tests: Add `NavigatorTestBackend`

Cargo.lock

@@ -4175,6 +4175,7 @@ dependencies = [
  "ruffle_video_software",
  "serde",
  "toml 0.5.11",
+ "url",
  "walkdir",
 ]
 

tests/Cargo.toml

@@ -16,6 +16,7 @@ ruffle_input_format = { path = "input-format" }
 ruffle_video_software = { path = "../video/software", optional = true }
 image = { version = "0.24.5", default-features = false, features = ["png"] }
 regex = "1.7.1"
+url = "2.3.1"
 
 [features]
 # Enable running image comparison tests. This is off by default,

tests/tests/util/mod.rs

@@ -2,6 +2,7 @@
 // https://doc.rust-lang.org/book/ch11-03-test-organization.html
 
 pub mod environment;
+pub mod navigator;
 pub mod options;
 pub mod runner;
 pub mod test;

tests/tests/util/navigator.rs

@@ -0,0 +1,58 @@
+use ruffle_core::backend::navigator::{
+    NavigationMethod, NavigatorBackend, NullExecutor, NullSpawner, OwnedFuture, Request, Response,
+};
+use ruffle_core::indexmap::IndexMap;
+use ruffle_core::loader::Error;
+use std::path::{Path, PathBuf};
+use url::Url;
+
+pub struct NavigatorTestBackend {
+    spawner: NullSpawner,
+    relative_base_path: PathBuf,
+}
+
+impl NavigatorTestBackend {
+    pub fn with_base_path(path: &Path, executor: &NullExecutor) -> Result<Self, std::io::Error> {
+        Ok(Self {
+            spawner: executor.spawner(),
+            relative_base_path: path.canonicalize()?,
+        })
+    }
+
+    fn url_from_file_path(path: &Path) -> Result<Url, ()> {
+        Url::from_file_path(path)
+    }
+}
+
+impl NavigatorBackend for NavigatorTestBackend {
+    fn navigate_to_url(
+        &self,
+        _url: String,
+        _target: String,
+        _vars_method: Option<(NavigationMethod, IndexMap<String, String>)>,
+    ) {
+    }
+
+    fn fetch(&self, request: Request) -> OwnedFuture<Response, Error> {
+        let mut path = self.relative_base_path.clone();
+        path.push(request.url());
+
+        Box::pin(async move {
+            let url = Self::url_from_file_path(&path)
+                .map_err(|()| Error::FetchError("Invalid URL".to_string()))?
+                .into();
+
+            let body = std::fs::read(path).map_err(|e| Error::FetchError(e.to_string()))?;
+
+            Ok(Response { url, body })
+        })
+    }
+
+    fn spawn_future(&mut self, future: OwnedFuture<(), Error>) {
+        //self.spawner.spawn_local(future);
+    }
+
+    fn pre_process_url(&self, url: Url) -> Url {
+        url
+    }
+}

tests/tests/util/runner.rs

@@ -1,3 +1,4 @@
+use crate::util::navigator::NavigatorTestBackend;
 use crate::util::test::Test;
 use anyhow::{anyhow, Result};
 use ruffle_core::backend::audio::{
@@ -5,7 +6,7 @@ use ruffle_core::backend::audio::{
     SoundTransform,
 };
 use ruffle_core::backend::log::LogBackend;
-use ruffle_core::backend::navigator::{NullExecutor, NullNavigatorBackend};
+use ruffle_core::backend::navigator::NullExecutor;
 use ruffle_core::events::KeyCode;
 use ruffle_core::events::MouseButton as RuffleMouseButton;
 use ruffle_core::impl_audio_mixer_backend;
@@ -84,7 +85,7 @@ pub fn run_swf(
 
     let builder = PlayerBuilder::new()
         .with_log(TestLogBackend::new(trace_output.clone()))
-        .with_navigator(NullNavigatorBackend::with_base_path(base_path, &executor)?)
+        .with_navigator(NavigatorTestBackend::with_base_path(base_path, &executor)?)
         .with_max_execution_duration(Duration::from_secs(300))
         .with_viewport_dimensions(
             movie.width().to_pixels() as u32,