public void valid_equals_comparison_using_strings()
{
// "abc" = "abc"
var target = new LogicalBinaryOperationExpression
{
Left = new StringLiteralExpression("abc"),
Right = new StringLiteralExpression("abc"),
Operator = TigerOperator.Equal
};
AstHelper helper = Mother.CreateRuntime();
var result = target.Compile(helper).Eval <bool>();
Assert.IsTrue(result);
}
public void compare_integer_with_string()
{
// "abc" = "abc"
var target = new LogicalBinaryOperationExpression
{
Left = new IntLiteralExpression(1),
Right = new StringLiteralExpression("abc"),
Operator = TigerOperator.Equal
};
AstHelper helper = Mother.CreateRuntime();
var result = target.Compile(helper).Eval <bool>();
Assert.IsFalse(result);
}
public void nil_equals_integer()
{
// nil = 1
var target = new LogicalBinaryOperationExpression
{
Left = new NullLiteralExpression(),
Right = new IntLiteralExpression(1),
Operator = TigerOperator.Equal
};
AstHelper helper = Mother.CreateRuntime();
var result = target.Compile(helper).Eval <bool>();
Assert.IsFalse(result);
}
public void nil_and_also_integer()
{
// nil && 1
var target = new LogicalBinaryOperationExpression
{
Left = new ToBooleanExpression(new NullLiteralExpression()),
Right = new ToBooleanExpression(new IntLiteralExpression(1)),
Operator = TigerOperator.AndAlso
};
AstHelper helper = Mother.CreateRuntime();
var result = target.Compile(helper).Eval <bool>();
Assert.IsFalse(result);
}
public void integer_or_else_nil()
{
// 1 || nil
var target = new LogicalBinaryOperationExpression
{
Left = new ToBooleanExpression(new IntLiteralExpression(1)),
Right = new ToBooleanExpression(new NullLiteralExpression()),
Operator = TigerOperator.OrElse
};
AstHelper helper = Mother.CreateRuntime();
var result = target.Compile(helper).Eval <bool>();
Assert.IsTrue(result);
}
public void logical_binary_comparation_nil_with_string()
{
// nil=(nil="pepe")
var target = new LogicalBinaryOperationExpression
{
Left = new NullLiteralExpression(),
Right = new LogicalBinaryOperationExpression
{
Left = new NullLiteralExpression(),
Right = new StringLiteralExpression("pepe"),
Operator = TigerOperator.Equal
},
Operator = TigerOperator.Equal
};
AstHelper helper = Mother.CreateRuntime();
var result = target.Compile(helper).Eval <bool>();
Assert.IsFalse(result);
}
public void nil_equals_nil()
{
// nil = nil
var target = new LogicalBinaryOperationExpression
{
Left = new NullLiteralExpression(),
Right = new NullLiteralExpression(),
Operator = TigerOperator.Equal
};
AstHelper helper = Mother.CreateRuntime();
try
{
target.Compile(helper);
}
catch (SemanticException e)
{
var error = e.Errors.First() as CanNotInferTypeError;
Assert.IsNotNull(error);
Assert.Pass();
}
Assert.Fail();
}