mirror of
https://github.com/rust-lang/rust-analyzer
synced 2024-12-25 12:33:33 +00:00
Move fixtures to a separate file
This commit is contained in:
Aleksey Kladov
parent
0c12c4f960
commit
f304874c8c
2 changed files with 292 additions and 288 deletions
288
crates/test_utils/src/fixture.rs
Normal file
288
crates/test_utils/src/fixture.rs
Normal file
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@ -0,0 +1,288 @@
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use ra_cfg::CfgOptions;
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use rustc_hash::FxHashMap;
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use stdx::split1;
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#[derive(Debug, Eq, PartialEq)]
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pub struct FixtureEntry {
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pub meta: FixtureMeta,
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pub text: String,
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}
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#[derive(Debug, Eq, PartialEq)]
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pub enum FixtureMeta {
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Root { path: String },
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File(FileMeta),
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}
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#[derive(Debug, Eq, PartialEq)]
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pub struct FileMeta {
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pub path: String,
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pub crate_name: Option<String>,
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pub deps: Vec<String>,
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pub cfg: CfgOptions,
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pub edition: Option<String>,
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pub env: FxHashMap<String, String>,
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}
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impl FixtureMeta {
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pub fn path(&self) -> &str {
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match self {
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FixtureMeta::Root { path } => &path,
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FixtureMeta::File(f) => &f.path,
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}
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}
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pub fn crate_name(&self) -> Option<&String> {
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match self {
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FixtureMeta::File(f) => f.crate_name.as_ref(),
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_ => None,
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}
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}
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pub fn cfg_options(&self) -> Option<&CfgOptions> {
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match self {
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FixtureMeta::File(f) => Some(&f.cfg),
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_ => None,
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}
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}
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pub fn edition(&self) -> Option<&String> {
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match self {
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FixtureMeta::File(f) => f.edition.as_ref(),
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_ => None,
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}
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}
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pub fn env(&self) -> impl Iterator<Item = (&String, &String)> {
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struct EnvIter<'a> {
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iter: Option<std::collections::hash_map::Iter<'a, String, String>>,
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}
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impl<'a> EnvIter<'a> {
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fn new(meta: &'a FixtureMeta) -> Self {
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Self {
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iter: match meta {
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FixtureMeta::File(f) => Some(f.env.iter()),
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_ => None,
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},
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}
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}
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}
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impl<'a> Iterator for EnvIter<'a> {
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type Item = (&'a String, &'a String);
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fn next(&mut self) -> Option<Self::Item> {
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self.iter.as_mut().and_then(|i| i.next())
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}
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}
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EnvIter::new(self)
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}
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}
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/// Same as `parse_fixture`, except it allow empty fixture
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pub fn parse_single_fixture(ra_fixture: &str) -> Option<FixtureEntry> {
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if !ra_fixture.lines().any(|it| it.trim_start().starts_with("//-")) {
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return None;
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}
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let fixtures = parse_fixture(ra_fixture);
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if fixtures.len() > 1 {
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panic!("too many fixtures");
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}
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fixtures.into_iter().nth(0)
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}
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/// Parses text which looks like this:
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///
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/// ```not_rust
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/// //- some meta
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/// line 1
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/// line 2
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/// // - other meta
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/// ```
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pub fn parse_fixture(ra_fixture: &str) -> Vec<FixtureEntry> {
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let fixture = indent_first_line(ra_fixture);
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let margin = fixture_margin(&fixture);
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let mut lines = fixture
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.split('\n') // don't use `.lines` to not drop `\r\n`
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.enumerate()
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.filter_map(|(ix, line)| {
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if line.len() >= margin {
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assert!(line[..margin].trim().is_empty());
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let line_content = &line[margin..];
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if !line_content.starts_with("//-") {
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assert!(
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!line_content.contains("//-"),
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r#"Metadata line {} has invalid indentation. All metadata lines need to have the same indentation.
