/*
 * Called by the Gradle CUnit launcher to register all CUnit tests.
 */

#include <stdio.h>
#include <CUnit/Automated.h>
#include <CUnit/Basic.h>
#include "gradle_cunit_register.h"

/*
 *  Generated launcher for CUnit tests. All tests and suites must be registered in a single method:
 *      void gradle_cunit_register();
 */
int main() {
    int failureCount;

    CU_initialize_registry();

    gradle_cunit_register();

    CU_list_tests_to_file();
    CU_automated_run_tests();

#include <CUnit/Basic.h>
#include "gradle_cunit_register.h"
#include "test_operators.h"

int suite_init(void) {
    return 0;
}

int suite_clean(void) {
    return 0;
}

void gradle_cunit_register() {
    CU_pSuite pSuiteMath = CU_add_suite("operator tests", suite_init, suite_clean);
    CU_add_test(pSuiteMath, "test_plus", test_plus);
    CU_add_test(pSuiteMath, "test_minus", test_minus);

    private File sourceDir;
    private File headerDir;

    @TaskAction
    public void generate() {
        writeToFile(sourceDir, "gradle_cunit_main.c");
        writeToFile(headerDir, "gradle_cunit_register.h");
    }

    private void writeToFile(File directory, String fileName) {
        final File file = new File(directory, fileName);
        GFileUtils.copyURLToFile(getClass().getResource(fileName), file);
    }

#include <CUnit/Basic.h>
#include "hello.h"
#include "gradle_cunit_register.h"

int init_test(void) {
    return 0;
}

int clean_test(void) {
    return 0;
}

void test_sum(void) {
  CU_ASSERT(sum(0, 2) == 2);
#ifndef ONE_TEST
  CU_ASSERT(sum(0, -2) == -2);
  CU_ASSERT(sum(2, 2) == 4);
#endif
}

void gradle_cunit_register() {

            "src/helloTest/c/test.c",
            "src/hello/c/hello.c",
            "src/hello/c/sum.c"
        ] as Set
        projectFile.headerFiles == [
            "build/src/helloTest/cunitLauncher/headers/gradle_cunit_register.h",
            "src/hello/headers/common.h",
            "src/hello/headers/hello.h"
        ]
        projectFile.projectConfigurations.keySet() == ['debug'] as Set

Gradle initialises the CUnit test registry and executes the tests, utilising some generated CUnit launcher sources. Gradle will expect and call a function with the signature `void gradle_cunit_register()` that you can use to configure the actual CUnit suites and tests to execute.

=== Example: Registering CUnit tests

[source.multi-language-sample,c]
.suite_operators.c
----