/// Tests which ensure that the main data structures can be round-tripped faithfully.

use super::*;
use crypto::Hash;
use serde_block_tree::{Error, Result, from_vec, to_vec};
use test_helpers::*;

#[test]
fn roundtrip_fragment_record() -> Result<()> {
    let expected = FragmentRecord::new(229, Hash::Sha2_256(PRINCIPAL));
    let ser_result = to_vec(&expected);
    let de_result = from_vec(&ser_result?);
    assert_eq!(expected, de_result?);
    Ok(())
}

#[test]
fn roundtrip_directory() -> Result<()> {
    let principal = Principal(Hash::Sha2_256(PRINCIPAL));
    let mut child = HashMap::new();
    child.insert(FragmentSerial(0), FragmentRecord::new(0, principal.0));
    let mut children = HashMap::new();
    children.insert(".metadata".to_string(), child);
    let expected = Directory {
        nodes: vec![Principal(Hash::Sha2_256(PRINCIPAL))],
        children
    };
    let ser_result = to_vec(&expected);
    let de_result = from_vec(&ser_result?);
    assert_eq!(expected, de_result?);
    Ok(())
}

#[test]
fn roundtrip_fragment() -> Result<()> {
    let body = Vec::from(PAYLOAD);
    let path = make_path(vec!["apps", "bohdi"]);
    let expected = Fragment::new(path.to_string().as_str(), 42, body)
        .map_err(|err| Error::Message(err.to_string()))?;
    let ser_result = to_vec(&expected);
    let de_result = from_vec(&ser_result?);
    assert_eq!(expected, de_result?);
    Ok(())
}

#[test]
fn roundtrip_write_cap() -> Result<()> {
    let expected = make_write_cap()?;
    let ser_result = to_vec(&expected);
    let de_result = from_vec(&ser_result?);
    assert_eq!(expected, de_result?);
    Ok(())
}

#[test]
fn roundtrip_read_cap() -> Result<()> {
    let expected = make_read_cap();
    let ser_result = to_vec(&expected);
    let de_result = from_vec(&ser_result?);
    assert_eq!(expected, de_result?);
    Ok(())
}

#[test]
fn roundtrip_versioned_block() -> Result<()> {
    let expected = VersionedBlock::V0(make_block()?);
    let ser_result = to_vec(&expected);
    let de_result = from_vec(&ser_result?);
    assert_eq!(expected, de_result?);
    Ok(())
}