tests: Bluetooth: audio: Unit test bt_audio_codec_cfg_get_* helpers

This adds unit tests for bt_audio_codec_cfg_get_* functio helpers.

Signed-off-by: Mariusz Skamra <mariusz.skamra@codecoup.pl>

tests/bluetooth/audio/codec/CMakeLists.txt

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+
+project(bluetooth_codec)
+find_package(Zephyr COMPONENTS unittest HINTS $ENV{ZEPHYR_BASE})
+
+add_subdirectory(${ZEPHYR_BASE}/tests/bluetooth/audio/codec/uut uut)
+
+target_link_libraries(testbinary PRIVATE uut)
+
+target_include_directories(testbinary PRIVATE include)
+
+target_sources(testbinary
+  PRIVATE
+    src/main.c
+)

tests/bluetooth/audio/codec/prj.conf

@@ -0,0 +1,15 @@
+CONFIG_ZTEST=y
+CONFIG_ZTEST_NEW_API=y
+
+CONFIG_BT=y
+CONFIG_BT_AUDIO=y
+CONFIG_BT_BAP_UNICAST_SERVER=y
+
+CONFIG_LOG=y
+CONFIG_BT_AUDIO_LOG_LEVEL_DBG=y
+CONFIG_BT_AUDIO_CODEC_LOG_LEVEL_DBG=y
+
+CONFIG_ASSERT=y
+CONFIG_ASSERT_LEVEL=2
+CONFIG_ASSERT_VERBOSE=y
+CONFIG_ASSERT_ON_ERRORS=y

tests/bluetooth/audio/codec/src/main.c

@@ -0,0 +1,73 @@
+/* main.c - Application main entry point */
+
+/*
+ * Copyright (c) 2023 Codecoup
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/fff.h>
+#include <zephyr/bluetooth/audio/audio.h>
+#include <zephyr/bluetooth/audio/bap_lc3_preset.h>
+
+DEFINE_FFF_GLOBALS;
+
+ZTEST_SUITE(audio_codec_test_suite, NULL, NULL, NULL, NULL, NULL);
+
+ZTEST(audio_codec_test_suite, test_bt_audio_codec_cfg_get_freq)
+{
+	const struct bt_bap_lc3_preset preset =
+		BT_BAP_LC3_UNICAST_PRESET_16_2_1(BT_AUDIO_LOCATION_FRONT_LEFT,
+						 BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED);
+	int ret;
+
+	ret = bt_audio_codec_cfg_get_freq(&preset.codec_cfg);
+	zassert_equal(ret, 16000u, "unexpected return value %d", ret);
+}
+
+ZTEST(audio_codec_test_suite, test_bt_audio_codec_cfg_get_frame_duration_us)
+{
+	const struct bt_bap_lc3_preset preset =
+		BT_BAP_LC3_UNICAST_PRESET_48_2_2(BT_AUDIO_LOCATION_FRONT_LEFT,
+						 BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED);
+	int ret;
+
+	ret = bt_audio_codec_cfg_get_frame_duration_us(&preset.codec_cfg);
+	zassert_equal(ret, 10000u, "unexpected return value %d", ret);
+}
+
+ZTEST(audio_codec_test_suite, test_bt_audio_codec_cfg_get_chan_allocation_val)
+{
+	const struct bt_bap_lc3_preset preset =
+		BT_BAP_LC3_UNICAST_PRESET_8_1_1(BT_AUDIO_LOCATION_FRONT_LEFT,
+						BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED);
+	enum bt_audio_location chan_allocation = BT_AUDIO_LOCATION_FRONT_RIGHT;
+	int err;
+
+	err = bt_audio_codec_cfg_get_chan_allocation_val(&preset.codec_cfg, &chan_allocation);
+	zassert_false(err, "unexpected error %d", err);
+	zassert_equal(chan_allocation, BT_AUDIO_LOCATION_FRONT_LEFT,
+		      "unexpected return value %d", chan_allocation);
+}
+
+ZTEST(audio_codec_test_suite, test_bt_audio_codec_cfg_get_octets_per_frame)
+{
+	const struct bt_bap_lc3_preset preset =
+		BT_BAP_LC3_UNICAST_PRESET_32_2_2(BT_AUDIO_LOCATION_FRONT_LEFT,
+						 BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED);
+	int ret;
+
+	ret = bt_audio_codec_cfg_get_octets_per_frame(&preset.codec_cfg);
+	zassert_equal(ret, 80u, "unexpected return value %d", ret);
+}
+
+ZTEST(audio_codec_test_suite, test_bt_audio_codec_cfg_get_frame_blocks_per_sdu)
+{
+	const struct bt_bap_lc3_preset preset =
+		BT_BAP_LC3_UNICAST_PRESET_48_5_1(BT_AUDIO_LOCATION_FRONT_LEFT,
+						 BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED);
+	int ret;
+
+	ret = bt_audio_codec_cfg_get_frame_blocks_per_sdu(&preset.codec_cfg, true);
+	zassert_equal(ret, 1u, "unexpected return value %d", ret);
+}

tests/bluetooth/audio/codec/testcase.yaml

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+common:
+  tags:
+    - bluetooth
+    - bluetooth_audio
+tests:
+  bluetooth.audio.codec.test:
+    type: unit

tests/bluetooth/audio/codec/uut/CMakeLists.txt

@@ -0,0 +1,21 @@
+#
+# Copyright (c) 2023 Codecoup
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+# CMakeLists.txt file for creating of uut library.
+#
+
+add_library(uut STATIC
+  ${ZEPHYR_BASE}/subsys/bluetooth/audio/audio.c
+  ${ZEPHYR_BASE}/subsys/bluetooth/audio/codec.c
+  ${ZEPHYR_BASE}/subsys/bluetooth/common/bt_str.c
+  ${ZEPHYR_BASE}/subsys/logging/log_minimal.c
+  ${ZEPHYR_BASE}/subsys/net/buf_simple.c
+)
+
+add_subdirectory(${ZEPHYR_BASE}/tests/bluetooth/audio/mocks mocks)
+
+target_link_libraries(uut PUBLIC test_interface mocks)
+
+target_compile_options(uut PRIVATE -std=c11 -include ztest.h)