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denoland-deno/cli/tools/upgrade.rs

870 lines
26 KiB
Rust

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
//! This module provides feature to upgrade deno executable
use crate::args::Flags;
use crate::args::UpgradeFlags;
use crate::colors;
use crate::http_util::HttpClient;
use crate::proc_state::ProcState;
use crate::util::progress_bar::ProgressBar;
use crate::util::progress_bar::ProgressBarStyle;
use crate::util::time;
use crate::version;
use deno_core::anyhow::bail;
use deno_core::anyhow::Context;
use deno_core::error::AnyError;
use deno_core::futures::future::BoxFuture;
use deno_core::futures::FutureExt;
use deno_graph::semver::Version;
use once_cell::sync::Lazy;
use std::borrow::Cow;
use std::env;
use std::fs;
use std::ops::Sub;
use std::path::Path;
use std::path::PathBuf;
use std::process::Command;
use std::time::Duration;
static ARCHIVE_NAME: Lazy<String> =
Lazy::new(|| format!("deno-{}.zip", env!("TARGET")));
const RELEASE_URL: &str = "https://github.com/denoland/deno/releases";
// How often query server for new version. In hours.
const UPGRADE_CHECK_INTERVAL: i64 = 24;
const UPGRADE_CHECK_FETCH_DELAY: Duration = Duration::from_millis(500);
/// Environment necessary for doing the update checker.
/// An alternate trait implementation can be provided for testing purposes.
trait UpdateCheckerEnvironment: Clone + Send + Sync {
fn latest_version(&self) -> BoxFuture<'static, Result<String, AnyError>>;
fn current_version(&self) -> Cow<str>;
fn read_check_file(&self) -> String;
fn write_check_file(&self, text: &str);
fn current_time(&self) -> chrono::DateTime<chrono::Utc>;
}
#[derive(Clone)]
struct RealUpdateCheckerEnvironment {
http_client: HttpClient,
cache_file_path: PathBuf,
current_time: chrono::DateTime<chrono::Utc>,
}
impl RealUpdateCheckerEnvironment {
pub fn new(http_client: HttpClient, cache_file_path: PathBuf) -> Self {
Self {
http_client,
cache_file_path,
// cache the current time
current_time: time::utc_now(),
}
}
}
impl UpdateCheckerEnvironment for RealUpdateCheckerEnvironment {
fn latest_version(&self) -> BoxFuture<'static, Result<String, AnyError>> {
let http_client = self.http_client.clone();
async move {
if version::is_canary() {
get_latest_canary_version(&http_client).await
} else {
get_latest_release_version(&http_client).await
}
}
.boxed()
}
fn current_version(&self) -> Cow<str> {
Cow::Borrowed(version::release_version_or_canary_commit_hash())
}
fn read_check_file(&self) -> String {
std::fs::read_to_string(&self.cache_file_path).unwrap_or_default()
}
fn write_check_file(&self, text: &str) {
let _ = std::fs::write(&self.cache_file_path, text);
}
fn current_time(&self) -> chrono::DateTime<chrono::Utc> {
self.current_time
}
}
struct UpdateChecker<TEnvironment: UpdateCheckerEnvironment> {
env: TEnvironment,
maybe_file: Option<CheckVersionFile>,
}
impl<TEnvironment: UpdateCheckerEnvironment> UpdateChecker<TEnvironment> {
pub fn new(env: TEnvironment) -> Self {
let maybe_file = CheckVersionFile::parse(env.read_check_file());
Self { env, maybe_file }
}
pub fn should_check_for_new_version(&self) -> bool {
match &self.maybe_file {
Some(file) => {
let last_check_age = self
.env
.current_time()
.signed_duration_since(file.last_checked);
last_check_age > chrono::Duration::hours(UPGRADE_CHECK_INTERVAL)
}
None => true,
}
}
/// Returns the version if a new one is available and it should be prompted about.
