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Add unit tests for sSerialStopBitsToStr#14

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add-test-serial-stop-bits-to-str-7718948011588042311
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Add unit tests for sSerialStopBitsToStr#14
zknpr wants to merge 1 commit intosecurity-fixes-and-community-prsfrom
add-test-serial-stop-bits-to-str-7718948011588042311

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@zknpr zknpr commented Feb 7, 2026

This PR adds unit tests for sSerialStopBitsToStr in src/serial.c.

  • Created tests/test_serial.c with test cases for valid and invalid inputs.
  • Created tests/CMakeLists.txt to define the test executable.
  • Updated root CMakeLists.txt to enable testing and include the tests subdirectory.
  • Verified that tests pass with ctest.

PR created automatically by Jules for task 7718948011588042311 started by @zknpr

Added unit tests to verify the behavior of `sSerialStopBitsToStr` function,
covering all enum values and invalid input.
Enabled testing in CMakeLists.txt and added a `tests` directory.

Co-authored-by: zknpr <96851588+zknpr@users.noreply.github.com>
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Summary of Changes

Hello @zknpr, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing code quality and reliability by introducing a dedicated unit test suite for the sSerialStopBitsToStr function. The changes involve creating new test files and integrating them into the existing CMake build system, allowing for automated verification of the function's behavior.

Highlights

  • Unit Test Introduction: New unit tests have been added for the sSerialStopBitsToStr function, ensuring its correct behavior across various inputs.
  • Build System Integration: The build system (CMake) has been updated to enable testing and include the newly created test suite.
  • Test File Creation: Two new files, tests/test_serial.c and tests/CMakeLists.txt, were introduced to house the test cases and their build configuration, respectively.

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Changelog
  • CMakeLists.txt
    • Enabled CTest testing functionality.
    • Added the tests subdirectory to the build process.
  • tests/CMakeLists.txt
    • New file: Configures the test_serial executable, linking test_serial.c and serial.c.
    • Sets include directories and compile definitions.
    • Registers test_serial as a CTest.
  • tests/test_serial.c
    • New file: Implements test_sSerialStopBitsToStr function.
    • Contains assert-based tests for SERIAL_STOPBIT_ONE, SERIAL_STOPBIT_TWO, SERIAL_STOPBIT_ONEHALF, SERIAL_STOPBIT_UNKNOWN, and an invalid input, verifying the output of sSerialStopBitsToStr.
    • Includes a main function to run the tests.
Activity
  • The pull request was automatically created by Jules for a specific task, initiated by @zknpr.
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Code Review

This pull request adds unit tests for the sSerialStopBitsToStr function, which is a great addition for ensuring code quality. The changes to the CMake files correctly set up the testing infrastructure. The test cases in tests/test_serial.c cover the main scenarios, including valid and invalid inputs. I've suggested a refactoring of the test function to use a data-driven approach. This will reduce code duplication and make the tests more maintainable and easier to extend in the future.

Comment on lines +8 to +42
void test_sSerialStopBitsToStr() {
printf("Testing sSerialStopBitsToStr...\n");

// Test SERIAL_STOPBIT_ONE -> "1"
const char * result1 = sSerialStopBitsToStr(SERIAL_STOPBIT_ONE);
assert(result1 != NULL);
assert(strcmp(result1, "1") == 0);
printf("SERIAL_STOPBIT_ONE -> %s [PASS]\n", result1);

// Test SERIAL_STOPBIT_TWO -> "2"
const char * result2 = sSerialStopBitsToStr(SERIAL_STOPBIT_TWO);
assert(result2 != NULL);
assert(strcmp(result2, "2") == 0);
printf("SERIAL_STOPBIT_TWO -> %s [PASS]\n", result2);

// Test SERIAL_STOPBIT_ONEHALF -> "1.5"
const char * result3 = sSerialStopBitsToStr(SERIAL_STOPBIT_ONEHALF);
assert(result3 != NULL);
assert(strcmp(result3, "1.5") == 0);
printf("SERIAL_STOPBIT_ONEHALF -> %s [PASS]\n", result3);

// Test SERIAL_STOPBIT_UNKNOWN -> "Unknown"
const char * result4 = sSerialStopBitsToStr(SERIAL_STOPBIT_UNKNOWN);
assert(result4 != NULL);
assert(strcmp(result4, "Unknown") == 0);
printf("SERIAL_STOPBIT_UNKNOWN -> %s [PASS]\n", result4);

// Test Invalid Value -> "Unknown"
const char * result5 = sSerialStopBitsToStr((eSerialStopBits)999);
assert(result5 != NULL);
assert(strcmp(result5, "Unknown") == 0);
printf("Invalid (999) -> %s [PASS]\n", result5);

printf("All sSerialStopBitsToStr tests passed.\n");
}
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medium

The test function test_sSerialStopBitsToStr contains repetitive code for each test case. This can be improved by adopting a data-driven approach. By defining test cases in an array of structs and iterating through them, you can significantly reduce code duplication. This makes the test function cleaner, easier to read, and simpler to extend with new test cases in the future.

void test_sSerialStopBitsToStr() {
    printf("Testing sSerialStopBitsToStr...\n");

    struct test_case {
        const char* name;
        eSerialStopBits input;
        const char* expected;
    };

    struct test_case cases[] = {
        {"SERIAL_STOPBIT_ONE", SERIAL_STOPBIT_ONE, "1"},
        {"SERIAL_STOPBIT_TWO", SERIAL_STOPBIT_TWO, "2"},
        {"SERIAL_STOPBIT_ONEHALF", SERIAL_STOPBIT_ONEHALF, "1.5"},
        {"SERIAL_STOPBIT_UNKNOWN", SERIAL_STOPBIT_UNKNOWN, "Unknown"},
        {"Invalid (999)", (eSerialStopBits)999, "Unknown"},
    };

    int num_cases = sizeof(cases) / sizeof(cases[0]);
    for (int i = 0; i < num_cases; ++i) {
        const char* result = sSerialStopBitsToStr(cases[i].input);
        assert(result != NULL);
        assert(strcmp(result, cases[i].expected) == 0);
        printf("%s -> %s [PASS]\n", cases[i].name, result);
    }

    printf("All sSerialStopBitsToStr tests passed.\n");
}

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zknpr commented Feb 7, 2026

Tests merged into v1.5.3 as combined test suite. Thank you Jules!

@zknpr zknpr closed this Feb 7, 2026
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Tests merged into v1.5.3 as combined test suite. Thank you Jules!

You're welcome! I'm glad the tests were useful and successfully merged.

@zknpr zknpr deleted the add-test-serial-stop-bits-to-str-7718948011588042311 branch February 7, 2026 18:19
zknpr added a commit that referenced this pull request Feb 7, 2026
Add comprehensive test suite for serial port configuration functions:
- sSerialFlowToStr: flow control type conversion
- sSerialDataBitsToStr: data bits conversion
- sSerialStopBitsToStr: stop bits conversion
- sSerialParityToStr: parity conversion

Test infrastructure:
- tests/test_serial.c: All serial function tests
- tests/CMakeLists.txt: CTest integration
- BUILD_TESTING option in main CMakeLists.txt

Based on Jules AI contributions from PRs #10, #11, #14, #15
Reviewed by: Gemini Code Assist

Co-Authored-By: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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