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The offending line: {:?}"#,
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ix,
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line
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);
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}
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Some(line_content)
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} else {
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assert!(line.trim().is_empty());
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None
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}
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});
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let mut res: Vec<FixtureEntry> = Vec::new();
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for line in lines.by_ref() {
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if line.starts_with("//-") {
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let meta = line["//-".len()..].trim().to_string();
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let meta = parse_meta(&meta);
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res.push(FixtureEntry { meta, text: String::new() })
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} else if let Some(entry) = res.last_mut() {
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entry.text.push_str(line);
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entry.text.push('\n');
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}
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}
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res
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}
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//- /lib.rs crate:foo deps:bar,baz cfg:foo=a,bar=b env:OUTDIR=path/to,OTHER=foo
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fn parse_meta(meta: &str) -> FixtureMeta {
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let components = meta.split_ascii_whitespace().collect::<Vec<_>>();
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if components[0] == "root" {
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let path = components[1].to_string();
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assert!(path.starts_with("/") && path.ends_with("/"));
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return FixtureMeta::Root { path };
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}
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let path = components[0].to_string();
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assert!(path.starts_with("/"));
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let mut krate = None;
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let mut deps = Vec::new();
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let mut edition = None;
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let mut cfg = CfgOptions::default();
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let mut env = FxHashMap::default();
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for component in components[1..].iter() {
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let (key, value) = split1(component, ':').unwrap();
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match key {
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"crate" => krate = Some(value.to_string()),
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"deps" => deps = value.split(',').map(|it| it.to_string()).collect(),
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"edition" => edition = Some(value.to_string()),
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"cfg" => {
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for key in value.split(',') {
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match split1(key, '=') {
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None => cfg.insert_atom(key.into()),
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Some((k, v)) => cfg.insert_key_value(k.into(), v.into()),
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}
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}
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}
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"env" => {
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for key in value.split(',') {
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if let Some((k, v)) = split1(key, '=') {
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env.insert(k.into(), v.into());
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}
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}
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}
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_ => panic!("bad component: {:?}", component),
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}
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}
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FixtureMeta::File(FileMeta { path, crate_name: krate, deps, edition, cfg, env })
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}
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/// Adjusts the indentation of the first line to the minimum indentation of the rest of the lines.
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/// This allows fixtures to start off in a different indentation, e.g. to align the first line with
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/// the other lines visually:
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/// ```
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/// let fixture = "//- /lib.rs
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/// mod foo;
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/// //- /foo.rs
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/// fn bar() {}
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/// ";
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/// assert_eq!(fixture_margin(fixture),
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/// " //- /lib.rs
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/// mod foo;
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/// //- /foo.rs
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/// fn bar() {}
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/// ")
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/// ```
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fn indent_first_line(fixture: &str) -> String {
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if fixture.is_empty() {
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return String::new();
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}
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let mut lines = fixture.lines();
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let first_line = lines.next().unwrap();
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if first_line.contains("//-") {
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let rest = lines.collect::<Vec<_>>().join("\n");
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let fixed_margin = fixture_margin(&rest);
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let fixed_indent = fixed_margin - indent_len(first_line);
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format!("\n{}{}\n{}", " ".repeat(fixed_indent), first_line, rest)
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} else {
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fixture.to_owned()
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}
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}
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fn fixture_margin(fixture: &str) -> usize {
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fixture
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.lines()
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.filter(|it| it.trim_start().starts_with("//-"))
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.map(indent_len)
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.next()
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.expect("empty fixture")
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}
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fn indent_len(s: &str) -> usize {
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s.len() - s.trim_start().len()
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}
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#[test]
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#[should_panic]
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fn parse_fixture_checks_further_indented_metadata() {
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parse_fixture(
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r"
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//- /lib.rs
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mod bar;
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fn foo() {}
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//- /bar.rs
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pub fn baz() {}
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",
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);
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}
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#[test]
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fn parse_fixture_can_handle_dedented_first_line() {
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let fixture = "//- /lib.rs
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mod foo;
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//- /foo.rs
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struct Bar;
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";
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assert_eq!(
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parse_fixture(fixture),
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parse_fixture(
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"//- /lib.rs
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mod foo;
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//- /foo.rs
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struct Bar;
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"
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)
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)
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}
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#[test]
