chore: import upstream snapshot with attribution

cache/redis/redis_test.go

@@ -0,0 +1,88 @@
+package redis
+
+import (
+	"context"
+	"os"
+	"testing"
+	"time"
+
+	"go-micro.dev/v6/cache"
+)
+
+var (
+	ctx              = context.TODO()
+	key  string      = "redistestkey"
+	val  interface{} = "hello go-micro"
+	addr             = cache.WithAddress("redis://127.0.0.1:6379")
+)
+
+// TestMemCache tests the in-memory cache implementation.
+func TestCache(t *testing.T) {
+	if len(os.Getenv("LOCAL")) == 0 {
+		t.Skip()
+	}
+
+	t.Run("CacheGetMiss", func(t *testing.T) {
+		if _, _, err := NewRedisCache(addr).Get(ctx, key); err == nil {
+			t.Error("expected to get no value from cache")
+		}
+	})
+
+	t.Run("CacheGetHit", func(t *testing.T) {
+		c := NewRedisCache(addr)
+
+		if err := c.Put(ctx, key, val, 0); err != nil {
+			t.Error(err)
+		}
+
+		if a, _, err := c.Get(ctx, key); err != nil {
+			t.Errorf("Expected a value, got err: %s", err)
+		} else if string(a.([]byte)) != val {
+			t.Errorf("Expected '%v', got '%v'", val, a)
+		}
+	})
+
+	t.Run("CacheGetExpired", func(t *testing.T) {
+		c := NewRedisCache(addr)
+		d := 20 * time.Millisecond
+
+		if err := c.Put(ctx, key, val, d); err != nil {
+			t.Error(err)
+		}
+
+		<-time.After(25 * time.Millisecond)
+		if _, _, err := c.Get(ctx, key); err == nil {
+			t.Error("expected to get no value from cache")
+		}
+	})
+
+	t.Run("CacheGetValid", func(t *testing.T) {
+		c := NewRedisCache(addr)
+		e := 25 * time.Millisecond
+
+		if err := c.Put(ctx, key, val, e); err != nil {
+			t.Error(err)
+		}
+
+		<-time.After(20 * time.Millisecond)
+		if _, _, err := c.Get(ctx, key); err != nil {
+			t.Errorf("expected a value, got err: %s", err)
+		}
+	})
+
+	t.Run("CacheDeleteHit", func(t *testing.T) {
+		c := NewRedisCache(addr)
+
+		if err := c.Put(ctx, key, val, 0); err != nil {
+			t.Error(err)
+		}
+
+		if err := c.Delete(ctx, key); err != nil {
+			t.Errorf("Expected to delete an item, got err: %s", err)
+		}
+
+		if _, _, err := c.Get(ctx, key); err == nil {
+			t.Errorf("Expected error")
+		}
+	})
+}