[TestMethod] public void Construct()
{
// Arrange
var prop = typeof(string).GetProperty(nameof(string.Length)) !;
// Act
var extractor = new ReadPropertyExtractor(prop);
// Assert
extractor.FieldType.Should().Be(prop.PropertyType);
extractor.ExpectedSource.Should().Be(prop.ReflectedType);
}
[TestMethod] public void ExtractFromDerived()
{
// Arrange
var prop = typeof(Exception).GetProperty(nameof(Exception.HResult)) !;
var extractor = new ReadPropertyExtractor(prop);
var source = new ArgumentException();
// Act
var value = extractor.Execute(source);
// Assert
value.Should().Be(source.HResult);
}
[TestMethod] public void ExtractFromNull()
{
// Arrange
var prop = typeof(string).GetProperty(nameof(string.Length)) !;
var extractor = new ReadPropertyExtractor(prop);
string?source = null;
// Act
var value = extractor.Execute(source);
// Asert
value.Should().BeNull();
}
[TestMethod] public void ExtractFromExact()
{
// Arrange
var prop = typeof(string).GetProperty(nameof(string.Length)) !;
var extractor = new ReadPropertyExtractor(prop);
var source = "Oconomowoc";
// Act
var value = extractor.Execute(source);
// Assert
value.Should().Be(source.Length);
}
