Layer 2 Skills Test Scenarios

Layer 2: Design Choices

m05-type-driven

Query	Expected Skill	Expected Elements
newtype pattern	m05-type-driven	wrapper, type safety
PhantomData 用法	m05-type-driven	marker, lifetime
type state pattern	m05-type-driven	state machine, compile-time
零大小类型 ZST	m05-type-driven	zero-sized, marker

Test Commands

claude -p "newtype pattern"
claude -p "PhantomData 用法"

---

m09-domain

Query	Expected Skill	Expected Elements
DDD in Rust	m09-domain	aggregate, entity
domain model 设计	m09-domain	value object, repository
领域建模	m09-domain	bounded context
aggregate root	m09-domain	invariant, consistency

Test Commands

claude -p "DDD in Rust"
claude -p "领域建模"

---

m10-performance

Query	Expected Skill	Expected Elements
Rust 性能优化	m10-performance	profiling, bottleneck
benchmark 怎么写	m10-performance	criterion, bench
criterion 用法	m10-performance	black_box, throughput
零拷贝 zero copy	m10-performance	Cow, bytes

Test Commands

claude -p "Rust 性能优化"
claude -p "benchmark 怎么写"

---

m11-ecosystem

Query	Expected Skill	Expected Elements
推荐什么 crate	m11-ecosystem	crates.io, popularity
依赖选择	m11-ecosystem	maintenance, features
Cargo.toml 依赖管理	m11-ecosystem	version, workspace
feature flags 用法	m11-ecosystem	optional, cfg

Test Commands

claude -p "推荐什么 crate"
claude -p "feature flags 用法"

---

m12-lifecycle

Query	Expected Skill	Expected Elements
RAII pattern	m12-lifecycle	Drop, scope
Drop trait 实现	m12-lifecycle	destructor, cleanup
资源释放顺序	m12-lifecycle	drop order, field
scopeguard 用法	m12-lifecycle	defer, guard

Test Commands

claude -p "RAII pattern"
claude -p "Drop trait 实现"

---

m13-domain-error

Query	Expected Skill	Expected Elements
retry 策略	m13-domain-error	backoff, exponential
circuit breaker 实现	m13-domain-error	state, threshold
错误恢复模式	m13-domain-error	fallback, graceful
错误分类处理	m13-domain-error	transient, permanent

Test Commands

claude -p "retry 策略"
claude -p "circuit breaker 实现"

---

m14-mental-model

Query	Expected Skill	Expected Elements
怎么学 Rust	m14-mental-model	ownership, mindset
Rust 思维方式	m14-mental-model	borrow checker, mental model
从 Java 转 Rust	m14-mental-model	comparison, transition
为什么 Rust 这样设计	m14-mental-model	rationale, philosophy

Test Commands

claude -p "怎么学 Rust"
claude -p "Rust 思维方式"

---

m15-anti-pattern

Query	Expected Skill	Expected Elements
常见 Rust 错误	m15-anti-pattern	pitfall, mistake
code smell Rust	m15-anti-pattern	refactor, improve
Rust 反模式	m15-anti-pattern	avoid, better
clone 滥用	m15-anti-pattern	unnecessary, performance

Test Commands

claude -p "常见 Rust 错误"
claude -p "clone 滥用"

---

Validation Checklist

• All Layer 2 skills trigger correctly
• Design-related queries route properly
• Chinese keywords work
• No conflicts with Layer 1 skills

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