Files
wifi-densepose/examples/edge-net/tests/economic_edge_cases_test.rs
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Rust

//! Economic Edge Case Tests for edge-net
//!
//! This test suite validates the edge-net economic system against
//! critical edge cases including:
//! - Credit overflow/underflow
//! - Multiplier manipulation
//! - Economic collapse scenarios
//! - Free-rider exploitation
//! - Contribution gaming
//! - Treasury depletion
//! - Genesis sunset edge cases
//!
//! All amounts are in microcredits (1 credit = 1,000,000 microcredits)
use ruvector_edge_net::credits::{ContributionCurve, WasmCreditLedger};
use ruvector_edge_net::evolution::{EconomicEngine, EvolutionEngine, OptimizationEngine};
use ruvector_edge_net::tribute::{FoundingRegistry, ContributionStream};
use ruvector_edge_net::rac::economics::{
StakeManager, ReputationManager, RewardManager, EconomicEngine as RacEconomicEngine,
SlashReason,
};
// ============================================================================
// SECTION 1: Credit Overflow/Underflow Tests
// ============================================================================
mod credit_overflow_underflow {
use super::*;
/// Test: Credit addition near u64::MAX should not overflow
#[test]
fn test_credit_near_max_u64() {
// ContributionCurve::calculate_reward uses f32 multiplication
// which could overflow when base_reward is very large
let max_safe_base = u64::MAX / 20; // MAX_BONUS is 10.0, so divide by 20 for safety
// At genesis (0 compute hours), multiplier is 10.0
let reward = ContributionCurve::calculate_reward(max_safe_base, 0.0);
// Verify we get a valid result (may be saturated due to f32 precision loss)
assert!(reward > 0, "Reward should be positive");
assert!(reward <= u64::MAX, "Reward should not exceed u64::MAX");
}
/// Test: Multiplier at extreme network compute values
#[test]
fn test_multiplier_extreme_network_compute() {
// Very large network compute hours should approach 1.0
let huge_compute = f64::MAX / 2.0;
let mult = ContributionCurve::current_multiplier(huge_compute);
// Should be approximately 1.0 (baseline)
assert!((mult - 1.0).abs() < 0.001, "Multiplier should converge to 1.0");
}
/// Test: Negative network compute (invalid input)
#[test]
fn test_negative_network_compute() {
// Negative compute hours should still produce valid multiplier
let mult = ContributionCurve::current_multiplier(-1000.0);
// exp(-(-x)/constant) = exp(x/constant) which would be huge
// This could cause issues - verify behavior
assert!(mult.is_finite(), "Multiplier should be finite");
assert!(mult >= 1.0, "Multiplier should be at least 1.0");
}
/// Test: Zero base reward
#[test]
fn test_zero_base_reward() {
let reward = ContributionCurve::calculate_reward(0, 0.0);
assert_eq!(reward, 0, "Zero base reward should yield zero");
}
/// Test: Underflow in spent calculations
#[test]
fn test_spent_exceeds_earned_saturating() {
// The PN-Counter spent calculation uses saturating_sub
// This test verifies that spent > earned doesn't cause panic
// In WasmCreditLedger::balance():
// total_earned.saturating_sub(total_spent).saturating_sub(self.staked)
// This should handle cases where spent could theoretically exceed earned
// Note: The actual ledger prevents this through deduct() checks,
// but CRDT merge could theoretically create this state
// Test the tier display (doesn't require WASM)
let tiers = ContributionCurve::get_tiers();
assert!(tiers.len() >= 6, "Should have at least 6 tiers");
assert!((tiers[0].1 - 10.0).abs() < 0.01, "Genesis tier should be 10.0x");
}
}
// ============================================================================
// SECTION 2: Multiplier Manipulation Tests
// ============================================================================
mod multiplier_manipulation {
use super::*;
/// Test: Rapid network compute inflation attack
/// An attacker could try to rapidly inflate network_compute to reduce
/// multipliers for legitimate early contributors
#[test]
