Created a unified Android test for coverage.

[ Merge of http://go/wvgerrit/143889 ]

New test binary for generating code coverage information.  Run several
reliable, short runnning unit tests.  Actual test failures do not
affect the result of this test.

Bug: 138941105
Bug: 191681397
Test: Android cdm_coverage_test
Change-Id: I6b74d361a8a0e2896e0489acaa64d264158ecaa4

libwvdrmengine/build_all_unit_tests.sh

@@ -30,6 +30,7 @@ done
 # it does not run very long tests or tests needing special setup.
 WV_TEST_TARGETS="base64_test \
      buffer_reader_test \
+     cdm_coverage_test \
      cdm_engine_test \
      cdm_engine_metrics_decorator_unittest \
      cdm_feature_test \

libwvdrmengine/cdm/test/Android.mk

@@ -50,6 +50,9 @@ test_src_dir := ../core/test
 test_main := ../core/test/test_main.cpp
 include $(LOCAL_PATH)/integration-test.mk
 
+# coverage-test.mk will define test name.
+include $(LOCAL_PATH)/coverage-test.mk
+
 test_name := counter_metric_unittest
 test_src_dir := ../metrics/test
 include $(LOCAL_PATH)/unit-test.mk

libwvdrmengine/cdm/test/cdm_coverage_main.cpp

@@ -0,0 +1,49 @@
+// Copyright 2022 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine License
+// Agreement.
+#include <stdlib.h>
+
+#include <string>
+
+#include "gtest/gtest.h"
+
+#include "log.h"
+
+namespace wvcdm {
+namespace {
+void UpdateGtestFilter() {
+  const std::string initial_filter = ::testing::GTEST_FLAG(filter);
+  if (!initial_filter.empty()) {
+    LOGW("Ignoring provided GTEST filter: %s", initial_filter.c_str());
+  }
+  std::string final_filter("-");
+  // Sleepy tests.
+  final_filter.append("*VerifyUsageTimes*:*Refresh*:*TimingTest*");
+  final_filter.append(":*KeyDuration*:*CdmUseCase*");
+  final_filter.append(":*ExtendedDurationTest*");
+  // Slow tests.
+  final_filter.append(":*OEMCryptoMemory*:*Huge*:*NonceFlood*");
+  final_filter.append(
+      ":*TwoHundredEntries*:*ManyUsageEntries*:*UsageTableDefrag*");
+  final_filter.append(
+      ":*DecryptMax*:*MaxTotalKeys*:*OEMCryptoSessionTestsDecryptTests*");
+  final_filter.append(":*SharedMutex*:*Parallel*");
+  // Flacky tests.
+  final_filter.append(":*Repeated/ParallelCdmTest*");
+  // L1 only tests.
+  final_filter.append(":*Level1Required");
+  ::testing::GTEST_FLAG(filter) = final_filter;
+}
+}  // namespace
+}  // namespace wvcdm
+
+int main(int argc, char** argv) {
+  LOGI("Running Android CDM tests");
+  testing::InitGoogleTest(&argc, argv);
+  wvcdm::UpdateGtestFilter();
+  const int status = RUN_ALL_TESTS();
+  LOGD("CDM coverage test complete with status %d", status);
+  // Test is for coverage information only, actual test failure
+  // should not change the final result of the test executable.
+  return EXIT_SUCCESS;
+}

libwvdrmengine/cdm/test/cdm_test_main.cpp

@@ -1,17 +0,0 @@
-// Copyright 2021 Google LLC. All Rights Reserved. This file and proprietary
-// source code may only be used and distributed under the Widevine License
-// Agreement.
-#include <stdlib.h>
-
-#include "gtest/gtest.h"
-
-#include "log.h"
-
-int main(int argc, char** argv) {
-  LOGI("Running Android CDM tests");
-  testing::InitGoogleTest(&argc, argv);
-  const int status = RUN_ALL_TESTS();
-  LOGD("CDM test complete with status %d", status);
-  exit(status);  // Explicit call to exit() is required for code coverage.
-  return status;
-}

