src/librustdoc/passes/unindent_comments/tests.rs

   1 use super::*;
   2 use rustc_span::create_default_session_globals_then;
   3 use rustc_span::source_map::DUMMY_SP;
   4 use rustc_span::symbol::Symbol;
   5
   6 fn create_doc_fragment(s: &str) -> Vec<DocFragment> {
   7     vec![DocFragment {
   8         line: 0,
   9         span: DUMMY_SP,
  10         parent_module: None,
  11         doc: Symbol::intern(s),
  12         kind: DocFragmentKind::SugaredDoc,
  13         need_backline: false,
  14         indent: 0,
  15     }]
  16 }
  17
  18 #[track_caller]
  19 fn run_test(input: &str, expected: &str) {
  20     create_default_session_globals_then(|| {
  21         let mut s = create_doc_fragment(input);
  22         unindent_fragments(&mut s);
  23         assert_eq!(&s.iter().collect::<String>(), expected);
  24     });
  25 }
  26
  27 #[test]
  28 fn should_unindent() {
  29     run_test("    line1\n    line2", "line1\nline2");
  30 }
  31
  32 #[test]
  33 fn should_unindent_multiple_paragraphs() {
  34     run_test("    line1\n\n    line2", "line1\n\nline2");
  35 }
  36
  37 #[test]
  38 fn should_leave_multiple_indent_levels() {
  39     // Line 2 is indented another level beyond the
  40     // base indentation and should be preserved
  41     run_test("    line1\n\n        line2", "line1\n\n    line2");
  42 }
  43
  44 #[test]
  45 fn should_ignore_first_line_indent() {
  46     run_test("line1\n    line2", "line1\n    line2");
  47 }
  48
  49 #[test]
  50 fn should_not_ignore_first_line_indent_in_a_single_line_para() {
  51     run_test("line1\n\n    line2", "line1\n\n    line2");
  52 }
  53
  54 #[test]
  55 fn should_unindent_tabs() {
  56     run_test("\tline1\n\tline2", "line1\nline2");
  57 }
  58
  59 #[test]
  60 fn should_trim_mixed_indentation() {
  61     run_test("\t    line1\n\t    line2", "line1\nline2");
  62     run_test("    \tline1\n    \tline2", "line1\nline2");
  63 }
  64
  65 #[test]
  66 fn should_not_trim() {
  67     run_test("\t    line1  \n\t    line2", "line1  \nline2");
  68     run_test("    \tline1  \n    \tline2", "line1  \nline2");
  69 }