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Don't punish every crate with serde-json

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This commit is contained in:
Aleksey Kladov 2021-03-08 20:27:08 +03:00
parent d57c9f7980
commit da73c93c7f
4 changed files with 96 additions and 99 deletions
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1
Cargo.lock generated
View file

@ -1612,7 +1612,6 @@ dependencies = [
"dissimilar",
"profile",
"rustc-hash",
"serde_json",
"stdx",
"text-size",
]

97
crates/rust-analyzer/tests/rust-analyzer/support.rs
View file

@ -13,7 +13,7 @@ use project_model::ProjectManifest;
use rust_analyzer::{config::Config, lsp_ext, main_loop};
use serde::Serialize;
use serde_json::{json, to_string_pretty, Value};
use test_utils::{find_mismatch, Fixture};
use test_utils::Fixture;
use vfs::AbsPathBuf;
use crate::testdir::TestDir;
@ -279,3 +279,98 @@ fn recv_timeout(receiver: &Receiver<Message>) -> Result<Option<Message>, Timeout
recv(after(timeout)) -> _ => Err(Timeout),
}
}
// Comparison functionality borrowed from cargo:
/// Compares JSON object for approximate equality.
/// You can use `[..]` wildcard in strings (useful for OS dependent things such
/// as paths). You can use a `"{...}"` string literal as a wildcard for
/// arbitrary nested JSON. Arrays are sorted before comparison.
fn find_mismatch<'a>(expected: &'a Value, actual: &'a Value) -> Option<(&'a Value, &'a Value)> {
match (expected, actual) {
(Value::Number(l), Value::Number(r)) if l == r => None,
(Value::Bool(l), Value::Bool(r)) if l == r => None,
(Value::String(l), Value::String(r)) if lines_match(l, r) => None,
(Value::Array(l), Value::Array(r)) => {
if l.len() != r.len() {
return Some((expected, actual));
}
let mut l = l.iter().collect::<Vec<_>>();
let mut r = r.iter().collect::<Vec<_>>();
l.retain(|l| match r.iter().position(|r| find_mismatch(l, r).is_none()) {
Some(i) => {
r.remove(i);
false
}
None => true,
});
if !l.is_empty() {
assert!(!r.is_empty());
Some((&l[0], &r[0]))
} else {
assert_eq!(r.len(), 0);
None
}
}
(Value::Object(l), Value::Object(r)) => {
fn sorted_values(obj: &serde_json::Map<String, Value>) -> Vec<&Value> {
let mut entries = obj.iter().collect::<Vec<_>>();
entries.sort_by_key(|it| it.0);
entries.into_iter().map(|(_k, v)| v).collect::<Vec<_>>()
}
let same_keys = l.len() == r.len() && l.keys().all(|k| r.contains_key(k));
if !same_keys {
return Some((expected, actual));
}
let l = sorted_values(l);
let r = sorted_values(r);
l.into_iter().zip(r).filter_map(|(l, r)| find_mismatch(l, r)).next()
}
(Value::Null, Value::Null) => None,
// magic string literal "{...}" acts as wildcard for any sub-JSON
(Value::String(l), _) if l == "{...}" => None,
_ => Some((expected, actual)),
}
}
/// Compare a line with an expected pattern.
/// - Use `[..]` as a wildcard to match 0 or more characters on the same line
/// (similar to `.*` in a regex).
fn lines_match(expected: &str, actual: &str) -> bool {
// Let's not deal with / vs \ (windows...)
// First replace backslash-escaped backslashes with forward slashes
// which can occur in, for example, JSON output
let expected = expected.replace(r"\\", "/").replace(r"\", "/");
let mut actual: &str = &actual.replace(r"\\", "/").replace(r"\", "/");
for (i, part) in expected.split("[..]").enumerate() {
match actual.find(part) {
Some(j) => {
if i == 0 && j != 0 {
return false;
}
actual = &actual[j + part.len()..];
}
None => return false,
}
}
actual.is_empty() || expected.ends_with("[..]")
}
#[test]
fn lines_match_works() {
assert!(lines_match("a b", "a b"));
assert!(lines_match("a[..]b", "a b"));
assert!(lines_match("a[..]", "a b"));
assert!(lines_match("[..]", "a b"));
assert!(lines_match("[..]b", "a b"));
assert!(!lines_match("[..]b", "c"));
assert!(!lines_match("b", "c"));
assert!(!lines_match("b", "cb"));
}

