ic-backup 0.63.2

Host-side snapshot backup and same-release recovery for Internet Computer canisters
Documentation 
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use super::*;
use crate::tests::support::encode_fixture;
use crate::tests::support::response_fault::ObservationFault;
use crate::{
    model::ic_request::IcManagementMethodRecord as Method,
    tests::support::{
        ic_observation::{input, original},
        operation_plan::hash,
    },
};

#[test]
fn existing_status_and_inventory_wire_evidence_never_settles_attempts() {
    for method in [Method::CanisterStatus, Method::ListCanisterSnapshots] {
        let original = original(method);
        let before = original.journal.clone();
        let request = IcObservationRequest::new(
            &original.plan,
            7,
            &original.journal,
            &original.mutation,
            &original.payload,
        )
        .unwrap();
        let response = IcObservationResponse::new(input(&request)).unwrap();
        let view = validate_response(&request, &original.journal, &response).unwrap();
        assert_eq!(view.response().input().evidence, hash("34"));
        let checksum = ArtifactChecksumRecord::from_bytes(&response.input().reply);
        match view.reply() {
            IcObservationReplyView::Status(reply) => {
                let crate::model::ic_lifecycle_reply::IcLifecycleReplyKind::Status(info) =
                    reply.kind()
                else {
                    panic!("status shape")
                };
                assert_eq!(
                    info.status(),
                    ic_platform::management_canister_types::CanisterStatusType::Stopped
                );
                assert_eq!(reply.payload_checksum(), &checksum);
            }
            IcObservationReplyView::Inventory(reply) => {
                assert_eq!(reply.payload_checksum(), &checksum);
                assert_eq!(
                    reply.digest(),
                    IcSnapshotReply::decode(&original.payload, &response.input().reply)
                        .unwrap()
                        .digest()
                );
                // Cardinality is wire evidence, never exclusive capture attribution.
                for count in 0..=2 {
                    let snapshots = (0..count)
                        .map(|id| ic_platform::management_canister_types::Snapshot {
                            id: vec![id],
                            taken_at_timestamp: 42,
                            total_size: 128,
                        })
                        .collect::<Vec<_>>();
                    let mut fields = input(&request);
                    fields.reply = encode_fixture(snapshots).unwrap();
                    let response = IcObservationResponse::new(fields).unwrap();
                    let associated =
                        validate_response(&request, &original.journal, &response).unwrap();
                    let IcObservationReplyView::Inventory(inventory) = associated.reply() else {
                        panic!("inventory shape")
                    };
                    assert_eq!(inventory.snapshots().len(), usize::from(count));
                    assert_eq!(original.journal, before);
                }
            }
        }
        assert_eq!(original.journal, before);
        assert_eq!(original.journal.view().pending_mutation, Some(1));
        assert_eq!(original.journal.view().pending_observation, Some(2));
        assert!(!original.journal.view().applied);
    }
}

#[test]
fn actual_authority_attempt_payload_context_and_target_drift_are_typed_denials() {
    let original = original(Method::CanisterStatus);
    let request = IcObservationRequest::new(
        &original.plan,
        7,
        &original.journal,
        &original.mutation,
        &original.payload,
    )
    .unwrap();
    for (index, fault) in ObservationFault::ALL.iter().enumerate() {
        for end in [index + 1, ObservationFault::ALL.len()] {
            let mut fields = input(&request);
            for change in &ObservationFault::ALL[index..end] {
                change.apply(&mut fields, hash("12"), hash("12"));
            }
            fields.reply = b"invalid wire after claim drift".to_vec();
            let response = IcObservationResponse::new(fields).unwrap();
            let error = validate_response(&request, &original.journal, &response).unwrap_err();
            fault.assert_error(&error);
        }
    }
}

#[test]
fn wrong_wire_and_current_reservation_cannot_bypass_existing_owners() {
    for method in [Method::CanisterStatus, Method::ListCanisterSnapshots] {
        let original = original(method);
        let request = IcObservationRequest::new(
            &original.plan,
            7,
            &original.journal,
            &original.mutation,
            &original.payload,
        )
        .unwrap();
        let mut fields = input(&request);
        fields.reply = b"DIDL\0\0".to_vec();
        let response = IcObservationResponse::new(fields).unwrap();
        let error = validate_response(&request, &original.journal, &response).unwrap_err();
        assert!(match method {
            Method::CanisterStatus => matches!(error, IcObservationAssociationError::Status(_)),
            _ => matches!(error, IcObservationAssociationError::Inventory(_)),
        });
        let response = IcObservationResponse::new(input(&request)).unwrap();
        let empty = crate::model::attempt_journal::AttemptJournalRecord::new(
            original.journal.authority().clone(),
        );
        assert!(matches!(
            validate_response(&request, &empty, &response),
            Err(IcObservationAssociationError::Reservation(_))
        ));
    }
}