chore: establish local platform baseline

internal/ratelimit/limiter_integration_test.go

@@ -0,0 +1,40 @@
+package ratelimit
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+)
+
+func TestLimiterEnforcesBurstAndRefills(t *testing.T) {
+	redisAddr := os.Getenv("TEST_REDIS_ADDR")
+	if redisAddr == "" {
+		t.Skip("TEST_REDIS_ADDR is not set")
+	}
+	client := redis.NewClient(&redis.Options{Addr: redisAddr})
+	defer func() { _ = client.Close() }()
+	limiter, err := New(client, "integration", Policy{RatePerSecond: 10, Burst: 2})
+	if err != nil {
+		t.Fatal(err)
+	}
+	identifier := fmt.Sprintf("test-%d", time.Now().UnixNano())
+	for attempt := 0; attempt < 2; attempt++ {
+		result, err := limiter.Allow(context.Background(), "user", identifier)
+		if err != nil || !result.Allowed {
+			t.Fatalf("attempt %d result=%#v err=%v", attempt, result, err)
+		}
+	}
+	limited, err := limiter.Allow(context.Background(), "user", identifier)
+	if err != nil || limited.Allowed || limited.RetryAfter <= 0 {
+		t.Fatalf("limited result=%#v err=%v", limited, err)
+	}
+	time.Sleep(150 * time.Millisecond)
+	refilled, err := limiter.Allow(context.Background(), "user", identifier)
+	if err != nil || !refilled.Allowed {
+		t.Fatalf("refilled result=%#v err=%v", refilled, err)
+	}
+}