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Merge pull request #87 from dyc3/tui-reorganization

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Reorganization of tui helpers and reduce repeated code
This commit is contained in:
Carson McManus 2021-08-14 11:30:13 -04:00 committed by GitHub
commit 7f7fedf59c
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 349 additions and 277 deletions
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34
src/demos.rs Normal file
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@ -0,0 +1,34 @@
use crate::tui;
use log::*;
use steamguard::{Confirmation, ConfirmationType};
pub fn demo_confirmation_menu() {
info!("showing demo menu");
let (accept, deny) = tui::prompt_confirmation_menu(vec![
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::Trade,
creator: 09870987,
},
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::MarketSell,
creator: 09870987,
},
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::AccountRecovery,
creator: 09870987,
},
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::Trade,
creator: 09870987,
},
]);
println!("accept: {}, deny: {}", accept.len(), deny.len());
}

324
src/main.rs
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@ -1,22 +1,14 @@
extern crate rpassword; extern crate rpassword;
use clap::{crate_version, App, Arg}; use clap::{crate_version, App, Arg};
use log::*; use log::*;
use regex::Regex;
use std::collections::HashSet;
use std::{ use std::{
io::{stdin, stdout, Write}, io::{stdout, Write},
path::Path, path::Path,
sync::{Arc, Mutex}, sync::{Arc, Mutex},
}; };
use steamguard::{ use steamguard::{
steamapi, AccountLinkError, AccountLinker, Confirmation, ConfirmationType, FinalizeLinkError, steamapi, AccountLinkError, AccountLinker, Confirmation, FinalizeLinkError, LoginError,
LoginError, SteamGuardAccount, UserLogin, SteamGuardAccount, UserLogin,
};
use termion::{
event::{Event, Key},
input::TermRead,
raw::IntoRawMode,
screen::AlternateScreen,
}; };
#[macro_use] #[macro_use]
@ -25,11 +17,8 @@ extern crate lazy_static;
extern crate anyhow; extern crate anyhow;
extern crate dirs; extern crate dirs;
mod accountmanager; mod accountmanager;
mod demos;
lazy_static! { mod tui;
static ref CAPTCHA_VALID_CHARS: Regex =
Regex::new("^([A-H]|[J-N]|[P-R]|[T-Z]|[2-4]|[7-9]|[@%&])+$").unwrap();
}
fn main() { fn main() {
let matches = App::new("steamguard-cli") let matches = App::new("steamguard-cli")
@ -121,7 +110,7 @@ fn main() {
if let Some(demo_matches) = matches.subcommand_matches("debug") { if let Some(demo_matches) = matches.subcommand_matches("debug") {
if demo_matches.is_present("demo-conf-menu") { if demo_matches.is_present("demo-conf-menu") {
demo_confirmation_menu(); demos::demo_confirmation_menu();
} }
return; return;
} }
@ -136,12 +125,11 @@ fn main() {
let mut manifest: accountmanager::Manifest; let mut manifest: accountmanager::Manifest;
if !path.exists() { if !path.exists() {
error!("Did not find manifest in {}", mafiles_dir); error!("Did not find manifest in {}", mafiles_dir);
print!( match tui::prompt_char(
"Would you like to create a manifest in {} ? [Yn] ", format!("Would you like to create a manifest in {} ?", mafiles_dir).as_str(),
mafiles_dir "Yn",
); ) {
match prompt().to_lowercase().as_str() { 'n' => {
"n" => {
info!("Aborting!"); info!("Aborting!");
return; return;
} }
@ -185,7 +173,7 @@ fn main() {
Err(AccountLinkError::MustProvidePhoneNumber) => { Err(AccountLinkError::MustProvidePhoneNumber) => {
println!("Enter your phone number in the following format: +1 123-456-7890"); println!("Enter your phone number in the following format: +1 123-456-7890");
print!("Phone number: "); print!("Phone number: ");
linker.phone_number = prompt().replace(&['(', ')', '-'][..], ""); linker.phone_number = tui::prompt().replace(&['(', ')', '-'][..], "");
} }
Err(AccountLinkError::AuthenticatorPresent) => { Err(AccountLinkError::AuthenticatorPresent) => {
println!("An authenticator is already present on this account."); println!("An authenticator is already present on this account.");
