public void get_value_for_property()
{
var dt = new { id = "23" };
Expression <Func <Test, bool> > data = t => t.Data == dt.id;
Assert.Equal("23", ObjectExtend.CastAs <MemberExpression>(data.Body.CastAs <BinaryExpression>().Right).GetValue());
}
public void FactMethodName()
{
Expression <Func <Test, bool> > data = t => new[] { 1, 2 }.Contains(t.Id);
var meth = ObjectExtend.CastAs <MethodCallExpression>(data.Body);
Assert.Equal("Contains", meth.Method.Name);
var param = ObjectExtend.CastAs <MemberExpression>(meth.Arguments[1]);
Assert.True(param.BelongsToParameter());
var sb = new StringBuilder();
sb.Append(param.Member.Name).Append(" in (");
var list = ObjectExtend.CastAs <IEnumerable>(meth.Arguments[0].GetValue());
var en = list.GetEnumerator();
while (en.MoveNext())
{
sb.Append(en.Current).Append(",");
}
sb.RemoveLast();
sb.Append(")");
Write(sb.ToString());
}
public void parameter_is_argument_of_method_call()
{
var l = new[] { "a", "b" };
Expression <Func <Test, bool> > data = t => l.Contains(t.Data);
Assert.True(ObjectExtend.CastAs <MethodCallExpression>(data.Body).HasParameterArgument());
}
public void get_value_for_field()
{
var id = "23";
Expression <Func <Test, bool> > data = t => t.Data == id;
Assert.Equal("23", ObjectExtend.CastAs <MemberExpression>(data.Body.CastAs <BinaryExpression>().Right).GetValue());
}
public void member_belongs_to_paramater_of_type()
{
Expression <Func <Test, bool> > data = t => t.Data == "23";
Assert.True(ObjectExtend.CastAs <MemberExpression>(data.Body.CastAs <BinaryExpression>().Left).BelongsToParameter(typeof(Test)));
}
public void complex_member_belongs_to_paramater()
{
Expression <Func <Test, bool> > data = t => t.Child.Child.Child.Data == "23";
Assert.True(ObjectExtend.CastAs <MemberExpression>(data.Body.CastAs <BinaryExpression>().Left).BelongsToParameter());
}
public void expression_with_initializer()
{
Expression <Func <Test, bool> > data = t => DateTime.UtcNow > new DateTime(2, 2, 2);
Assert.Equal(new DateTime(2, 2, 2), ObjectExtend.CastAs <BinaryExpression>(data.Body).Right.GetValue());
}
public void get_value_for_property_returned_by_method()
{
Expression <Func <Test, bool> > data = t => t.Data == this.TestId().Data;
Assert.Equal("29", ObjectExtend.CastAs <BinaryExpression>(data.Body).Right.GetValue());
}
public void get_value_for_property_returning_from_method_call()
{
Expression <Func <Test, bool> > data = t => t.Data == this.TestId().Bla().ToString();
Assert.Equal("0", ObjectExtend.CastAs <MethodCallExpression>(data.Body.CastAs <BinaryExpression>().Right).GetValue());
}
public void get_value_for_method_call_with_argument()
{
Expression <Func <Test, bool> > data = t => t.Data == this.Id(2);
Assert.Equal("2", ObjectExtend.CastAs <MethodCallExpression>(data.Body.CastAs <BinaryExpression>().Right).GetValue());
}
public void member_is_parameter()
{
Expression <Func <int, bool> > data = t => t == 23;
Assert.True(ObjectExtend.CastAs <BinaryExpression>(data.Body).Left.IsParameter(typeof(int)));
}
