From f48664068210b92f4884ee8e6fe8504dabcd4d9a Mon Sep 17 00:00:00 2001 From: Daiki Ihara Date: Fri, 4 Dec 2020 00:05:39 +0900 Subject: Extract tests module to file in ide_db crate --- crates/ide_db/src/line_index/tests.rs | 128 ++++++++++++++++++++++++++++++++++ 1 file changed, 128 insertions(+) create mode 100644 crates/ide_db/src/line_index/tests.rs (limited to 'crates/ide_db/src/line_index') diff --git a/crates/ide_db/src/line_index/tests.rs b/crates/ide_db/src/line_index/tests.rs new file mode 100644 index 000000000..05f7484e8 --- /dev/null +++ b/crates/ide_db/src/line_index/tests.rs @@ -0,0 +1,128 @@ +use super::*; + +#[test] +fn test_line_index() { + let text = "hello\nworld"; + let index = LineIndex::new(text); + assert_eq!(index.line_col(0.into()), LineCol { line: 0, col_utf16: 0 }); + assert_eq!(index.line_col(1.into()), LineCol { line: 0, col_utf16: 1 }); + assert_eq!(index.line_col(5.into()), LineCol { line: 0, col_utf16: 5 }); + assert_eq!(index.line_col(6.into()), LineCol { line: 1, col_utf16: 0 }); + assert_eq!(index.line_col(7.into()), LineCol { line: 1, col_utf16: 1 }); + assert_eq!(index.line_col(8.into()), LineCol { line: 1, col_utf16: 2 }); + assert_eq!(index.line_col(10.into()), LineCol { line: 1, col_utf16: 4 }); + assert_eq!(index.line_col(11.into()), LineCol { line: 1, col_utf16: 5 }); + assert_eq!(index.line_col(12.into()), LineCol { line: 1, col_utf16: 6 }); + + let text = "\nhello\nworld"; + let index = LineIndex::new(text); + assert_eq!(index.line_col(0.into()), LineCol { line: 0, col_utf16: 0 }); + assert_eq!(index.line_col(1.into()), LineCol { line: 1, col_utf16: 0 }); + assert_eq!(index.line_col(2.into()), LineCol { line: 1, col_utf16: 1 }); + assert_eq!(index.line_col(6.into()), LineCol { line: 1, col_utf16: 5 }); + assert_eq!(index.line_col(7.into()), LineCol { line: 2, col_utf16: 0 }); +} + +#[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.utf16_lines.len(), 0); +} + +#[test] +fn test_single_char() { + let col_index = LineIndex::new( + " +const C: char = 'メ'; +", + ); + + assert_eq!(col_index.utf16_lines.len(), 1); + assert_eq!(col_index.utf16_lines[&1].len(), 1); + assert_eq!(col_index.utf16_lines[&1][0], Utf16Char { start: 17.into(), end: 20.into() }); + + // UTF-8 to UTF-16, no changes + assert_eq!(col_index.utf8_to_utf16_col(1, 15.into()), 15); + + // UTF-8 to UTF-16 + assert_eq!(col_index.utf8_to_utf16_col(1, 22.into()), 20); + + // UTF-16 to UTF-8, no changes + assert_eq!(col_index.utf16_to_utf8_col(1, 15), TextSize::from(15)); + + // UTF-16 to UTF-8 + assert_eq!(col_index.utf16_to_utf8_col(1, 19), TextSize::from(21)); + + let col_index = LineIndex::new("a𐐏b"); + assert_eq!(col_index.utf16_to_utf8_col(0, 3), TextSize::from(5)); +} + +#[test] +fn test_string() { + let col_index = LineIndex::new( + " +const C: char = \"メ メ\"; +", + ); + + assert_eq!(col_index.utf16_lines.len(), 1); + assert_eq!(col_index.utf16_lines[&1].len(), 2); + assert_eq!(col_index.utf16_lines[&1][0], Utf16Char { start: 17.into(), end: 20.into() }); + assert_eq!(col_index.utf16_lines[&1][1], Utf16Char { start: 21.into(), end: 24.into() }); + + // UTF-8 to UTF-16 + assert_eq!(col_index.utf8_to_utf16_col(1, 15.into()), 15); + + assert_eq!(col_index.utf8_to_utf16_col(1, 21.into()), 19); + assert_eq!(col_index.utf8_to_utf16_col(1, 25.into()), 21); + + assert!(col_index.utf8_to_utf16_col(2, 15.into()) == 15); + + // UTF-16 to UTF-8 + assert_eq!(col_index.utf16_to_utf8_col(1, 15), TextSize::from(15)); + + // メ UTF-8: 0xE3 0x83 0xA1, UTF-16: 0x30E1 + assert_eq!(col_index.utf16_to_utf8_col(1, 17), TextSize::from(17)); // first メ at 17..20 + assert_eq!(col_index.utf16_to_utf8_col(1, 18), TextSize::from(20)); // space + assert_eq!(col_index.utf16_to_utf8_col(1, 19), TextSize::from(21)); // second メ at 21..24 + + assert_eq!(col_index.utf16_to_utf8_col(2, 15), TextSize::from(15)); +} + +#[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::>(); + 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::>(); + 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::>(); + let expected = vec![r(0, 1)]; + assert_eq!(actual, expected) +} -- cgit v1.2.3