Bluetooth: tests: Add tests for L2CAP

This adds initial test for L2CAP APIs that don't require a connection
thus can be run without any extra setup.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

tests/bluetooth/l2cap/CMakeLists.txt

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.13.1)
+include($ENV{ZEPHYR_BASE}/cmake/app/boilerplate.cmake NO_POLICY_SCOPE)
+project(bluetooth_gatt)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/bluetooth/l2cap/prj.conf

@@ -0,0 +1,11 @@
+CONFIG_TEST=y
+CONFIG_ZTEST=y
+
+CONFIG_BT=y
+CONFIG_BT_CTLR=n
+CONFIG_BT_NO_DRIVER=y
+
+CONFIG_BT_DEBUG_LOG=y
+CONFIG_BT_PERIPHERAL=y
+CONFIG_BT_SMP=y
+CONFIG_BT_L2CAP_DYNAMIC_CHANNEL=y

tests/bluetooth/l2cap/src/main.c

@@ -0,0 +1,78 @@
+/* main.c - Application main entry point */
+
+/*
+ * Copyright (c) 2019 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr.h>
+#include <stddef.h>
+#include <ztest.h>
+
+#include <bluetooth/buf.h>
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/l2cap.h>
+
+static int l2cap_accept(struct bt_conn *conn, struct bt_l2cap_chan **chan)
+{
+	return -ENOSYS;
+}
+
+static struct bt_l2cap_server test_server = {
+	.accept		= l2cap_accept,
+};
+
+static struct bt_l2cap_server test_fixed_server = {
+	.accept		= l2cap_accept,
+	.psm		= 0x007f,
+};
+
+static struct bt_l2cap_server test_dyn_server = {
+	.accept		= l2cap_accept,
+	.psm		= 0x00ff,
+};
+
+static struct bt_l2cap_server test_inv_server = {
+	.accept		= l2cap_accept,
+	.psm		= 0xffff,
+};
+
+void test_l2cap_register(void)
+{
+	/* Attempt to register server with PSM auto allocation */
+	zassert_false(bt_l2cap_server_register(&test_server),
+		     "Test server registration failed");
+
+	/* Attempt to register server with fixed PSM */
+	zassert_false(bt_l2cap_server_register(&test_fixed_server),
+		     "Test fixed PSM server registration failed");
+
+	/* Attempt to register server with dynamic PSM */
+	zassert_false(bt_l2cap_server_register(&test_dyn_server),
+		     "Test dynamic PSM server registration failed");
+
+	/* Attempt to register server with invalid PSM */
+	zassert_true(bt_l2cap_server_register(&test_inv_server),
+		     "Test invalid PSM server registration succeeded");
+
+	/* Attempt to re-register server with PSM auto allocation */
+	zassert_true(bt_l2cap_server_register(&test_server),
+		     "Test server duplicate succeeded");
+
+	/* Attempt to re-register server with fixed PSM */
+	zassert_true(bt_l2cap_server_register(&test_fixed_server),
+		     "Test fixed PSM server duplicate succeeded");
+
+	/* Attempt to re-register server with dynamic PSM */
+	zassert_true(bt_l2cap_server_register(&test_dyn_server),
+		     "Test dynamic PSM server duplicate succeeded");
+}
+
+/*test case main entry*/
+void test_main(void)
+{
+	ztest_test_suite(test_l2cap,
+			 ztest_unit_test(test_l2cap_register));
+	ztest_run_test_suite(test_l2cap);
+}

tests/bluetooth/l2cap/testcase.yaml

@@ -0,0 +1,4 @@
+tests:
+  bluetooth.gatt:
+    platform_whitelist: native_posix qemu_x86 qemu_cortex_m3
+    tags: bluetooth l2cap