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//! Tests for loading errors.
//!
//! Note that all the tests in this module are `#[ignore]`. This is because they
//! take a much longer time to run than normal tests, as they depend upon actually
//! hitting the limits in librsvg for the number of loaded elements, or the number
//! of referenced elements during rendering.
//!
//! There is a *big* difference in the run-time of these tests when compiled with
//! `--release` versus `--debug`. So, we will only run them in release-mode tests.
#![cfg(test)]
use cairo;
use librsvg::{CairoRenderer, ImplementationLimit, Loader, LoadingError, RenderingError};
#[ignore]
#[test]
fn too_many_elements() {
let name = "tests/fixtures/errors/515-too-many-elements.svgz";
assert!(matches!(
Loader::new().read_path(name),
Err(LoadingError::LimitExceeded(
ImplementationLimit::TooManyLoadedElements
))
));
}
fn rendering_instancing_limit(name: &str) {
let handle = Loader::new()
.read_path(name)
.unwrap_or_else(|e| panic!("could not load: {}", e));
let surface = cairo::ImageSurface::create(cairo::Format::ARgb32, 500, 500).unwrap();
let cr = cairo::Context::new(&surface).expect("Failed to create a cairo context");
// Note that at least 515-patttern-billion-laughs.svg requires a viewport of this size
// or bigger; a smaller one causes the recursive patterns to get so small that they
// are culled out, and so the document doesn't reach the instancing limit.
match CairoRenderer::new(&handle)
.render_document(&cr, &cairo::Rectangle::new(0.0, 0.0, 500.0, 500.0))
{
Ok(_) => (),
Err(RenderingError::LimitExceeded(ImplementationLimit::TooManyReferencedElements)) => (),
_ => panic!("unexpected error code"),
}
}
#[ignore]
#[test]
fn instancing_limit1() {
rendering_instancing_limit("tests/fixtures/errors/323-nested-use.svg");
}
#[ignore]
#[test]
fn instancing_limit2() {
rendering_instancing_limit("tests/fixtures/errors/515-pattern-billion-laughs.svg");
}
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