Skip to content

tests: load JSON fixtures at runtime for crates.io archives #444

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
rome-xi wants to merge 4 commits into
base: main
Choose a base branch
from
Open

tests: load JSON fixtures at runtime for crates.io archives #444

Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
147ef3e
tests: load JSON fixtures at runtime for crates.io archives
rome-xi Aug 24, 2026
1f7943e
style: cargo fmt
rome-xi Aug 25, 2026
07c058c
style: cargo fmt
rome-xi Aug 25, 2026
6ab3796
test: skip JSON fixture tests under miri isolation
rome-xi Aug 28, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
68 changes: 43 additions & 25 deletions src/tests.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,18 @@ use super::{
ToCss, Token, TokenSerializationType, UnicodeRange,
};

fn css_parsing_test_json(file_name: &str) -> String {
// Fixtures are Cargo.toml `exclude`d so crates.io packages can compile tests
// without include_str!. Miri isolation cannot open() them; those tests are
// #[cfg_attr(miri, ignore)].
let path = format!(
"{}/src/css-parsing-tests/{}",
env!("CARGO_MANIFEST_DIR"),
file_name
);
std::fs::read_to_string(&path).unwrap()
}

macro_rules! JArray {
($($e: expr,)*) => { JArray![ $( $e ),* ] };
($($e: expr),*) => { Value::Array(vec!( $( $e.to_json() ),* )) }
Expand Down Expand Up @@ -105,18 +117,20 @@ fn run_json_tests<F: Fn(&mut Parser) -> Value>(json_data: &str, parse: F) {
});
}

#[cfg_attr(miri, ignore)]
#[test]
fn component_value_list() {
run_json_tests(
include_str!("css-parsing-tests/component_value_list.json"),
&css_parsing_test_json("component_value_list.json"),
|input| Value::Array(component_values_to_json(input)),
);
}

#[cfg_attr(miri, ignore)]
#[test]
fn one_component_value() {
run_json_tests(
include_str!("css-parsing-tests/one_component_value.json"),
&css_parsing_test_json("one_component_value.json"),
|input| {
let result: Result<Value, ParseError<()>> = input.parse_entirely(|input| {
Ok(one_component_value_to_json(input.next()?.clone(), input))
Expand All @@ -126,33 +140,30 @@ fn one_component_value() {
);
}

#[cfg_attr(miri, ignore)]
#[test]
fn declaration_list() {
run_json_tests(
include_str!("css-parsing-tests/declaration_list.json"),
|input| {
Value::Array(
RuleBodyParser::new(input, &mut JsonParser)
.map(|result| result.unwrap_or(JArray!["error", "invalid"]))
.collect(),
)
},
);
run_json_tests(&css_parsing_test_json("declaration_list.json"), |input| {
Value::Array(
RuleBodyParser::new(input, &mut JsonParser)
.map(|result| result.unwrap_or(JArray!["error", "invalid"]))
.collect(),
)
});
}

#[cfg_attr(miri, ignore)]
#[test]
fn one_declaration() {
run_json_tests(
include_str!("css-parsing-tests/one_declaration.json"),
|input| {
parse_one_declaration(input, &mut JsonParser).unwrap_or(JArray!["error", "invalid"])
},
);
run_json_tests(&css_parsing_test_json("one_declaration.json"), |input| {
parse_one_declaration(input, &mut JsonParser).unwrap_or(JArray!["error", "invalid"])
});
}

#[cfg_attr(miri, ignore)]
#[test]
fn rule_list() {
run_json_tests(include_str!("css-parsing-tests/rule_list.json"), |input| {
run_json_tests(&css_parsing_test_json("rule_list.json"), |input| {
Value::Array(
RuleBodyParser::new(input, &mut JsonParser)
.map(|result| result.unwrap_or(JArray!["error", "invalid"]))
Expand All @@ -161,9 +172,10 @@ fn rule_list() {
});
}

#[cfg_attr(miri, ignore)]
#[test]
fn stylesheet() {
run_json_tests(include_str!("css-parsing-tests/stylesheet.json"), |input| {
run_json_tests(&css_parsing_test_json("stylesheet.json"), |input| {
Value::Array(
StyleSheetParser::new(input, &mut JsonParser)
.map(|result| result.unwrap_or(JArray!["error", "invalid"]))
Expand All @@ -172,13 +184,15 @@ fn stylesheet() {
});
}

#[cfg_attr(miri, ignore)]
#[test]
fn one_rule() {
run_json_tests(include_str!("css-parsing-tests/one_rule.json"), |input| {
run_json_tests(&css_parsing_test_json("one_rule.json"), |input| {
parse_one_rule(input, &mut JsonParser).unwrap_or(JArray!["error", "invalid"])
});
}

#[cfg_attr(miri, ignore)]
#[test]
fn stylesheet_from_bytes() {
pub struct EncodingRs;
Expand All @@ -200,7 +214,7 @@ fn stylesheet_from_bytes() {
}

run_raw_json_tests(
include_str!("css-parsing-tests/stylesheet_bytes.json"),
&css_parsing_test_json("stylesheet_bytes.json"),
|input, expected| {
let map = match input {
Value::Object(map) => map,
Expand Down Expand Up @@ -352,9 +366,10 @@ fn test_expect_url() {
assert!(parse(&mut input).is_err());
}

#[cfg_attr(miri, ignore)]
#[test]
fn nth() {
run_json_tests(include_str!("css-parsing-tests/An+B.json"), |input| {
run_json_tests(&css_parsing_test_json("An+B.json"), |input| {
input
.parse_entirely(|i| {
let result: Result<_, ParseError<()>> = parse_nth(i).map_err(Into::into);
Expand All @@ -381,9 +396,10 @@ fn parse_comma_separated_ignoring_errors() {
assert_eq!(result[2], (0, 0, 255));
}

#[cfg_attr(miri, ignore)]
#[test]
fn unicode_range() {
run_json_tests(include_str!("css-parsing-tests/urange.json"), |input| {
run_json_tests(&css_parsing_test_json("urange.json"), |input| {
let result: Result<_, ParseError<()>> = input.parse_comma_separated(|input| {
let result = UnicodeRange::parse(input).ok().map(|r| (r.start, r.end));
if input.is_exhausted() {
Expand All @@ -408,19 +424,21 @@ fn unicode_range() {
});
}

#[cfg_attr(miri, ignore)]
#[test]
fn serializer_not_preserving_comments() {
serializer(false)
}

#[cfg_attr(miri, ignore)]
#[test]
fn serializer_preserving_comments() {
serializer(true)
}

fn serializer(preserve_comments: bool) {
run_json_tests(
include_str!("css-parsing-tests/component_value_list.json"),
&css_parsing_test_json("component_value_list.json"),
|input| {
fn write_to(
mut previous_token: TokenSerializationType,
Expand Down