1 files changed, 47 insertions, 0 deletions
diff --git a/third_party/rust/ron/tests/289_enumerate_arrays.rs b/third_party/rust/ron/tests/289_enumerate_arrays.rs
new file mode 100644
index 0000000000..6e0d5c3071
--- /dev/null
+++ b/third_party/rust/ron/tests/289_enumerate_arrays.rs
@@ -0,0 +1,47 @@
+const EXPTECTED: &str = "[
+    /*[0]*/ None,
+    /*[1]*/ Some([]),
+    /*[2]*/ Some([
+        /*[0]*/ 42,
+    ]),
+    /*[3]*/ Some([
+        /*[0]*/ 4,
+        /*[1]*/ 2,
+    ]),
+    /*[4]*/ None,
+]";
+
+const EXPTECTED_COMPACT: &str = "[/*[0]*/ None, /*[1]*/ Some([]), /*[2]*/ Some([/*[0]*/ 42]), \
+/*[3]*/ Some([/*[0]*/ 4, /*[1]*/ 2]), /*[4]*/ None]";
+
+#[test]
+fn enumerate_arrays() {
+    let v: Vec<Option<Vec<u8>>> = vec![None, Some(vec![]), Some(vec![42]), Some(vec![4, 2]), None];
+
+    let pretty = ron::ser::PrettyConfig::new().enumerate_arrays(true);
+
+    let ser = ron::ser::to_string_pretty(&v, pretty).unwrap();
+
+    assert_eq!(ser, EXPTECTED);
+
+    let de: Vec<Option<Vec<u8>>> = ron::from_str(&ser).unwrap();
+
+    assert_eq!(v, de)
+}
+
+#[test]
+fn enumerate_compact_arrays() {
+    let v: Vec<Option<Vec<u8>>> = vec![None, Some(vec![]), Some(vec![42]), Some(vec![4, 2]), None];
+
+    let pretty = ron::ser::PrettyConfig::new()
+        .enumerate_arrays(true)
+        .compact_arrays(true);
+
+    let ser = ron::ser::to_string_pretty(&v, pretty).unwrap();
+
+    assert_eq!(ser, EXPTECTED_COMPACT);
+
+    let de: Vec<Option<Vec<u8>>> = ron::from_str(&ser).unwrap();
+
+    assert_eq!(v, de)
+}