@ -193,7 +181,7 @@ fn main() {
} }
Err(AccountLinkError::MustConfirmEmail) => { Err(AccountLinkError::MustConfirmEmail) => {
println!("Check your email and click the link."); println!("Check your email and click the link.");
pause(); tui::pause();
} }
Err(err) => { Err(err) => {
error!( error!(
@ -228,7 +216,7 @@ fn main() {
debug!("attempting link finalization"); debug!("attempting link finalization");
print!("Enter SMS code: "); print!("Enter SMS code: ");
let sms_code = prompt(); let sms_code = tui::prompt();
let mut tries = 0; let mut tries = 0;
loop { loop {
match linker.finalize(&mut account, sms_code.clone()) { match linker.finalize(&mut account, sms_code.clone()) {
@ -320,7 +308,7 @@ fn main() {
} }
Err(_) => { Err(_) => {
info!("failed to get trade confirmations, asking user to log in"); info!("failed to get trade confirmations, asking user to log in");
do_login(&mut account); do_login(&mut account).expect("Failed to log in");
} }
} }
} }
@ -333,7 +321,7 @@ fn main() {
} }
} else { } else {
if termion::is_tty(&stdout()) { if termion::is_tty(&stdout()) {
let (accept, deny) = prompt_confirmation_menu(confirmations); let (accept, deny) = tui::prompt_confirmation_menu(confirmations);
for conf in &accept { for conf in &accept {
let result = account.accept_confirmation(conf); let result = account.accept_confirmation(conf);
debug!("accept confirmation result: {:?}", result); debug!("accept confirmation result: {:?}", result);
@ -351,7 +339,7 @@ fn main() {
} }
} }
manifest.save(); manifest.save().expect("Failed to save manifest");
} else if let Some(_) = matches.subcommand_matches("remove") { } else if let Some(_) = matches.subcommand_matches("remove") {
println!( println!(
"This will remove the mobile authenticator from {} accounts: {}", "This will remove the mobile authenticator from {} accounts: {}",
@ -363,11 +351,10 @@ fn main() {
.join(", ") .join(", ")
); );
print!("Do you want to continue? [yN] "); match tui::prompt_char("Do you want to continue?", "yN") {
match prompt().as_str() { 'y' => {}
"y" => {}
_ => { _ => {
println!("Aborting!"); info!("Aborting!");
return; return;
} }
} }
@ -411,175 +398,12 @@ fn main() {
} }
} }
fn validate_captcha_text(text: &String) -> bool { fn do_login(account: &mut SteamGuardAccount) -> anyhow::Result<()> {
return CAPTCHA_VALID_CHARS.is_match(text);
}
#[test]
fn test_validate_captcha_text() {
assert!(validate_captcha_text(&String::from("2WWUA@")));
assert!(validate_captcha_text(&String::from("3G8HT2")));
assert!(validate_captcha_text(&String::from("3J%@X3")));
assert!(validate_captcha_text(&String::from("2GCZ4A")));
assert!(validate_captcha_text(&String::from("3G8HT2")));
assert!(!validate_captcha_text(&String::from("asd823")));
assert!(!validate_captcha_text(&String::from("!PQ4RD")));
assert!(!validate_captcha_text(&String::from("1GQ4XZ")));
assert!(!validate_captcha_text(&String::from("8GO4XZ")));
assert!(!validate_captcha_text(&String::from("IPQ4RD")));
assert!(!validate_captcha_text(&String::from("0PT4RD")));
assert!(!validate_captcha_text(&String::from("APTSRD")));
assert!(!validate_captcha_text(&String::from("AP5TRD")));
assert!(!validate_captcha_text(&String::from("AP6TRD")));
}
/// Prompt the user for text input.
fn prompt() -> String {
let mut text = String::new();
let _ = std::io::stdout().flush();
stdin()
.read_line(&mut text)
.expect("Did not enter a correct string");
return String::from(text.strip_suffix('\n').unwrap());
}
fn prompt_captcha_text(captcha_gid: &String) -> String {
println!("Captcha required. Open this link in your web browser: https://steamcommunity.com/public/captcha.php?gid={}", captcha_gid);
let mut captcha_text;
loop {
print!("Enter captcha text: ");
captcha_text = prompt();
if captcha_text.len() > 0 && validate_captcha_text(&captcha_text) {
break;
}
warn!("Invalid chars for captcha text found in user's input. Prompting again...");
}
return captcha_text;
}
/// Returns a tuple of (accepted, denied). Ignored confirmations are not included.
