shanshanzhong147
9933d34bdd
Closes HIF-3 Stage 1 骨架：7 张表迁移 + 门槛规则引擎 + 加权选奖 + 次数入账/消耗（幂等）+ 发奖 handler 抽象与注册表。 - 单测覆盖 75.5%（未覆盖行 = stub handler ErrNotImplemented，合理） - CI 全绿（构建/Vet/测试 + golangci-lint） - 骨架不接入真实业务，vpn_duration/commission handler 在 Dispatch 中返回 ErrNotImplemented；合并后线上零变更 架构师 review 通过，4 项决策已在 issue 上给出： 1. 邀请转化语义 = 首次付款激活 2. 佣金日志类型 = 新增 CommissionTypeLottery=339 3. 家庭组归属 = 穿透到 owner 4. 管理端 IP 白名单 = 不做（推到 nginx/ingress 层） 后续 PR B/C 补真实业务对接 + 用户 API + 后台 CRUD + 集成/并发/概率测试。
77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
package lottery
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import (
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"testing"
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)
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func TestWeightedPicker_EmptyPool(t *testing.T) {
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p := NewWeightedPicker(42)
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if _, err := p.Pick(nil); err != ErrEmptyPool {
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t.Fatalf("expected ErrEmptyPool for nil pool, got %v", err)
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}
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if _, err := p.Pick([]Prize{{Weight: 0}, {Weight: 0}}); err != ErrEmptyPool {
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t.Fatalf("expected ErrEmptyPool when all weights are 0, got %v", err)
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}
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}
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func TestWeightedPicker_SkipsZeroWeight(t *testing.T) {
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p := NewWeightedPicker(1)
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pool := []Prize{
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{Id: 1, Weight: 0}, // 不参与
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{Id: 2, Weight: 100}, // 独占权重
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{Id: 3, Weight: 0}, // 不参与
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}
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for i := 0; i < 200; i++ {
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idx, err := p.Pick(pool)
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if err != nil {
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t.Fatalf("Pick err: %v", err)
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}
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if idx != 1 {
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t.Fatalf("expected idx 1 (only positive weight), got %d", idx)
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}
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}
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}
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func TestWeightedPicker_DistributionCloseToWeights(t *testing.T) {
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p := NewWeightedPicker(2026)
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pool := []Prize{
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{Id: 10, Weight: 10}, // 10/60 ≈ 16.67%
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{Id: 20, Weight: 20}, // 20/60 ≈ 33.33%
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{Id: 30, Weight: 30}, // 30/60 = 50%
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}
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const trials = 60000
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counts := make(map[int]int)
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for i := 0; i < trials; i++ {
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idx, err := p.Pick(pool)
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if err != nil {
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t.Fatalf("Pick err: %v", err)
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}
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counts[idx]++
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}
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// 允许 ±2% 偏差
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expect := []float64{10.0 / 60, 20.0 / 60, 30.0 / 60}
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for i, e := range expect {
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got := float64(counts[i]) / float64(trials)
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if got < e-0.02 || got > e+0.02 {
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t.Fatalf("prize %d: expected %.4f (±0.02), got %.4f", i, e, got)
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}
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}
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}
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func TestWeightedPicker_DeterministicWithFixedSeed(t *testing.T) {
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pool := []Prize{
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{Id: 1, Weight: 1},
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{Id: 2, Weight: 1},
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{Id: 3, Weight: 1},
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}
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a := NewWeightedPicker(7)
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b := NewWeightedPicker(7)
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for i := 0; i < 20; i++ {
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ai, _ := a.Pick(pool)
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bi, _ := b.Pick(pool)
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if ai != bi {
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t.Fatalf("iter %d: seed 7 diverged: a=%d b=%d", i, ai, bi)
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}
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}
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}
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