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simplify and reduce number of values explored

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This commit is contained in:
Bernardo 2018-12-12 19:25:50 +01:00
parent 3d98744c2a
commit dee426e1b1
1 changed files with 23 additions and 29 deletions
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40
crates/ra_text_edit/src/test_utils.rs
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@ -24,41 +24,35 @@ pub fn arb_offset(text: &str) -> BoxedStrategy<TextUnit> {
}
pub fn arb_edits(text: &str) -> BoxedStrategy<Vec<AtomTextEdit>> {
let offsets = text_offsets(text);
let offsets_len = offsets.len();
if offsets_len == 0 {
return proptest::bool::ANY
.prop_flat_map(|b| {
if text.is_empty() {
// only valid edits
if b {
return Just(vec![])
.boxed()
.prop_union(
arb_text()
.prop_map(|text| vec![AtomTextEdit::insert(TextUnit::from(0), text)])
.boxed()
} else {
Just(vec![]).boxed()
}
})
.boxed(),
)
.boxed();
}
proptest::sample::subsequence(offsets, 0..offsets_len)
.prop_flat_map(|xs| {
let strategies: Vec<_> = xs
let offsets = text_offsets(text);
let max_cuts = offsets.len().min(7);
proptest::sample::subsequence(offsets, 0..max_cuts)
.prop_flat_map(|cuts| {
let strategies: Vec<_> = cuts
.chunks(2)
.map(|chunk| match chunk {
&[from, to] => {
let range = TextRange::from_to(from, to);
(proptest::bool::ANY)
.prop_flat_map(move |b| {
if b {
Just(AtomTextEdit::delete(range)).boxed()
} else {
Just(AtomTextEdit::delete(range))
.boxed()
.prop_union(
arb_text()
.prop_map(move |text| AtomTextEdit::replace(range, text))
.boxed()
}
})
.boxed(),
)
.boxed()
}
&[x] => arb_text()