fn prompt_confirmation_menu(
confirmations: Vec<Confirmation>,
) -> (Vec<Confirmation>, Vec<Confirmation>) {
println!("press a key other than enter to show the menu.");
let mut to_accept_idx: HashSet<usize> = HashSet::new();
let mut to_deny_idx: HashSet<usize> = HashSet::new();
let mut screen = AlternateScreen::from(stdout().into_raw_mode().unwrap());
let stdin = stdin();
let mut selected_idx = 0;
for c in stdin.events() {
match c.expect("could not get events") {
Event::Key(Key::Char('a')) => {
to_accept_idx.insert(selected_idx);
to_deny_idx.remove(&selected_idx);
}
Event::Key(Key::Char('d')) => {
to_accept_idx.remove(&selected_idx);
to_deny_idx.insert(selected_idx);
}
Event::Key(Key::Char('i')) => {
to_accept_idx.remove(&selected_idx);
to_deny_idx.remove(&selected_idx);
}
Event::Key(Key::Char('A')) => {
(0..confirmations.len()).for_each(|i| {
to_accept_idx.insert(i);
to_deny_idx.remove(&i);
});
}
Event::Key(Key::Char('D')) => {
(0..confirmations.len()).for_each(|i| {
to_accept_idx.remove(&i);
to_deny_idx.insert(i);
});
}
Event::Key(Key::Char('I')) => {
(0..confirmations.len()).for_each(|i| {
to_accept_idx.remove(&i);
to_deny_idx.remove(&i);
});
}
Event::Key(Key::Up) if selected_idx > 0 => {
selected_idx -= 1;
}
Event::Key(Key::Down) if selected_idx < confirmations.len() - 1 => {
selected_idx += 1;
}
Event::Key(Key::Char('\n')) => {
break;
}
Event::Key(Key::Esc) | Event::Key(Key::Ctrl('c')) => {
return (vec![], vec![]);
}
_ => {}
}
write!(
screen,
"{}{}{}arrow keys to select, [a]ccept, [d]eny, [i]gnore, [enter] confirm choices\n\n",
termion::clear::All,
termion::cursor::Goto(1, 1),
termion::color::Fg(termion::color::White)
)
.unwrap();
for i in 0..confirmations.len() {
if selected_idx == i {
write!(
screen,
"\r{} >",
termion::color::Fg(termion::color::LightYellow)
)
.unwrap();
} else {
write!(screen, "\r{} ", termion::color::Fg(termion::color::White)).unwrap();
}
if to_accept_idx.contains(&i) {
write!(
screen,
"{}[a]",
termion::color::Fg(termion::color::LightGreen)
)
.unwrap();
} else if to_deny_idx.contains(&i) {
write!(
screen,
"{}[d]",
termion::color::Fg(termion::color::LightRed)
)
.unwrap();
} else {
write!(screen, "[ ]").unwrap();
}
if selected_idx == i {
write!(
screen,
"{}",
termion::color::Fg(termion::color::LightYellow)
)
.unwrap();
}
write!(screen, " {}\n", confirmations[i].description()).unwrap();
}
}
return (
to_accept_idx.iter().map(|i| confirmations[*i]).collect(),
to_deny_idx.iter().map(|i| confirmations[*i]).collect(),
);
}
fn do_login(account: &mut SteamGuardAccount) {
if account.account_name.len() > 0 { if account.account_name.len() > 0 {
println!("Username: {}", account.account_name); println!("Username: {}", account.account_name);
} else { } else {
print!("Username: "); print!("Username: ");
account.account_name = prompt(); account.account_name = tui::prompt();
} }
let _ = std::io::stdout().flush(); let _ = std::io::stdout().flush();
let password = rpassword::prompt_password_stdout("Password: ").unwrap(); let password = rpassword::prompt_password_stdout("Password: ").unwrap();
@ -588,45 +412,17 @@ fn do_login(account: &mut SteamGuardAccount) {
} else { } else {
debug!("password is empty"); debug!("password is empty");
} }
// TODO: reprompt if password is empty account.session = Some(do_login_impl(
let mut login = UserLogin::new(account.account_name.clone(), password); account.account_name.clone(),
let mut loops = 0; password,
loop { Some(account),
match login.login() { )?);
Ok(s) => { return Ok(());
account.session = Option::Some(s);
break;
}
Err(LoginError::Need2FA) => {
