1 files changed, 76 insertions, 0 deletions
diff --git a/third_party/rust/ron/tests/129_indexmap.rs b/third_party/rust/ron/tests/129_indexmap.rs
new file mode 100644
index 0000000000..7fae993548
--- /dev/null
+++ b/third_party/rust/ron/tests/129_indexmap.rs
@@ -0,0 +1,76 @@
+#[cfg(feature = "indexmap")]
+use ron::{de::from_str, Value};
+
+#[test]
+#[cfg(feature = "indexmap")]
+fn test_order_preserved() {
+    let file = r#"(
+tasks: {
+    "debug message": Dbg(
+      msg: "test message. some text after it."
+    ),
+    "shell command": Shell(
+      command: "ls",
+      args: Some([
+        "-l",
+        "-h",
+      ]),
+      ch_dir: Some("/"),
+    ),
+},
+)
+"#;
+
+    let value: Value = from_str(file).unwrap();
+    match value {
+        Value::Map(map) => match &map[&Value::String("tasks".to_owned())] {
+            Value::Map(map) => {
+                assert_eq!(
+                    *map.keys().next().unwrap(),
+                    Value::String("debug message".to_string())
+                );
+                assert_eq!(
+                    *map.keys().nth(1).unwrap(),
+                    Value::String("shell command".to_string())
+                );
+            }
+            _ => panic!(), // GRCOV_EXCL_LINE
+        },
+        _ => panic!(), // GRCOV_EXCL_LINE
+    }
+
+    let file = r#"(
+tasks: {
+    "shell command": Shell(
+      command: "ls",
+      args: Some([
+        "-l",
+        "-h",
+      ]),
+      ch_dir: Some("/")
+    ),
+    "debug message": Dbg(
+      msg: "test message. some text after it."
+    ),
+}
+)
+"#;
+
+    let value: Value = from_str(file).unwrap();
+    match value {
+        Value::Map(map) => match &map[&Value::String("tasks".to_owned())] {
+            Value::Map(map) => {
+                assert_eq!(
+                    *map.keys().next().unwrap(),
+                    Value::String("shell command".to_string())
+                );
+                assert_eq!(
+                    *map.keys().nth(1).unwrap(),
+                    Value::String("debug message".to_string())
+                );
+            }
+            _ => panic!(), // GRCOV_EXCL_LINE
+        },
+        _ => panic!(), // GRCOV_EXCL_LINE
+    }
+}