bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'lib/line-index/src/tests.rs')
-rw-r--r--lib/line-index/src/tests.rs73
1 files changed, 73 insertions, 0 deletions
diff --git a/lib/line-index/src/tests.rs b/lib/line-index/src/tests.rs
new file mode 100644
index 0000000000..4b58cfc47d
--- /dev/null
+++ b/lib/line-index/src/tests.rs
@@ -0,0 +1,73 @@
+use super::*;
+
+#[test]
+fn test_line_index() {
+ let text = "hello\nworld";
+ let table = [
+ (00, 0, 0),
+ (01, 0, 1),
+ (05, 0, 5),
+ (06, 1, 0),
+ (07, 1, 1),
+ (08, 1, 2),
+ (10, 1, 4),
+ (11, 1, 5),
+ (12, 1, 6),
+ ];
+
+ let index = LineIndex::new(text);
+ for (offset, line, col) in table {
+ assert_eq!(index.line_col(offset.into()), LineCol { line, col });
+ }
+
+ let text = "\nhello\nworld";
+ let table = [(0, 0, 0), (1, 1, 0), (2, 1, 1), (6, 1, 5), (7, 2, 0)];
+ let index = LineIndex::new(text);
+ for (offset, line, col) in table {
+ assert_eq!(index.line_col(offset.into()), LineCol { line, col });
+ }
+}
+
+#[test]
+fn test_char_len() {
+ assert_eq!('メ'.len_utf8(), 3);
+ assert_eq!('メ'.len_utf16(), 1);
+}
+
+#[test]
+fn test_empty_index() {
+ let col_index = LineIndex::new(
+ "
+const C: char = 'x';
+",
+ );
+ assert_eq!(col_index.line_wide_chars.len(), 0);
+}
+
+#[test]
+fn test_splitlines() {
+ fn r(lo: u32, hi: u32) -> TextRange {
+ TextRange::new(lo.into(), hi.into())
+ }
+
+ let text = "a\nbb\nccc\n";
+ let line_index = LineIndex::new(text);
+
+ let actual = line_index.lines(r(0, 9)).collect::<Vec<_>>();
+ let expected = vec![r(0, 2), r(2, 5), r(5, 9)];
+ assert_eq!(actual, expected);
+
+ let text = "";
+ let line_index = LineIndex::new(text);
+
+ let actual = line_index.lines(r(0, 0)).collect::<Vec<_>>();
+ let expected = vec![];
+ assert_eq!(actual, expected);
+
+ let text = "\n";
+ let line_index = LineIndex::new(text);
+
+ let actual = line_index.lines(r(0, 1)).collect::<Vec<_>>();
+ let expected = vec![r(0, 1)];
+ assert_eq!(actual, expected)
+}