printk: Add tests for print format

Add tests to verify that the different print formats and constant
macros match.

Fixes #44199

Signed-off-by: Yuval Peress <peress@google.com>

tests/misc/print_format/CMakeLists.txt

@@ -0,0 +1,9 @@
+# Copyright (c) 2021 Google LLC
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(print_format)
+
+target_sources(app PRIVATE src/main.c)

tests/misc/print_format/prj.conf

@@ -0,0 +1 @@
+# Empty

tests/misc/print_format/src/main.c

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 Google LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr.h>
+
+void main(void)
+{
+	printk("d%" PRId8 "\n", INT8_C(8));
+	printk("d%" PRId16 "\n", INT16_C(16));
+	printk("d%" PRId32 "\n", INT32_C(32));
+	printk("d%" PRId64 "\n", INT64_C(64));
+
+	printk("i%" PRIi8 "\n", INT8_C(8));
+	printk("i%" PRIi16 "\n", INT16_C(16));
+	printk("i%" PRIi32 "\n", INT32_C(32));
+	printk("i%" PRIi64 "\n", INT64_C(64));
+
+	printk("o%" PRIo8 "\n", INT8_C(8));
+	printk("o%" PRIo16 "\n", INT16_C(16));
+	printk("o%" PRIo32 "\n", INT32_C(32));
+	printk("o%" PRIo64 "\n", INT64_C(64));
+
+	printk("u%" PRIu8 "\n", UINT8_C(8));
+	printk("u%" PRIu16 "\n", UINT16_C(16));
+	printk("u%" PRIu32 "\n", UINT32_C(32));
+	printk("u%" PRIu64 "\n", UINT64_C(64));
+
+	printk("x%" PRIx8 "\n", UINT8_C(8));
+	printk("x%" PRIx16 "\n", UINT16_C(16));
+	printk("x%" PRIx32 "\n", UINT32_C(32));
+	printk("x%" PRIx64 "\n", UINT64_C(64));
+
+	printk("X%" PRIX8 "\n", UINT8_C(8));
+	printk("X%" PRIX16 "\n", UINT16_C(16));
+	printk("X%" PRIX32 "\n", UINT32_C(32));
+	printk("X%" PRIX64 "\n", UINT64_C(64));
+}

tests/misc/print_format/testcase.yaml

@@ -0,0 +1,39 @@
+common:
+  harness: console
+  harness_config:
+    type: multi_line
+    ordered: true
+    regex:
+    - "d8"
+    - "d16"
+    - "d32"
+    - "d64"
+    - "i8"
+    - "i16"
+    - "i32"
+    - "i64"
+    - "o10"
+    - "o20"
+    - "o40"
+    - "o100"
+    - "u8"
+    - "u16"
+    - "u32"
+    - "u64"
+    - "x8"
+    - "x10"
+    - "x20"
+    - "x40"
+    - "X8"
+    - "X10"
+    - "X20"
+    - "X40"
+
+tests:
+  printk.format:
+    tags: clib
+  printk.format_newlib:
+    tags: clib newlib
+    filter: TOOLCHAIN_HAS_NEWLIB == 1
+    extra_configs:
+    - CONFIG_NEWLIB_LIBC=y