Add test for status codes

Signed-off-by: Richard Bair <rbair23@users.noreply.github.com>

pbj-core/pbj-runtime/src/test/java/com/hedera/pbj/runtime/grpc/GrpcStatusTest.java

@@ -0,0 +1,33 @@
+package com.hedera.pbj.runtime.grpc;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+class GrpcStatusTest {
+    /**
+     * The specific ordinal values must match exactly the expectations as set forth in the specification. This test
+     * "fixes" them in place. Any changes to the order in which fields are placed in GrpcStatus will break this test,
+     * as the ordinal values will change. The test MUST NOT BE adapted to match.
+     */
+    @Test
+    void statusCodesAreSpecific() {
+        assertThat(GrpcStatus.OK.ordinal()).isZero();
+        assertThat(GrpcStatus.CANCELLED.ordinal()).isEqualTo(1);
+        assertThat(GrpcStatus.UNKNOWN.ordinal()).isEqualTo(2);
+        assertThat(GrpcStatus.INVALID_ARGUMENT.ordinal()).isEqualTo(3);
+        assertThat(GrpcStatus.DEADLINE_EXCEEDED.ordinal()).isEqualTo(4);
+        assertThat(GrpcStatus.NOT_FOUND.ordinal()).isEqualTo(5);
+        assertThat(GrpcStatus.ALREADY_EXISTS.ordinal()).isEqualTo(6);
+        assertThat(GrpcStatus.PERMISSION_DENIED.ordinal()).isEqualTo(7);
+        assertThat(GrpcStatus.RESOURCE_EXHAUSTED.ordinal()).isEqualTo(8);
+        assertThat(GrpcStatus.FAILED_PRECONDITION.ordinal()).isEqualTo(9);
+        assertThat(GrpcStatus.ABORTED.ordinal()).isEqualTo(10);
+        assertThat(GrpcStatus.OUT_OF_RANGE.ordinal()).isEqualTo(11);
+        assertThat(GrpcStatus.UNIMPLEMENTED.ordinal()).isEqualTo(12);
+        assertThat(GrpcStatus.INTERNAL.ordinal()).isEqualTo(13);
+        assertThat(GrpcStatus.UNIMPLEMENTED.ordinal()).isEqualTo(14);
+        assertThat(GrpcStatus.DATA_LOSS.ordinal()).isEqualTo(15);
+        assertThat(GrpcStatus.UNAUTHENTICATED.ordinal()).isEqualTo(16);
+    }
+}