pub fn should_prompt(&self) -> Option<String> {
let file = self.maybe_file.as_ref()?;
// If the current version saved is not the actualy current version of the binary
// It means
// - We already check for a new version today
// - The user have probably upgraded today
// So we should not prompt and wait for tomorrow for the latest version to be updated again
if file.current_version != self.env.current_version() {
return None;
}
if file.latest_version == self.env.current_version() {
return None;
}
if let Ok(current) = Version::parse_standard(&self.env.current_version()) {
if let Ok(latest) = Version::parse_standard(&file.latest_version) {
if current >= latest {
return None;
}
}
}
let last_prompt_age = self
.env
.current_time()
.signed_duration_since(file.last_prompt);
if last_prompt_age > chrono::Duration::hours(UPGRADE_CHECK_INTERVAL) {
Some(file.latest_version.clone())
} else {
None
}
}
/// Store that we showed the update message to the user.
pub fn store_prompted(self) {
if let Some(file) = self.maybe_file {
self.env.write_check_file(
&file.with_last_prompt(self.env.current_time()).serialize(),
);
}
}
}
fn get_minor_version(version: &str) -> &str {
version.rsplitn(2, '.').collect::<Vec<&str>>()[1]
}
fn print_release_notes(current_version: &str, new_version: &str) {
if get_minor_version(current_version) != get_minor_version(new_version) {
log::info!(
"{}{}",
"Release notes: https://github.com/denoland/deno/releases/tag/v",
&new_version,
);
log::info!(
"{}{}",
"Blog post: https://deno.com/blog/v",
get_minor_version(new_version)
);
}
}
pub fn check_for_upgrades(http_client: HttpClient, cache_file_path: PathBuf) {
if env::var("DENO_NO_UPDATE_CHECK").is_ok() {
return;
}
let env = RealUpdateCheckerEnvironment::new(http_client, cache_file_path);
let update_checker = UpdateChecker::new(env);
if update_checker.should_check_for_new_version() {
let env = update_checker.env.clone();
// do this asynchronously on a separate task
tokio::spawn(async move {
// Sleep for a small amount of time to not unnecessarily impact startup
// time.
tokio::time::sleep(UPGRADE_CHECK_FETCH_DELAY).await;
fetch_and_store_latest_version(&env).await;
});
}
// Print a message if an update is available
if let Some(upgrade_version) = update_checker.should_prompt() {
if log::log_enabled!(log::Level::Info) && atty::is(atty::Stream::Stderr) {
if version::is_canary() {
eprint!(
"{} ",
colors::green("A new canary release of Deno is available.")
);
eprintln!(
"{}",
colors::italic_gray("Run `deno upgrade --canary` to install it.")
);
} else {
eprint!(
"{} {}{} ",
colors::green("A new release of Deno is available:"),
colors::cyan(version::deno()),
colors::cyan(&upgrade_version)
);
eprintln!(
"{}",
colors::italic_gray("Run `deno upgrade` to install it.")
);
print_release_notes(version::deno(), &upgrade_version);
}
update_checker.store_prompted();
}
}
}
async fn fetch_and_store_latest_version<
TEnvironment: UpdateCheckerEnvironment,
>(
env: &TEnvironment,
) {
// Fetch latest version or commit hash from server.
let latest_version = match env.latest_version().await {
Ok(latest_version) => latest_version,
Err(_) => return,
};
env.write_check_file(
&CheckVersionFile {
// put a date in the past here so that prompt can be shown on next run
last_prompt: env
.current_time()
.sub(chrono::Duration::hours(UPGRADE_CHECK_INTERVAL + 1)),
last_checked: env.current_time(),
current_version: env.current_version().to_string(),
latest_version,
}
.serialize(),
);
}
pub async fn upgrade(
flags: Flags,
upgrade_flags: UpgradeFlags,
) -> Result<(), AnyError> {
let ps = ProcState::build(flags).await?;
let current_exe_path = std::env::current_exe()?;
let metadata = fs::metadata(&current_exe_path)?;
let permissions = metadata.permissions();
if permissions.readonly() {
bail!(
"You do not have write permission to {}",
current_exe_path.display()
);
}
#[cfg(unix)]
if std::os::unix::fs::MetadataExt::uid(&metadata) == 0
&& !nix::unistd::Uid::effective().is_root()
{
bail!(concat!(
"You don't have write permission to {} because it's owned by root.\n",
"Consider updating deno through your package manager if its installed from it.\n",
"Otherwise run `deno upgrade` as root.",
), current_exe_path.display());
}
let client = &ps.http_client;
let install_version = match upgrade_flags.version {
Some(passed_version) => {
if upgrade_flags.canary
&& !regex::Regex::new("^[0-9a-f]{40}$")?.is_match(&passed_version)
{
bail!("Invalid commit hash passed");
} else if !upgrade_flags.canary
&& Version::parse_standard(&passed_version).is_err()
{
bail!("Invalid version passed");
}
let current_is_passed = if upgrade_flags.canary {
crate::version::GIT_COMMIT_HASH == passed_version
} else if !crate::version::is_canary() {
crate::version::deno() == passed_version
} else {
false
};
if !upgrade_flags.force
&& upgrade_flags.output.is_none()
&& current_is_passed
{
log::info!("Version {} is already installed", crate::version::deno());
return Ok(());
} else {
passed_version
}
}
None => {
let latest_version = if upgrade_flags.canary {
log::info!("Looking up latest canary version");
get_latest_canary_version(client).await?