debug!("generating 2fa code and retrying");
let server_time = steamapi::get_server_time();
login.twofactor_code = account.generate_code(server_time);
}
Err(LoginError::NeedCaptcha { captcha_gid }) => {
debug!("need captcha to log in");
login.captcha_text = prompt_captcha_text(&captcha_gid);
}
Err(LoginError::NeedEmail) => {
println!("You should have received an email with a code.");
print!("Enter code");
login.email_code = prompt();
}
r => {
error!("Fatal login result: {:?}", r);
return;
}
}
loops += 1;
if loops > 2 {
error!("Too many loops. Aborting login process, to avoid getting rate limited.");
return;
}
}
} }
fn do_login_raw() -> anyhow::Result<steamapi::Session> { fn do_login_raw() -> anyhow::Result<steamapi::Session> {
print!("Username: "); print!("Username: ");
let username = prompt(); let username = tui::prompt();
let _ = std::io::stdout().flush(); let _ = std::io::stdout().flush();
let password = rpassword::prompt_password_stdout("Password: ").unwrap(); let password = rpassword::prompt_password_stdout("Password: ").unwrap();
if password.len() > 0 { if password.len() > 0 {
@ -634,6 +430,14 @@ fn do_login_raw() -> anyhow::Result<steamapi::Session> {
} else { } else {
debug!("password is empty"); debug!("password is empty");
} }
return do_login_impl(username, password, None);
}
fn do_login_impl(
username: String,
password: String,
account: Option<&SteamGuardAccount>,
) -> anyhow::Result<steamapi::Session> {
// TODO: reprompt if password is empty // TODO: reprompt if password is empty
let mut login = UserLogin::new(username, password); let mut login = UserLogin::new(username, password);
let mut loops = 0; let mut loops = 0;
@ -642,18 +446,24 @@ fn do_login_raw() -> anyhow::Result<steamapi::Session> {
Ok(s) => { Ok(s) => {
return Ok(s); return Ok(s);
} }
Err(LoginError::Need2FA) => { Err(LoginError::Need2FA) => match account {
print!("Enter 2fa code: "); Some(a) => {
login.twofactor_code = prompt(); let server_time = steamapi::get_server_time();
login.twofactor_code = a.generate_code(server_time);
} }
None => {
print!("Enter 2fa code: ");
login.twofactor_code = tui::prompt();
}
},
Err(LoginError::NeedCaptcha { captcha_gid }) => { Err(LoginError::NeedCaptcha { captcha_gid }) => {
debug!("need captcha to log in"); debug!("need captcha to log in");
login.captcha_text = prompt_captcha_text(&captcha_gid); login.captcha_text = tui::prompt_captcha_text(&captcha_gid);
} }
Err(LoginError::NeedEmail) => { Err(LoginError::NeedEmail) => {
println!("You should have received an email with a code."); println!("You should have received an email with a code.");
print!("Enter code: "); print!("Enter code: ");
login.email_code = prompt(); login.email_code = tui::prompt();
} }
Err(r) => { Err(r) => {
error!("Fatal login result: {:?}", r); error!("Fatal login result: {:?}", r);
@ -668,44 +478,6 @@ fn do_login_raw() -> anyhow::Result<steamapi::Session> {
} }
} }
fn pause() {
println!("Press any key to continue...");
let mut stdout = stdout().into_raw_mode().unwrap();
stdout.flush().unwrap();
stdin().events().next();
}
fn demo_confirmation_menu() {
info!("showing demo menu");
let (accept, deny) = prompt_confirmation_menu(vec![
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::Trade,
creator: 09870987,
},
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::MarketSell,
creator: 09870987,
},
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::AccountRecovery,
creator: 09870987,
},
Confirmation {
id: 1234,
key: 12345,
conf_type: ConfirmationType::Trade,
creator: 09870987,
},
]);