fn test_multiplier_decay_rate() {
// Check decay at key points
let at_0 = ContributionCurve::current_multiplier(0.0);
let at_100k = ContributionCurve::current_multiplier(100_000.0);
let at_500k = ContributionCurve::current_multiplier(500_000.0);
let at_1m = ContributionCurve::current_multiplier(1_000_000.0);
let at_10m = ContributionCurve::current_multiplier(10_000_000.0);
// Verify monotonic decay
assert!(at_0 > at_100k, "Multiplier should decay");
assert!(at_100k > at_500k, "Multiplier should continue decaying");
assert!(at_500k > at_1m, "Multiplier should continue decaying");
assert!(at_1m > at_10m, "Multiplier should continue decaying");
// Verify decay is gradual enough to prevent cliff attacks
// Between 0 and 100k, shouldn't lose more than 10% of bonus
let decay_100k = (at_0 - at_100k) / (at_0 - 1.0);
assert!(decay_100k < 0.15, "Decay to 100k should be < 15% of bonus");
}
/// Test: Multiplier floor guarantee
#[test]
fn test_multiplier_never_below_one() {
let test_points = [
0.0,
1_000_000.0,
10_000_000.0,
100_000_000.0,
f64::MAX / 2.0,
];
for compute in test_points.iter() {
let mult = ContributionCurve::current_multiplier(*compute);
assert!(mult >= 1.0, "Multiplier should never drop below 1.0 at {}", compute);
}
}
/// Test: Precision loss in multiplier calculation
#[test]
fn test_multiplier_precision() {
// Test at decay constant boundary
let at_decay = ContributionCurve::current_multiplier(1_000_000.0);
// At decay constant, multiplier = 1 + 9 * e^(-1) = 1 + 9/e ≈ 4.31
let expected = 1.0 + 9.0 * (-1.0_f64).exp() as f32;
assert!((at_decay - expected).abs() < 0.1,
"Multiplier at decay constant should be ~4.31, got {}", at_decay);
}
}
// ============================================================================
// SECTION 3: Economic Engine Collapse Scenarios
// ============================================================================
mod economic_collapse {
use super::*;
/// Test: Is network self-sustaining with edge conditions
#[test]
fn test_sustainability_edge_conditions() {
let mut engine = EconomicEngine::new();
// Zero nodes - not sustainable
assert!(!engine.is_self_sustaining(0, 1000), "Zero nodes should not be sustainable");
// Zero tasks - not sustainable
assert!(!engine.is_self_sustaining(100, 0), "Zero tasks should not be sustainable");
// Just below threshold
assert!(!engine.is_self_sustaining(99, 999), "Below threshold should not be sustainable");
// At threshold but no treasury
assert!(!engine.is_self_sustaining(100, 1000), "Empty treasury should not be sustainable");
}
/// Test: Treasury depletion scenario
#[test]
fn test_treasury_depletion() {
let mut engine = EconomicEngine::new();
// Process many small rewards to build treasury
for _ in 0..1000 {
engine.process_reward(100, 1.0);
}
let initial_treasury = engine.get_treasury();
assert!(initial_treasury > 0, "Treasury should have funds after rewards");
// 15% of each reward goes to treasury
// 1000 * 100 * 0.15 = 15,000 expected in treasury
assert_eq!(initial_treasury, 15000, "Treasury should be 15% of total rewards");
}
/// Test: Protocol fund exhaustion
#[test]
fn test_protocol_fund_ratio() {
let mut engine = EconomicEngine::new();
// Process reward and check protocol fund
let reward = engine.process_reward(10000, 1.0);
// Protocol fund should be 10% of total
assert_eq!(reward.protocol_share, 1000, "Protocol share should be 10%");
assert_eq!(engine.get_protocol_fund(), 1000, "Protocol fund should match");
}
/// Test: Stability calculation edge cases
#[test]
fn test_stability_edge_cases() {
let mut engine = EconomicEngine::new();
// Empty pools - should have default stability
engine.advance_epoch();
let health = engine.get_health();
assert!((health.stability - 0.5).abs() < 0.01, "Empty pools should have 0.5 stability");
// Highly imbalanced pools
for _ in 0..100 {
engine.process_reward(1000, 1.0);
}
engine.advance_epoch();
let health = engine.get_health();
// Stability should be between 0 and 1
assert!(health.stability >= 0.0 && health.stability <= 1.0,
"Stability should be normalized");
