core: rework logging

Make it more flexible, add logging to a file, and absolute and
relative timestamps.

src/tests/test-modem-helpers.c

@@ -17,6 +17,7 @@
 #include <string.h>
 
 #include "mm-modem-helpers.h"
+#include "mm-log.h"
 
 typedef struct {
     GPtrArray *solicited_creg;
@@ -1079,8 +1080,7 @@ test_devid_item (void *f, gpointer d)
                                          item->gsn,
                                          item->revision,
                                          item->model,
-                                         item->manf,
-                                         FALSE);
+                                         item->manf);
     g_assert (devid);
     if (strcmp (devid, item->devid))
         g_message ("%s", devid);
@@ -1178,6 +1178,15 @@ test_data_free (TestData *data)
     g_free (data);
 }
 
+void
+_mm_log (const char *loc,
+         const char *func,
+         guint32 level,
+         const char *fmt,
+         ...)
+{
+    /* Dummy log function */
+}
 
 #if GLIB_CHECK_VERSION(2,25,12)
 typedef GTestFixtureFunc TCFunc;

src/tests/test-qcdm-serial-port.c

@@ -31,6 +31,7 @@
 #include "libqcdm/src/commands.h"
 #include "libqcdm/src/utils.h"
 #include "libqcdm/src/com.h"
+#include "mm-log.h"
 
 typedef struct {
     int master;
@@ -449,10 +450,14 @@ typedef void (*TCFunc)(void);
 #define TESTCASE(t, d) g_test_create_case (#t, 0, d, NULL, (TCFunc) t, NULL)
 #define TESTCASE_PTY(t, d) g_test_create_case (#t, sizeof (*d), d, (TCFunc) test_pty_create, (TCFunc) t, (TCFunc) test_pty_cleanup)
 
-gboolean mm_options_debug (void);
-gboolean mm_options_debug (void)
+void
+_mm_log (const char *loc,
+         const char *func,
+         guint32 level,
+         const char *fmt,
+         ...)
 {
-    return g_test_verbose ();
+    /* Dummy log function */
 }
 
 int main (int argc, char **argv)