Add getSupportedExtensions to NNAPI IDevice

Bug: 118603011
Test: mma
Change-Id: I5bd1cf2dfd8c4700819d52a87931df2959ef6929
Merged-In: I5bd1cf2dfd8c4700819d52a87931df2959ef6929
(cherry picked from commit 6148d0f446d331f9e76f3efe6554e3f2cb1907aa)
diff --git a/neuralnetworks/1.2/vts/functional/BasicTests.cpp b/neuralnetworks/1.2/vts/functional/BasicTests.cpp
index 8c3ad15..0eec365 100644
--- a/neuralnetworks/1.2/vts/functional/BasicTests.cpp
+++ b/neuralnetworks/1.2/vts/functional/BasicTests.cpp
@@ -55,6 +55,23 @@
     });
     EXPECT_TRUE(ret.isOk());
 }
+
+// device supported extensions test
+TEST_F(NeuralnetworksHidlTest, GetDeviceSupportedExtensionsTest) {
+    Return<void> ret = device->getSupportedExtensions(
+            [](ErrorStatus status, const hidl_vec<Extension>& extensions) {
+                EXPECT_EQ(ErrorStatus::NONE, status);
+                for (auto& extension : extensions) {
+                    std::string extensionName = extension.name;
+                    EXPECT_FALSE(extensionName.empty());
+                    EXPECT_NE(extensionName.find("."), std::string::npos)
+                            << "Extension name must start with the reverse domain name of the "
+                               "vendor";
+                }
+            });
+    EXPECT_TRUE(ret.isOk());
+}
+
 }  // namespace functional
 }  // namespace vts
 }  // namespace V1_2