public void Null_Test()
{
Expression <Func <Entity, bool> > expression = x => x.Flag == null;
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(0);
statement.Text.ShouldEqual("([flag] IS NULL)");
}
public void should_generate_sql_for_ends_with_equals_false()
{
Expression <Func <Entity, bool> > expression = x => x.Name.EndsWith("ed") == false;
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual("ed");
statement.Text.ShouldEqual(string.Format("([name] NOT LIKE '%' + @{0})", statement.Parameters.First().Key));
}
public void Or_Test()
{
Expression <Func <Entity, bool> > expression = x => x.Age == 10 || x.Flag != null;
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual(10);
statement.Text.ShouldEqual($"(([age] = @{statement.Parameters.First().Key}) OR ([flag] IS NOT NULL))");
}
public void should_generate_sql_for_trim()
{
Expression <Func <Entity, bool> > expression = x => x.Name.Trim() == "ed";
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual("ed");
statement.Text.ShouldEqual(string.Format("(LTRIM(RTRIM([name])) = @{0})", statement.Parameters.First().Key));
}
public void Less_Than_Or_Equal_Test()
{
Expression <Func <Entity, bool> > expression = x => x.Age <= 33;
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual(33);
statement.Text.ShouldEqual(string.Format("([age] <= @{0})", statement.Parameters.First().Key));
}
public void should_generate_sql_for_not_contains()
{
Expression <Func <Entity, bool> > expression = x => !x.Name.Contains("ed");
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual("ed");
statement.Text.ShouldEqual(string.Format("([name] NOT LIKE '%' + @{0} + '%')", statement.Parameters.First().Key));
}
public void Unary_True_Test()
{
Expression <Func <Entity, bool> > expression = x => x.Active;
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual(true);
statement.Text.ShouldEqual(string.Format("([active] = @{0})", statement.Parameters.First().Key));
}
public void Equals_Boolean_Expression_Test()
{
Expression <Func <Entity, bool> > expression = x => x.Active == (x.Age == 33);
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual(33);
statement.Text.ShouldEqual(string.Format("([active] = CASE WHEN ([age] = @{0}) THEN 1 ELSE 0 END)", statement.Parameters.First().Key));
}
public void should_not_cast_dynamic_value()
{
var optout = (object)true;
Expression <Func <Entity, bool> > expression = x => x.Values["optout"] == optout;
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(1);
statement.Parameters.First().Value.ShouldEqual(true);
statement.Text.ShouldEqual(string.Format("([optout] = @{0})", statement.Parameters.First().Key));
}
public void Modulo_Test()
{
Expression <Func <Entity, bool> > expression = x => x.Age % 20 == 55;
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(2);
statement.Parameters.First().Value.ShouldEqual(20);
statement.Parameters.Skip(1).First().Value.ShouldEqual(55);
statement.Text.ShouldEqual(string.Format("(([age] % @{0}) = @{1})", statement.Parameters.First().Key, statement.Parameters.Skip(1).First().Key));
}
public void Not_Bool_Test()
{
Expression <Func <Entity, bool> > expression = x => !x.Active && !(bool)x.Values["optout"];
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(2);
statement.Parameters.First().Value.ShouldEqual(false);
statement.Parameters.Skip(1).First().Value.ShouldEqual(false);
statement.Text.ShouldEqual(string.Format("(([active] = @{0}) AND (CAST([optout] AS bit) = @{1}))",
statement.Parameters.First().Key,
statement.Parameters.Skip(1).First().Key));
}
public void Not_Expression_Test()
{
Expression <Func <Entity, bool> > expression = x => !(x.Age == 33);
var statement = WhereWriter <Entity> .CreateStatement(WhereVisitor <Entity> .CreateModel(expression.Body), Map);
statement.Parameters.Count().ShouldEqual(2);
statement.Parameters.First().Value.ShouldEqual(33);
statement.Parameters.Skip(1).First().Value.ShouldEqual(false);
statement.Text.ShouldEqual(string.Format("(CASE WHEN ([age] = @{0}) THEN 1 ELSE 0 END = @{1})",
statement.Parameters.First().Key,
statement.Parameters.Skip(1).First().Key));
}
