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Lesson 1 – Test Method Structure

409

1-4 Programming Style of Test Method

API

There are two styles in the test method APIs. One is C function

style, and another is C++ class style. The difference between the

two is a style of writing as follows:

C Function Style

This style test method API is provided as C function so that the

function has the programming style similar to a generic C

function.

EXECUTE_TEST(timeout, &timeout_flag);

DSP_FFT(source_arrary, result_array, window);

TEST(pin, testname, value);

C++ Class Style

To change any conditions for a specified hardware resource, or to

retrieve measurement data from a specified hardware resource,

test method APIs have this programming style.

NOTE The C++ class style APIs are used mainly to change hardware settings

and retrieve measurement result. Hence, the C function style APIs are

used in almost portions of your test method program.

This style API has the following characteristics.

•The Setup APIs and Result APIs are mainly in the typical C++

class style.

•An API is constructed by a data container specifier and

function(s) such below:

•A data container specifier points to a data container that has a

variety of data or a sub-container in a data container.

•A data container is called an object in the C++ world.

And a specifier is an object name.

•A function can access to data in the specified container.

Primary.level(3);

FunctionSpecifier

Analog.AWG("Ain").vOffset(0.5 V);

FunctionSpecifier

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