tests: Add tests for alsa-mixer paths

It checks all files in the mixer/paths directory and checks
 - that the file can be parsed without errors
 - that the file is actually shipped in the makefile

Signed-off-by: David Henningsson <david.henningsson@canonical.com>

src/Makefile.am

@@ -297,6 +297,8 @@ endif
 if HAVE_ALSA
 TESTS_norun += \
 		alsa-time-test
+TESTS_default += \
+		alsa-mixer-path-test
 endif
 
 if HAVE_TESTS
@@ -545,6 +547,11 @@ alsa_time_test_LDADD = $(AM_LDADD) $(ASOUNDLIB_LIBS)
 alsa_time_test_CFLAGS = $(AM_CFLAGS) $(ASOUNDLIB_CFLAGS)
 alsa_time_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS)
 
+alsa_mixer_path_test_SOURCES = tests/alsa-mixer-path-test.c
+alsa_mixer_path_test_CFLAGS = $(AM_CFLAGS) $(LIBCHECK_CFLAGS) $(ASOUNDLIB_CFLAGS)
+alsa_mixer_path_test_LDADD = $(AM_LDADD) libpulsecore-@PA_MAJORMINOR@.la libpulse.la libpulsecommon-@PA_MAJORMINOR@.la libalsa-util.la
+alsa_mixer_path_test_LDFLAGS = $(AM_LDFLAGS) $(BINLDFLAGS) $(LIBCHECK_LIBS)
+
 usergroup_test_SOURCES = tests/usergroup-test.c
 usergroup_test_LDADD = $(AM_LDADD) libpulsecore-@PA_MAJORMINOR@.la libpulse.la libpulsecommon-@PA_MAJORMINOR@.la
 usergroup_test_CFLAGS = $(AM_CFLAGS) $(LIBCHECK_CFLAGS)

src/tests/alsa-mixer-path-test.c

@@ -0,0 +1,111 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <check.h>
+#include <dirent.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+#include <pulse/pulseaudio.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/strlist.h>
+#include <modules/alsa/alsa-mixer.h>
+
+/* This function was copied from alsa-mixer.c */
+static const char *get_default_paths_dir(void) {
+    if (pa_run_from_build_tree())
+        return PA_BUILDDIR "/modules/alsa/mixer/paths/";
+    else
+        return PA_ALSA_PATHS_DIR;
+}
+
+static pa_strlist *load_makefile() {
+    FILE *f;
+    bool lookforfiles = false;
+    char buf[2048];
+    pa_strlist *result = NULL;
+    const char *Makefile = PA_BUILDDIR "/Makefile";
+
+    f = pa_fopen_cloexec(Makefile, "r");
+    fail_unless(f != NULL); /* Consider skipping this test instead of failing if Makefile not found? */
+    while (!feof(f)) {
+        if (!fgets(buf, sizeof(buf), f)) {
+            fail_unless(feof(f));
+            break;
+        }
+        if (strstr(buf, "dist_alsapaths_DATA = \\") != NULL) {
+           lookforfiles = true;
+           continue;
+        }
+        if (!lookforfiles)
+           continue;
+        if (!strstr(buf, "\\"))
+           lookforfiles = false;
+        else
+           strstr(buf, "\\")[0] = '\0';
+        pa_strip(buf);
+        pa_log_debug("Shipping file '%s'", pa_path_get_filename(buf));
+        result = pa_strlist_prepend(result, pa_path_get_filename(buf));
+    }
+    fclose(f);
+    return result;
+}
+
+
+START_TEST (mixer_path_test) {
+    DIR *dir;
+    struct dirent *ent;
+    pa_strlist *ship = load_makefile();
+    const char *pathsdir = get_default_paths_dir();
+    pa_log_debug("Analyzing directory: '%s'", pathsdir);
+
+    dir = opendir(pathsdir);
+    fail_unless(dir != NULL);
+    while ((ent = readdir(dir)) != NULL) {
+        pa_alsa_path *path;
+        if (pa_streq(ent->d_name, ".") || pa_streq(ent->d_name, ".."))
+            continue;
+        pa_log_debug("Analyzing file: '%s'", ent->d_name);
+
+        /* Can the file be parsed? */
+        path = pa_alsa_path_new(pathsdir, ent->d_name, PA_ALSA_DIRECTION_ANY);
+        fail_unless(path != NULL);
+
+        /* Is the file shipped? */
+        if (ship) {
+            pa_strlist *n;
+            bool found = false;
+            for (n = ship; n; n = pa_strlist_next(n))
+                found |= pa_streq(ent->d_name, pa_strlist_data(n));
+            fail_unless(found);
+        }
+    }
+    closedir(dir);
+    pa_strlist_free(ship);
+}
+END_TEST
+
+int main(int argc, char *argv[]) {
+    int failed = 0;
+    Suite *s;
+    TCase *tc;
+    SRunner *sr;
+
+    if (!getenv("MAKE_CHECK"))
+        pa_log_set_level(PA_LOG_DEBUG);
+
+    s = suite_create("Alsa-mixer-path");
+    tc = tcase_create("alsa-mixer-path");
+    tcase_add_test(tc, mixer_path_test);
+    tcase_set_timeout(tc, 30);
+    suite_add_tcase(s, tc);
+
+    sr = srunner_create(s);
+    srunner_run_all(sr, CK_NORMAL);
+    failed = srunner_ntests_failed(sr);
+    srunner_free(sr);
+
+    return (failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
+}