Testing a redis client against real redis

main_test.go

package main

import (
	"context"
	"testing"

	"github.com/redis/go-redis/v9"
	"github.com/stretchr/testify/assert"
	"github.com/testcontainers/testcontainers-go"
	"github.com/testcontainers/testcontainers-go/wait"
)

func TestWithRedis(t *testing.T) {
	ctx := context.Background()
	req := testcontainers.ContainerRequest{
		Image:        "redis:latest",
		ExposedPorts: []string{"6379/tcp"},
		WaitingFor:   wait.ForLog("Ready to accept connections"),
	}
	redisC, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{
		ContainerRequest: req,
		Started:          true,
	})
	if err != nil {
		t.Error(err)
	}
	defer func() {
		if err := redisC.Terminate(ctx); err != nil {
			t.Fatalf("failed to terminate container: %s", err.Error())
		}
	}()

	endpoint, err := redisC.Endpoint(ctx, "")
	if err != nil {
		t.Error(err)
	}

	client := redis.NewClient(&redis.Options{
		Addr: endpoint,
	})

	client.Set(ctx, "FOO", "BAR", 0)
	result := client.Get(ctx, "FOO")
	assert.Equal(t, "BAR", result.Val())
}