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tests: Bluetooth: CAP: Handover u->b unittests
Adds unittests for the handover from unicast to broadcast APIs. Signed-off-by: Emil Gydesen <[email protected]>
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‎subsys/bluetooth/audio/bap_broadcast_assistant.c‎

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#include <zephyr/bluetooth/l2cap.h>
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#include <zephyr/bluetooth/buf.h>
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#include <zephyr/bluetooth/uuid.h>
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#include <zephyr/device.h>
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#include <zephyr/init.h>
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#include <zephyr/kernel.h>
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#include <zephyr/net_buf.h>

‎tests/bluetooth/audio/cap_handover/CMakeLists.txt‎

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# SPDX-License-Identifier: Apache-2.0
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cmake_minimum_required(VERSION 3.20.0)
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find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
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project(bluetooth_cap_handover)
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target_include_directories(app PRIVATE
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${ZEPHYR_BASE}/subsys/bluetooth/
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${ZEPHYR_BASE}/tests/bluetooth/audio/cap_handover/include
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${ZEPHYR_BASE}/tests/bluetooth/audio/mocks/include
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)
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target_sources(app PRIVATE
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# Test source files
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src/unicast_to_broadcast.c
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src/test_common.c
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# UUT files
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uut/bap_broadcast_assistant.c
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uut/bap_unicast_client.c
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uut/cap_handover.c
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uut/cap_initiator.c
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uut/csip.c
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# Stack source file
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${ZEPHYR_BASE}/subsys/bluetooth/audio/audio.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/codec.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/bap_broadcast_source.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/bap_iso.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/bap_stream.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/cap_commander.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/cap_handover.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/cap_initiator.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/cap_common.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/cap_stream.c
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${ZEPHYR_BASE}/subsys/bluetooth/audio/ccid.c
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${ZEPHYR_BASE}/subsys/bluetooth/common/addr.c
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${ZEPHYR_BASE}/subsys/bluetooth/common/bt_str.c
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${ZEPHYR_BASE}/subsys/bluetooth/host/uuid.c
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# Mock files
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${ZEPHYR_BASE}/tests/bluetooth/audio/mocks/src/adv.c
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${ZEPHYR_BASE}/tests/bluetooth/audio/mocks/src/conn.c
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${ZEPHYR_BASE}/tests/bluetooth/audio/mocks/src/gatt.c
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${ZEPHYR_BASE}/tests/bluetooth/audio/mocks/src/iso.c
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)

‎tests/bluetooth/audio/cap_handover/Kconfig‎

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# Copyright (c) 2025 Nordic Semiconductor ASA
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# SPDX-License-Identifier: Apache-2.0
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config BT_ATT_PREPARE_COUNT
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int
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default 1
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config BT_AUDIO
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bool
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default y
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config BT_AUDIO_CODEC_CFG_MAX_METADATA_SIZE
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int
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default 20
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config BT_BAP_BROADCAST_ASSISTANT
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bool
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default y
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config BT_BAP_BROADCAST_SOURCE
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bool
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default y
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config BT_BAP_BROADCAST_SRC_STREAM_COUNT
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int
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default 2
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config BT_BAP_SCAN_DELEGATOR
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bool
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default y
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config BT_BAP_STREAM
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bool
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default y
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config BT_BAP_UNICAST_CLIENT
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bool
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default y
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config BT_BAP_UNICAST_CLIENT_GROUP_COUNT
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int
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default 1
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config BT_BAP_UNICAST_CLIENT_GROUP_STREAM_COUNT
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int
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default 4
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config BT_BAP_UNICAST_CLIENT_ASE_SNK_COUNT
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int
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default 2
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config BT_BONDABLE
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bool
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default y
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config BT_BUF_ACL_RX_SIZE
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int
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default 69
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config BT_BUF_ACL_TX_COUNT
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int
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default 5
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config BT_BUF_EVT_RX_COUNT
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int
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default 10
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config BT_CONN
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bool
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default y
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config BT_CSIP_SET_COORDINATOR
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bool
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default y
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config BT_ISO_MAX_BIG
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int
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default 1
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config BT_ISO_MAX_CIG
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int
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default 1
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config BT_ISO_MAX_CHAN
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int
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default 4
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config BT_MAX_PAIRED
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int
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default 1
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config BT_L2CAP_TX_MTU
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int
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default 65
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config BT_LOG
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bool
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default y
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config BT_MAX_CONN
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int
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default 2
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config BT_SMP
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bool
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default y
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# Include Zephyr's Kconfig.
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source "Kconfig"
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source "subsys/bluetooth/audio/Kconfig"
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source "subsys/bluetooth/Kconfig.logging"

‎tests/bluetooth/audio/cap_handover/include/cap_handover.h‎

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef MOCKS_CAP_HANDOVER_H_
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#define MOCKS_CAP_HANDOVER_H_
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#include <zephyr/bluetooth/audio/cap.h>
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#include <zephyr/bluetooth/audio/csip.h>
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#include <zephyr/bluetooth/bluetooth.h>
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#include <zephyr/fff.h>
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extern const struct bt_cap_handover_cb mock_cap_handover_cb;
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void mock_cap_handover_init(void);
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DECLARE_FAKE_VOID_FUNC(mock_unicast_to_broadcast_complete_cb, int, struct bt_conn *,
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struct bt_cap_unicast_group *, struct bt_cap_broadcast_source *);
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#endif /* MOCKS_CAP_HANDOVER_H_ */

