テストの可読性を支える技術

テストの可読性は、とても大事です。
そんな可読性をあげてくれるパッケージや考え方などを解説したので
ぜひご覧いただければ幸いです。

Transcript

1. ே೔େथ
   ςετͷՄಡੑ
   Λࢧ͑Δٕज़
   

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2. ே೔େथ
   5XJUUFSɿ!EBJLJ
   'MVUUFSྺɿ೥
   ϒϩάɿIUUQTCMPHEBMUNF
   

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3. ໨࣍
   w ςετ΋Մಡੑ͕େࣄ
   w ςετͷՄಡੑ
   ฐࣾͷϏϑΥʔΞϑλʔ
   w ςετ݁ՌͷՄಡੑ
   

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4. ࠓ೔ͷ໨ඪ
   ͎͘ʙɺςετͷՄಡੑ͋͛ͯ͐ʙ
   

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5. ຊ೔ͷ಺༰
   IUUQTHJUIVCDPNEBJLJ
   fl
   VUUFS@UFTU@XJUI@SFBEBCJMJUZ
   

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6. ຊ೔ͷ಺༰
   

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7. ຊ೔ͷྲྀΕ
   

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8. Կ΋ҙࣝͤͣॻ͍ͨ
   ςετ͕͋Δ
   

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10. ͜ΕΛ
    ͭͷύοέʔδͳͲΛ
    ࢖ͬͯՄಡੑΛ্͛ͯΈΑ͏ʂ
    

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11. ͱɺͦͷલʹʂ
    

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12. ͦ΋ͦ΋
    ςετʹՄಡੑ͸ඞཁ͔ʁ
    

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13. :&4ʂ
    

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14. ςετʹՄಡੑ͸ඞཁ͔ʁ
    w ςετ͸ίʔυͷઆ໌ॻ
    w ΋ͪΖΜਖ਼͘͠ಈ͔͘Ͳ͏͔Λ୲อ͢Δͱ͍͏ଆ໘΋͋Δ
    ͦͷҰํͰɺ
    w ࢲ͸͜͏͍͏෩ʹಈ͘ίʔυΛॻ͍ͨΑ
    w ͜͏͍͏ೖྗ஋Λ૝ఆ͍ͯ͠ΔΑ
    w ͜͏͍͏࣌͸ΤϥʔΛग़͢Α
    ͱ͍͏આ໌ॻɺҙࢥද໌ʹ΋ͳ͍ͬͯΔ
    

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15. ςετͷՄಡੑ͕௿͍
    ʹ
    Կ͕ݴ͍͍ͨͷ͔෼͔Βͳ͍
    ςετʹՄಡੑ͸ඞཁ͔ʁ
    

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16. ͔ͩΒɺςετ͸
    ಡΈ΍͘͢ॻ͜͏ͳʁ
    ݁࿦
    

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17. ςετͷՄಡੑ
    w HSPVQ
    w HJWFO@XIFO@UIFO
    w
    fl
    VUUFS@UFTU@VJ
    

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18. HSPVQ
    

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19. ςετͷՄಡੑ
    w ͝ଘ஌ͷํ΋ଟ͍͸ͣ
    w
    fl
    VUUFS@UFTUʹಉࠝ͞Ε͍ͯΔϝιου
    w ͦͷ໊ͷ௨Γɺෳ਺ͷςετΛάϧʔϓԽग़དྷΔ
    HSPVQ
    

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21. JODSFNFOUCVUUPO
    EFDSFNFOUCVUUPO
    

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22. ςετͷՄಡੑ
    

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23. ςετͷՄಡੑ
    group('[Increment Button]', () {
    
    
    group('label shows "0"', () {
    
    
    testWidgets('label shows "1"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "2"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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24. ςετͷՄಡੑ
    group('[Decrement Button]', () {
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "0"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "2"', () {
    
    
    testWidgets('label shows "1"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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25. HSPVQ
    ݸॏͳͬͱΔΜ΍͚Ͳʁ
    

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26. ςετͷՄಡੑ
    group('[Increment Button]', () {
    
    
    group('label shows "0"', () {
    
    
    testWidgets('label shows "1"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "2"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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27. ςετͷՄಡੑ
    group('[Increment Button]', () { ← describe
    
    
    group('label shows "0"', () { ← context
    
    
    testWidgets('label shows "1"' ← it, (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "2"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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28. ςετͷՄಡੑ
    w 34QFDͰ࠾༻͞Ε͍ͯΔه๏
    w EFTDSJCF
    ɹςετର৅
    w DPOUFYU
    ɹςετΛߦ͏લఏ৚݅
    w JU
    ɹͲ͏ͳ͍ͬͯΔ΂͖͔ JUTIPVMECFͷҙຯͷJU
    
