bc-envelope 0.43.0

Gordian Envelope for Rust.
Documentation 
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#![cfg(feature = "compress")]
use bc_components::DigestProvider;
use bc_envelope::prelude::*;

mod common;
#[cfg(feature = "signature")]
use bc_rand::make_fake_random_number_generator;
#[cfg(feature = "signature")]
use indoc::indoc;

use crate::common::check_encoding::*;
#[cfg(feature = "signature")]
use crate::common::test_data::*;

static SOURCE: &str = "Lorem ipsum dolor sit amet consectetur adipiscing elit mi nibh ornare proin blandit diam ridiculus, faucibus mus dui eu vehicula nam donec dictumst sed vivamus bibendum aliquet efficitur. Felis imperdiet sodales dictum morbi vivamus augue dis duis aliquet velit ullamcorper porttitor, lobortis dapibus hac purus aliquam natoque iaculis blandit montes nunc pretium.";

#[test]
fn test_compress() {
    let original = Envelope::new(SOURCE);
    assert_eq!(original.to_cbor_data().len(), 371);
    let compressed = original.compress().unwrap().check_encoding().unwrap();
    assert_eq!(compressed.to_cbor_data().len(), 283);

    assert_eq!(original.digest(), compressed.digest());
    let decompressed =
        compressed.decompress().unwrap().check_encoding().unwrap();
    assert_eq!(decompressed.digest(), original.digest());
    assert_eq!(
        decompressed.structural_digest(),
        original.structural_digest()
    );
}

#[cfg(feature = "signature")]
#[test]
fn test_compress_subject() {
    use std::{cell::RefCell, rc::Rc};

    use bc_components::SigningOptions;
    use bc_envelope::known_values;

    let rng = Rc::new(RefCell::new(make_fake_random_number_generator()));
    let options = SigningOptions::Schnorr { rng };
    let original = Envelope::new("Alice")
        .add_assertion(known_values::NOTE, SOURCE)
        .wrap()
        .add_signature_opt(&alice_private_key(), Some(options), None);
    assert_eq!(original.to_cbor_data().len(), 458);
    let s = original.tree_format();
    // expected-text-output-rubric:
    #[rustfmt::skip]
    assert_actual_expected!(s, indoc! {r#"
        ec608f27 NODE
            d7183f04 subj WRAPPED
                7f35e345 cont NODE
                    13941b48 subj "Alice"
                    9fb69539 ASSERTION
                        0fcd6a39 pred 'note'
                        e343c9b4 obj "Lorem ipsum dolor sit amet consectetur a…"
            0db2ee20 ASSERTION
                d0e39e78 pred 'signed'
                f0d3ce4c obj Signature
    "#}.trim());
    let compressed = original
        .compress_subject()
        .unwrap()
        .check_encoding()
        .unwrap();
    assert_eq!(compressed.clone().to_cbor_data().len(), 374);
    let s = compressed.tree_format();
    // expected-text-output-rubric:
    #[rustfmt::skip]
    assert_actual_expected!(s, indoc! {r#"
        ec608f27 NODE
            d7183f04 subj COMPRESSED
            0db2ee20 ASSERTION
                d0e39e78 pred 'signed'
                f0d3ce4c obj Signature
    "#}.trim());
    let s = compressed.mermaid_format();
    // expected-text-output-rubric:
    #[rustfmt::skip]
    assert_actual_expected!(s, indoc! {r#"
        %%{ init: { 'theme': 'default', 'flowchart': { 'curve': 'basis' } } }%%
        graph LR
        0(("NODE<br>ec608f27"))
            0 -- subj --> 1[["COMPRESSED<br>d7183f04"]]
            0 --> 2(["ASSERTION<br>0db2ee20"])
                2 -- pred --> 3[/"'signed'<br>d0e39e78"/]
                2 -- obj --> 4["Signature<br>f0d3ce4c"]
        style 0 stroke:red,stroke-width:4px
        style 1 stroke:purple,stroke-width:4px
        style 2 stroke:green,stroke-width:4px
        style 3 stroke:goldenrod,stroke-width:4px
        style 4 stroke:teal,stroke-width:4px
        linkStyle 0 stroke:red,stroke-width:2px
        linkStyle 1 stroke-width:2px
        linkStyle 2 stroke:cyan,stroke-width:2px
        linkStyle 3 stroke:magenta,stroke-width:2px
    "#}.trim());
    let decompressed = compressed
        .decompress_subject()
        .unwrap()
        .check_encoding()
        .unwrap();
    assert_eq!(decompressed.digest(), original.digest());
    assert_eq!(
        decompressed.structural_digest(),
        original.structural_digest()
    );
}