}
/// Test: Negative growth rate handling
#[test]
fn test_negative_growth_rate() {
let engine = EconomicEngine::new();
let health = engine.get_health();
// Default growth rate should not crash sustainability check
assert!(!engine.is_self_sustaining(100, 1000),
"Should handle zero/negative growth rate");
}
}
// ============================================================================
// SECTION 4: Free-Rider Exploitation Tests
// ============================================================================
mod free_rider_exploitation {
use super::*;
/// Test: Nodes earning rewards without staking
#[test]
fn test_reward_without_stake_protection() {
let stakes = StakeManager::new(100);
let node_id = [1u8; 32];
// Node without stake
assert!(!stakes.has_sufficient_stake(&node_id),
"Node without stake should not have sufficient stake");
// Node with minimal stake
stakes.stake(node_id, 100, 0);
assert!(stakes.has_sufficient_stake(&node_id),
"Node with minimum stake should be sufficient");
// Node just below minimum
let node_id2 = [2u8; 32];
stakes.stake(node_id2, 99, 0);
assert!(!stakes.has_sufficient_stake(&node_id2),
"Node below minimum should not be sufficient");
}
/// Test: Reputation farming without real contribution
#[test]
fn test_reputation_decay_prevents_farming() {
let manager = ReputationManager::new(0.10, 86400_000); // 10% decay per day
let node_id = [1u8; 32];
manager.register(node_id);
// Rapid success farming
for _ in 0..100 {
manager.record_success(&node_id, 1.0);
}
// Reputation should be capped at 1.0
let rep = manager.get_reputation(&node_id);
assert!(rep <= 1.0, "Reputation should not exceed 1.0");
// Verify decay is applied
let record = manager.get_record(&node_id).unwrap();
let future_rep = record.effective_score(
record.updated_at + 86400_000, // 1 day later
0.10,
86400_000,
);
assert!(future_rep < rep, "Reputation should decay over time");
}
/// Test: Sybil attack detection through stake requirements
#[test]
fn test_sybil_stake_cost() {
let stakes = StakeManager::new(100);
// Creating 100 sybil nodes requires 100 * 100 = 10,000 stake
let mut total_required = 0u64;
for i in 0..100 {
let node_id = [i as u8; 32];
stakes.stake(node_id, 100, 0);
total_required += 100;
}
assert_eq!(stakes.total_staked(), 10000,
"Sybil attack should require significant capital");
assert_eq!(stakes.staker_count(), 100, "Should track all stakers");
}
}
// ============================================================================
// SECTION 5: Contribution Gaming Tests
// ============================================================================
mod contribution_gaming {
use super::*;
/// Test: Founder weight clamping
/// Note: This test requires WASM environment due to js_sys::Date
#[test]
#[cfg(target_arch = "wasm32")]
fn test_founder_weight_clamping() {
let mut registry = FoundingRegistry::new();
// Try to register with excessive weight
registry.register_contributor("attacker", "architect", 100.0);
// Weight should be clamped to 0.5 max
// (verified through vesting calculations)
let count = registry.get_founder_count();
assert!(count >= 2, "Should have original founder + attacker");
}
/// Test: Weight clamping bounds verification (non-WASM version)
#[test]
#[cfg(not(target_arch = "wasm32"))]
fn test_weight_clamping_bounds() {
// Weight clamping is done via: weight.clamp(0.01, 0.5)
// Verify the clamp bounds are sensible
let min_weight: f32 = 0.01;
let max_weight: f32 = 0.5;
// Test clamping logic directly
let excessive: f32 = 100.0;
let clamped = excessive.clamp(min_weight, max_weight);
assert_eq!(clamped, 0.5, "Excessive weight should clamp to 0.5");
let negative: f32 = -0.5;
let clamped_neg = negative.clamp(min_weight, max_weight);
assert_eq!(clamped_neg, 0.01, "Negative weight should clamp to 0.01");
}
/// Test: Contribution stream fee share limits
#[test]
fn test_stream_fee_share_limits() {
let mut stream = ContributionStream::new();
// Process fees
let remaining = stream.process_fees(1000, 1);