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fn parse_fixture_gets_full_meta() {
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let parsed = parse_fixture(
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r"
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//- /lib.rs crate:foo deps:bar,baz cfg:foo=a,bar=b,atom env:OUTDIR=path/to,OTHER=foo
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mod m;
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",
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);
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assert_eq!(1, parsed.len());
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let parsed = &parsed[0];
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assert_eq!("mod m;\n\n", parsed.text);
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let meta = &parsed.meta;
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assert_eq!("foo", meta.crate_name().unwrap());
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assert_eq!("/lib.rs", meta.path());
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assert!(meta.cfg_options().is_some());
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assert_eq!(2, meta.env().count());
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}
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@ -8,6 +8,7 @@
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#[macro_use]
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pub mod mark;
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mod fixture;
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use std::{
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env, fs,
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@ -15,13 +16,13 @@ use std::{
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};
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use serde_json::Value;
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use stdx::split1;
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use text_size::{TextRange, TextSize};
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pub use difference::Changeset as __Changeset;
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pub use ra_cfg::CfgOptions;
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pub use rustc_hash::FxHashMap;
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pub use difference::Changeset as __Changeset;
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pub use crate::fixture::{parse_fixture, parse_single_fixture, FixtureEntry, FixtureMeta};
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pub const CURSOR_MARKER: &str = "<|>";
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@ -97,7 +98,7 @@ impl From<RangeOrOffset> for TextRange {
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fn from(selection: RangeOrOffset) -> Self {
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match selection {
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RangeOrOffset::Range(it) => it,
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RangeOrOffset::Offset(it) => TextRange::new(it, it),
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RangeOrOffset::Offset(it) => TextRange::empty(it),
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}
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}
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}
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@ -159,291 +160,6 @@ pub fn add_cursor(text: &str, offset: TextSize) -> String {
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res
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}
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#[derive(Debug, Eq, PartialEq)]
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pub struct FixtureEntry {
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pub meta: FixtureMeta,
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pub text: String,
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}
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#[derive(Debug, Eq, PartialEq)]
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pub enum FixtureMeta {
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Root { path: String },
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File(FileMeta),
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}
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#[derive(Debug, Eq, PartialEq)]
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pub struct FileMeta {
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pub path: String,
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pub crate_name: Option<String>,
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pub deps: Vec<String>,
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pub cfg: CfgOptions,
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pub edition: Option<String>,
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pub env: FxHashMap<String, String>,
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}
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impl FixtureMeta {
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pub fn path(&self) -> &str {
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match self {
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FixtureMeta::Root { path } => &path,
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FixtureMeta::File(f) => &f.path,
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}
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}
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pub fn crate_name(&self) -> Option<&String> {
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match self {
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FixtureMeta::File(f) => f.crate_name.as_ref(),
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_ => None,
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}
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}
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pub fn cfg_options(&self) -> Option<&CfgOptions> {
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match self {
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FixtureMeta::File(f) => Some(&f.cfg),
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_ => None,
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}
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}
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pub fn edition(&self) -> Option<&String> {
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match self {
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FixtureMeta::File(f) => f.edition.as_ref(),
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_ => None,
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}
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}
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pub fn env(&self) -> impl Iterator<Item = (&String, &String)> {
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struct EnvIter<'a> {
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iter: Option<std::collections::hash_map::Iter<'a, String, String>>,
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}
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impl<'a> EnvIter<'a> {
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fn new(meta: &'a FixtureMeta) -> Self {
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Self {
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iter: match meta {
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FixtureMeta::File(f) => Some(f.env.iter()),
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_ => None,
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},
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}
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}
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}
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impl<'a> Iterator for EnvIter<'a> {
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type Item = (&'a String, &'a String);
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fn next(&mut self) -> Option<Self::Item> {
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self.iter.as_mut().and_then(|i| i.next())
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}
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}
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EnvIter::new(self)
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}
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}
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|
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/// Parses text which looks like this:
|
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///
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/// ```not_rust
|
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/// //- some meta
|
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/// line 1
|
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/// line 2
|
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/// // - other meta
|
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/// ```
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pub fn parse_fixture(ra_fixture: &str) -> Vec<FixtureEntry> {
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let fixture = indent_first_line(ra_fixture);
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let margin = fixture_margin(&fixture);
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|
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let mut lines = fixture
|
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.split('\n') // don't use `.lines` to not drop `\r\n`
|
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.enumerate()
|
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.filter_map(|(ix, line)| {
|
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if line.len() >= margin {
|
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assert!(line[..margin].trim().is_empty());
|
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let line_content = &line[margin..];
|
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if !line_content.starts_with("//-") {
|
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assert!(
|
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!line_content.contains("//-"),
|
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r#"Metadata line {} has invalid indentation. All metadata lines need to have the same indentation.
