Add test for csv_vectors example (#82)

Cargo.toml

@@ -44,3 +44,7 @@ axum = ["axum-framework", "futures"]
 
 [package.metadata.docs.rs]
 features = ["actix4", "warp"]
+
+[[example]]
+name = "csv_vectors"
+test = true

examples/csv_vectors.rs

@@ -8,7 +8,7 @@ use serde::de::DeserializeOwned;
 
 use std::default::Default;
 
-#[derive(Debug, Deserialize, Serialize)]
+#[derive(Debug, PartialEq, Deserialize, Serialize)]
 struct Query {
     #[serde(deserialize_with = "from_csv")]
     r: Vec<u8>,
@@ -21,6 +21,17 @@ fn main() {
     println!("{:?}", q);
 }
 
+#[test]
+fn deserialize_sequence() {
+    let q = "s=12&r=1,2,3";
+    let q: Query = qs::from_str(q).unwrap();
+    let expected = Query {
+        r: vec![1, 2, 3],
+        s: 12,
+    };
+    assert_eq!(q, expected);
+}
+
 fn from_csv<'de, D, T>(deserializer: D) -> Result<Vec<T>, D::Error>
 where
     D: serde::Deserializer<'de>,