    EFTDSJCF DPOUFYU JUFYBNQMF
    
    

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29. ςετͷՄಡੑ
    group('[Increment Button]', () { ← describe
    
    
    group('label shows "0"', () { ← context
    
    
    testWidgets('label shows "1"' ← it, (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "2"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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30. ςετͷՄಡੑ
    group('[Increment Button]', () { ← describe
    
    
    group('label shows "0"', () { ← context
    
    
    testWidgets('label shows "1"' ← it, (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "2"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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31. ςετͷՄಡੑ
    group('[Increment Button]', () { ← describe
    
    
    group('label shows "0"', () { ← context
    
    
    testWidgets('label shows "1"' ← it, (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "2"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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32. ςετͷՄಡੑ
    group('[Increment Button]', () {
    
    
    group('label shows "0"', () {
    
    
    testWidgets('label shows "1"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    group('label shows "1"', () {
    
    
    testWidgets('label shows "2"', (WidgetTester tester) async {
    
    
    
    
    });
    
    
    });
    
    
    });
    
    
    

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33. HJWFO@XIFO@UIFO
    

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34. ςετͷՄಡੑ
    ςετͬͯ݁ہͷͱ͜Ζ͜Μͳߏ੒Ͱ੒Γཱ͍ͬͯΔ
    HJWFO@XIFO@UIFO
    

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35. ςετͷՄಡੑ
    ͋Δ৚݅Ͱɺ͋Δಈ࡞Λͨ͠Β͜͏ͳͬͯ΄͍͠
    HJWFO@XIFO@UIFO
    

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36. ςετͷՄಡੑ
    ͋Δ৚݅Ͱɺ͋Δಈ࡞Λͨ͠Β͜͏ͳͬͯ΄͍͠
    HJWFO@XIFO@UIFO
    HJWFO
    

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37. ςετͷՄಡੑ
    ͋Δ৚݅Ͱɺ͋Δಈ࡞Λͨ͠Β͜͏ͳͬͯ΄͍͠
    HJWFO@XIFO@UIFO
    XIFO
    HJWFO
    

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38. ςετͷՄಡੑ
    ͋Δ৚݅Ͱɺ͋Δಈ࡞Λͨ͠Β͜͏ͳͬͯ΄͍͠
    HJWFO@XIFO@UIFO
    UIFO
    XIFO
    HJWFO
    

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39. ྫ͑͹
    

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40. ςετͷՄಡੑ
    ͕දࣔ͞Ε͍ͯΔ࣌ʹ
    ϓϥεϘλϯΛԡͨ͠Β
    ͕දࣔ͞Ε͍ͯͯཉ͍͠
    HJWFO@XIFO@UIFO
    HJWFO
    

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41. ςετͷՄಡੑ
    ͕දࣔ͞Ε͍ͯΔ࣌ʹ
    ϓϥεϘλϯΛԡͨ͠Β
    ͕දࣔ͞Ε͍ͯͯཉ͍͠
    HJWFO@XIFO@UIFO
    HJWFO
    XIFO
    

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42. ςετͷՄಡੑ
    ͕දࣔ͞Ε͍ͯΔ࣌ʹ
    ϓϥεϘλϯΛԡͨ͠Β
    ͕දࣔ͞Ε͍ͯͯཉ͍͠
    HJWFO@XIFO@UIFO
    HJWFO
    XIFO
    UIFO
    

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43. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    

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44. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    ͕දࣔ͞Ε͍ͯΔ࣌ʹ
    

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45. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    ϓϥεϘλϯ͕ԡ͞ΕͨΒ
    ͕දࣔ͞Ε͍ͯΔ࣌ʹ
    

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46. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    ϓϥεϘλϯ͕ԡ͞ΕͨΒ
    ͕දࣔ͞Ε͍ͯΔ࣌ʹ
    ͕දࣔ͞Ε͍ͯͯཉ͍͠
    

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47. ςετͷՄಡੑ
    ղઆ
    HJWFO@XIFO@UIFO
    

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48. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    

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49. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    

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50. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    extension MyAppGiven on WidgetTestGiven {
    
    
    Future pumpMyApp() async {
    
    
    await tester.pumpWidget(const MyApp());
    
