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Improve tests

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This commit is contained in:
Adolfo Ochagavía 2018-10-13 21:33:15 +02:00
parent c5069eeef5
commit 2bc9e9f327
2 changed files with 63 additions and 30 deletions
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38
crates/test_utils/src/lib.rs
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@ -38,22 +38,44 @@ pub fn assert_eq_dbg(expected: &str, actual: &impl fmt::Debug) {
}
pub fn extract_offset(text: &str) -> (TextUnit, String) {
let cursor = "<|>";
let cursor_pos = match text.find(cursor) {
match try_extract_offset(text) {
None => panic!("text should contain cursor marker"),
Some(pos) => pos,
};
Some(result) => result,
}
}
pub fn try_extract_offset(text: &str) -> Option<(TextUnit, String)> {
let cursor = "<|>";
let cursor_pos = text.find(cursor)?;
let mut new_text = String::with_capacity(text.len() - cursor.len());
new_text.push_str(&text[..cursor_pos]);
new_text.push_str(&text[cursor_pos + cursor.len()..]);
let cursor_pos = TextUnit::from(cursor_pos as u32);
(cursor_pos, new_text)
Some((cursor_pos, new_text))
}
pub fn extract_range(text: &str) -> (TextRange, String) {
let (start, text) = extract_offset(text);
let (end, text) = extract_offset(&text);
(TextRange::from_to(start, end), text)
match try_extract_range(text) {
None => panic!("text should contain cursor marker"),
Some(result) => result,
}
}
pub fn try_extract_range(text: &str) -> Option<(TextRange, String)> {
let (start, text) = try_extract_offset(text)?;
let (end, text) = try_extract_offset(&text)?;
Some((TextRange::from_to(start, end), text))
}
pub fn extract_ranges(text: &str) -> (Vec<TextRange>, String) {
let mut ranges = Vec::new();
let mut text = String::from(text);
while let Some((range, new_text)) = try_extract_range(&text) {
text = new_text;
ranges.push(range);
}
(ranges, text)
}
pub fn add_cursor(text: &str, offset: TextUnit) -> String {