add a third argument catch

backend/src/main/java/gov/cdc/usds/simplereport/api/heathcheck/BackendAndDatabaseHealthIndicator.java

@@ -28,12 +28,15 @@ public Health health() {
         log.info("Okta status didn't return ACTIVE, instead returned " + oktaStatus);
         return Health.down().build();
       }
-
       return Health.up().build();
+    } catch (IllegalArgumentException e) {
+      // reach into the ff repository returned a bad value
+      return Health.down().build();
     } catch (JDBCConnectionException e) {
+      // db connection issue
       return Health.down().build();
-      // Okta API call errored
     } catch (ApiException e) {
+      // Okta API call errored
       log.info(e.getMessage());
       return Health.down().build();
     }

backend/src/test/java/gov/cdc/usds/simplereport/api/healthcheck/BackendAndDatabaseHealthIndicatorTest.java

@@ -36,14 +36,22 @@ void health_succeedsWhenReposDoesntThrow() {
   }
 
   @Test
-  void health_failsWhenFeatureFlagRepoDoesntThrow() {
+  void health_failsWhenDBConnectionThrows() {
     JDBCConnectionException dbConnectionException =
         new JDBCConnectionException(
             "connection issue", new SQLException("some reason", "some state"));
     when(mockFeatureFlagRepo.findAll()).thenThrow(dbConnectionException);
     assertThat(indicator.health()).isEqualTo(Health.down().build());
   }
 
+  @Test
+  void health_failsWhenFeatureFlagRepoThrows() {
+    IllegalArgumentException dbConnectionException =
+        new IllegalArgumentException("some argument message");
+    when(mockFeatureFlagRepo.findAll()).thenThrow(dbConnectionException);
+    assertThat(indicator.health()).isEqualTo(Health.down().build());
+  }
+
   @Test
   void health_failsWhenOktaRepoDoesntReturnActive() {
     when(mockOktaRepo.getApplicationStatusForHealthCheck()).thenReturn("INACTIVE");