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Delphi DSharp Mock 抛出意外调用错误 - 为什么?

转载 作者:行者123 更新时间:2023-12-04 07:26:22 26 4
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在带有 DSharp Mock 的 Delphi DUnit 测试中使用记录类型作为接口(interface)时,它正在抛出和意外调用,但我不知道为什么?我在下面创建了测试控制台应用程序。

program ConsoleStuff;

{$APPTYPE CONSOLE}

{$R *.res}

uses
DSharp.Testing.Mock,
DUnitTestRunner,
Spring,
TestFramework,
System.SysUtils;

type

{$M+}
IMyType = interface
['{D3F69229-1B46-4FE2-B078-80AA313FB601}']
function GetNullableSingle: Nullable<Single>;
function GetSingleValue: Single;
procedure SetNullableSingle(const Value: Nullable<Single>);
procedure SetSingleValue(const Value: Single);
property NullableSingle: Nullable<Single> read GetNullableSingle write SetNullableSingle;
property SingleValue: Single read GetSingleValue write SetSingleValue;
end;

TMyType = class(TInterfacedObject, IMyType)
private
FNullableSingle: Nullable<Single>;
FSingleValue: Single;
function GetNullableSingle: Nullable<Single>;
function GetSingleValue: Single;
procedure SetNullableSingle(const Value: Nullable<Single>);
procedure SetSingleValue(const Value: Single);
public
property NullableSingle: Nullable<Single> read GetNullableSingle write SetNullableSingle;
end;

TMyOtherType = class
private
FMyType: IMyType;
public
constructor Create(const AMyType: IMyType);
procedure SetMyTypeValue(const AValue: Nullable<Single>);
end;

TMyOtherTypeTests = class( TTestCase)
published
procedure UnexpectedInvocation;
end;

{ TMyType }

function TMyType.GetNullableSingle: Nullable<Single>;
begin
Result := FNullableSingle;
end;

function TMyType.GetSingleValue: Single;
begin
Result := FSingleValue;
end;

procedure TMyType.SetNullableSingle(const Value: Nullable<Single>);
begin
FNullableSingle := Value;
end;

procedure TMyType.SetSingleValue(const Value: Single);
begin
FSingleValue := Value;
end;

{ TMyOtherType }

constructor TMyOtherType.Create(const AMyType: IMyType);
begin
FMyType := AMyType;
end;

procedure TMyOtherType.SetMyTypeValue(const AValue: Nullable<Single>);
begin
FMyType.SetSingleValue(AValue.Value); // This works OK
FMyType.SetNullableSingle(AValue); // This DOES NOT work
end;

{ TMyOtherTypeTests }

procedure TMyOtherTypeTests.UnexpectedInvocation;
var
LMyOtherType: TMyOtherType;
LMyType: Mock<IMyType>;
begin
LMyType.Setup.WillExecute.Once.WhenCalling.SetSingleValue(Nullable<Single>.Create(10)); // This is OK
LMyType.Setup.WillExecute.Once.WhenCalling.SetNullableSingle(Nullable<Single>.Create(10)); // This is NOT OK
//LMyType.Setup.WillExecute.Once.WhenCallingWithAnyArguments.SetNullableSingle(Nullable<Single>.Create(10)); // This line WORKS OK
LMyOtherType := TMyOtherType.Create(LMyType);
LMyOtherType.SetMyTypeValue(Nullable<Single>.Create(10));
LMyType.Verify;
end;

begin
try
RegisterTests('TMyOtherType', [TMyOtherTypeTests.Suite]);
DUnitTestRunner.RunRegisteredTests;
Readln;
except
on E: Exception do
Writeln(E.ClassName, ': ', E.Message);
end;
end.
测试可以使用“WhenCallingWithAnyArguments”方法,但我确实需要“WhenCalling”方法来检查分配给属性 setter 的值。
我仅将 Nullable<> 类型用于演示目的,其他 Record 类型也失败了。
请帮忙!

最佳答案

DSharp Mocks 不支持所有类型的参数匹配(参见 SameValue 中的 DSharp.Core.Reflection )。
你当然可以解决这个问题,但我建议你迁移到 Spring.Mocking它的 API 略有不同,但为所有类型提供参数匹配,并且功能更强大。

关于Delphi DSharp Mock 抛出意外调用错误 - 为什么?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/68202613/

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