Add BluetoothLeAudioCodecsProvider Unit Test

Add unit test for BluetoothLeAudioCodecsProvider and simplify
the public interface of BluetoothLeAudioCodecsProvider class

Bug: 253569201
Test: atest VtsHalBluetoothAudioTargetTest
Test: atest BluetoothLeAudioCodecsProviderTest
Test: manual test
Change-Id: I064eb4058b129a571cf9dbb91b85bafe7236b735
Merged-In: I064eb4058b129a571cf9dbb91b85bafe7236b735
(cherry picked from commit d7f565a943c5c6bf08a16c22ea15c2c6b628a00e)

1 files changed, 34 insertions, 5 deletions

diff --git a/bluetooth/audio/utils/aidl_session/BluetoothLeAudioCodecsProvider.cpp b/bluetooth/audio/utils/aidl_session/BluetoothLeAudioCodecsProvider.cpp
index bf492706c8..1dec900aed 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothLeAudioCodecsProvider.cpp
+++ b/bluetooth/audio/utils/aidl_session/BluetoothLeAudioCodecsProvider.cpp
@@ -34,20 +34,40 @@ static const AudioLocation kMonoAudio = AudioLocation::UNKNOWN;
 
 static std::vector<LeAudioCodecCapabilitiesSetting> leAudioCodecCapabilities;
 
+static bool isInvalidFileContent = false;
+
+std::optional<setting::LeAudioOffloadSetting>
+BluetoothLeAudioCodecsProvider::ParseFromLeAudioOffloadSettingFile() {
+  if (!leAudioCodecCapabilities.empty() || isInvalidFileContent) {
+    return std::nullopt;
+  }
+  auto le_audio_offload_setting =
+      setting::readLeAudioOffloadSetting(kLeAudioCodecCapabilitiesFile);
+  if (!le_audio_offload_setting.has_value()) {
+    LOG(ERROR) << __func__ << ": Failed to read "
+               << kLeAudioCodecCapabilitiesFile;
+  }
+  return le_audio_offload_setting;
+}
+
 std::vector<LeAudioCodecCapabilitiesSetting>
-BluetoothLeAudioCodecsProvider::GetLeAudioCodecCapabilities() {
+BluetoothLeAudioCodecsProvider::GetLeAudioCodecCapabilities(
+    const std::optional<setting::LeAudioOffloadSetting>&
+        le_audio_offload_setting) {
   if (!leAudioCodecCapabilities.empty()) {
     return leAudioCodecCapabilities;
   }
 
-  const auto le_audio_offload_setting =
-      setting::readLeAudioOffloadSetting(kLeAudioCodecCapabilitiesFile);
   if (!le_audio_offload_setting.has_value()) {
-    LOG(ERROR) << __func__ << ": Failed to read "
-               << kLeAudioCodecCapabilitiesFile;
+    LOG(ERROR)
+        << __func__
+        << ": input le_audio_offload_setting content need to be non empty";
     return {};
   }
 
+  ClearLeAudioCodecCapabilities();
+  isInvalidFileContent = true;
+
   std::vector<setting::Scenario> supported_scenarios =
       GetScenarios(le_audio_offload_setting);
   if (supported_scenarios.empty()) {
@@ -79,9 +99,18 @@ BluetoothLeAudioCodecsProvider::GetLeAudioCodecCapabilities() {
 
   leAudioCodecCapabilities =
       ComposeLeAudioCodecCapabilities(supported_scenarios);
+  isInvalidFileContent = leAudioCodecCapabilities.empty();
+
   return leAudioCodecCapabilities;
 }
 
+void BluetoothLeAudioCodecsProvider::ClearLeAudioCodecCapabilities() {
+  leAudioCodecCapabilities.clear();
+  configuration_map_.clear();
+  codec_configuration_map_.clear();
+  strategy_configuration_map_.clear();
+}
+
 std::vector<setting::Scenario> BluetoothLeAudioCodecsProvider::GetScenarios(
     const std::optional<setting::LeAudioOffloadSetting>&
         le_audio_offload_setting) {