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use std::collections::BTreeMap;
use std::process::{Command, Stdio};
use std::sync::mpsc::channel;
use std::sync::{Mutex, Arc};
use std::time::Duration;
use std::thread;
use std::time::Instant;
use std::io::{BufRead, BufReader};
use std::net::SocketAddr;
use std::ffi::OsStr;
use std::path::Path;
use hyper::StatusCode;
use tempfile;
use handlebars::Handlebars;
use serde_json::{self, Value};
use regex::Regex;
use cargo_shim::CargoResult;
use build::Backend;
use error::Error;
use utils::{
read,
read_bytes,
find_cmd,
};
use http_utils::{
SimpleServer,
response_from_status,
response_from_data
};
use chrome_devtools::{Connection, Reply, ReplyError, ConsoleApiCalledBody, ExceptionThrownBody};
use cmd_test::TEST_RUNNER;
const DEFAULT_TEST_INDEX_HTML: &'static str = r#"
<!DOCTYPE html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=1" name="viewport" />
<script>
var __cargo_web = {};
var Module = {};
__cargo_web.status = new Promise( function( resolve ) { Module['onExit'] = resolve; } );
__cargo_web.target = "{{{ target }}}";
Module['arguments'] = [{{#each arguments}} "{{{ this }}}", {{/each}}];
</script>
<script src="/__cargo-web__/test_runner.js"></script>
</head>
<body>
<script src="js/app.js"></script>
</body>
</html>
"#;
pub fn test_in_chromium(
backend: Backend,
build: CargoResult,
arg_passthrough: &Vec< &OsStr >,
any_failure: &mut bool
) -> Result< (), Error > {
let possible_commands =
if cfg!( windows ) {
&[ "chrome.exe" ][..]
} else {
&[ "chromium", "chromium-browser", "google-chrome", "google-chrome-stable", "Google Chrome" ][..]
};
let chromium_executable = find_cmd( possible_commands )
.or_else( || {
let path = "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome";
if Path::new( path ).exists() {
Some( path )
} else {
None
}
})
.ok_or_else( || {
Error::EnvironmentError( "you need to have either Chromium or Chrome installed and in your PATH to run the tests!".into() )
})?;
let app_js = Arc::new( Mutex::new( String::new() ) );
let server_app_js = app_js.clone();
let handlebars = Handlebars::new();
let mut template_data: BTreeMap< &str, Value > = BTreeMap::new();
let arg_passthrough: Vec<_> = arg_passthrough.iter().map( |arg| arg.to_str().unwrap() ).collect();
template_data.insert( "arguments", arg_passthrough.into() );
template_data.insert( "target", backend.triplet().into() );
let test_index = handlebars.render_template( DEFAULT_TEST_INDEX_HTML, &template_data ).unwrap();
let app_wasm: Arc< Mutex< Option< Vec< u8 > > > > = Arc::new( Mutex::new( None ) );
let wasm_url = Arc::new( Mutex::new( None ) );
let server_app_wasm = app_wasm.clone();
let server_wasm_url = wasm_url.clone();
let (addr_tx, addr_rx) = channel();
thread::spawn( move || {
let server = SimpleServer::new(&"127.0.0.1:0".parse().unwrap(), move |request| {
let path = request.uri().path();
if path == "/" || path == "index.html" {
response_from_data( &"text/html".parse().unwrap(), test_index.clone().into_bytes() )
} else if path == "/js/app.js" {
let data = server_app_js.lock().unwrap().clone();
response_from_data( &"application/javascript".parse().unwrap(), data.into_bytes() )
} else if path == "/__cargo-web__/test_runner.js" {
response_from_data(
&"application/javascript".parse().unwrap(),
TEST_RUNNER.as_bytes().to_vec() )
} else {
match *server_wasm_url.lock().unwrap() {
Some( ref server_wasm_url ) if path == *server_wasm_url => {
let data = server_app_wasm.lock().unwrap().as_ref().unwrap().clone();
response_from_data( &"application/wasm".parse().unwrap(), data )
},
_ => response_from_status(StatusCode::NOT_FOUND)
}
}
});
addr_tx.send(server.server_addr()).unwrap();
server.run();
});
let server_address: SocketAddr = addr_rx.recv().unwrap();
let artifact = build.artifacts().iter()
.find( |artifact| artifact.extension().map( |ext| ext == "js" ).unwrap_or( false ) )
.expect( "internal error: no .js file found" );
if backend.is_any_wasm() {
let wasm_artifact = build.artifacts().iter()
.find( |artifact| artifact.extension().map( |ext| ext == "wasm" ).unwrap_or( false ) )
.expect( "internal error: no .wasm file found" );
*wasm_url.lock().unwrap() = Some( format!( "/{}", wasm_artifact.file_name().unwrap().to_str().unwrap() ) );
*app_wasm.lock().unwrap() = Some( read_bytes( wasm_artifact ).unwrap() );
}
*app_js.lock().unwrap() = read( artifact ).unwrap();
let tmpdir = tempfile::Builder::new().prefix( "cargo-web-chromium-profile" ).tempdir().unwrap();
let tmpdir = tmpdir.path().to_string_lossy();
let mut command = Command::new( chromium_executable );
command
.arg( "--disable-gpu" )
.arg( "--no-first-run" )