|
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The offending line: {:?}"#,
|
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ix,
|
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line
|
||||
);
|
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}
|
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Some(line_content)
|
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} else {
|
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assert!(line.trim().is_empty());
|
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None
|
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}
|
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});
|
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|
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let mut res: Vec<FixtureEntry> = Vec::new();
|
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for line in lines.by_ref() {
|
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if line.starts_with("//-") {
|
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let meta = line["//-".len()..].trim().to_string();
|
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let meta = parse_meta(&meta);
|
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res.push(FixtureEntry { meta, text: String::new() })
|
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} else if let Some(entry) = res.last_mut() {
|
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entry.text.push_str(line);
|
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entry.text.push('\n');
|
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}
|
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}
|
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res
|
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}
|
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|
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//- /lib.rs crate:foo deps:bar,baz cfg:foo=a,bar=b env:OUTDIR=path/to,OTHER=foo
|
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fn parse_meta(meta: &str) -> FixtureMeta {
|
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let components = meta.split_ascii_whitespace().collect::<Vec<_>>();
|
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|
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if components[0] == "root" {
|
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let path = components[1].to_string();
|
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assert!(path.starts_with("/") && path.ends_with("/"));
|
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return FixtureMeta::Root { path };
|
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}
|
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|
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let path = components[0].to_string();
|
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assert!(path.starts_with("/"));
|
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|
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let mut krate = None;
|
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let mut deps = Vec::new();
|
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let mut edition = None;
|
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let mut cfg = CfgOptions::default();
|
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let mut env = FxHashMap::default();
|
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for component in components[1..].iter() {
|
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let (key, value) = split1(component, ':').unwrap();
|
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match key {
|
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"crate" => krate = Some(value.to_string()),
|
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"deps" => deps = value.split(',').map(|it| it.to_string()).collect(),
|
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"edition" => edition = Some(value.to_string()),
|
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"cfg" => {
|
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for key in value.split(',') {
|
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match split1(key, '=') {
|
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None => cfg.insert_atom(key.into()),
|
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Some((k, v)) => cfg.insert_key_value(k.into(), v.into()),
|
||||
}
|
||||
}
|
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}
|
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"env" => {
|
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for key in value.split(',') {
|
||||
if let Some((k, v)) = split1(key, '=') {
|
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env.insert(k.into(), v.into());
|
||||
}
|
||||
}
|
||||
}
|
||||
_ => panic!("bad component: {:?}", component),
|
||||
}
|
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}
|
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|
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FixtureMeta::File(FileMeta { path, crate_name: krate, deps, edition, cfg, env })
|
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}
|
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|
||||
/// Adjusts the indentation of the first line to the minimum indentation of the rest of the lines.
