40ed108dd5
KVM-based microVMM for the Volt platform: - Sub-second VM boot times - Minimal memory footprint - Landlock LSM + seccomp security - Virtio device support - Custom kernel management Copyright (c) Armored Gates LLC. All rights reserved. Licensed under AGPSL v5.0
73 lines
2.3 KiB
Rust
73 lines
2.3 KiB
Rust
//! Integration test for snapshot/restore
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//!
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//! Tests:
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//! 1. Create a VM with KVM
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//! 2. Load kernel and boot
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//! 3. Pause vCPUs
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//! 4. Create a snapshot
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//! 5. Restore from snapshot
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//! 6. Verify restore is faster than cold boot
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use std::path::Path;
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use std::time::Instant;
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/// Test that the snapshot module compiles and basic types work
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#[test]
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fn test_snapshot_types_roundtrip() {
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// We can't use volt-vmm internals directly since it's a bin crate,
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// but we can verify the basic snapshot format by creating and parsing JSON
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let snapshot_json = r#"{
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"metadata": {
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"version": 1,
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"memory_size": 134217728,
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"vcpu_count": 1,
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"created_at": 1234567890,
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"state_crc64": 0,
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"memory_file_size": 134217728
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},
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"vcpu_states": [],
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"irqchip": {
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"pic_master": {"raw_data": []},
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"pic_slave": {"raw_data": []},
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"ioapic": {"raw_data": []},
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"pit": {"channels": [], "flags": 0}
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},
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"clock": {"clock": 0, "flags": 0},
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"devices": {
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"serial": {
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"dlab": false, "ier": 0, "lcr": 0, "mcr": 0,
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"lsr": 96, "msr": 0, "scr": 0, "dll": 0, "dlh": 0,
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"thr_interrupt_pending": false, "input_buffer": []
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},
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"virtio_blk": null,
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"virtio_net": null,
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"mmio_transports": []
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},
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"memory_regions": [
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{"guest_addr": 0, "size": 134217728, "file_offset": 0}
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]
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}"#;
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// Verify it parses as valid JSON
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let parsed: serde_json::Value = serde_json::from_str(snapshot_json).unwrap();
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assert_eq!(parsed["metadata"]["version"], 1);
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assert_eq!(parsed["metadata"]["memory_size"], 134217728);
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assert_eq!(parsed["metadata"]["vcpu_count"], 1);
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}
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#[test]
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fn test_crc64_deterministic() {
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// Test that CRC-64 computation is deterministic
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let data = b"Hello, Volt snapshot!";
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// Use the crc crate directly
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use crc::{Crc, CRC_64_ECMA_182};
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const CRC64: Crc<u64> = Crc::<u64>::new(&CRC_64_ECMA_182);
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let crc1 = CRC64.checksum(data);
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let crc2 = CRC64.checksum(data);
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assert_eq!(crc1, crc2);
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assert_ne!(crc1, 0); // Very unlikely to be zero for non-empty data
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}
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