public void VisitExpression_ThrowsOnInvalidContext ()
{
var expression = new CustomExpression (typeof (string));
var visitor = new TestableSqlContextExpressionVisitor ((SqlExpressionContext) (-1), _stageMock, _mappingResolutionContext);
visitor.VisitExpression (expression);
}
public void VisitExpression_AppliesSpecifiedSemantics ()
{
var entityExpression = SqlStatementModelObjectMother.CreateSqlEntityDefinitionExpression (typeof (Cook));
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.ValueRequired, _stageMock, _mappingResolutionContext);
var result = visitor.VisitExpression (entityExpression);
Assert.That (result, Is.SameAs (entityExpression));
}
public void VisitExpression_ConvertedInt_ToPredicate ()
{
var expression = new SqlConvertedBooleanExpression (new CustomExpression (typeof (int)));
var nullableExpression = new SqlConvertedBooleanExpression (new CustomExpression (typeof (int?)));
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.PredicateRequired, _stageMock, _mappingResolutionContext);
var result = visitor.VisitExpression (expression);
var resultNullable = visitor.VisitExpression (nullableExpression);
var expected = Expression.Equal (expression.Expression, new SqlLiteralExpression (1));
SqlExpressionTreeComparer.CheckAreEqualTrees (expected, result);
var expectedNullable = Expression.Equal (nullableExpression.Expression, new SqlLiteralExpression (1, true), true, null);
SqlExpressionTreeComparer.CheckAreEqualTrees (expectedNullable, resultNullable);
}
public void VisitExpression_ThrowsOnNonConvertible_ToPredicate ()
{
var expression = new CustomExpression (typeof (string));
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.PredicateRequired, _stageMock, _mappingResolutionContext);
visitor.VisitExpression (expression);
}
public void VisitExpression_LeavesExistingPredicate ()
{
var expression = new CustomExpression (typeof (bool));
var nullableExpression = new CustomExpression (typeof (bool?));
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.PredicateRequired, _stageMock, _mappingResolutionContext);
var result = visitor.VisitExpression (expression);
var resultNullable = visitor.VisitExpression (nullableExpression);
Assert.That (result, Is.SameAs (expression));
Assert.That (resultNullable, Is.SameAs (nullableExpression));
}
public void VisitExpression_SingleValueRequired_LeavesExistingSingleValue ()
{
var expression = new CustomExpression (typeof (int));
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.SingleValueRequired, _stageMock, _mappingResolutionContext);
var result = visitor.VisitExpression (expression);
Assert.That (result, Is.SameAs (expression));
}
public void VisitExpression_ValueRequired_LeavesExistingValue ()
{
var expression = CreateNewExpression ();
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.ValueRequired, _stageMock, _mappingResolutionContext);
var result = visitor.VisitExpression (expression);
Assert.That (result, Is.SameAs (expression));
}
public void VisitExpression_SingleValueRequired_ConvertsBool_ToSingleValue ()
{
var expression = new CustomExpression (typeof (bool));
var nullableExpression = new CustomExpression (typeof (bool?));
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.SingleValueRequired, _stageMock, _mappingResolutionContext);
var result = visitor.VisitExpression (expression);
var resultNullable = visitor.VisitExpression (nullableExpression);
var expected = new SqlConvertedBooleanExpression (GetNonNullablePredicateAsValueExpression (expression));
SqlExpressionTreeComparer.CheckAreEqualTrees (expected, result);
var expectedNullable = new SqlConvertedBooleanExpression (GetNullablePredicateAsValueExpression (nullableExpression));
SqlExpressionTreeComparer.CheckAreEqualTrees (expectedNullable, resultNullable);
}
public void VisitExpression_CallsNodeSpecificVisitMethods ()
{
var entityExpression = SqlStatementModelObjectMother.CreateSqlEntityDefinitionExpression (typeof (Cook));
var visitor = new TestableSqlContextExpressionVisitor (SqlExpressionContext.SingleValueRequired, _stageMock, _mappingResolutionContext);
Assert.That (() => visitor.VisitExpression (entityExpression), Throws.TypeOf<NotSupportedException>());
}