Filter Cast Reciver tests

Merge from Widevine repo of http://go/wvgerrit/169070

This turns on the cast receiver tests for any device that
claims to support this feature. Previously, we had to
explicitly request these tests on the command line.

But since they do not pass for Prov 4.0, we fitler them out
in this case and reference a bug tracking that work.

We also switch to using GTEST_SKIP to skip the tests instead
of modifying the GTEST_FILTER.

Bug: 251240681
Bug: 269310676
Bug: 259455058
Bug: 259454969
Merged from https://widevine-internal-review.googlesource.com/166497

Change-Id: I1bcd749243a474b3f638547aa43c2805e86731af

libwvdrmengine/cdm/core/test/test_base.cpp

@@ -677,7 +677,13 @@ bool WvCdmTestBase::Initialize(int argc, const char* const argv[],
   // Figure out which tests are appropriate for OEMCrypto, based on features
   // supported.
   wvoec::global_features.Initialize();
-  wvoec::global_features.set_cast_receiver(is_cast_receiver);
+  if (is_cast_receiver) {
+    // Turn it on if passed in on the command line. Do not turn these tests off
+    // automtically -- instead, we'll let the caller filter them out if they
+    // need to. These tests will normally only run if the device claims to
+    // support being a cast receiver.
+    wvoec::global_features.set_cast_receiver(is_cast_receiver);
+  }
   // If the user requests --no_filter, we don't change the filter, otherwise, we
   // filter out features that are not supported.
   if (filter_tests) {

libwvdrmengine/oemcrypto/test/oec_device_features.cpp

@@ -122,7 +122,6 @@ void DeviceFeatures::Initialize() {
   switch (derive_key_method) {
     case NO_METHOD:
       printf("NO_METHOD: Cannot derive known session keys.\n");
-      // Note: cast_receiver left unchanged because set by user on command line.
       uses_keybox = false;
       loads_certificate = false;
       generic_crypto = false;
@@ -161,7 +160,6 @@ std::string DeviceFeatures::RestrictFilter(const std::string& initial_filter) {
       provisioning_method == OEMCrypto_BootCertificateChain)
                                       FilterOut(&filter, "OEMCryptoLoadsCert*");
   if (!generic_crypto)                FilterOut(&filter, "*GenericCrypto*");
-  if (!cast_receiver)                 FilterOut(&filter, "*CastReceiver*");
   if (!supports_cas)                  FilterOut(&filter, "*CasOnly*");
   if (derive_key_method == NO_METHOD) FilterOut(&filter, "*SessionTest*");
   if (provisioning_method != OEMCrypto_BootCertificateChain)

libwvdrmengine/oemcrypto/test/oemcrypto_security_test.cpp

@@ -772,6 +772,7 @@ TEST_F(OEMCryptoLoadsCertificateAlternates,
     ASSERT_TRUE(key_loaded_);
   }
   if (key_loaded_) {
+    // If the key did load, then it should be processed correctly.
     Session s;
     ASSERT_NO_FATAL_FAILURE(s.open());
     ASSERT_NO_FATAL_FAILURE(s.LoadWrappedRsaDrmKey(wrapped_rsa_key_));
@@ -804,6 +805,7 @@ TEST_F(OEMCryptoLoadsCertificateAlternates,
     ASSERT_TRUE(key_loaded_);
   }
   if (key_loaded_) {
+    // If the key did load, then it should be processed correctly.
     Session s;
     ASSERT_NO_FATAL_FAILURE(s.open());
     ASSERT_NO_FATAL_FAILURE(s.LoadWrappedRsaDrmKey(wrapped_rsa_key_));

libwvdrmengine/oemcrypto/test/oemcrypto_test.cpp

@@ -2310,6 +2310,13 @@ TEST_F(OEMCryptoLoadsCertificateAlternates, TestSignaturePKCS1) {
 // those devices.
 class OEMCryptoCastReceiverTest : public OEMCryptoLoadsCertificateAlternates {
  protected:
+  void SetUp() override {
+    OEMCryptoLoadsCertificateAlternates::SetUp();
+    if (!global_features.cast_receiver) {
+      GTEST_SKIP() << "OEMCrypto does not support CAST Receiver functionality";
+    }
+  }
+
   vector<uint8_t> encode(uint8_t type, const vector<uint8_t>& substring) {
     vector<uint8_t> result;
     result.push_back(type);

libwvdrmengine/oemcrypto/test/oemcrypto_test_main.cpp

@@ -46,7 +46,13 @@ int main(int argc, char** argv) {
   }
   wvutil::g_cutoff = static_cast<wvutil::LogPriority>(verbosity);
   wvoec::global_features.Initialize();
-  wvoec::global_features.set_cast_receiver(is_cast_receiver);
+  if (is_cast_receiver) {
+    // Turn it on if passed in on the command line. Do not turn these tests off
+    // automtically -- instead, we'll let the caller filter them out if they
+    // need to. These tests will normally only run if the device claims to
+    // support being a cast receiver.
+    wvoec::global_features.set_cast_receiver(is_cast_receiver);
+  }
   // Init GTest after device properties has been initialized.
   ::testing::InitGoogleTest(&argc, argv);
   // If the user requests --no_filter, we don't change the filter, otherwise, we