101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package sse
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import (
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"net/http/httptest"
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"strings"
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"testing"
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"time"
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)
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func TestEventRingPushReplay(t *testing.T) {
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ring := newEventRing(5)
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// 推 3 条
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for i := 1; i <= 3; i++ {
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ring.push(StoredEvent{
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ID: string(rune('0' + i)),
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EventType: "test",
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Data: []byte(`{"n":` + string(rune('0'+i)) + `}`),
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Timestamp: time.Now(),
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})
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}
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// 空 afterID → 首次连接，不回放（缓冲区未满）
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rec := httptest.NewRecorder()
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ring.replay("", rec, rec)
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if rec.Body.Len() > 0 {
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t.Error("首次连接不应回放事件，实际:", rec.Body.String())
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}
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// 有 afterID → 从下一条开始回放
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rec2 := httptest.NewRecorder()
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ring.replay("1", rec2, rec2)
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body := rec2.Body.String()
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if !strings.Contains(body, "id: 2") {
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t.Error("afterID=1 应该回放 id:2，实际:", body)
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}
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if !strings.Contains(body, "id: 3") {
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t.Error("afterID=1 应该回放 id:3，实际:", body)
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}
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if strings.Contains(body, "id: 1") {
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t.Error("afterID=1 不应回放 id:1，实际:", body)
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}
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// 不存在的 afterID → 从头回放全部
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rec3 := httptest.NewRecorder()
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ring.replay("999", rec3, rec3)
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body3 := rec3.Body.String()
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if !strings.Contains(body3, "id: 1") {
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t.Error("不存在的 afterID 应从头回放，实际:", body3)
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}
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}
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func TestEventRingOverflow(t *testing.T) {
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ring := newEventRing(3)
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// 推 5 条（超过容量 3，最旧的 2 条被覆盖）
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for i := 1; i <= 5; i++ {
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ring.push(StoredEvent{
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ID: string(rune('0' + i)),
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EventType: "test",
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Data: []byte(`{}`),
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Timestamp: time.Now(),
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})
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}
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if !ring.full {
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t.Fatal("推了 5 条进容量 3 的缓冲区，应该已满")
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}
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// afterID=2 已被覆盖 → 找不到位置，从头回放全部
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rec := httptest.NewRecorder()
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ring.replay("2", rec, rec)
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body := rec.Body.String()
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if !strings.Contains(body, "id: 3") || !strings.Contains(body, "id: 5") {
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t.Error("缓冲区溢出后应能回放可用范围，实际:", body)
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}
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}
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func TestEventRingConcurrent(t *testing.T) {
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ring := newEventRing(100)
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done := make(chan bool, 10)
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for i := 0; i < 10; i++ {
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go func() {
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for j := 0; j < 200; j++ {
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ring.push(StoredEvent{
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ID: "evt",
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EventType: "test",
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Data: []byte(`{}`),
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Timestamp: time.Now(),
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})
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}
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done <- true
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}()
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}
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for i := 0; i < 10; i++ {
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<-done
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}
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// 只验证不 panic，不验证内容（并发下顺序无意义）
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}
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