diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c
index 63d4a21955f0..6640a82ad44b 100644
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -226,7 +226,8 @@ static const unsigned long exp[] __initconst = {
 	BITMAP_FROM_U64(0xffffffff),
 	BITMAP_FROM_U64(0xfffffffe),
 	BITMAP_FROM_U64(0x3333333311111111ULL),
-	BITMAP_FROM_U64(0xffffffff77777777ULL)
+	BITMAP_FROM_U64(0xffffffff77777777ULL),
+	BITMAP_FROM_U64(0),
 };
 
 static const unsigned long exp2[] __initconst = {
@@ -249,19 +250,34 @@ static const struct test_bitmap_parselist parselist_tests[] __initconst = {
 	{0, "1-31:4/4",			&exp[9 * step], 32, 0},
 	{0, "0-31:1/4,32-63:2/4",	&exp[10 * step], 64, 0},
 	{0, "0-31:3/4,32-63:4/4",	&exp[11 * step], 64, 0},
+	{0, "  ,,  0-31:3/4  ,, 32-63:4/4  ,,  ",	&exp[11 * step], 64, 0},
 
 	{0, "0-31:1/4,32-63:2/4,64-95:3/4,96-127:4/4",	exp2, 128, 0},
 
 	{0, "0-2047:128/256", NULL, 2048, PARSE_TIME},
 
+	{0, "",				&exp[12 * step], 8, 0},
+	{0, "\n",			&exp[12 * step], 8, 0},
+	{0, ",,  ,,  , ,  ,",		&exp[12 * step], 8, 0},
+	{0, " ,  ,,  , ,   ",		&exp[12 * step], 8, 0},
+	{0, " ,  ,,  , ,   \n",		&exp[12 * step], 8, 0},
+
 	{-EINVAL, "-1",	NULL, 8, 0},
 	{-EINVAL, "-0",	NULL, 8, 0},
 	{-EINVAL, "10-1", NULL, 8, 0},
 	{-EINVAL, "0-31:", NULL, 8, 0},
 	{-EINVAL, "0-31:0", NULL, 8, 0},
+	{-EINVAL, "0-31:0/", NULL, 8, 0},
 	{-EINVAL, "0-31:0/0", NULL, 8, 0},
 	{-EINVAL, "0-31:1/0", NULL, 8, 0},
 	{-EINVAL, "0-31:10/1", NULL, 8, 0},
+	{-EOVERFLOW, "0-98765432123456789:10/1", NULL, 8, 0},
+
+	{-EINVAL, "a-31", NULL, 8, 0},
+	{-EINVAL, "0-a1", NULL, 8, 0},
+	{-EINVAL, "a-31:10/1", NULL, 8, 0},
+	{-EINVAL, "0-31:a/1", NULL, 8, 0},
+	{-EINVAL, "0-\n", NULL, 8, 0},
 };
 
 static void __init test_bitmap_parselist(void)