1
crates/test_utils/Cargo.toml
View file

@ -13,7 +13,6 @@ doctest = false
# Avoid adding deps here, this crate is widely used in tests it should compile fast!
dissimilar = "1.0.2"
text-size = "1.0.0"
serde_json = "1.0.48"
rustc-hash = "1.1.0"
stdx = { path = "../stdx", version = "0.0.0" }

96
crates/test_utils/src/lib.rs
View file

@ -18,7 +18,6 @@ use std::{
};
use profile::StopWatch;
use serde_json::Value;
use stdx::lines_with_ends;
use text_size::{TextRange, TextSize};
@ -281,101 +280,6 @@ fn main() {
);
}
// Comparison functionality borrowed from cargo:
/// Compare a line with an expected pattern.
/// - Use `[..]` as a wildcard to match 0 or more characters on the same line
/// (similar to `.*` in a regex).
pub fn lines_match(expected: &str, actual: &str) -> bool {
// Let's not deal with / vs \ (windows...)
// First replace backslash-escaped backslashes with forward slashes
// which can occur in, for example, JSON output
let expected = expected.replace(r"\\", "/").replace(r"\", "/");
let mut actual: &str = &actual.replace(r"\\", "/").replace(r"\", "/");
for (i, part) in expected.split("[..]").enumerate() {
match actual.find(part) {
Some(j) => {
if i == 0 && j != 0 {
return false;
}
actual = &actual[j + part.len()..];
}
None => return false,
}
}
actual.is_empty() || expected.ends_with("[..]")
}
#[test]
fn lines_match_works() {
assert!(lines_match("a b", "a b"));
assert!(lines_match("a[..]b", "a b"));
assert!(lines_match("a[..]", "a b"));
assert!(lines_match("[..]", "a b"));
assert!(lines_match("[..]b", "a b"));
assert!(!lines_match("[..]b", "c"));
assert!(!lines_match("b", "c"));
assert!(!lines_match("b", "cb"));
}
/// Compares JSON object for approximate equality.
/// You can use `[..]` wildcard in strings (useful for OS dependent things such
/// as paths). You can use a `"{...}"` string literal as a wildcard for
/// arbitrary nested JSON. Arrays are sorted before comparison.
pub fn find_mismatch<'a>(expected: &'a Value, actual: &'a Value) -> Option<(&'a Value, &'a Value)> {
match (expected, actual) {
(Value::Number(l), Value::Number(r)) if l == r => None,
(Value::Bool(l), Value::Bool(r)) if l == r => None,
(Value::String(l), Value::String(r)) if lines_match(l, r) => None,
(Value::Array(l), Value::Array(r)) => {
if l.len() != r.len() {
return Some((expected, actual));
}
let mut l = l.iter().collect::<Vec<_>>();
let mut r = r.iter().collect::<Vec<_>>();
l.retain(|l| match r.iter().position(|r| find_mismatch(l, r).is_none()) {
Some(i) => {
r.remove(i);
false
}
None => true,
});
if !l.is_empty() {
assert!(!r.is_empty());
Some((&l[0], &r[0]))
} else {
assert_eq!(r.len(), 0);
None
}
}
(Value::Object(l), Value::Object(r)) => {
fn sorted_values(obj: &serde_json::Map<String, Value>) -> Vec<&Value> {
let mut entries = obj.iter().collect::<Vec<_>>();
entries.sort_by_key(|it| it.0);
entries.into_iter().map(|(_k, v)| v).collect::<Vec<_>>()
}
let same_keys = l.len() == r.len() && l.keys().all(|k| r.contains_key(k));
if !same_keys {
return Some((expected, actual));
}
let l = sorted_values(l);
let r = sorted_values(r);
l.into_iter().zip(r).filter_map(|(l, r)| find_mismatch(l, r)).next()
}
(Value::Null, Value::Null) => None,
// magic string literal "{...}" acts as wildcard for any sub-JSON
(Value::String(l), _) if l == "{...}" => None,
_ => Some((expected, actual)),
}
}
/// Returns `false` if slow tests should not run, otherwise returns `true` and
/// also creates a file at `./target/.slow_tests_cookie` which serves as a flag
/// that slow tests did run.