} else {
log::info!("Looking up latest version");
get_latest_release_version(client).await?
};
let current_is_most_recent = if upgrade_flags.canary {
let latest_hash = latest_version.clone();
crate::version::GIT_COMMIT_HASH == latest_hash
} else if !crate::version::is_canary() {
let current = Version::parse_standard(crate::version::deno()).unwrap();
let latest = Version::parse_standard(&latest_version).unwrap();
current >= latest
} else {
false
};
if !upgrade_flags.force
&& upgrade_flags.output.is_none()
&& current_is_most_recent
{
log::info!(
"Local deno version {} is the most recent release",
if upgrade_flags.canary {
crate::version::GIT_COMMIT_HASH
} else {
crate::version::deno()
}
);
return Ok(());
} else {
log::info!("Found latest version {}", latest_version);
latest_version
}
}
};
let download_url = if upgrade_flags.canary {
if env!("TARGET") == "aarch64-apple-darwin" {
bail!("Canary builds are not available for M1");
}
format!(
"https://dl.deno.land/canary/{}/{}",
install_version, *ARCHIVE_NAME
)
} else {
format!(
"{}/download/v{}/{}",
RELEASE_URL, install_version, *ARCHIVE_NAME
)
};
let archive_data = download_package(client, &download_url)
.await
.with_context(|| format!("Failed downloading {download_url}"))?;
log::info!("Deno is upgrading to version {}", &install_version);
let temp_dir = tempfile::TempDir::new()?;
let new_exe_path = unpack_into_dir(archive_data, cfg!(windows), &temp_dir)?;
fs::set_permissions(&new_exe_path, permissions)?;
check_exe(&new_exe_path)?;
if upgrade_flags.dry_run {
fs::remove_file(&new_exe_path)?;
log::info!("Upgraded successfully (dry run)");
if !upgrade_flags.canary {
print_release_notes(version::deno(), &install_version);
}
} else {
let output_exe_path =
upgrade_flags.output.as_ref().unwrap_or(&current_exe_path);
let output_result = if *output_exe_path == current_exe_path {
replace_exe(&new_exe_path, output_exe_path)
} else {
fs::rename(&new_exe_path, output_exe_path)
.or_else(|_| fs::copy(&new_exe_path, output_exe_path).map(|_| ()))
};
if let Err(err) = output_result {
const WIN_ERROR_ACCESS_DENIED: i32 = 5;
if cfg!(windows) && err.raw_os_error() == Some(WIN_ERROR_ACCESS_DENIED) {
return Err(err).with_context(|| {
format!(
concat!(
"Could not replace the deno executable. This may be because an ",
"existing deno process is running. Please ensure there are no ",
"running deno processes (ex. Stop-Process -Name deno ; deno {}), ",
"close any editors before upgrading, and ensure you have ",
"sufficient permission to '{}'."
