test(epoch): add comprehensive unit tests achieving 95%+ coverage #18
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Test coverage highlights: - All epoch transition and phase change logic - Commit-reveal scheme validation and consensus - Weight aggregation and emission distribution - Mechanism weight management and Bittensor integration - Comprehensive edge case handling
📝 WalkthroughWalkthroughAdded extensive unit tests across the epoch crate covering aggregator emissions, commit-reveal flows and manager interactions, epoch config/state, and mechanism weight handling; no public APIs or production logic were modified. Tests total ~1,430 added lines. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~30 minutes Poem
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🧹 Nitpick comments (6)
crates/epoch/src/commit_reveal.rs (3)
609-626: Add assertion to verify cleanup behavior.The test sets up epochs 0, 1, 2 and calls
cleanup_old_epochs(2, 1), but lacks an assertion to verify that epochs 0 and 1 were actually removed. Without verifying the internal state, this test doesn't confirm the cleanup worked correctly.Consider exposing a method to check state count or use
get_or_createto verify which epochs remain.
628-643: Consider adding assertions to verify state creation.This test verifies that
get_or_createcan be called twice without panicking, but doesn't assert that the state was actually created or that subsequent calls return the same state. Adding assertions would make this a more meaningful test.
602-607: Replace trivialassert!(true)with meaningful assertion.
assert!(true)provides no value. Consider asserting on an actual property of the manager.♻️ Suggested improvement
#[test] fn test_commit_reveal_manager_default() { let manager = CommitRevealManager::default(); - // Just verify it can be created - assert!(true); + // Verify initial state + let result = manager.finalize(0, ChallengeId::new(), 0.3, 1); + assert!(result.is_err()); // No commits exist }crates/epoch/src/mechanism_weights.rs (3)
1003-1026: Test assertion expectation may fail for edge case.On line 1025, the test asserts
sum == MAX_WEIGHT as u32, but with very small weights (0.001 * 0.01 emission = 0.00001 scaled weight), the individual weights may round to 0, causing only the burn weight to be added. The burn weight calculation usessaturating_sub, which would giveMAX_WEIGHT - 0 = MAX_WEIGHT, so the assertion should pass. However, line 1023 uses> 0instead of!is_empty().♻️ Minor style improvement
// Should still handle small weights - assert!(mech_weights.uids.len() > 0); + assert!(!mech_weights.uids.is_empty()); let sum: u32 = mech_weights.weights.iter().map(|w| *w as u32).sum(); assert_eq!(sum, MAX_WEIGHT as u32);
1090-1123: Same style nit: prefer!is_empty()overlen() > 0.Lines 1121 uses
uids.len() > 0which is idiomatic but Clippy recommends!is_empty().♻️ Minor style improvement
let (mech_id, uids, weights) = &all[0]; assert_eq!(*mech_id, 5); - assert!(uids.len() > 0); + assert!(!uids.is_empty()); assert_eq!(uids.len(), weights.len());
862-867: Replace trivialassert!(true)with meaningful assertion.Same issue as in commit_reveal.rs - this assertion provides no value.
♻️ Suggested improvement
#[test] fn test_mechanism_commit_reveal_manager_default() { let manager = MechanismCommitRevealManager::default(); - // Just verify it can be created - assert!(true); + // Verify initial state + assert!(!manager.all_revealed()); + assert!(manager.get_all_commitments().is_empty()); }
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📒 Files selected for processing (5)
crates/epoch/src/aggregator.rscrates/epoch/src/commit_reveal.rscrates/epoch/src/lib.rscrates/epoch/src/manager.rscrates/epoch/src/mechanism_weights.rs
🧰 Additional context used
🧬 Code graph analysis (1)
crates/epoch/src/manager.rs (1)
crates/epoch/src/lib.rs (2)
default(43-52)new(95-103)
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- GitHub Check: Test
🔇 Additional comments (4)
crates/epoch/src/lib.rs (1)
158-198: LGTM!Clean unit tests covering the core types' defaults, display formatting, equality, and initialization. The assertions correctly match the implementation.
crates/epoch/src/aggregator.rs (1)
293-570: LGTM!Comprehensive test coverage for the weight aggregator including edge cases like zero emission, missing weights, empty challenges, and validator metrics. The tests correctly validate expected behavior and error conditions.
crates/epoch/src/manager.rs (1)
256-483: LGTM!Thorough test coverage for the epoch manager including phase transitions, block calculations, and edge cases like multi-epoch jumps. The tests correctly validate the state machine behavior.
crates/epoch/src/mechanism_weights.rs (1)
593-1137: Overall: Excellent test coverage.The tests comprehensively cover edge cases including zero/negative weights, missing hotkeys, UID 0 handling, emission clamping, rounding behavior, and the complete commit-reveal workflow. Good job exercising the various code paths.
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Actionable comments posted: 0
🧹 Nitpick comments (1)
crates/epoch/src/commit_reveal.rs (1)
326-326: Remove unused import.The
Arcimport is not used anywhere in the test module.♻️ Proposed fix
- use std::sync::Arc;
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crates/epoch/src/commit_reveal.rscrates/epoch/src/mechanism_weights.rs
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🔇 Additional comments (2)
crates/epoch/src/commit_reveal.rs (1)
394-729: Excellent test coverage!This comprehensive test suite thoroughly exercises the commit-reveal implementation, covering happy paths, error conditions, edge cases, and manager lifecycle. The tests validate:
- Epoch and challenge validation
- Duplicate submission prevention
- Missing commitment/reveal handling
- Validator threshold enforcement
- Multi-challenge scenarios
- Cleanup operations
- Error message formatting
This aligns well with the PR's goal of achieving 95%+ test coverage.
crates/epoch/src/mechanism_weights.rs (1)
594-1138: Outstanding comprehensive test coverage!This extensive test suite provides thorough coverage of the mechanism weight management system, including:
- Emission weight edge cases (zero, full, clamping)
- Hotkey-to-UID mapping and fallback behavior
- UID 0 (burn address) handling
- Weight calculation accuracy and rounding
- Commit-reveal workflow (matching/mismatched reveals, missing commitments)
- Manager operations (registration, submission, retrieval, cleanup)
- Multi-mechanism and multi-challenge scenarios
- Complete end-to-end workflow validation
The tests systematically cover edge cases and integration scenarios, strongly supporting the PR's 95%+ coverage goal.
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