libwvdrmengine/cdm/test/coverage-test.mk

@@ -0,0 +1,89 @@
+# ----------------------------------------------------------------
+# Builds CDM Coverage Test.
+#
+include $(CLEAR_VARS)
+
+LOCAL_LICENSE_CONDITIONS := by_exception_only
+LOCAL_LICENSE_KINDS := legacy_by_exception_only
+LOCAL_MODULE := cdm_coverage_test
+LOCAL_MODULE_TAGS := tests
+
+LOCAL_SRC_FILES := \
+  ./cdm_coverage_main.cpp \
+  ../core/test/buffer_reader_test.cpp \
+  ../core/test/config_test_env.cpp \
+  ../core/test/device_files_unittest.cpp \
+  ../core/test/fake_provisioning_server.cpp \
+  ../core/test/http_socket.cpp \
+  ../core/test/initialization_data_unittest.cpp \
+  ../core/test/license_keys_unittest.cpp \
+  ../core/test/license_request.cpp \
+  ../core/test/service_certificate_unittest.cpp \
+  ../core/test/test_base.cpp \
+  ../core/test/test_printers.cpp \
+  ../core/test/url_request.cpp \
+  ../metrics/test/counter_metric_unittest.cpp \
+  ../metrics/test/distribution_unittest.cpp \
+  ../metrics/test/event_metric_unittest.cpp \
+  ../metrics/test/metrics_collections_unittest.cpp \
+  ../metrics/test/value_metric_unittest.cpp \
+  ../util/test/base64_test.cpp \
+  ../util/test/cdm_random_unittest.cpp \
+  ../util/test/file_store_unittest.cpp \
+  ../util/test/file_utils_unittest.cpp \
+  ../util/test/test_sleep.cpp \
+  ../../oemcrypto/test/oec_device_features.cpp \
+  ../../oemcrypto/test/oec_key_deriver.cpp \
+  ../../oemcrypto/test/oec_session_util.cpp \
+
+LOCAL_C_INCLUDES := \
+  vendor/widevine/libwvdrmengine/android/cdm/test \
+  vendor/widevine/libwvdrmengine/cdm/core/include \
+  vendor/widevine/libwvdrmengine/cdm/core/test \
+  vendor/widevine/libwvdrmengine/cdm/include \
+  vendor/widevine/libwvdrmengine/cdm/metrics/include \
+  vendor/widevine/libwvdrmengine/cdm/util/include \
+  vendor/widevine/libwvdrmengine/cdm/util/test \
+  vendor/widevine/libwvdrmengine/oemcrypto/include \
+  vendor/widevine/libwvdrmengine/oemcrypto/test \
+  vendor/widevine/libwvdrmengine/oemcrypto/test/fuzz_tests \
+  vendor/widevine/libwvdrmengine/oemcrypto/odk/include \
+  vendor/widevine/libwvdrmengine/oemcrypto/odk/kdo/include \
+
+LOCAL_C_INCLUDES += external/protobuf/src
+
+LOCAL_STATIC_LIBRARIES := \
+  libcdm \
+  libcdm_protos \
+  libcdm_utils \
+  libjsmn \
+  libgmock \
+  libgtest \
+  libwvlevel3 \
+  libwv_kdo \
+  libwv_odk \
+
+LOCAL_SHARED_LIBRARIES := \
+  libbase \
+  libcrypto \
+  libdl \
+  libhidlbase \
+  liblog \
+  libmedia_omx \
+  libprotobuf-cpp-lite \
+  libssl \
+  libstagefright_foundation \
+  libutils \
+
+LOCAL_CFLAGS += -DUNIT_TEST
+
+LOCAL_MODULE_OWNER := widevine
+LOCAL_PROPRIETARY_MODULE := true
+
+LOCAL_MODULE_PATH := $(TARGET_OUT_DATA)/nativetest
+
+ifneq ($(TARGET_ENABLE_MEDIADRM_64), true)
+LOCAL_MODULE_TARGET_ARCH := arm x86 mips
+endif
+
+include $(BUILD_EXECUTABLE)

libwvdrmengine/cdm/test/unit-test.mk

@@ -22,7 +22,6 @@ LOCAL_SRC_FILES := \
     ../core/test/url_request.cpp \
     ../../oemcrypto/test/oec_device_features.cpp \
     ../util/test/test_sleep.cpp \
-    ./cdm_test_main.cpp \
 
 LOCAL_C_INCLUDES := \
     vendor/widevine/libwvdrmengine/android/cdm/test \
@@ -47,6 +46,7 @@ LOCAL_STATIC_LIBRARIES := \
     libjsmn \
     libgmock \
     libgtest \
+    libgtest_main \
     libwvlevel3 \
 
 LOCAL_SHARED_LIBRARIES := \