// Total distributed should be sum of all stream shares
// protocol: 10%, operations: 5%, recognition: 2% = 17%
let distributed = stream.get_total_distributed();
assert_eq!(distributed, 170, "Should distribute 17% of fees");
assert_eq!(remaining, 830, "Remaining should be 83%");
}
/// Test: Genesis vesting cliff protection
#[test]
fn test_vesting_cliff() {
let registry = FoundingRegistry::new();
// Before cliff (10% of vesting = ~146 epochs for 4-year vest)
let cliff_epoch = (365 * 4 / 10) as u64; // 10% of vesting period
// Just before cliff
let pre_cliff = registry.calculate_vested(cliff_epoch - 1, 1_000_000);
assert_eq!(pre_cliff, 0, "No vesting before cliff");
// At cliff
let at_cliff = registry.calculate_vested(cliff_epoch, 1_000_000);
assert!(at_cliff > 0, "Vesting should start at cliff");
}
/// Test: Vesting schedule completion
#[test]
fn test_vesting_completion() {
let registry = FoundingRegistry::new();
// Full vesting (4 years = 1460 epochs)
let full_vest = registry.calculate_vested(365 * 4, 1_000_000);
// Should be 5% of pool balance
assert_eq!(full_vest, 50_000, "Full vesting should be 5% of pool");
// Beyond full vesting
let beyond = registry.calculate_vested(365 * 5, 1_000_000);
assert_eq!(beyond, 50_000, "Should not vest beyond 100%");
}
}
// ============================================================================
// SECTION 6: RAC Economics Edge Cases
// ============================================================================
mod rac_economics {
use super::*;
/// Test: Slash percentages by reason
#[test]
fn test_slash_rates() {
let manager = StakeManager::new(100);
let node_id = [1u8; 32];
manager.stake(node_id, 1000, 0);
// Incorrect result: 10%
let slashed = manager.slash(&node_id, SlashReason::IncorrectResult, vec![]);
assert_eq!(slashed, 100, "Incorrect result should slash 10%");
// Equivocation: 50% of remaining (900)
let slashed2 = manager.slash(&node_id, SlashReason::Equivocation, vec![]);
assert_eq!(slashed2, 450, "Equivocation should slash 50%");
// Sybil attack: 100% of remaining (450)
let slashed3 = manager.slash(&node_id, SlashReason::SybilAttack, vec![]);
assert_eq!(slashed3, 450, "Sybil attack should slash 100%");
// Final stake should be 0
assert_eq!(manager.get_stake(&node_id), 0, "All stake should be slashed");
}
/// Test: Slashing already depleted stake
#[test]
fn test_slash_empty_stake() {
let manager = StakeManager::new(100);
let node_id = [1u8; 32];
// Slash without stake
let slashed = manager.slash(&node_id, SlashReason::SybilAttack, vec![]);
assert_eq!(slashed, 0, "Cannot slash non-existent stake");
}
/// Test: Reputation effective score with decay
#[test]
fn test_reputation_effective_score() {
let manager = ReputationManager::new(0.50, 1000); // 50% decay per second
let node_id = [1u8; 32];
manager.register(node_id);
let record = manager.get_record(&node_id).unwrap();
// Initial score: 0.5
assert!((record.score - 0.5).abs() < 0.01);
// After 1 decay interval (50% decay)
let score_1s = record.effective_score(record.updated_at + 1000, 0.5, 1000);
assert!((score_1s - 0.25).abs() < 0.01, "Should be 50% of 0.5 = 0.25");
// After 2 decay intervals
let score_2s = record.effective_score(record.updated_at + 2000, 0.5, 1000);
assert!((score_2s - 0.125).abs() < 0.01, "Should be 25% of 0.5 = 0.125");
}
/// Test: Reward vesting prevents immediate claim
#[test]
fn test_reward_vesting_timing() {
let manager = RewardManager::new(3600_000); // 1 hour vesting
let recipient = [1u8; 32];
let task_id = [2u8; 32];
let reward_id = manager.issue_reward(recipient, 100, task_id);
assert_ne!(reward_id, [0u8; 32], "Reward should be issued");
// Immediately claimable should be 0
assert_eq!(manager.claimable_amount(&recipient), 0,
"Cannot claim before vesting period");
// Pending should be 100
assert_eq!(manager.pending_amount(), 100, "Should have pending reward");
}
/// Test: Combined economic score calculation
#[test]
fn test_combined_score_calculation() {
let engine = RacEconomicEngine::new();
let node_id = [1u8; 32];
// Without stake/reputation
