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test translate_offset_with_edit against simple impl for single edits

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This commit is contained in:
Bernardo 2018-12-14 18:00:35 +01:00
parent dee426e1b1
commit d951979159
6 changed files with 104 additions and 35 deletions
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1
crates/ra_text_edit/src/lib.rs
View file

@ -1,6 +1,5 @@
mod text_edit;
pub mod text_utils;
#[cfg(test)]
pub mod test_utils;
pub use crate::text_edit::{TextEdit, TextEditBuilder};

70
crates/ra_text_edit/src/test_utils.rs
View file

@ -1,4 +1,4 @@
use proptest::{prelude::*, proptest, proptest_helper};
use proptest::prelude::*;
use text_unit::{TextUnit, TextRange};
use crate::AtomTextEdit;
@ -66,42 +66,48 @@ pub fn arb_edits(text: &str) -> BoxedStrategy<Vec<AtomTextEdit>> {
.boxed()
}
fn arb_text_with_edits() -> BoxedStrategy<(String, Vec<AtomTextEdit>)> {
let text = arb_text();
text.prop_flat_map(|s| {
let edits = arb_edits(&s);
(Just(s), edits)
})
.boxed()
}
#[cfg(test)]
mod tests {
use super::*;
use proptest::{proptest, proptest_helper};
fn intersect(r1: TextRange, r2: TextRange) -> Option<TextRange> {
let start = r1.start().max(r2.start());
let end = r1.end().min(r2.end());
if start <= end {
Some(TextRange::from_to(start, end))
} else {
None
fn arb_text_with_edits() -> BoxedStrategy<(String, Vec<AtomTextEdit>)> {
let text = arb_text();
text.prop_flat_map(|s| {
let edits = arb_edits(&s);
(Just(s), edits)
})
.boxed()
}
}
proptest! {
#[test]
fn atom_text_edits_are_valid((text, edits) in arb_text_with_edits()) {
proptest_atom_text_edits_are_valid(text, edits)
fn intersect(r1: TextRange, r2: TextRange) -> Option<TextRange> {
let start = r1.start().max(r2.start());
let end = r1.end().min(r2.end());
if start <= end {
Some(TextRange::from_to(start, end))
} else {
None
}
}
proptest! {
#[test]
fn atom_text_edits_are_valid((text, edits) in arb_text_with_edits()) {
proptest_atom_text_edits_are_valid(text, edits)
}
}
}
fn proptest_atom_text_edits_are_valid(text: String, edits: Vec<AtomTextEdit>) {
// slicing doesn't panic
for e in &edits {
let _ = &text[e.delete];
}
// ranges do not overlap
for (i1, e1) in edits.iter().skip(1).enumerate() {
for e2 in &edits[0..i1] {
if intersect(e1.delete, e2.delete).is_some() {
assert!(false, "Overlapping ranges {} {}", e1.delete, e2.delete);
fn proptest_atom_text_edits_are_valid(text: String, edits: Vec<AtomTextEdit>) {
// slicing doesn't panic
for e in &edits {
let _ = &text[e.delete];
}
// ranges do not overlap
for i in 1..edits.len() {
let e1 = &edits[i];
for e2 in &edits[0..i] {
if intersect(e1.delete, e2.delete).is_some() {
assert!(false, "Overlapping ranges {} {}", e1.delete, e2.delete);
}
}
}
}