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Diffstat (limited to 'test/xvfb-wrapper.c')
| -rw-r--r-- | test/xvfb-wrapper.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/test/xvfb-wrapper.c b/test/xvfb-wrapper.c new file mode 100644 index 0000000..d9fa0a7 --- /dev/null +++ b/test/xvfb-wrapper.c @@ -0,0 +1,128 @@ +/* + * Copyright © 2014 Ran Benita <ran234@gmail.com> + * Copyright © 2023 Pierre Le Marre <dev@wismill.eu> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include "config.h" + +#include <stdio.h> +#include <spawn.h> +#include <assert.h> +#include <signal.h> +#include <sys/types.h> +#include <sys/wait.h> + +#include "test.h" +#include "xvfb-wrapper.h" +#include "xkbcommon/xkbcommon-x11.h" + +int +xvfb_wrapper(int (*test_func)(char* display)) +{ + int ret = 0; + FILE * display_fd; + char display_fd_string[32]; + char *xvfb_argv[] = { + (char *) "Xvfb", (char *) "-displayfd", display_fd_string, NULL + }; + char *envp[] = { NULL }; + pid_t xvfb_pid = 0; + char display[32] = ":"; + size_t length; + + /* File descriptor to retrieve the display number */ + display_fd = tmpfile(); + if (display_fd == NULL){ + fprintf(stderr, "Unable to create temporary file.\n"); + goto err_display_fd; + } + snprintf(display_fd_string, sizeof(display_fd_string), "%d", fileno(display_fd)); + + /* + * Xvfb command: let the server find an available display. + * + * Note that it may generate multiple times the following output in stderr: + * _XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed + * It is expected: this is the server trying the ports until it finds one + * that works. + */ + ret = posix_spawnp(&xvfb_pid, "Xvfb", NULL, NULL, xvfb_argv, envp); + if (ret != 0) { + ret = SKIP_TEST; + goto err_xvfd; + } + + /* Wait for Xvfb fully waking up to accept a connection from a client. */ + sleep(1); + + /* Retrieve the display number: Xvfd writes the display number as a newline- + * terminated string; copy this number to form a proper display string. */ + rewind(display_fd); + length = fread(&display[1], 1, sizeof(display) - 1, display_fd); + if (length <= 0) { + ret = SKIP_TEST; + goto err_xvfd; + } else { + /* Drop the newline character */ + display[length] = '\0'; + } + + /* Run the function requiring a running X server */ + ret = test_func(display); + +err_xvfd: + if (xvfb_pid > 0) + kill(xvfb_pid, SIGTERM); + fclose(display_fd); +err_display_fd: + return ret; +} + +/* All X11_TEST functions are in the test_functions_section ELF section. + * __start and __stop point to the start and end of that section. See the + * __attribute__(section) documentation. + */ +extern const struct test_function __start_test_functions_section, __stop_test_functions_section; + +int +x11_tests_run() +{ + size_t count = 1; /* For NULL-terminated entry */ + + for (const struct test_function *t = &__start_test_functions_section; + t < &__stop_test_functions_section; + t++) + count++; + + int rc; + for (const struct test_function *t = &__start_test_functions_section; + t < &__stop_test_functions_section; + t++) { + fprintf(stderr, "Running test: %s from %s\n", t->name, t->file); + rc = xvfb_wrapper(t->func); + if (rc != 0) { + break; + } + } + + return rc; +} |