private void TestFromString(String x, Guid?expectedValue)
{
_String column1 = x;
_Guid expr = (_Guid)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(String), typeof(Guid?));
expr.VerifyEval(expectedValue);
}
private void TestCastToString(Guid?x, String expectedValue)
{
_Guid column1 = x;
_String expr = (_String)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(Guid?), typeof(String));
expr.VerifyEval(expectedValue);
}
private void TestLessThan(Guid?x, Guid?y, bool?expectedValue)
{
_Guid column1 = x;
_Guid column2 = y;
var expr = column1 < column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.LessThan, column1, column2);
expr.VerifyEval(expectedValue);
}
private void TestGreaterThanOrEqual(Guid?x, Guid?y, bool?expectedValue)
{
_Guid column1 = x;
_Guid column2 = y;
var expr = column1 >= column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.GreaterThanOrEqual, column1, column2);
expr.VerifyEval(expectedValue);
}
/// <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 _Guid Param(Guid?x, _Guid sourceColumn = null)
{
return(new ParamExpression <Guid?>(x, sourceColumn).MakeColumn <_Guid>());
}
private void TestConst(Guid?x)
{
_Guid column = _Guid.Const(x);
column.VerifyConst(x);
}
private void TestImplicit(Guid?x)
{
_Guid column = x;
column.VerifyParam(x);
}
