Add regression tests for tafia#567

failures (2):
  serde-de-seq (1):
    seq::variable_name::fixed_size::list_of_enum
  serde-issues (1):
    issue567

tests/serde-de-seq.rs

@@ -167,8 +167,8 @@ mod fixed_name {
         use pretty_assertions::assert_eq;
 
         #[derive(Debug, PartialEq, Deserialize)]
-        struct List {
-            item: [(); 3],
+        struct List<T = ()> {
+            item: [T; 3],
         }
 
         /// Simple case: count of elements matches expected size of sequence,
@@ -796,6 +796,31 @@ mod fixed_name {
             );
         }
 
+        #[test]
+        fn list_of_list() {
+            let data: List<Vec<String>> = from_str(
+                r#"
+                <root>
+                    <item>first item</item>
+                    <item>second item</item>
+                    <item>third item</item>
+                </root>
+                "#,
+            )
+            .unwrap();
+
+            assert_eq!(
+                data,
+                List {
+                    item: [
+                        vec!["first".to_string(), "item".to_string()],
+                        vec!["second".to_string(), "item".to_string()],
+                        vec!["third".to_string(), "item".to_string()],
+                    ],
+                }
+            );
+        }
+
         /// Checks that sequences represented by elements can contain sequences,
         /// represented by [`xs:list`s](https://www.w3schools.com/xml/el_list.asp)
         mod xs_list {
@@ -1889,9 +1914,9 @@ mod variable_name {
         use pretty_assertions::assert_eq;
 
         #[derive(Debug, PartialEq, Deserialize)]
-        struct List {
+        struct List<T = Choice> {
             #[serde(rename = "$value")]
-            item: [Choice; 3],
+            item: [T; 3],
         }
 
         /// Simple case: count of elements matches expected size of sequence,
@@ -2890,6 +2915,37 @@ mod variable_name {
             .unwrap_err();
         }
 
+        /// Test for https://github.com/tafia/quick-xml/issues/567
+        #[test]
+        fn list_of_enum() {
+            #[derive(Debug, PartialEq, Deserialize)]
+            enum Enum {
+                Variant(Vec<String>),
+            }
+
+            let data: List<Enum> = from_str(
+                r#"
+                <root>
+                    <Variant>first item</Variant>
+                    <Variant>second item</Variant>
+                    <Variant>third item</Variant>
+                </root>
+                "#,
+            )
+            .unwrap();
+
+            assert_eq!(
+                data,
+                List {
+                    item: [
+                        Enum::Variant(vec!["first".to_string(), "item".to_string()]),
+                        Enum::Variant(vec!["second".to_string(), "item".to_string()]),
+                        Enum::Variant(vec!["third".to_string(), "item".to_string()]),
+                    ],
+                }
+            );
+        }
+
         /// Checks that sequences represented by elements can contain sequences,
         /// represented by `xs:list`s
         mod xs_list {

tests/serde-issues.rs

@@ -354,6 +354,7 @@ mod issue537 {
     }
 }
 
+/// Regression test for https://github.com/tafia/quick-xml/issues/540.
 #[test]
 fn issue540() {
     #[derive(Serialize)]
@@ -379,6 +380,28 @@ fn issue540() {
     );
 }
 
+/// Regression test for https://github.com/tafia/quick-xml/issues/567.
+#[test]
+fn issue567() {
+    #[derive(Debug, Deserialize, PartialEq)]
+    struct Root {
+        #[serde(rename = "$value")]
+        items: Vec<Enum>,
+    }
+
+    #[derive(Debug, Deserialize, PartialEq)]
+    enum Enum {
+        List(Vec<()>),
+    }
+
+    assert_eq!(
+        from_str::<Root>("<root><List/></root>").unwrap(),
+        Root {
+            items: vec![Enum::List(vec![])],
+        }
+    );
+}
+
 /// Regression test for https://github.com/tafia/quick-xml/issues/580.
 #[test]
 fn issue580() {