‎tests/bluetooth/audio/cap_handover/include/cap_initiator.h‎

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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef MOCKS_CAP_INITIATOR_H_
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#define MOCKS_CAP_INITIATOR_H_
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#include <zephyr/bluetooth/audio/cap.h>
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#include <zephyr/bluetooth/audio/csip.h>
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#include <zephyr/bluetooth/bluetooth.h>
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#include <zephyr/fff.h>
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extern const struct bt_cap_initiator_cb mock_cap_initiator_cb;
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void mock_cap_initiator_init(void);
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DECLARE_FAKE_VOID_FUNC(mock_unicast_start_complete_cb, int, struct bt_conn *);
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#endif /* MOCKS_CAP_INITIATOR_H_ */

‎tests/bluetooth/audio/cap_handover/include/test_common.h‎

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/* test_common.h */
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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/bluetooth/audio/bap.h>
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#include <zephyr/bluetooth/audio/bap_lc3_preset.h>
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#include <zephyr/bluetooth/audio/cap.h>
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#include <zephyr/bluetooth/conn.h>
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void test_mocks_init(void);
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void test_mocks_cleanup(void);
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void mock_bt_csip_cleanup(void);
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void test_conn_init(struct bt_conn *conn);
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void test_unicast_set_state(struct bt_cap_stream *cap_stream, struct bt_conn *conn,
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struct bt_bap_ep *ep, struct bt_bap_lc3_preset *preset,
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enum bt_bap_ep_state state);

‎tests/bluetooth/audio/cap_handover/prj.conf‎

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CONFIG_ZTEST=y
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CONFIG_NET_BUF=y
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CONFIG_BT_CAP_INITIATOR=y
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CONFIG_BT_CAP_COMMANDER=y
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CONFIG_BT_CAP_HANDOVER=y
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CONFIG_ASSERT=y
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CONFIG_ASSERT_LEVEL=2
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CONFIG_ASSERT_VERBOSE=y
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CONFIG_LOG=y
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CONFIG_BT_BAP_STREAM_LOG_LEVEL_DBG=y
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CONFIG_BT_CAP_COMMON_LOG_LEVEL_DBG=y
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CONFIG_BT_CAP_INITIATOR_LOG_LEVEL_DBG=y
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CONFIG_BT_CAP_COMMANDER_LOG_LEVEL_DBG=y
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CONFIG_BT_BAP_BROADCAST_SOURCE_LOG_LEVEL_DBG=y

‎tests/bluetooth/audio/cap_handover/src/test_common.c‎

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/* test_common.c - common procedures for unit test of CAP handover */
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/*
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* Copyright (c) 2025 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/bluetooth/audio/bap.h>
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#include <zephyr/bluetooth/audio/bap_lc3_preset.h>
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#include <zephyr/bluetooth/audio/cap.h>
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#include <zephyr/bluetooth/conn.h>
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#include <zephyr/bluetooth/hci_types.h>
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#include <zephyr/fff.h>
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#include <zephyr/sys/printk.h>
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#include <zephyr/ztest_assert.h>
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#include "audio/bap_endpoint.h"
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#include "cap_initiator.h"
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#include "cap_handover.h"
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#include "conn.h"
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#include "test_common.h"
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DEFINE_FFF_GLOBALS;
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void test_mocks_init(void)
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{
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mock_cap_initiator_init();
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mock_cap_handover_init();
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}
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void test_mocks_cleanup(void)
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{
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mock_bt_csip_cleanup();
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}
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void test_conn_init(struct bt_conn *conn)
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{
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conn->index = 0;
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conn->info.type = BT_CONN_TYPE_LE;
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conn->info.role = BT_CONN_ROLE_CENTRAL;
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conn->info.state = BT_CONN_STATE_CONNECTED;
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conn->info.security.level = BT_SECURITY_L2;
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conn->info.security.enc_key_size = BT_ENC_KEY_SIZE_MAX;
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conn->info.security.flags = BT_SECURITY_FLAG_OOB | BT_SECURITY_FLAG_SC;
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}
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void test_unicast_set_state(struct bt_cap_stream *cap_stream, struct bt_conn *conn,
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struct bt_bap_ep *ep, struct bt_bap_lc3_preset *preset,
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enum bt_bap_ep_state state)
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{
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struct bt_bap_stream *bap_stream = &cap_stream->bap_stream;
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printk("Setting stream %p to state %d\n", bap_stream, state);
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if (state == BT_BAP_EP_STATE_IDLE) {
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return;
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}
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zassert_not_null(cap_stream);
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zassert_not_null(conn);
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zassert_not_null(ep);
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zassert_not_null(preset);
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bap_stream->conn = conn;
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bap_stream->ep = ep;
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bap_stream->qos = &preset->qos;
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bap_stream->codec_cfg = &preset->codec_cfg;
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bap_stream->ep->state = state;
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}

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