tests: Add special tests to test mp_printf function to improve coverage.
diff --git a/unix/coverage.c b/unix/coverage.c
index 757ebf1..eabd009 100644
--- a/unix/coverage.c
+++ b/unix/coverage.c
@@ -8,6 +8,21 @@
// function to run extra tests for things that can't be checked by scripts
STATIC mp_obj_t extra_coverage(void) {
+ // mp_printf (used by ports that don't have a native printf)
+ {
+ printf("# mp_printf\n");
+ mp_printf(&mp_plat_print, "%"); // nothing after percent
+ mp_printf(&mp_plat_print, "%d %+d % d\n", -123, 123, 123); // sign
+ mp_printf(&mp_plat_print, "%05d\n", -123); // negative number with zero padding
+ mp_printf(&mp_plat_print, "%ld\n", 123); // long
+ mp_printf(&mp_plat_print, "%X\n", 0x1abcdef); // capital hex
+ mp_printf(&mp_plat_print, "%.2s %.3s\n", "abc", "abc"); // fixed string precision
+ mp_printf(&mp_plat_print, "%.*s\n", -1, "abc"); // negative string precision
+ mp_printf(&mp_plat_print, "%b %b\n", 0, 1); // bools
+ mp_printf(&mp_plat_print, "%s\n", NULL); // null string
+ mp_printf(&mp_plat_print, "%t\n"); // non-format char
+ }
+
// vstr
{
printf("# vstr\n");