Bluetooth: Host: Add test for autoconnection of EATT channels

Checks that CONFIG_BT_EATT_MAX EATT channels are created automatically
after connection.

Signed-off-by: Herman Berget <herman.berget@nordicsemi.no>

tests/bluetooth/bsim_bt/bsim_test_eatt/CMakeLists.txt

@@ -16,6 +16,7 @@ project(bsim_test_host)
 target_sources(app PRIVATE
   src/common.c
   src/main_collision.c
+  src/main_autoconnect.c
   src/main.c
 )
 

tests/bluetooth/bsim_bt/bsim_test_eatt/prj_autoconnect.conf

@@ -0,0 +1,14 @@
+CONFIG_BT=y
+CONFIG_BT_CENTRAL=y
+CONFIG_BT_PERIPHERAL=y
+CONFIG_BT_SMP=y
+CONFIG_BT_L2CAP_DYNAMIC_CHANNEL=y
+CONFIG_BT_DEVICE_NAME="EATT test"
+CONFIG_BT_EATT=y
+CONFIG_BT_L2CAP_ECRED=y
+CONFIG_BT_EATT_MAX=5
+CONFIG_BT_MAX_CONN=1
+
+CONFIG_BT_TESTING=y
+CONFIG_BT_DEBUG_LOG=y
+CONFIG_ASSERT=y

tests/bluetooth/bsim_bt/bsim_test_eatt/src/main.c

@@ -7,10 +7,12 @@
 #include "bstests.h"
 
 extern struct bst_test_list *test_main_collision_install(struct bst_test_list *tests);
+extern struct bst_test_list *test_main_autoconnect_install(struct bst_test_list *tests);
 
 bst_test_install_t test_installers[] = {
 	test_main_collision_install,
-	NULL
+	test_main_autoconnect_install,
+	NULL,
 };
 
 void main(void)

tests/bluetooth/bsim_bt/bsim_test_eatt/src/main_autoconnect.c

@@ -0,0 +1,61 @@
+/* main_connect.c - Application main entry point */
+
+/*
+ * Copyright (c) 2022 Nordic Semiconductor
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "common.h"
+
+static void test_peripheral_main(void)
+{
+	peripheral_setup_and_connect();
+
+	while (bt_eatt_count(default_conn) < CONFIG_BT_EATT_MAX) {
+		k_sleep(K_MSEC(10));
+	}
+
+	/* Do not disconnect until the central also has connected all channels */
+	k_sleep(K_MSEC(1000));
+
+	disconnect();
+
+	PASS("EATT Peripheral tests Passed\n");
+}
+
+static void test_central_main(void)
+{
+	central_setup_and_connect();
+
+	while (bt_eatt_count(default_conn) < CONFIG_BT_EATT_MAX) {
+		k_sleep(K_MSEC(10));
+	}
+
+	wait_for_disconnect();
+
+	PASS("EATT Central tests Passed\n");
+}
+
+static const struct bst_test_instance test_def[] = {
+	{
+		.test_id = "peripheral_autoconnect",
+		.test_descr = "Peripheral autoconnect",
+		.test_post_init_f = test_init,
+		.test_tick_f = test_tick,
+		.test_main_f = test_peripheral_main,
+	},
+	{
+		.test_id = "central_autoconnect",
+		.test_descr = "Central autoconnect",
+		.test_post_init_f = test_init,
+		.test_tick_f = test_tick,
+		.test_main_f = test_central_main,
+	},
+	BSTEST_END_MARKER,
+};
+
+struct bst_test_list *test_main_autoconnect_install(struct bst_test_list *tests)
+{
+	return bst_add_tests(tests, test_def);
+}

tests/bluetooth/bsim_bt/bsim_test_eatt/tests_scripts/autoconnect.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Copyright (c) 2022 Nordic Semiconductor
+# SPDX-License-Identifier: Apache-2.0
+
+simulation_id="connection"
+verbosity_level=2
+process_ids=""; exit_code=0
+
+function Execute(){
+  if [ ! -f $1 ]; then
+    echo -e "  \e[91m`pwd`/`basename $1` cannot be found (did you forget to\
+ compile it?)\e[39m"
+    exit 1
+  fi
+  timeout 120 $@ & process_ids="$process_ids $!"
+}
+
+: "${BSIM_OUT_PATH:?BSIM_OUT_PATH must be defined}"
+
+#Give a default value to BOARD if it does not have one yet:
+BOARD="${BOARD:-nrf52_bsim}"
+
+cd ${BSIM_OUT_PATH}/bin
+
+Execute ./bs_${BOARD}_tests_bluetooth_bsim_bt_bsim_test_eatt_prj_autoconnect_conf \
+  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central_autoconnect
+
+Execute ./bs_${BOARD}_tests_bluetooth_bsim_bt_bsim_test_eatt_prj_autoconnect_conf \
+  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_autoconnect
+
+Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
+  -D=2 -sim_length=200e6 $@
+
+for process_id in $process_ids; do
+  wait $process_id || let "exit_code=$?"
+done
+exit $exit_code #the last exit code != 0

tests/bluetooth/bsim_bt/compile.sh

@@ -23,6 +23,7 @@ source ${ZEPHYR_BASE}/tests/bluetooth/bsim_bt/compile.source
 app=tests/bluetooth/bsim_bt/bsim_test_eatt conf_file=prj_encryption.conf compile
 app=tests/bluetooth/bsim_bt/bsim_test_eatt conf_file=prj_collision.conf compile
 app=tests/bluetooth/bsim_bt/bsim_test_eatt conf_file=prj_multiple_conn.conf compile
+app=tests/bluetooth/bsim_bt/bsim_test_eatt conf_file=prj_autoconnect.conf compile
 app=tests/bluetooth/bsim_bt/bsim_test_app conf_file=prj_split.conf \
 	compile
 app=tests/bluetooth/bsim_bt/bsim_test_app conf_file=prj_split_privacy.conf \