Add Ord to example

Author: spoutn1k

benches/encoding/proto.rs

@@ -1,36 +1,40 @@
 // Benchmark inspired by
 // https://github.com/tikv/rust-prometheus/blob/ab1ca7285d3463504381a5025ae1951e020d6796/benches/text_encoder.rs:write
 
-use criterion::{black_box, criterion_group, criterion_main, Criterion};
-use prometheus_client::encoding::prometheus_protobuf;
-use prometheus_client::metrics::counter::Counter;
-use prometheus_client::metrics::family::Family;
-use prometheus_client::metrics::histogram::{exponential_buckets, Histogram};
-use prometheus_client::registry::Registry;
+use criterion::{Criterion, black_box, criterion_group, criterion_main};
+use prometheus_client::{
+    encoding::prometheus_protobuf,
+    metrics::{
+        counter::Counter,
+        family::Family,
+        histogram::{Histogram, exponential_buckets},
+    },
+    registry::Registry,
+};
 use prometheus_client_derive_encode::{EncodeLabelSet, EncodeLabelValue};
 
 pub fn proto(c: &mut Criterion) {
     c.bench_function("encode", |b| {
-        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelSet, Debug)]
+        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelSet, Debug, PartialOrd, Ord)]
         struct CounterLabels {
             path: String,
             method: Method,
             some_number: u64,
         }
 
-        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelValue, Debug)]
+        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelValue, Debug, PartialOrd, Ord)]
         enum Method {
             Get,
             #[allow(dead_code)]
             Put,
         }
 
-        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelSet, Debug)]
+        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelSet, Debug, PartialOrd, Ord)]
         struct HistogramLabels {
             region: Region,
         }
 
-        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelValue, Debug)]
+        #[derive(Clone, Hash, PartialEq, Eq, EncodeLabelValue, Debug, PartialOrd, Ord)]
         enum Region {
             Africa,
             #[allow(dead_code)]