public void With_EmptyJson_Return_Null()
{
Mock <IDataProvider> dataProvider = new Mock <IDataProvider>();
dataProvider.Setup(d => d.Provide()).Returns("");
IOperationEngine engine = new OperationEngine(dataProvider.Object);
Assert.IsNull(engine.Run());
}
public void With_InvalidOperator_Throws_Exception()
{
Mock <IDataProvider> dataProvider = new Mock <IDataProvider>();
string json = "{\r\n \"parm1\": 8,\r\n \"parm2\": 8,\r\n \"op\": \"abc\"\r\n}";
dataProvider.Setup(d => d.Provide()).Returns(json);
IOperationEngine engine = new OperationEngine(dataProvider.Object);
Assert.IsNull(engine.Run());
}
public void With_ValidData_Return_Complete_Dto()
{
Mock <IDataProvider> dataProvider = new Mock <IDataProvider>();
string json = "{\r\n \"parm1\": 8,\r\n \"parm2\": 8,\r\n \"op\": \"-\"\r\n}";
dataProvider.Setup(d => d.Provide()).Returns(json);
IOperationEngine engine = new OperationEngine(dataProvider.Object);
var dto = engine.Run();
Assert.IsNotNull(dto);
Assert.AreEqual(dto.Operator, "-");
Assert.AreEqual(dto.Parameter1, "8");
Assert.AreEqual(dto.Parameter2, "8");
Assert.AreEqual(dto.Result, "0");
}