println!("accept: {}, deny: {}", accept.len(), deny.len());
}
fn get_mafiles_dir() -> String { fn get_mafiles_dir() -> String {
let paths = vec![ let paths = vec![
Path::new(&dirs::config_dir().unwrap()).join("steamguard-cli/maFiles"), Path::new(&dirs::config_dir().unwrap()).join("steamguard-cli/maFiles"),

266
src/tui.rs Normal file
View file

@ -0,0 +1,266 @@
use log::*;
use regex::Regex;
use std::collections::HashSet;
use std::io::{Read, Write};
use steamguard::Confirmation;
use termion::{
event::{Event, Key},
input::TermRead,
raw::IntoRawMode,
screen::AlternateScreen,
};
lazy_static! {
static ref CAPTCHA_VALID_CHARS: Regex =
Regex::new("^([A-H]|[J-N]|[P-R]|[T-Z]|[2-4]|[7-9]|[@%&])+$").unwrap();
}
pub fn validate_captcha_text(text: &String) -> bool {
return CAPTCHA_VALID_CHARS.is_match(text);
}
#[test]
fn test_validate_captcha_text() {
assert!(validate_captcha_text(&String::from("2WWUA@")));
assert!(validate_captcha_text(&String::from("3G8HT2")));
assert!(validate_captcha_text(&String::from("3J%@X3")));
assert!(validate_captcha_text(&String::from("2GCZ4A")));
assert!(validate_captcha_text(&String::from("3G8HT2")));
assert!(!validate_captcha_text(&String::from("asd823")));
assert!(!validate_captcha_text(&String::from("!PQ4RD")));
assert!(!validate_captcha_text(&String::from("1GQ4XZ")));
assert!(!validate_captcha_text(&String::from("8GO4XZ")));
assert!(!validate_captcha_text(&String::from("IPQ4RD")));
assert!(!validate_captcha_text(&String::from("0PT4RD")));
assert!(!validate_captcha_text(&String::from("APTSRD")));
assert!(!validate_captcha_text(&String::from("AP5TRD")));
assert!(!validate_captcha_text(&String::from("AP6TRD")));
}
/// Prompt the user for text input.
pub fn prompt() -> String {
let mut text = String::new();
let _ = std::io::stdout().flush();
std::io::stdin()
.read_line(&mut text)
.expect("Did not enter a correct string");
return String::from(text.strip_suffix('\n').unwrap());
}
pub fn prompt_captcha_text(captcha_gid: &String) -> String {
println!("Captcha required. Open this link in your web browser: https://steamcommunity.com/public/captcha.php?gid={}", captcha_gid);
let mut captcha_text;
loop {
print!("Enter captcha text: ");
captcha_text = prompt();
if captcha_text.len() > 0 && validate_captcha_text(&captcha_text) {
break;
}
warn!("Invalid chars for captcha text found in user's input. Prompting again...");
}
return captcha_text;
}
/// Prompt the user for a single character response. Useful for asking yes or no questions.
///
/// `chars` should be all lowercase characters, with at most 1 uppercase character. The uppercase character is the default answer if no answer is provided.
pub fn prompt_char(text: &str, chars: &str) -> char {
return prompt_char_impl(&mut std::io::stdin(), text, chars);
}
fn prompt_char_impl(input: &mut impl Read, text: &str, chars: &str) -> char {
let uppers = chars.replace(char::is_lowercase, "");
if uppers.len() > 1 {
panic!("Invalid chars for prompt_char. Maximum 1 uppercase letter is allowed.");
}
let default_answer: Option<char> = if uppers.len() == 1 {
Some(uppers.chars().collect::<Vec<char>>()[0].to_ascii_lowercase())
} else {
None
};
loop {
print!("{} [{}] ", text, chars);
let answer = input
.read_line()
.expect("Unable to read input")
.unwrap()
.to_ascii_lowercase();
if answer.len() == 0 {
if let Some(a) = default_answer {
return a;
}
} else if answer.len() > 1 {
continue;
}
let answer_char = answer.chars().collect::<Vec<char>>()[0];
if chars.contains(answer_char) {
return answer_char;
}
}
}
/// Returns a tuple of (accepted, denied). Ignored confirmations are not included.
