΛมԽ͍ͤͨ͞ » ಛఆͷॲཧ͕ͪΌΜͱݺ͹Ε͔ͨ֬ೝ͍ͨ͠
22. ྫɿϓϩύςΟͷఆٛΛָʹ͢Δ public interface IHoge { string Name { get; set; } } var mock = new Mock<IHoge>(); mock.SetupAllProperties();
23. ྫɿྫ֎Λൃੜͤ͞Δ public interface IHoge { bool DoSomething(string value); } var mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething("abc")) .Throws<InvalidOperationException>();
24. ྫɿฦ͢஋ΛมԽͤ͞Δ var mock = new Mock<IHoge>(); mock.SetupSequence(x => x.DoSomething("abc")) .Returns(2) .Returns(1) .Returns(0) .Throws<InvalidOperationException>();
25. ྫɿݺͼग़͞Ε͔ͨͲ͏͔Λݕূ͢Δ var mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething("abc")) .Returns(true); mock.Verify(x => x.DoSomething("abc"), Times.AtLeastOnce());
26. ྫɿݺͼग़͞ΕͨࡍͷॲཧΛهड़͢Δ var mock = new Mock<IHoge>(); mock.Setup(x => x.DoSomething("abc")) .Callback(() => Console.WriteLine("Before returns")) .Returns(true) .Callback(() => Console.WriteLine("After returns"));
27. ΍Γ͗͢஫ҙ » ڽΓͩ͢ͱ͍Ζ͍ΖͰ͖Δ͚Ͳɾɾɾ » ͋͘·Ͱςετ༻ͷ୅໾ΦϒδΣΫτ » ୯ମςετͷͱ͖͚ͩ࢖͑Ε͹͍͍ » ຊ෺ʹͳΔඞཁ͸ͳ͍
28. ·ͱΊ » ςετμϒϧΛָʹ࡞Δͷʹ Moq ͸ศར » ʢ༨ஊɿSwift ޲͚ͷϥΠϒϥϦ΋ཉ͍͠ʣ