private void TestFromBoolean(_Boolean x, Double?expectedValue)
{
_Double expr = (_Double)x;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(x, typeof(bool?), typeof(Double?));
expr.VerifyEval(expectedValue);
}
private void TestFromDouble(Double?x, Int32?expectedValue)
{
_Double column1 = x;
_Int32 expr = (_Int32)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(Double?), typeof(Int32?));
expr.VerifyEval(expectedValue);
}
private void TestNegate(Double?x, Double?expectedValue)
{
_Double column = x;
var expr = -column;
var dbExpr = (DbUnaryExpression)expr.DbExpression;
dbExpr.Verify(DbUnaryExpressionKind.Negate, column);
expr.VerifyEval(expectedValue);
}
private void TestCastToString(Double?x, String expectedValue)
{
_Double column1 = x;
_String expr = (_String)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(Double?), typeof(String));
expr.VerifyEval(expectedValue);
}
private void TestFromString(String x, Double?expectedValue)
{
_String column1 = x;
_Double expr = (_Double)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(String), typeof(Double?));
expr.VerifyEval(expectedValue);
}
private void TestFromDecimal(Decimal?x, Double?expectedValue)
{
_Decimal column1 = x;
_Double expr = (_Double)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(Decimal?), typeof(Double?));
expr.VerifyEval(expectedValue);
}
private void TestFromDouble(Double?x, Single?expectedValue)
{
_Double column1 = x;
_Single expr = (_Single)column1;
var dbExpr = (DbCastExpression)expr.DbExpression;
dbExpr.Verify(column1, typeof(Double?), typeof(Single?));
expr.VerifyEval(expectedValue);
}
private void TestSubstract(Double?x, Double?y, Double?expectedValue)
{
_Double column1 = x;
_Double column2 = y;
var expr = column1 - column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.Substract, column1, column2);
expr.VerifyEval(expectedValue);
}
private void TestNotEqual(Double?x, Double?y, bool?expectedValue)
{
_Double column1 = x;
_Double column2 = y;
var expr = column1 != column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.NotEqual, column1, column2);
expr.VerifyEval(expectedValue);
}
private void TestGreaterThan(Double?x, Double?y, bool?expectedValue)
{
_Double column1 = x;
_Double column2 = y;
var expr = column1 > column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.GreaterThan, column1, column2);
expr.VerifyEval(expectedValue);
}
private void TestMultiply(Double?x, Double?y, Double?expectedValue)
{
_Double column1 = x;
_Double column2 = y;
var expr = column1 * column2;
var dbExpr = (DbBinaryExpression)expr.DbExpression;
dbExpr.Verify(BinaryExpressionKind.Multiply, column1, column2);
expr.VerifyEval(expectedValue);
}
private void TestConst(Double?x)
{
_Double column = _Double.Const(x);
column.VerifyConst(x);
}
private void TestImplicit(Double?x)
{
_Double column = 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 _Double Param(Double?x, _Double sourceColumn = null)
{
return(new ParamExpression <Double?>(x, sourceColumn).MakeColumn <_Double>());
}