public void TryReplace_OverwritesExistingValue()
{
// Arrange
var adapter = new PocoAdapter();
var contractResolver = new DefaultContractResolver();
var model = new Customer
{
Name = "Joana"
};
// Act
var replaceStatus = adapter.TryReplace(model, "Name", contractResolver, "John", out var errorMessage);
// Assert
Assert.Equal("John", model.Name);
Assert.True(replaceStatus);
Assert.True(string.IsNullOrEmpty(errorMessage), "Expected no error message");
}
public void TryReplace_ThrowsJsonPatchException_IfPropertyDoesNotExist()
{
// Arrange
var adapter = new PocoAdapter();
var contractResolver = new DefaultContractResolver();
var model = new Customer
{
Name = "Joana"
};
var expectedErrorMessage = "The target location specified by path segment 'LastName' was not found.";
// Act
var replaceStatus = adapter.TryReplace(model, "LastName", contractResolver, "Smith", out var errorMessage);
// Assert
Assert.Equal("Joana", model.Name);
Assert.False(replaceStatus);
Assert.Equal(expectedErrorMessage, errorMessage);
}
public void TryReplace_ThrowsJsonPatchException_IfNewValueIsInvalidType()
{
// Arrange
var adapter = new PocoAdapter();
var contractResolver = new DefaultContractResolver();
var model = new Customer
{
Age = 25
};
var expectedErrorMessage = "The value 'TwentySix' is invalid for target location.";
// Act
var replaceStatus = adapter.TryReplace(model, "Age", contractResolver, "TwentySix", out var errorMessage);
// Assert
Assert.Equal(25, model.Age);
Assert.False(replaceStatus);
Assert.Equal(expectedErrorMessage, errorMessage);
}
