diff --git a/tests/lib/cbprintf_package/prj.conf b/tests/lib/cbprintf_package/prj.conf
index 6dc80c0d7b7..9467c292689 100644
--- a/tests/lib/cbprintf_package/prj.conf
+++ b/tests/lib/cbprintf_package/prj.conf
@@ -1,2 +1 @@
 CONFIG_ZTEST=y
-CONFIG_CBPRINTF_COMPLETE=y
diff --git a/tests/lib/cbprintf_package/src/main.c b/tests/lib/cbprintf_package/src/main.c
index aedd482a5bd..7af886b3fe4 100644
--- a/tests/lib/cbprintf_package/src/main.c
+++ b/tests/lib/cbprintf_package/src/main.c
@@ -27,7 +27,8 @@ static int out(int c, void *dest)
 	return rv;
 }
 
-static char runtime_buf[128];
+static char static_buf[512];
+static char runtime_buf[512];
 static char compare_buf[128];
 
 void dump(const char *desc, uint8_t *package, size_t len)
@@ -58,13 +59,23 @@ void unpack(const char *desc, struct out_buffer *buf,
 	}; \
 	int rc = cbprintf_package(NULL, 0, fmt, __VA_ARGS__); \
 	zassert_true(rc > 0, "cbprintf_package() returned %d", rc); \
-	size_t len = rc; \
-	uint8_t __aligned(8) rt_package[len]; \
+	int len = rc; \
+	/* Aligned so the package is similar to the static one. */ \
+	uint8_t __aligned(CBPRINTF_PACKAGE_ALIGNMENT) rt_package[len]; \
 	memset(rt_package, 0, len); \
 	rc = cbprintf_package(rt_package, len, fmt, __VA_ARGS__); \
 	zassert_equal(rc, len, "cbprintf_package() returned %d, expected %d", rc, len); \
 	dump("runtime", rt_package, len); \
 	unpack("runtime", &rt_buf, rt_package, len); \
+	\
+	struct out_buffer st_buf = { \
+		.buf = static_buf, .idx = 0, .size = sizeof(static_buf) \
+	}; \
+	CBPRINTF_STATIC_PACKAGE(NULL, 0, len, fmt, __VA_ARGS__); \
+	uint8_t __aligned(CBPRINTF_PACKAGE_ALIGNMENT) package[len]; \
+	CBPRINTF_STATIC_PACKAGE(package, len, len, fmt, __VA_ARGS__); \
+	dump("static", package, len); \
+	unpack("static", &st_buf, package, len); \
 } while (0)
 
 void test_cbprintf_package(void)
@@ -97,6 +108,11 @@ void test_cbprintf_package(void)
 	TEST_PACKAGING("test %c %p", c, &c);
 	if (IS_ENABLED(CONFIG_CBPRINTF_FP_SUPPORT)) {
 		TEST_PACKAGING("test %f %a", f, d);
+#if CONFIG_CBPRINTF_PACKAGE_LONGDOUBLE
+			long double ld = 1.2333;
+
+			TEST_PACKAGING("test %Lf", ld);
+#endif
 	}
 }
 
diff --git a/tests/lib/cbprintf_package/testcase.yaml b/tests/lib/cbprintf_package/testcase.yaml
index e8ee855d366..c6733a15a6f 100644
--- a/tests/lib/cbprintf_package/testcase.yaml
+++ b/tests/lib/cbprintf_package/testcase.yaml
@@ -7,6 +7,9 @@ tests:
       qemu_arc_em qemu_arc_hs qemu_cortex_a53 qemu_cortex_m0 qemu_cortex_m3
       qemu_cortex_r5 qemu_leon3 qemu_nios2 qemu_riscv32 qemu_riscv64 qemu_x86
       qemu_x86_64 qemu_xtensa
+    extra_configs:
+      - CONFIG_CBPRINTF_COMPLETE=y
+
   libraries.cbprintf_package_fp:
     tags: cbprintf
     integration_platforms:
@@ -17,3 +20,29 @@ tests:
       qemu_x86_64 qemu_xtensa
     extra_configs:
       - CONFIG_CBPRINTF_FP_SUPPORT=y
+      - CONFIG_CBPRINTF_COMPLETE=y
+
+  libraries.cbprintf_package_long_double:
+    tags: cbprintf
+    integration_platforms:
+      - native_posix
+    platform_allow: >
+      qemu_arc_em qemu_arc_hs qemu_cortex_a53 qemu_cortex_m0 qemu_cortex_m3
+      qemu_cortex_r5 qemu_leon3 qemu_nios2 qemu_riscv64
+      qemu_x86_64 qemu_xtensa
+    platform_exclude: qemu_riscv32
+    extra_configs:
+      - CONFIG_CBPRINTF_FP_SUPPORT=y
+      - CONFIG_CBPRINTF_COMPLETE=y
+      - CONFIG_CBPRINTF_PACKAGE_LONGDOUBLE=y
+
+  libraries.cbprintf_package_nano:
+    tags: cbprintf
+    integration_platforms:
+      - native_posix
+    platform_allow: >
+      qemu_arc_em qemu_arc_hs qemu_cortex_a53 qemu_cortex_m0 qemu_cortex_m3
+      qemu_cortex_r5 qemu_leon3 qemu_nios2 qemu_riscv32 qemu_riscv64 qemu_x86
+      qemu_x86_64 qemu_xtensa
+    extra_configs:
+      - CONFIG_CBPRINTF_NANO=y