),
// skip the first argument, which is the executable path
std::env::args().skip(1).collect::<Vec<_>>().join(" "),
output_exe_path.display(),
)
});
} else {
return Err(err.into());
}
}
log::info!("Upgraded successfully");
if !upgrade_flags.canary {
print_release_notes(version::deno(), &install_version);
}
}
drop(temp_dir); // delete the temp dir
Ok(())
}
async fn get_latest_release_version(
client: &HttpClient,
) -> Result<String, AnyError> {
let text = client
.download_text("https://dl.deno.land/release-latest.txt")
.await?;
let version = text.trim().to_string();
Ok(version.replace('v', ""))
}
async fn get_latest_canary_version(
client: &HttpClient,
) -> Result<String, AnyError> {
let text = client
.download_text("https://dl.deno.land/canary-latest.txt")
.await?;
let version = text.trim().to_string();
Ok(version)
}
async fn download_package(
client: &HttpClient,
download_url: &str,
) -> Result<Vec<u8>, AnyError> {
log::info!("Downloading {}", &download_url);
let maybe_bytes = {
let progress_bar = ProgressBar::new(ProgressBarStyle::DownloadBars);
// provide an empty string here in order to prefer the downloading
// text above which will stay alive after the progress bars are complete
let progress = progress_bar.update("");
client
.download_with_progress(download_url, &progress)
.await?
};
match maybe_bytes {
Some(bytes) => Ok(bytes),
None => {
log::info!("Download could not be found, aborting");
std::process::exit(1)
}
}
}
pub fn unpack_into_dir(
archive_data: Vec<u8>,
is_windows: bool,
temp_dir: &tempfile::TempDir,
) -> Result<PathBuf, std::io::Error> {
const EXE_NAME: &str = "deno";
let temp_dir_path = temp_dir.path();
let exe_ext = if is_windows { "exe" } else { "" };
let archive_path = temp_dir_path.join(EXE_NAME).with_extension("zip");
let exe_path = temp_dir_path.join(EXE_NAME).with_extension(exe_ext);
assert!(!exe_path.exists());
let archive_ext = Path::new(&*ARCHIVE_NAME)
.extension()
.and_then(|ext| ext.to_str())
.unwrap();
let unpack_status = match archive_ext {
"zip" if cfg!(windows) => {
fs::write(&archive_path, &archive_data)?;
Command::new("powershell.exe")
.arg("-NoLogo")
.arg("-NoProfile")
.arg("-NonInteractive")
.arg("-Command")
.arg(
"& {
param($Path, $DestinationPath)
trap { $host.ui.WriteErrorLine($_.Exception); exit 1 }
Add-Type -AssemblyName System.IO.Compression.FileSystem
[System.IO.Compression.ZipFile]::ExtractToDirectory(
$Path,
$DestinationPath
);
}",
)
.arg("-Path")
.arg(format!("'{}'", &archive_path.to_str().unwrap()))
.arg("-DestinationPath")
.arg(format!("'{}'", &temp_dir_path.to_str().unwrap()))
.spawn()
.map_err(|err| {
if err.kind() == std::io::ErrorKind::NotFound {
std::io::Error::new(
std::io::ErrorKind::NotFound,
"`powershell.exe` was not found in your PATH",
)
} else {
err
}
})?
.wait()?
}
"zip" => {
fs::write(&archive_path, &archive_data)?;
Command::new("unzip")
.current_dir(temp_dir_path)
.arg(&archive_path)
.spawn()
.map_err(|err| {
if err.kind() == std::io::ErrorKind::NotFound {
std::io::Error::new(
std::io::ErrorKind::NotFound,
"`unzip` was not found in your PATH, please install `unzip`",
)
} else {
err
}
})?
.wait()?
}
ext => panic!("Unsupported archive type: '{ext}'"),
};
assert!(unpack_status.success());
assert!(exe_path.exists());
fs::remove_file(&archive_path)?;
Ok(exe_path)
}
fn replace_exe(from: &Path, to: &Path) -> Result<(), std::io::Error> {
if cfg!(windows) {
// On windows you cannot replace the currently running executable.
// so first we rename it to deno.old.exe
fs::rename(to, to.with_extension("old.exe"))?;
} else {
fs::remove_file(to)?;
}
// Windows cannot rename files across device boundaries, so if rename fails,
// we try again with copy.