pub fn prompt_confirmation_menu(
confirmations: Vec<Confirmation>,
) -> (Vec<Confirmation>, Vec<Confirmation>) {
println!("press a key other than enter to show the menu.");
let mut to_accept_idx: HashSet<usize> = HashSet::new();
let mut to_deny_idx: HashSet<usize> = HashSet::new();
let mut screen = AlternateScreen::from(std::io::stdout().into_raw_mode().unwrap());
let stdin = std::io::stdin();
let mut selected_idx = 0;
for c in stdin.events() {
match c.expect("could not get events") {
Event::Key(Key::Char('a')) => {
to_accept_idx.insert(selected_idx);
to_deny_idx.remove(&selected_idx);
}
Event::Key(Key::Char('d')) => {
to_accept_idx.remove(&selected_idx);
to_deny_idx.insert(selected_idx);
}
Event::Key(Key::Char('i')) => {
to_accept_idx.remove(&selected_idx);
to_deny_idx.remove(&selected_idx);
}
Event::Key(Key::Char('A')) => {
(0..confirmations.len()).for_each(|i| {
to_accept_idx.insert(i);
to_deny_idx.remove(&i);
});
}
Event::Key(Key::Char('D')) => {
(0..confirmations.len()).for_each(|i| {
to_accept_idx.remove(&i);
to_deny_idx.insert(i);
});
}
Event::Key(Key::Char('I')) => {
(0..confirmations.len()).for_each(|i| {
to_accept_idx.remove(&i);
to_deny_idx.remove(&i);
});
}
Event::Key(Key::Up) if selected_idx > 0 => {
selected_idx -= 1;
}
Event::Key(Key::Down) if selected_idx < confirmations.len() - 1 => {
selected_idx += 1;
}
Event::Key(Key::Char('\n')) => {
break;
}
Event::Key(Key::Esc) | Event::Key(Key::Ctrl('c')) => {
return (vec![], vec![]);
}
_ => {}
}
write!(
screen,
"{}{}{}arrow keys to select, [a]ccept, [d]eny, [i]gnore, [enter] confirm choices\n\n",
termion::clear::All,
termion::cursor::Goto(1, 1),
termion::color::Fg(termion::color::White)
)
.unwrap();
for i in 0..confirmations.len() {
if selected_idx == i {
write!(
screen,
"\r{} >",
termion::color::Fg(termion::color::LightYellow)
)
.unwrap();
} else {
write!(screen, "\r{} ", termion::color::Fg(termion::color::White)).unwrap();
}
if to_accept_idx.contains(&i) {
write!(
screen,
"{}[a]",
termion::color::Fg(termion::color::LightGreen)
)
.unwrap();
} else if to_deny_idx.contains(&i) {
write!(
screen,
"{}[d]",
termion::color::Fg(termion::color::LightRed)
)
.unwrap();
} else {
write!(screen, "[ ]").unwrap();
}
if selected_idx == i {
write!(
screen,
"{}",
termion::color::Fg(termion::color::LightYellow)
)
.unwrap();
}
write!(screen, " {}\n", confirmations[i].description()).unwrap();
}
}
return (
to_accept_idx.iter().map(|i| confirmations[*i]).collect(),
to_deny_idx.iter().map(|i| confirmations[*i]).collect(),
);
}
pub fn pause() {
println!("Press any key to continue...");
let mut stdout = std::io::stdout().into_raw_mode().unwrap();
stdout.flush().unwrap();
std::io::stdin().events().next();
}
#[cfg(test)]
mod prompt_char_tests {
use super::*;
#[test]
fn test_gives_answer() {
let inputs = ['y', '\n'].iter().collect::<String>();
let answer = prompt_char_impl(&mut inputs.as_bytes(), "ligma balls", "yn");
assert_eq!(answer, 'y');
}
#[test]
fn test_gives_default() {
let inputs = ['\n'].iter().collect::<String>();
let answer = prompt_char_impl(&mut inputs.as_bytes(), "ligma balls", "Yn");
assert_eq!(answer, 'y');
}
#[test]
fn test_should_not_give_default() {
let inputs = ['n', '\n'].iter().collect::<String>();
let answer = prompt_char_impl(&mut inputs.as_bytes(), "ligma balls", "Yn");
assert_eq!(answer, 'n');
}
#[test]
fn test_should_not_give_invalid() {
let inputs = ['g', '\n', 'n', '\n'].iter().collect::<String>();
let answer = prompt_char_impl(&mut inputs.as_bytes(), "ligma balls", "yn");
assert_eq!(answer, 'n');
}
#[test]
fn test_should_not_give_multichar() {
let inputs = ['y', 'y', '\n', 'n', '\n'].iter().collect::<String>();
let answer = prompt_char_impl(&mut inputs.as_bytes(), "ligma balls", "yn");
assert_eq!(answer, 'n');
}
}