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keyfork-entropy: add doctests

This commit is contained in:
Ryan Heywood 2024-02-10 01:40:02 -05:00
parent 4e66367376
commit f2250d00e1
Signed by: ryan
GPG Key ID: 8E401478A3FBEF72
1 changed files with 16 additions and 0 deletions
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16
crates/util/keyfork-entropy/src/lib.rs
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@ -48,6 +48,12 @@ fn ensure_offline() {
}
/// Ensure the system is safe.
///
/// # Examples
/// ```rust
/// # std::env::set_var("SHOOT_SELF_IN_FOOT", "1");
/// keyfork_entropy::ensure_safe();
/// ```
pub fn ensure_safe() {
if !std::env::vars()
.any(|(name, _)| name == "SHOOT_SELF_IN_FOOT" || name == "INSECURE_HARDWARE_ALLOWED")
@ -61,6 +67,16 @@ pub fn ensure_safe() {
///
/// # Errors
/// An error may be returned if an error occurred while reading from the random source.
///
/// # Examples
/// ```rust,no_run
/// # fn main() -> Result<(), Box<dyn std::error::Error>> {
/// # std::env::set_var("SHOOT_SELF_IN_FOOT", "1");
/// let entropy = keyfork_entropy::generate_entropy_of_size(64)?;
/// assert_eq!(entropy.len(), 64);
/// # Ok(())
/// # }
/// ```
pub fn generate_entropy_of_size(byte_count: usize) -> Result<Vec<u8>, std::io::Error> {
ensure_safe();
let mut vec = vec![0u8; byte_count];