public void TestFactoryRegisterNull()
{
//Given
IValueExpressionGenerator conv = null;
//Then
Assert.ThrowsAny <ArgumentNullException>(() => ValueExpressionGeneratorFactory.Register(conv));
}
public void TestFactoryRegister()
{
//Give
var conv = new StringExpressionGenerator();
//When
ValueExpressionGeneratorFactory.Register(conv);
//Then
Assert.Equal(typeof(string), ValueExpressionGeneratorFactory.Get <string>().GeneratingType);
}