private void TestCastToString(Char?x, String expectedValue)
{
_Char column1 = x;
_String expr = column1.CastToString();
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(Char?), typeof(String));
expr.VerifyEval(expectedValue);
}
private void TestFromChar(Char?x, WeekDay?expectedValue)
{
_Char column1 = x;
var expr = (_CharEnum <WeekDay>)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(Char?), typeof(WeekDay?));
expr.VerifyEval(expectedValue);
}
private void TestFromString(String x, Char?expectedValue)
{
_String column1 = x;
_Char expr = (_Char)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(String), typeof(Char?));
expr.VerifyEval(expectedValue);
}
private void TestLessThan(Char?x, Char?y, bool?expectedValue)
{
_Char column1 = x;
_Char column2 = y;
var expr = column1 < column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.LessThan, column1, column2);
expr.VerifyEval(expectedValue);
}
private void TestGreaterThanOrEqual(Char?x, Char?y, bool?expectedValue)
{
_Char column1 = x;
_Char column2 = y;
var expr = column1 >= column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.GreaterThanOrEqual, column1, column2);
expr.VerifyEval(expectedValue);
}
private static void TestConst(char?x)
{
_Char column = _Char.Const(x);
column.VerifyConst(x);
}
private void TestImplicit(Char?x)
{
_Char column = x;
column.VerifyParam(x);
}
private void TestParam(Char?x)
{
_Char column = _Char.Param(x);
column.VerifyParam(x);
}
/// <summary>Creates a column of parameter expression.</summary>
/// <param name="x">The value of the parameter expression.</param>
/// <param name="sourceColumn">The value which will be passed to <see cref="DbParamExpression.SourceColumn"/>.</param>
/// <returns>The column of parameter expression.</returns>
public static _Char Param(Char?x, _Char sourceColumn = null)
{
return(new ParamExpression <Char?>(x, sourceColumn).MakeColumn <_Char>());
}
