Add basic test for plain list item.

src/parser/plain_list.rs

@@ -20,11 +20,17 @@ use crate::parser::util::start_of_line;
 use super::error::CustomError;
 use super::error::MyError;
 use super::error::Res;
+use super::greater_element::PlainList;
 use super::greater_element::PlainListItem;
 use super::parser_with_context::parser_with_context;
 use super::util::non_whitespace_character;
 use super::Context;
 
+#[allow(dead_code)]
+pub fn plain_list<'r, 's>(context: Context<'r, 's>, input: &'s str) -> Res<&'s str, PlainList<'s>> {
+    todo!()
+}
+
 #[allow(dead_code)]
 pub fn plain_list_item<'r, 's>(
     context: Context<'r, 's>,
@@ -105,3 +111,24 @@ fn get_context_item_indent<'r, 's>(context: Context<'r, 's>) -> Option<&'r usize
     }
     None
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::parser::parser_context::ContextElement;
+    use crate::parser::parser_context::ContextTree;
+    use crate::parser::parser_with_context::parser_with_context;
+
+    use super::*;
+
+    #[test]
+    fn plain_list_item_empty() {
+        let input = "1.";
+        let initial_context: ContextTree<'_, '_> = ContextTree::new();
+        let document_context =
+            initial_context.with_additional_node(ContextElement::DocumentRoot(input));
+        let plain_list_item_matcher = parser_with_context!(plain_list_item)(&document_context);
+        let (remaining, result) = plain_list_item_matcher(input).unwrap();
+        assert_eq!(remaining, "");
+        assert_eq!(result.source, "1.");
+    }
+}