Test that API Receipts can Unmarshal to types.Receipts

internal/ethapi/api_test.go

@@ -2202,7 +2202,14 @@ func TestRPCGetBlockReceipts(t *testing.T) {
 			t.Errorf("test %d: want no error, have %v", i, err)
 			continue
 		}
+		// confirm the result matches the expected output
 		testRPCResponseWithFile(t, i, result, "eth_getBlockReceipts", tt.file)
+
+		// confirm the api structure can marshal and unmarshal to Receipts
+		var rec types.Receipts
+		data, err := json.MarshalIndent(result, "", "  ")
+		require.NoError(t, err)
+		require.NoError(t, json.Unmarshal(data, &rec))
 	}
 }