Incorrect use of test setup/teardown API

Test setup invoked in test suite configuration, suite setup invoked in test configuration, and so on

Since R2023b

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Description

This defect occurs when you invoke setup and teardown macros from the Polyspace® Test™ xUnit API in the incorrect configuration. For instance:

  • You invoke suite-level macros such as PST_SUITE_SETUP or PST_SUITE_TEST_SETUP in the test configuration macro PST_TEST_CONFIG (instead of the suite configuration macro PST_SUITE_CONFIG).

  • You invoke test-level macros such as PST_SETUP in the suite configuration macro PST_SUITE_CONFIG (instead of the test configuration macro PST_TEST_CONFIG).

Similar considerations apply to teardown macros PST_SUITE_TEARDOWN, PST_SUITE_TEST_TEARDOWN and PST_TEARDOWN.

This checker is enabled if you specify the value pstunit for the option Libraries used (-library) or find defects in a test file from the Polyspace Platform (Polyspace Test) user interface. For more information, see Check for Bugs and Run-Time Errors in C/C++ Tests and Functions Under Test (Polyspace Test).

Risk

When you run tests, setup and teardown macros invoked in the incorrect configuration get ignored. As a result, your tests are not set up correctly.

Fix

Invoke test setup and teardown macros in the correct configuration.

Setup and Teardown MacroConfiguration

  • PST_SUITE_SETUP

  • PST_SUITE_TEARDOWN

  • PST_SUITE_TEST_SETUP

  • PST_SUITE_TEST_TEARDOWN

PST_SUITE_CONFIG

  • PST_SETUP

  • PST_TEARDOWN

PST_TEST_CONFIG

Examples

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In this example, the suite-level macros PST_SUITE_TEST_SETUP and PST_SUITE_TEST_TEARDOWN are incorrectly invoked in the test configuration PST_TEST_CONFIG. These macros specify setup and teardown functions that must be run before and after every test in a suite and therefore must be part of the suite configuration.

  • Header with type definitions (named example.h):

    #include <limits.h>
extern unsigned gSum;

typedef enum {
    NOT_SATURATED = 0,
    SATURATED = 1
} SUM_STATUS;

SUM_STATUS globalSum(unsigned x);

  • Source:

    #include "example.h"

unsigned gSum;

SUM_STATUS globalSum(unsigned x) {
    if (x > UINT_MAX - gSum) {
        gSum = UINT_MAX;
        return SATURATED;
    }
    gSum += x;
    return NOT_SATURATED;
}

  • Tests:

    #include "pstunit.h"
#include "example.h"

//Test utilities
void setgSum (void) {
    gSum = 0;
}

void resetgSum (void) {
    gSum = 0;
}


PST_SUITE_CONFIG(gSumTests) {}

PST_TEST_CONFIG(gSumTests, TestCaseOne){
    PST_SUITE_TEST_SETUP(setgSum);
    PST_SUITE_TEST_TEARDOWN(resetgSum);
}
PST_TEST_BODY(gSumTests, TestCaseOne) {
    unsigned test_data = UINT_MAX/2 + 1;
    unsigned expected_gSum = UINT_MAX/2 + 1;
    int  i;
    
     for(i = 1; i<= 1; i++)    
            globalSum(test_data);
    
    PST_VERIFY_EQ_INT_MSG(gSum, expected_gSum, "Issue in nonsaturating sum.");
      
}

PST_REGFCN(myRegFcn) {
    PST_ADD_TEST(gSumTests, TestCaseOne);
}

#ifndef PSTEST_BUILD
int main(int argc, char *argv[]) {
    PST_REGFCN_CALL(myRegFcn);
    return PST_MAIN(argc, argv);
}
#endif
Correction — Place Suite-test Setup and Teardown in Suite Configuration

Place invocations to macros PST_SUITE_TEST_SETUP and PST_SUITE_TEST_TEARDOWN in a suite configuration PST_SUITE_CONFIG. The corrected test file is shown below.

  • Header with type definitions (named example.h):

    #include <limits.h>
extern unsigned gSum;

typedef enum {
    NOT_SATURATED = 0,
    SATURATED = 1
} SUM_STATUS;

SUM_STATUS globalSum(unsigned x);

  • Source:

    #include "example.h"

unsigned gSum;

SUM_STATUS globalSum(unsigned x) {
    if (x > UINT_MAX - gSum) {
        gSum = UINT_MAX;
        return SATURATED;
    }
    gSum += x;
    return NOT_SATURATED;
}

  • Tests:

    #include "pstunit.h"
#include "example.h"

//Test utilities
void setgSum (void) {
    gSum = 0;
}

void resetgSum (void) {
    gSum = 0;
}


PST_SUITE_CONFIG(gSumTests) {
    PST_SUITE_TEST_SETUP(setgSum);
    PST_SUITE_TEST_TEARDOWN(resetgSum);
}

PST_TEST_CONFIG(gSumTests, TestCaseOne){}
PST_TEST_BODY(gSumTests, TestCaseOne) {
    unsigned test_data = UINT_MAX/2 + 1;
    unsigned expected_gSum = UINT_MAX/2 + 1;
    int  i;
    
     for(i = 1; i<= 1; i++)    
            globalSum(test_data);
    
    PST_VERIFY_EQ_INT_MSG(gSum, expected_gSum, "Issue in nonsaturating sum.");
      
}

PST_REGFCN(myRegFcn) {
    PST_ADD_TEST(gSumTests, TestCaseOne);
}

#ifndef PSTEST_BUILD
int main(int argc, char *argv[]) {
    PST_REGFCN_CALL(myRegFcn);
    return PST_MAIN(argc, argv);
}
#endif

Result Information

Group: Libraries Misuse
Language: C | C++
Default: Off
Command-Line Syntax: PSTUNIT_MISUSE_SETUP_TEARDOWN
Impact: Medium

Version History

Introduced in R2023b

See Also

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