TEST_VARIABLE
snprintf(buf, sizeof(buf), "%s=1", TEST_VARIABLE);
ATF_CHECK(getenv(TEST_VARIABLE) == NULL);
ATF_CHECK(strcmp(getenv(TEST_VARIABLE), "1") == 0);
ATF_CHECK(getenv(TEST_VARIABLE) == NULL);
snprintf(name, sizeof(name), "%s_%d", TEST_VARIABLE, i);
snprintf(name, sizeof(name), "%s_%d", TEST_VARIABLE, i);
ATF_CHECK(setenv(TEST_VARIABLE, "true", 0) != -1);
ATF_CHECK_STREQ(getenv(TEST_VARIABLE), "true");
ATF_CHECK(getenv(TEST_VARIABLE) == NULL);