bsltf_simpletesttype

Detailed Description

Outline

• Purpose
• Classes
• Description
  • Attributes
  • Usage
    • Example 1: Printing the Supported Traits

Purpose

Provide a non-allocating test class without type traits.

Classes

• bsltf::SimpleTestType: non-allocating test class without type traits

See also

bsltf_templatetestfacility

Description

This component provides a single, unconstrained in-core (value-semantic) attribute class, SimpleTestType, that does not take an allocator nor define any type traits. SimpleTestType can be used during testing as the parameterized type of a class templates to ensure classes with the similar properties will function correctly. Note that this is particular valuable when testing a container template that supports different types of contained elements.

Attributes

Name                Type         Default
------------------  -----------  -------
data                int          0

• data: representation of the class value

Usage

This section illustrates intended use of this component.

Example 1: Printing the Supported Traits

Suppose we wanted to print the supported traits of this test type.

First, we create a function template printTypeTraits with a parameterized TYPE:

template <class TYPE>
void printTypeTraits()
    // Prints the traits of the parameterized 'TYPE' to the console.
{
    if (bslma::UsesBslmaAllocator<TYPE>::value) {
        printf("Type defines bslma::UsesBslmaAllocator.\n");
    }
    else {
        printf(
             "Type does not define bslma::UsesBslmaAllocator.\n");
    }
 
    if (bslmf::IsBitwiseMoveable<TYPE>::value) {
        printf("Type defines bslmf::IsBitwiseMoveable.\n");
    }
    else {
        printf("Type does not define bslmf::IsBitwiseMoveable.\n");
    }
}

Now, we invoke the printTypeTraits function template using SimpleTestType as the parameterized TYPE:

printTypeTraits<SimpleTestType>();

Finally, we observe the console output:

Type does not define bslma::UsesBslmaAllocator.
Type does not define bslmf::IsBitwiseMoveable.