fs::rename(from, to).or_else(|_| fs::copy(from, to).map(|_| ()))?;
Ok(())
}
fn check_exe(exe_path: &Path) -> Result<(), AnyError> {
let output = Command::new(exe_path)
.arg("-V")
.stderr(std::process::Stdio::inherit())
.output()?;
assert!(output.status.success());
Ok(())
}
#[derive(Debug)]
struct CheckVersionFile {
pub last_prompt: chrono::DateTime<chrono::Utc>,
pub last_checked: chrono::DateTime<chrono::Utc>,
pub current_version: String,
pub latest_version: String,
}
impl CheckVersionFile {
pub fn parse(content: String) -> Option<Self> {
let split_content = content.split('!').collect::<Vec<_>>();
if split_content.len() != 4 {
return None;
}
let latest_version = split_content[2].trim().to_owned();
if latest_version.is_empty() {
return None;
}
let current_version = split_content[3].trim().to_owned();
if current_version.is_empty() {
return None;
}
let last_prompt = chrono::DateTime::parse_from_rfc3339(split_content[0])
.map(|dt| dt.with_timezone(&chrono::Utc))
.ok()?;
let last_checked = chrono::DateTime::parse_from_rfc3339(split_content[1])
.map(|dt| dt.with_timezone(&chrono::Utc))
.ok()?;
Some(CheckVersionFile {
last_prompt,
last_checked,
current_version,
latest_version,
})
}
fn serialize(&self) -> String {
format!(
"{}!{}!{}!{}",
self.last_prompt.to_rfc3339(),
self.last_checked.to_rfc3339(),
self.latest_version,
self.current_version,
)
}
fn with_last_prompt(self, dt: chrono::DateTime<chrono::Utc>) -> Self {
Self {
last_prompt: dt,
..self
}
}
}
#[cfg(test)]
mod test {
use std::sync::Arc;
use deno_core::parking_lot::Mutex;
use super::*;
#[test]
fn test_parse_upgrade_check_file() {
let file = CheckVersionFile::parse(
"2020-01-01T00:00:00+00:00!2020-01-01T00:00:00+00:00!1.2.3!1.2.2"
.to_string(),
)
.unwrap();
assert_eq!(
file.last_prompt.to_rfc3339(),
"2020-01-01T00:00:00+00:00".to_string()
);
assert_eq!(
file.last_checked.to_rfc3339(),
"2020-01-01T00:00:00+00:00".to_string()
);
assert_eq!(file.latest_version, "1.2.3".to_string());
assert_eq!(file.current_version, "1.2.2".to_string());
let result =
CheckVersionFile::parse("2020-01-01T00:00:00+00:00!".to_string());
assert!(result.is_none());
let result = CheckVersionFile::parse("garbage!test".to_string());
assert!(result.is_none());
let result = CheckVersionFile::parse("test".to_string());
assert!(result.is_none());
}
#[test]
fn test_serialize_upgrade_check_file() {
let file = CheckVersionFile {
last_prompt: chrono::DateTime::parse_from_rfc3339("2020-01-01T00:00:00Z")
.unwrap()
.with_timezone(&chrono::Utc),
last_checked: chrono::DateTime::parse_from_rfc3339(
"2020-01-01T00:00:00Z",
)
.unwrap()
.with_timezone(&chrono::Utc),
latest_version: "1.2.3".to_string(),
current_version: "1.2.2".to_string(),
};
assert_eq!(
file.serialize(),
"2020-01-01T00:00:00+00:00!2020-01-01T00:00:00+00:00!1.2.3!1.2.2"
);
}
#[derive(Clone)]
struct TestUpdateCheckerEnvironment {
file_text: Arc<Mutex<String>>,
current_version: Arc<Mutex<String>>,
latest_version: Arc<Mutex<Result<String, String>>>,
time: Arc<Mutex<chrono::DateTime<chrono::Utc>>>,
}
impl TestUpdateCheckerEnvironment {
pub fn new() -> Self {
Self {
file_text: Default::default(),
current_version: Default::default(),
latest_version: Arc::new(Mutex::new(Ok("".to_string()))),
time: Arc::new(Mutex::new(crate::util::time::utc_now())),
}
}
pub fn add_hours(&self, hours: i64) {
let mut time = self.time.lock();
*time = time
.checked_add_signed(chrono::Duration::hours(hours))
.unwrap();
}
pub fn set_file_text(&self, text: &str) {
*self.file_text.lock() = text.to_string();
}
pub fn set_current_version(&self, version: &str) {
*self.current_version.lock() = version.to_string();
}
pub fn set_latest_version(&self, version: &str) {
*self.latest_version.lock() = Ok(version.to_string());
}
pub fn set_latest_version_err(&self, err: &str) {
*self.latest_version.lock() = Err(err.to_string());
}
}
impl UpdateCheckerEnvironment for TestUpdateCheckerEnvironment {
fn latest_version(&self) -> BoxFuture<'static, Result<String, AnyError>> {
