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//! Tests for loading errors.
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//!
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//! Note that all the tests in this module are `#[ignore]`.  This is because they
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//! take a much longer time to run than normal tests, as they depend upon actually
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//! hitting the limits in librsvg for the number of loaded elements, or the number
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//! of referenced elements during rendering.
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//!
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//! There is a *big* difference in the run-time of these tests when compiled with
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//! `--release` versus `--debug`.  So, we will only run them in release-mode tests.
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#![cfg(test)]

            

        

            

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use rsvg::{CairoRenderer, ImplementationLimit, Loader, LoadingError, RenderingError};

            

        

            

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#[ignore]

            

        

            

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#[test]

            

        

            

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fn too_many_elements() {

            

        

            

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    let name = "tests/fixtures/errors/bug515-too-many-elements.svgz";

            

        

            

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    assert!(matches!(

            

        

            

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        Loader::new().read_path(name),

            

        

            

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        Err(LoadingError::LimitExceeded(

            

        

            

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            ImplementationLimit::TooManyLoadedElements

            

        

            

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        ))

            

        

            

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    ));

            

        

            

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}

            

        

            

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fn rendering_instancing_limit(name: &str) {

            

        

            

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    let handle = Loader::new()

            

        

            

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        .read_path(name)

            

        

            

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        .unwrap_or_else(|e| panic!("could not load: {}", e));

            

        

            

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    let surface = cairo::ImageSurface::create(cairo::Format::ARgb32, 500, 500).unwrap();

            

        

            

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    let cr = cairo::Context::new(&surface).expect("Failed to create a cairo context");

            

        

            

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    // Note that at least 515-patttern-billion-laughs.svg requires a viewport of this size

            

        

            

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    // or bigger; a smaller one causes the recursive patterns to get so small that they

            

        

            

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    // are culled out, and so the document doesn't reach the instancing limit.

            

        

            

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    match CairoRenderer::new(&handle)

            

        

            

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        .render_document(&cr, &cairo::Rectangle::new(0.0, 0.0, 500.0, 500.0))

            

        

            

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    {

            

        

            

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        Ok(_) => (),

            

        

            

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        Err(RenderingError::LimitExceeded(ImplementationLimit::TooManyReferencedElements)) => (),

            

        

            

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        _ => panic!("unexpected error code"),

            

        

            

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    }

            

        

            

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}

            

        

            

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#[ignore]

            

        

            

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#[test]

            

        

            

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fn instancing_limit1() {

            

        

            

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    rendering_instancing_limit("tests/fixtures/errors/bug323-nested-use.svg");

            

        

            

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}

            

        

            

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#[ignore]

            

        

            

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#[test]

            

        

            

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fn instancing_limit2() {

            

        

            

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    rendering_instancing_limit("tests/fixtures/errors/bug515-pattern-billion-laughs.svg");

            

        

            

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}