|
||||
/// This allows fixtures to start off in a different indentation, e.g. to align the first line with
|
||||
/// the other lines visually:
|
||||
/// ```
|
||||
/// let fixture = "//- /lib.rs
|
||||
/// mod foo;
|
||||
/// //- /foo.rs
|
||||
/// fn bar() {}
|
||||
/// ";
|
||||
/// assert_eq!(fixture_margin(fixture),
|
||||
/// " //- /lib.rs
|
||||
/// mod foo;
|
||||
/// //- /foo.rs
|
||||
/// fn bar() {}
|
||||
/// ")
|
||||
/// ```
|
||||
fn indent_first_line(fixture: &str) -> String {
|
||||
if fixture.is_empty() {
|
||||
return String::new();
|
||||
}
|
||||
let mut lines = fixture.lines();
|
||||
let first_line = lines.next().unwrap();
|
||||
if first_line.contains("//-") {
|
||||
let rest = lines.collect::<Vec<_>>().join("\n");
|
||||
let fixed_margin = fixture_margin(&rest);
|
||||
let fixed_indent = fixed_margin - indent_len(first_line);
|
||||
format!("\n{}{}\n{}", " ".repeat(fixed_indent), first_line, rest)
|
||||
} else {
|
||||
fixture.to_owned()
|
||||
}
|
||||
}
|
||||
|
||||
fn fixture_margin(fixture: &str) -> usize {
|
||||
fixture
|
||||
.lines()
|
||||
.filter(|it| it.trim_start().starts_with("//-"))
|
||||
.map(indent_len)
|
||||
.next()
|
||||
.expect("empty fixture")
|
||||
}
|
||||
|
||||
fn indent_len(s: &str) -> usize {
|
||||
s.len() - s.trim_start().len()
|
||||
}
|
||||
|
||||
#[test]
|
||||
#[should_panic]
|
||||
fn parse_fixture_checks_further_indented_metadata() {
|
||||
parse_fixture(
|
||||
r"
|
||||
//- /lib.rs
|
||||
mod bar;
|
||||
|
||||
fn foo() {}
|
||||
//- /bar.rs
|
||||
pub fn baz() {}
|
||||
",
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_fixture_can_handle_dedented_first_line() {
|
||||
let fixture = "//- /lib.rs
|
||||
mod foo;
|
||||
//- /foo.rs
|
||||
struct Bar;
|
||||
";
|
||||
assert_eq!(
|
||||
parse_fixture(fixture),
|
||||
parse_fixture(
|
||||
"//- /lib.rs
|
||||
mod foo;
|
||||
//- /foo.rs
|
||||
struct Bar;
|
||||
"
|
||||
)
|
||||
)
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_fixture_gets_full_meta() {
|
||||
let parsed = parse_fixture(
|
||||
r"
|
||||
//- /lib.rs crate:foo deps:bar,baz cfg:foo=a,bar=b,atom env:OUTDIR=path/to,OTHER=foo
|
||||
mod m;
|
||||
",
|
||||
);
|
||||
assert_eq!(1, parsed.len());
|
||||
|
||||
let parsed = &parsed[0];
|
||||
assert_eq!("mod m;\n\n", parsed.text);
|
||||
|
||||
let meta = &parsed.meta;
|
||||
assert_eq!("foo", meta.crate_name().unwrap());
|
||||
assert_eq!("/lib.rs", meta.path());
|
||||
assert!(meta.cfg_options().is_some());
|
||||
assert_eq!(2, meta.env().count());
|
||||
}
|
||||
|
||||
/// Same as `parse_fixture`, except it allow empty fixture
|
||||
pub fn parse_single_fixture(ra_fixture: &str) -> Option<FixtureEntry> {
|
||||
if !ra_fixture.lines().any(|it| it.trim_start().starts_with("//-")) {
|
||||
return None;
|
||||
}
|
||||
|
||||
let fixtures = parse_fixture(ra_fixture);
|
||||
if fixtures.len() > 1 {
|
||||
panic!("too many fixtures");
|
||||
}
|
||||
fixtures.into_iter().nth(0)
|
||||
}
|
||||
|
||||
// Comparison functionality borrowed from cargo:
|
||||
|
||||
/// Compare a line with an expected pattern.
|
||||
|
|
|
|||
Loading…
Reference in a new issue