Small testing updates

Author: courtneyeh

Diff for: validator/api/src/test/java/tech/pegasys/teku/validator/api/GraffitiManagerTest.java

@@ -156,7 +156,7 @@ private void checkGraffitiFile(final BLSPublicKey publicKey, final String graffi
       final Bytes32 parsedBytes = GraffitiParser.loadFromFile(filePath);
       assertThat(parsedBytes).isEqualTo(expectedBytes);
     } catch (GraffitiLoaderException e) {
-      fail(e.getMessage());
+      fail(e.toString());
     }
   }
 

Diff for: validator/api/src/test/java/tech/pegasys/teku/validator/api/UpdatableGraffitiProviderTest.java

@@ -71,7 +71,7 @@ void get_shouldGetStorageGraffitiWhenAvailable(@TempDir final Path tempDir) thro
   }
 
   @Test
-  void get_shouldUseDefaultProviderWhenGraffitiTooLong(@TempDir final Path tempDir)
+  void get_shouldUseDefaultProviderWhenStoredGraffitiTooLong(@TempDir final Path tempDir)
       throws IOException {
     dataDirLayout = new SimpleDataDirLayout(tempDir);
     provider = new UpdatableGraffitiProvider(dataDirLayout, publicKey, defaultProvider);