    
    }
    
    
    Future increment() async {
    
    
    await tester.tap(find.byKey(incrementKey));
    
    
    }
    
    
    Future pump() async {
    
    
    await tester.pump();
    
    
    }
    
    
    void canFindZero() {
    
    
    expect(find.text('0'), findsOneWidget);
    
    
    }
    
    
    void cannotFindZero() {
    
    
    expect(find.text('0'), findsNothing);
    
    
    }}
    
    
    

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51. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    extension MyAppWhen on WidgetTestWhen {
    
    
    Future userTapsIncrementButton() async {
    
    
    await tester.tap(find.byKey(incrementKey));
    
    
    await tester.pump();
    
    
    }
    
    
    Future userTapsDecrementButton() async {
    
    
    await tester.tap(find.byKey(decrementKey));
    
    
    await tester.pump();
    
    
    }
    
    
    }
    
    
    

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52. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    extension MyAppThen on WidgetTestThen {
    
    
    void canFindZero() {
    
    
    expect(find.text('0'), findsOneWidget);
    
    
    }
    
    
    void cannotFindZero() {
    
    
    expect(find.text('0'), findsNothing);
    
    
    }
    
    
    void canFindOne() {
    
    
    expect(find.text('1'), findsOneWidget);
    
    
    }
    
    
    void cannotFindOne() {
    
    
    expect(find.text('1'), findsNothing);
    
    
    }
    
    
    void canFindTwo() {
    
    
    expect(find.text('2'), findsOneWidget);
    
    
    }
    
    
    void cannotFindTwo() {
    
    
    expect(find.text('2'), findsNothing);
    
    
    }
    
    
    }
    
    
    

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53. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    

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54. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "2"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    await given.increment();
    
    
    await given.pump();
    
    
    given.canFindOne();
    
    
    given.cannotFindTwo();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindOne();
    
    
    then.canFindTwo();
    
    
    }
    
    
    }));
    
    
    

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55. testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    await given.increment();
    
    
    await given.increment();
    
    
    await given.pump();
    
    
    given.canFindTwo();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsDecrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindTwo();
    
    
    then.canFindOne();
    
    
    }
    
    
    }));
    
    
    ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    

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56. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    ͪΐͬͱେม͡ΌͶʁ
    

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57. ςετͷՄಡੑ
    HJWFO@XIFO@UIFOͷ؆қ൛
    testWidgets('label shows "1"', (WidgetTester tester) async {
    
    
    // given
    
    
    {
    
    
    await tester.pumpWidget(const MyApp());
    
    
    expect(find.text('0'), findsOneWidget);
    
    
    expect(find.text('1'), findsNothing);
    
    
    }
    
    
    // when
    
    
    {
    
    
    await tester.tap(find.byKey(incrementKey));
    
    
    await tester.pump();
    
    
    }
    
    
    
    
    // then
    
    
    {
    
    
    expect(find.text('0'), findsNothing);
    
    
    expect(find.text('1'), findsOneWidget);
    
    
    }
    
    
    });
    
    
    

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58. fl
    VUUFS@UFTU@VJ
    

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59. ςετͷՄಡੑ
    GMVUUFS@UFTU@VJ
    void main() {
    
    
    setUpUI((tester) async {
    
    
    await tester.pumpWidget(const MyApp());
    
    
    });
    
    
    testUI('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }));
    
    
    }
    
    
    

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60. ςετͷՄಡੑ
    GMVUUFS@UFTU@VJ
    w testUI, setupUI, tearDownUIͳͲɺ6*ςετ༻ͷϝιουΛఏڙ
    

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61. ςετͷՄಡੑ
    GMVUUFS@UFTU@VJ
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    

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62. ςετͷՄಡੑ
    HJWFO@XIFO@UIFO
    testWidgets('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    await given.pumpMyApp();
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }),
    
    
    );
    
    
    

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63. ςετͷՄಡੑ
    GMVUUFS@UFTU@VJ
    void main() {
    
    
    setUpUI((tester) async {
    
    
    await tester.pumpWidget(const MyApp());
    
    
    });
    
    
    testUI('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }));
    
    
    }
    
    
    

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64. ςετͷՄಡੑ
    GMVUUFS@UFTU@VJ
    void main() {
    
    
    setUpUI((tester) async {
    
    
    await tester.pumpWidget(const MyApp());
    
    
    });
    
    
    testUI('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }));
    
    
    }
    
    
    

