public void Transform_ShouldConvertToDecrementTest()
{
Expression <Func <int, int> > source = (x) => x - 1;
var actual = new ExpressionVisitorTransformer().VisitAndConvert(source, "");
Assert.AreEqual("x => Decrement(x)", actual?.ToString());
}
public void Transform_ShouldNotConvert_WhenExpressionIsNotContainValueToConvert_Test()
{
Expression <Func <int, int> > source = (x) => x - 2;
var actual = new ExpressionVisitorTransformer().VisitAndConvert(source, "");
Assert.AreEqual("x => (x - 2)", actual?.ToString());
}
public void Transform_ShouldConvertToIncrement_Test()
{
Expression <Func <double, double> > source = (x) => x + 1.0;
var actual = new ExpressionVisitorTransformer().VisitAndConvert(source, "");
Assert.AreEqual("x => Increment(x)", actual?.ToString());
}
public void Transform_ShouldConvertToConstant_WhebParameterIsExist_Test()
{
Expression <Func <int, int, int, int> > source = (a, b, c) => a + b + c;
var actual = new ExpressionVisitorTransformer().Transform(source, new Dictionary <string, object>
{
{ "a", 1993 },
{ "c", 2020 }
});
Assert.AreEqual("b => 1993 + b + 2020", actual?.ToString().Replace("(", "").Replace(")", ""));
}