mod common;
use common::*;
use dmc_parser::ast::*;
use pretty_assertions::assert_eq;

#[test]
fn empty_doc_has_zero_children() {
  let d = parse_doc("");
  assert!(d.children.is_empty(), "got {:?}", d.children);
}

#[test]
fn parses_h1() {
  let d = parse_doc("# Hello");
  assert_eq!(d.children.len(), 1);
  match &d.children[0] {
    Node::Heading(h) => {
      assert_eq!(h.level, 1);
      assert_eq!(h.slug(), "hello");
    },
    n => panic!("expected Heading, got {:?}", n),
  }
}

#[test]
fn parses_paragraph() {
  let d = parse_doc("hello world");
  assert!(matches!(d.children[0], Node::Paragraph(_)), "got {:?}", d.children);
}

#[test]
fn h2_followed_by_paragraph() {
  let d = parse_doc("## Title\nbody text");
  assert!(d.children.len() >= 2, "got {:?}", d.children);
  match &d.children[0] {
    Node::Heading(h) => assert_eq!(h.level, 2),
    n => panic!("expected Heading, got {:?}", n),
  }
}