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65. ςετͷՄಡੑ
    GMVUUFS@UFTU@VJ
    void main() {
    
    
    setUpUI((tester) async {
    
    
    await tester.pumpWidget(const MyApp());
    
    
    });
    
    
    testUI('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    given.canFindZero();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsIncrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindZero();
    
    
    then.canFindOne();
    
    
    }
    
    
    }));
    
    
    }
    
    
    

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66. group('label shows "2"', () {
    
    
    setUpUI((tester) async {
    
    
    await tester.tap(find.byKey(incrementKey));
    
    
    await tester.tap(find.byKey(incrementKey));
    
    
    await tester.pump();
    
    
    });
    
    
    testUI('label shows "1"', harness((given, when, then) async {
    
    
    {
    
    
    given.canFindTwo();
    
    
    given.cannotFindOne();
    
    
    }
    
    
    {
    
    
    await when.userTapsDecrementButton();
    
    
    }
    
    
    {
    
    
    then.cannotFindTwo();
    
    
    then.canFindOne();
    
    
    }
    
    
    }));
    
    
    });
    
    
    ςετͷՄಡੑ
    GMVUUFS@UFTU@VJ
    

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67. ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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68. ฐࣾͰͷϏϑΥʔΞϑλʔ
    
    "3FRVFTU
    #3FRVFTU
    $3FRVFTU
    "QJ$MJFOU
    "3FTQPOTF
    #3FTQPOTF
    $3FTQPOTF
    $PNNBOEύλʔϯ
    "QJ
    3FRV
    FTU
    

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69. 
    "3FRVFTU
    #3FRVFTU
    $3FRVFTU
    "QJ$MJFOU
    "3FTQPOTF
    #3FTQPOTF
    $3FTQPOTF
    $PNNBOEύλʔϯ
    "QJ
    3FRV
    FTU
    ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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70. 
    "3FRVFTU
    #3FRVFTU
    $3FRVFTU
    "QJ$MJFOU
    "3FTQPOTF
    #3FTQPOTF
    $3FTQPOTF
    $PNNBOEύλʔϯ
    "QJ
    3FRV
    FTU
    ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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71. 
    "3FRVFTU
    #3FRVFTU
    $3FRVFTU
    "QJ$MJFOU
    "3FTQPOTF
    #3FTQPOTF
    $3FTQPOTF
    $PNNBOEύλʔϯ
    "QJ
    3FRV
    FTU
    ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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72. 
    ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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73. 
    ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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74. ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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75. ฐࣾͰͷϏϑΥʔΞϑλʔ
    

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76. ฐࣾͰͷϏϑΥʔΞϑλʔ
    ςετΛͭ௥Ճ͢ΔͨΊʹ༷ʑͳϑΝΠϧΛ௥Ճมߋ͢Δඞཁ͕͋Δ
    w UFTUSFTPVSDFT഑Լ
    w KTPOͷ௥Ճ
    w 'BLF"QJ$MJFOU
    w ϞοΫύεͷઃఆ
    w ๨ΕΔͱImplementationError
    
    
    w xxxTest
    σϝϦοτ
    

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77. ฐࣾͰͷϏϑΥʔΞϑλʔ
    ͪΐͬͱ͚ͩҧ͏ϨεϙϯεΛ࡞Δͷʹ৽ͨͳKTPO͕ඞཁ
    ɾ༑ୡͷ༗ແ
    ɾϑΥϩʔঢ়ଶ
    ɾϒϩοΫঢ়ଶ
    σϝϦοτ
    

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78. ฐࣾͰͷϏϑΥʔΞϑλʔ
    σϝϦοτ
    มߋʹରͯ͠ίϯύΠϧηʔϑͰͳ͍
    ɾ6TFS͔ΒϓϩύςΟΛҰͭݮΒͨ͠
    ɹɹKTPO΋ม͑ͳ͖Ό͍͚ͳ͍͜ͱͳΜͯ୭΋ؾ෇͔ͳ͍ΑͶস
    

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79. Ξϑλʔ
    

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80. ฐࣾͰͷϏϑΥʔΞϑλʔ
    Ξϑλʔ
    typedef FakeApiResponder = dynamic Function(ApiRequest);
    
    
    

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81. ฐࣾͰͷϏϑΥʔΞϑλʔ
    Ξϑλʔ
    FakeApiClientImpl appending({
    
    
    required FakeApiResponder responder,
    
    
    }) {
    
    
    return FakeApiClientImpl._(
    
    
    responders: [..._responders, responder],
    
    
    );
    
    
    }
    
    
    

    View Slide

82. )PXUPVTFʁ
    

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83. ฐࣾͰͷϏϑΥʔΞϑλʔ
    Ξϑλʔ
    void main() {
    
    
    final baseApiClient = FakeApiClientImpl.create();
    
    
    setUpAll(TestWidgetsFlutterBinding.ensureInitialized);
    
    
    // Test cases...
    