let env = self.clone();
async move {
match env.latest_version.lock().clone() {
Ok(result) => Ok(result),
Err(err) => bail!("{}", err),
}
}
.boxed()
}
fn current_version(&self) -> Cow<str> {
Cow::Owned(self.current_version.lock().clone())
}
fn read_check_file(&self) -> String {
self.file_text.lock().clone()
}
fn write_check_file(&self, text: &str) {
self.set_file_text(text);
}
fn current_time(&self) -> chrono::DateTime<chrono::Utc> {
*self.time.lock()
}
}
#[tokio::test]
async fn test_update_checker() {
let env = TestUpdateCheckerEnvironment::new();
env.set_current_version("1.0.0");
env.set_latest_version("1.1.0");
let checker = UpdateChecker::new(env.clone());
// no version, so we should check, but not prompt
assert!(checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), None);
// store the latest version
fetch_and_store_latest_version(&env).await;
// reload
let checker = UpdateChecker::new(env.clone());
// should not check for latest version because we just did
assert!(!checker.should_check_for_new_version());
// but should prompt
assert_eq!(checker.should_prompt(), Some("1.1.0".to_string()));
// fast forward an hour and bump the latest version
env.add_hours(1);
env.set_latest_version("1.2.0");
assert!(!checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), Some("1.1.0".to_string()));
// fast forward again and it should check for a newer version
env.add_hours(UPGRADE_CHECK_INTERVAL);
assert!(checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), Some("1.1.0".to_string()));
fetch_and_store_latest_version(&env).await;
// reload and store that we prompted
let checker = UpdateChecker::new(env.clone());
assert!(!checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), Some("1.2.0".to_string()));
checker.store_prompted();
// reload and it should now say not to prompt
let checker = UpdateChecker::new(env.clone());
assert!(!checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), None);
// but if we fast forward past the upgrade interval it should prompt again
env.add_hours(UPGRADE_CHECK_INTERVAL + 1);
assert!(checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), Some("1.2.0".to_string()));
// upgrade the version and it should stop prompting
env.set_current_version("1.2.0");
assert!(checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), None);
// now try failing when fetching the latest version
env.add_hours(UPGRADE_CHECK_INTERVAL + 1);
env.set_latest_version_err("Failed");
env.set_latest_version("1.3.0");
// this will silently fail
fetch_and_store_latest_version(&env).await;
assert!(checker.should_check_for_new_version());
assert_eq!(checker.should_prompt(), None);
}
#[tokio::test]
async fn test_update_checker_current_newer_than_latest() {
let env = TestUpdateCheckerEnvironment::new();
let file_content = CheckVersionFile {
last_prompt: env
.current_time()
.sub(chrono::Duration::hours(UPGRADE_CHECK_INTERVAL + 1)),
last_checked: env.current_time(),
latest_version: "1.26.2".to_string(),
current_version: "1.27.0".to_string(),
}
.serialize();
env.write_check_file(&file_content);
env.set_current_version("1.27.0");
env.set_latest_version("1.26.2");
let checker = UpdateChecker::new(env);
// since currently running version is newer than latest available (eg. CDN
// propagation might be delated) we should not prompt
assert_eq!(checker.should_prompt(), None);
}
#[tokio::test]
async fn test_should_not_prompt_if_current_cli_version_has_changed() {
let env = TestUpdateCheckerEnvironment::new();
let file_content = CheckVersionFile {
last_prompt: env
.current_time()
.sub(chrono::Duration::hours(UPGRADE_CHECK_INTERVAL + 1)),
last_checked: env.current_time(),
latest_version: "1.26.2".to_string(),
current_version: "1.25.0".to_string(),
}
.serialize();
env.write_check_file(&file_content);
// simulate an upgrade done to a canary version
env.set_current_version("61fbfabe440f1cfffa7b8d17426ffdece4d430d0");
let checker = UpdateChecker::new(env);
assert_eq!(checker.should_prompt(), None);
}
}