feat: implement confirmer

pkg/confirmer/confirmer_test.go

@@ -0,0 +1,50 @@
+package confirmer
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestConfirmerYes(t *testing.T) {
+	c := New()
+
+	req := c.NewRequest(1 * time.Second)
+
+	go func() {
+		assert.NoError(t, c.SetResponse(req.ID(), true))
+	}()
+
+	res, err := req.Result()
+	assert.NoError(t, err)
+	assert.True(t, res)
+}
+
+func TestConfirmerNo(t *testing.T) {
+	c := New()
+
+	req := c.NewRequest(1 * time.Second)
+
+	go func() {
+		assert.NoError(t, c.SetResponse(req.ID(), false))
+	}()
+
+	res, err := req.Result()
+	assert.NoError(t, err)
+	assert.False(t, res)
+}
+
+func TestConfirmerTimeout(t *testing.T) {
+	c := New()
+
+	req := c.NewRequest(1 * time.Second)
+
+	go func() {
+		time.Sleep(2 * time.Second)
+		assert.NoError(t, c.SetResponse(req.ID(), true))
+	}()
+
+	_, err := req.Result()
+	assert.Error(t, err)
+}