src/librustdoc/html/render/tests.rs

   1 use std::cmp::Ordering;
   2
   3 use super::print_item::compare_names;
   4 use super::{AllTypes, Buffer};
   5
   6 #[test]
   7 fn test_compare_names() {
   8     for &(a, b) in &[
   9         ("hello", "world"),
  10         ("", "world"),
  11         ("123", "hello"),
  12         ("123", ""),
  13         ("123test", "123"),
  14         ("hello", ""),
  15         ("hello", "hello"),
  16         ("hello123", "hello123"),
  17         ("hello123", "hello12"),
  18         ("hello12", "hello123"),
  19         ("hello01abc", "hello01xyz"),
  20         ("hello0abc", "hello0"),
  21         ("hello0", "hello0abc"),
  22         ("01", "1"),
  23     ] {
  24         assert_eq!(compare_names(a, b), a.cmp(b), "{:?} - {:?}", a, b);
  25     }
  26     assert_eq!(compare_names("u8", "u16"), Ordering::Less);
  27     assert_eq!(compare_names("u32", "u16"), Ordering::Greater);
  28     assert_eq!(compare_names("u8_to_f64", "u16_to_f64"), Ordering::Less);
  29     assert_eq!(compare_names("u32_to_f64", "u16_to_f64"), Ordering::Greater);
  30     assert_eq!(compare_names("u16_to_f64", "u16_to_f64"), Ordering::Equal);
  31     assert_eq!(compare_names("u16_to_f32", "u16_to_f64"), Ordering::Less);
  32 }
  33
  34 #[test]
  35 fn test_name_sorting() {
  36     let names = [
  37         "Apple", "Banana", "Fruit", "Fruit0", "Fruit00", "Fruit01", "Fruit1", "Fruit02", "Fruit2",
  38         "Fruit20", "Fruit30x", "Fruit100", "Pear",
  39     ];
  40     let mut sorted = names.to_owned();
  41     sorted.sort_by(|&l, r| compare_names(l, r));
  42     assert_eq!(names, sorted);
  43 }
  44
  45 #[test]
  46 fn test_all_types_prints_header_once() {
  47     // Regression test for #82477
  48     let all_types = AllTypes::new();
  49
  50     let mut buffer = Buffer::new();
  51     all_types.print(&mut buffer);
  52
  53     assert_eq!(1, buffer.into_inner().matches("List of all items").count());
  54 }