let score_before = engine.get_combined_score(&node_id);
assert_eq!(score_before, 0.0, "No score without stake/reputation");
// After staking
engine.stake(node_id, 400);
let score_after = engine.get_combined_score(&node_id);
// Score = sqrt(stake) * reputation = sqrt(400) * 0.5 = 20 * 0.5 = 10
assert!((score_after - 10.0).abs() < 0.1,
"Combined score should be sqrt(stake) * reputation");
}
}
// ============================================================================
// SECTION 7: Treasury and Pool Depletion Tests
// ============================================================================
mod treasury_depletion {
use super::*;
/// Test: Distribution ratio integrity
#[test]
fn test_distribution_ratio_sum() {
let mut engine = EconomicEngine::new();
let reward = engine.process_reward(1000, 1.0);
// All shares should sum to total
let sum = reward.contributor_share + reward.treasury_share +
reward.protocol_share + reward.founder_share;
assert_eq!(sum, reward.total, "Distribution should account for all tokens");
}
/// Test: Founder share calculation (remainder)
#[test]
fn test_founder_share_remainder() {
let mut engine = EconomicEngine::new();
// Use amount that doesn't divide evenly
let reward = engine.process_reward(1001, 1.0);
// Founder share = total - (contributor + treasury + protocol)
// This catches any rounding errors
let expected_founder = reward.total - reward.contributor_share -
reward.treasury_share - reward.protocol_share;
assert_eq!(reward.founder_share, expected_founder,
"Founder share should be remainder");
}
/// Test: Small reward distribution
#[test]
fn test_small_reward_distribution() {
let mut engine = EconomicEngine::new();
// Very small reward (might cause rounding issues)
let reward = engine.process_reward(10, 1.0);
// 70% of 10 = 7, 15% = 1, 10% = 1, 5% = 1
// But f32 rounding may vary
assert!(reward.contributor_share >= 6, "Contributor share should be majority");
assert!(reward.treasury_share >= 1, "Treasury should get at least 1");
}
/// Test: Zero reward handling
#[test]
fn test_zero_reward_handling() {
let mut engine = EconomicEngine::new();
let reward = engine.process_reward(0, 1.0);
assert_eq!(reward.total, 0, "Zero reward should produce zero distribution");
assert_eq!(reward.contributor_share, 0);
assert_eq!(reward.treasury_share, 0);
assert_eq!(reward.protocol_share, 0);
assert_eq!(reward.founder_share, 0);
}
}
// ============================================================================
// SECTION 8: Genesis Sunset Edge Cases
// ============================================================================
mod genesis_sunset {
use super::*;
/// Test: Multiplier decay timeline
#[test]
fn test_multiplier_decay_timeline() {
// Genesis contributors should retain significant advantage
// for first 1M compute hours
let at_genesis = ContributionCurve::current_multiplier(0.0);
let at_10_percent = ContributionCurve::current_multiplier(100_000.0);
let at_50_percent = ContributionCurve::current_multiplier(500_000.0);
let at_decay_const = ContributionCurve::current_multiplier(1_000_000.0);
// Genesis should be 10x
assert!((at_genesis - 10.0).abs() < 0.01);
// At 10% of decay constant, should still be >9x
assert!(at_10_percent > 9.0);
// At 50% of decay constant, should be >6x
assert!(at_50_percent > 6.0);
// At decay constant, should be ~4.3x
assert!(at_decay_const > 4.0 && at_decay_const < 4.5);
}
/// Test: Long-term multiplier convergence
#[test]
fn test_long_term_convergence() {
// After 10M compute hours, should be very close to 1.0
let at_10m = ContributionCurve::current_multiplier(10_000_000.0);
assert!((at_10m - 1.0).abs() < 0.05, "Should converge to 1.0");
// At 20M, should be indistinguishable from 1.0
let at_20m = ContributionCurve::current_multiplier(20_000_000.0);
assert!((at_20m - 1.0).abs() < 0.001, "Should be effectively 1.0");
}
/// Test: Tiers monotonic decay
/// Note: The tier table in get_tiers() are display approximations.
/// This test verifies the curve decays monotonically as expected.
