tests: Add tests for bindesc reading

Added tests for bindesc reading, to test reading on multiple C/C++
standards. Only RAM and flash backends are tested, as the flash
simulator can't simulate a memory mapped flash.

Signed-off-by: Yonatan Schachter <yonatan.schachter@gmail.com>

tests/subsys/bindesc/reading/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright 2023 Yonatan Schachter
+#
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(bindesc)
+
+target_sources(app PRIVATE src/main.c)

tests/subsys/bindesc/reading/prj.conf

@@ -0,0 +1,11 @@
+# Copyright 2023 Yonatan Schachter
+#
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_ZTEST=y
+CONFIG_FLASH=y
+
+CONFIG_BINDESC=y
+CONFIG_BINDESC_READ=y
+CONFIG_BINDESC_READ_FLASH=y
+CONFIG_BINDESC_READ_RAM=y

tests/subsys/bindesc/reading/src/main.c

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+/*
+ * Copyright 2023 Yonatan Schachter
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/ztest.h>
+#include <zephyr/bindesc.h>
+#include <zephyr/drivers/flash.h>
+
+#ifdef CONFIG_ARCH_POSIX
+#define SOC_NV_FLASH_NODE DT_CHILD(DT_INST(0, zephyr_sim_flash), flash_0)
+#else
+#define SOC_NV_FLASH_NODE DT_CHILD(DT_INST(0, zephyr_sim_flash), flash_sim_0)
+#endif /* CONFIG_ARCH_POSIX */
+
+#if (defined(CONFIG_ARCH_POSIX) || defined(CONFIG_BOARD_QEMU_X86))
+static const struct device *const flash_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_flash_controller));
+#else
+static const struct device *const flash_dev = DEVICE_DT_GET(DT_NODELABEL(sim_flash_controller));
+#endif
+
+#define FLASH_SIMULATOR_ERASE_UNIT DT_PROP(SOC_NV_FLASH_NODE, erase_block_size)
+
+static __aligned(BINDESC_ALIGNMENT) const uint8_t descriptors[] = {
+	0x46, 0x60, 0xa4, 0x7e, 0x5a, 0x3e, 0x86, 0xb9, /* magic */
+	0x00, 0x18, 0x06, 0x00, /* tag: 0x1800 (app version string), length: 0x0006 */
+	0x31, 0x2e, 0x30, 0x2e, 0x30, 0x00, /* "1.0.0" */
+	0x00, 0x00, /* padding */
+	0x01, 0x1b, 0x04, 0x00, /* tag: 0x1b01 (compiler name), length: 0x0004 */
+	0x47, 0x4e, 0x55, 0x00, /* "GNU" */
+	0x02, 0x1b, 0x07, 0x00, /* tag: 0x1b02 (compiler version), length: 0x0007 */
+	0x31, 0x32, 0x2e, 0x32, 0x2e, 0x30, 0x00, /* "12.2.0" */
+	0x00, /* padding */
+	0x00, 0x19, 0x07, 0x00, /* tag: 0x1900 (kernel version string), length: 0x0007 */
+	0x33, 0x2e, 0x35, 0x2e, 0x39, 0x39, 0x00, /* "3.5.99" */
+	0x00, /* padding */
+	0xff, 0xff, 0x00, 0x00, /* tag: 0xffff (descriptors end), length: 0x0000 */
+};
+
+static void *test_setup(void)
+{
+	flash_erase(flash_dev, 0, FLASH_SIMULATOR_ERASE_UNIT);
+	flash_write(flash_dev, 0, descriptors, sizeof(descriptors));
+
+	return NULL;
+}
+
+static void test_bindesc_read(struct bindesc_handle *handle)
+{
+	const char *result;
+
+	bindesc_find_str(handle, BINDESC_ID_KERNEL_VERSION_STRING, &result);
+	zassert_mem_equal("3.5.99", result, sizeof("3.5.99"));
+
+	bindesc_find_str(handle, BINDESC_ID_APP_VERSION_STRING, &result);
+	zassert_mem_equal("1.0.0", result, sizeof("1.0.0"));
+
+	bindesc_find_str(handle, BINDESC_ID_C_COMPILER_NAME, &result);
+	zassert_mem_equal("GNU", result, sizeof("GNU"));
+
+	bindesc_find_str(handle, BINDESC_ID_C_COMPILER_VERSION, &result);
+	zassert_mem_equal("12.2.0", result, sizeof("12.2.0"));
+}
+
+ZTEST(bindesc_read, test_bindesc_read_from_flash)
+{
+	struct bindesc_handle handle;
+
+	bindesc_open_flash(&handle, 0, flash_dev);
+
+	test_bindesc_read(&handle);
+}
+
+ZTEST(bindesc_read, test_bindesc_read_from_ram)
+{
+	struct bindesc_handle handle;
+
+	bindesc_open_ram(&handle, descriptors, sizeof(descriptors));
+
+	test_bindesc_read(&handle);
+}
+
+ZTEST_SUITE(bindesc_read, NULL, test_setup, NULL, NULL, NULL);

tests/subsys/bindesc/reading/testcase.yaml

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+common:
+  platform_allow:
+    - native_sim
+  integration_platforms:
+    - native_sim
+  tags: bindesc
+tests:
+  bindesc.read:
+    platform_allow:
+      - native_posix
+      - native_sim
+  bindesc.read.c99:
+    extra_args: CSTD="c99"
+  bindesc.read.c11:
+    extra_args: CSTD="c11"
+  bindesc.read.c17:
+    extra_args: CSTD="c17"
+  bindesc.read.gnu99:
+    extra_args: CSTD="gnu99"
+  bindesc.read.gnu11:
+    extra_args: CSTD="gnu11"
+  bindesc.read.gnu17:
+    extra_args: CSTD="gnu17"