Add tests around the "vdex" compilation reason conversions

Test: atest art_libartbase_tests
Bug: 239157041
Change-Id: Ibef5a543ea982937b47275d298911e7c909b8dc8
diff --git a/libartbase/base/metrics/metrics_test.cc b/libartbase/base/metrics/metrics_test.cc
index 2820290..fd7124b 100644
--- a/libartbase/base/metrics/metrics_test.cc
+++ b/libartbase/base/metrics/metrics_test.cc
@@ -661,6 +661,8 @@
             CompilationReason::kCmdLine);
   ASSERT_EQ(CompilationReasonFromName("error"),
             CompilationReason::kError);
+  ASSERT_EQ(CompilationReasonFromName("vdex"),
+            CompilationReason::kVdex);
 }
 
 TEST(CompilerReason, Name) {
@@ -700,6 +702,8 @@
             "cmdline");
   ASSERT_EQ(CompilationReasonName(CompilationReason::kError),
             "error");
+  ASSERT_EQ(CompilationReasonName(CompilationReason::kVdex),
+            "vdex");
 }
 }  // namespace metrics
 }  // namespace art