    
    }
    
    
    

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84. ฐࣾͰͷϏϑΥʔΞϑλʔ
    Ξϑλʔ
    final apiClient = baseApiClient.appending(
    
    
    responder: (request) {
    
    
    if (request is UsersRequest) {
    
    
    return _Fixtures.createUser(
    
    
    id: 'some_user_id',
    
    
    );
    
    
    }
    
    
    },
    
    
    );
    
    
    

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85. ฐࣾͰͷϏϑΥʔΞϑλʔ
    Ξϑλʔ
    class _Fixtures {
    
    
    static User createUser() {
    
    
    return User(id: 'hoge', name: 'ashdik');
    
    
    }
    
    
    }
    
    
    

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86. ฐࣾͰͷϏϑΥʔΞϑλʔ
    ςετΛͭ௥Ճ͢ΔͨΊʹ༷ʑͳϑΝΠϧΛ௥Ճมߋ͢Δඞཁ͕͋Δ
    ɹˠͦΕͧΕͷςετͷΈʂ
    ͪΐͬͱ͚ͩҧ͏ϨεϙϯεΛ࡞Δͷʹ৽ͨͳKTPO͕ඞཁ
    ɹˠ@'JYUVSFͷҾ਺ʹม͍͑ͨ஋ΛऔΔ͚ͩ
    มߋʹରͯ͠ίϯύΠϧηʔϑͰͳ͍
    ɹˠ6TFSΫϥεΛ௚઀ΠϯελϯεԽ͍ͯ͠Δ
    σϝϦοτ
    

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87. ςετ݁ՌͷՄಡੑ
    

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88. EBSU@EPU@SFQPSUFS
    

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89. ςετ݁ՌͷՄಡੑ
    w σϑΥϧτͰ͸ ओʹࣦഊ࣌
    ಡΈͮΒ͍ʜ
    GMVUUFSUFTU
    

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90. ςετ݁ՌͷՄಡੑ
    w ಡΈ΍͍͢🎉
    

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91. ςετ݁ՌͷՄಡੑ
    w EPU@SFQPSUFSΠϯεύΠΞ
    w ςετ݁ՌΛݟ΍ͯ͘͘͢͠ΕΔ
    w ʮʯ
    ɹ੒ޭ
    w ʮ9ʯ
    ɹࣦഊ
    w ʮʯ
    ɹεΩοϓ
    EBSU@EPU@SFQPSUFS
    

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92. ςετ݁ՌͷՄಡੑ
    ͩΜͩΜಡΈ΍ͯ͘͢͠ΈΑ͏
    GMVUUFSUFTUNBDIJOF
    

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93. w ҎԼ2εςοϓ
    ςετ݁ՌͷՄಡੑ
    w pubspec.yamlʹdart_dot_reporterΛ௥Ճ
    EBSU@EPU@SFQPSUFSɹʙԼ४උʙ
    GMVUUFSQVCHMPCBMBDUJWBUFEBSU@EPU@SFQPSUFS
    

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94. ςετ݁ՌͷՄಡੑ
    ͩΜͩΜಡΈ΍ͯ͘͢͠ΈΑ͏
    GMVUUFSUFTUNBDIJOFNBDIJOFMPH
    GMVUUFSQVCHMPCBMSVOEBSU@EPU@SFQPSUFSNBDIJOFMPH
    

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95. ςετ݁ՌͷՄಡੑ
    ͩΜͩΜಡΈ΍ͯ͘͢͠ΈΑ͏
    

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96. ͦͷଞ
    w SJWFSQPE
    w
    fl
    VUUFS@HIFSLJO
    w NPDLJOHKBZ
    w NPDLJUP
    w CEE@XJEHFU@UFTU
    w PHVSFUT
    ঺հ͖͠Εͳ͔ͬͨύοέʔδͨͪ
    

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97. 
    ਖ਼ࣾһ Λݟਾ͑ͨۀ຿ҕୗͷํ
    ืूதʂ
    

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98. 
    ͝ਗ਼ௌɺ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ
    

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