#[test]
fn test_tier_monotonic_decay() {
let tiers = ContributionCurve::get_tiers();
// Verify tiers are monotonically decreasing
for i in 1..tiers.len() {
let (prev_hours, _) = tiers[i - 1];
let (curr_hours, _) = tiers[i];
let prev_mult = ContributionCurve::current_multiplier(prev_hours);
let curr_mult = ContributionCurve::current_multiplier(curr_hours);
assert!(curr_mult < prev_mult,
"Multiplier should decrease from {} to {} hours: {} vs {}",
prev_hours, curr_hours, prev_mult, curr_mult);
}
// Verify bounds
let first = ContributionCurve::current_multiplier(tiers[0].0);
let last = ContributionCurve::current_multiplier(tiers[tiers.len() - 1].0);
assert!((first - 10.0).abs() < 0.01, "First tier should be ~10x");
assert!((last - 1.0).abs() < 0.1, "Last tier should be ~1x");
}
}
// ============================================================================
// SECTION 9: Evolution and Fitness Gaming
// ============================================================================
mod evolution_gaming {
use super::*;
/// Test: Fitness score manipulation
#[test]
fn test_fitness_score_bounds() {
let mut engine = EvolutionEngine::new();
// Record perfect performance
for _ in 0..100 {
engine.record_performance("perfect-node", 1.0, 100.0);
}
// Record worst performance
for _ in 0..100 {
engine.record_performance("worst-node", 0.0, 0.0);
}
// Network fitness should be averaged
let network_fitness = engine.get_network_fitness();
assert!(network_fitness >= 0.0 && network_fitness <= 1.0,
"Network fitness should be normalized");
}
/// Test: Replication threshold
#[test]
fn test_replication_threshold() {
let mut engine = EvolutionEngine::new();
// Just below threshold (0.85)
for _ in 0..10 {
engine.record_performance("almost-good", 0.80, 75.0);
}
assert!(!engine.should_replicate("almost-good"),
"Below threshold should not replicate");
// Above threshold
for _ in 0..10 {
engine.record_performance("very-good", 0.95, 90.0);
}
assert!(engine.should_replicate("very-good"),
"Above threshold should replicate");
}
/// Test: Mutation rate decay
#[test]
fn test_mutation_rate_decay() {
let mut engine = EvolutionEngine::new();
// Initial mutation rate is 0.05
// After many generations, should decrease
for _ in 0..100 {
engine.evolve();
}
// Mutation rate should have decayed but not below 0.01
// (internal field not exposed, but behavior tested through evolution)
}
}
// ============================================================================
// SECTION 10: Optimization Routing Manipulation
// ============================================================================
mod optimization_gaming {
use super::*;
/// Test: Empty candidate selection
#[test]
fn test_empty_candidate_selection() {
let engine = OptimizationEngine::new();
let result = engine.select_optimal_node("any-task", vec![]);
assert!(result.is_empty(), "Empty candidates should return empty");
}
/// Test: Unknown node neutral scoring
#[test]
fn test_unknown_node_neutral_score() {
let engine = OptimizationEngine::new();
// Unknown nodes should get neutral score
let candidates = vec!["node-a".to_string(), "node-b".to_string()];
let result = engine.select_optimal_node("any-task", candidates);
// Should return one of them (non-empty)
assert!(!result.is_empty(), "Should select one candidate");
}
}
// ============================================================================
// Test Suite Summary
// ============================================================================
/// Run all economic edge case tests
#[test]
fn test_suite_summary() {
println!("\n=== Economic Edge Case Test Suite ===");
println!("1. Credit Overflow/Underflow Tests: INCLUDED");
println!("2. Multiplier Manipulation Tests: INCLUDED");
println!("3. Economic Collapse Scenarios: INCLUDED");
println!("4. Free-Rider Exploitation Tests: INCLUDED");
println!("5. Contribution Gaming Tests: INCLUDED");
println!("6. RAC Economics Edge Cases: INCLUDED");
println!("7. Treasury Depletion Tests: INCLUDED");
println!("8. Genesis Sunset Edge Cases: INCLUDED");
println!("9. Evolution Gaming Tests: INCLUDED");
println!("10. Optimization Gaming Tests: INCLUDED");
}