.arg( "--no-sandbox" )
.arg( "--disable-restore-session-state" )
.arg( "--no-default-browser-check" )
.arg( "--disable-java" )
.arg( "--disable-client-side-phishing-detection" )
.arg( "--headless" )
.arg( "--remote-debugging-port=0" )
.arg( format!( "--user-data-dir={}", tmpdir ) )
.arg( "about:blank" );
command
.stdout( Stdio::null() )
.stderr( Stdio::piped() )
.stdin( Stdio::null() );
debug!( "Launching chromium..." );
let mut child = command.spawn()
.map_err( |err| Error::RuntimeError( "cannot launch chromium".into(), err.into() ) )?;
let stderr = BufReader::new( child.stderr.take().unwrap() );
let devtools_regex = Regex::new( r"DevTools listening on (ws://[^:]+:\d+)" ).unwrap();
let (url_tx, url_rx) = channel();
thread::spawn( move || {
for line in stderr.lines() {
let line = match line {
Ok( line ) => line,
Err( _ ) => break
};
debug!( "Chromium stderr: {:?}", line );
if let Some( captures ) = devtools_regex.captures( &line ) {
let url = captures.get( 1 ).unwrap().as_str().to_owned();
let _ = url_tx.send( url );
break;
}
}
});
let url = url_rx.recv_timeout( Duration::from_secs( 10 ) )
.map_err( |err| Error::RuntimeError( "timeout while waiting for chromium to start".into(), err.into() ) )?;
debug!( "Chromium in listening on: {}", url );
let mut connection = Connection::connect( &format!( "{}/json", url ) )
.map_err( |err| Error::RuntimeError( "devtools connection to chromium failed".into(), err.into() ) )?;
connection.send_cmd( "Page.enable", Value::Null );
connection.send_cmd( "Runtime.enable", Value::Null );
connection.send_cmd(
"Page.navigate",
json!({
"url": format!( "http://localhost:{}", server_address.port() )
})
);
let mut print_counter = 0;
let mut finished = false;
let start = Instant::now();
let time_limit = Duration::from_secs( 60 );
let mut get_status_req = None;
loop {
let elapsed = start.elapsed();
if elapsed >= time_limit {
break;
}
let remaining = time_limit - elapsed;
let reply = connection.try_recv( Some( remaining ) );
let reply = match reply {
Ok( reply ) => reply,
Err( ReplyError::Timeout ) => {
if finished {
break;
} else {
continue;
}
},
Err( err ) => {
return Err( Error::RuntimeError( "error while communicating with chromium".into(), err.into() ) );
}
};
match reply {
Reply::Result { ref id, ref body } if Some( *id ) == get_status_req => {
finished = true;
let status = body.get( "result" ).unwrap().get( "value" ).unwrap().as_u64().unwrap();
if status != 0 {
eprintln!( "error: process exited with a status of {}", status );
*any_failure = true;
}
break;
},
Reply::Event { ref method, .. } if method == "Page.frameStoppedLoading" => {
let id = connection.send_cmd(
"Runtime.evaluate",
json!({
"expression": "__cargo_web.status",
"awaitPromise": true
})
);
get_status_req = Some( id );
},
Reply::Event { ref method, ref body } if method == "Runtime.exceptionThrown" => {
let body: ExceptionThrownBody = serde_json::from_value( body.clone() ).expect( "Failed to parse `Runtime.exceptionThrown` event" );
eprintln!( "error: unhandled exception thrown" );
if let Some( exception ) = body.exception_details.exception {
if let Some( description ) = exception.description {
eprintln!( "error: {}", description );
}
}
if let Some( url ) = body.exception_details.url {
eprintln!( "error: source: {}:{}:{}", url, body.exception_details.line_number, body.exception_details.column_number );
}
*any_failure = true;
finished = true;
break;
},
Reply::Event { ref method, ref body } if method == "Runtime.consoleAPICalled" => {
let body: ConsoleApiCalledBody = serde_json::from_value( body.clone() ).unwrap();
match body.kind.as_str() {
"log" | "debug" | "info" | "error" | "warning" => {
let mut output = String::new();
for arg in body.args {
if !output.is_empty() {
output.push_str( " " );
}
if arg.kind == "string" {
output.push_str( arg.value.unwrap().as_str().unwrap() );
} else {
output.push_str( "<" );
if let Some( class_name ) = arg.class_name {
output.push_str( &class_name );
} else {
output.push_str( &arg.kind );
}
output.push_str( ">" );
}
}
if backend.is_emscripten() {
if print_counter == 0 && output.starts_with( "pre-main" ) {
continue;
} else if print_counter == 1 && output.trim().is_empty() {
continue;
}
}
println!( "{}", output );
print_counter += 1;
},
_ => {}
}
},
Reply::Error { ref message, .. } => {
return Err( Error::RuntimeError( "chromium returned an error".into(), message.clone().into() ) );
},
_ => {}
}
}
if !finished {
eprintln!( "error: tests timed out!" );
*any_failure = true;
}
debug!( "Testing finished; waiting for chromium to die..." );
child.kill().unwrap();
child.wait().unwrap();
Ok(())
}