package tests

import (
	"testing"

	"io/ioutil"

	"encoding/json"

	"github.com/alexellis/faas/gateway/requests"
)

// TestUnmarshallAlert is an exploratory test from TDD'ing the struct to parse a Prometheus alert
func TestUnmarshallAlert(t *testing.T) {
	file, _ := ioutil.ReadFile("./test_alert.json")

	var alert requests.PrometheusAlert
	err := json.Unmarshal(file, &alert)
	if err != nil {
		t.Fatal(err)
	}
	if (len(alert.Status)) == 0 {
		t.Fatal("No status read")
	}
	if (len(alert.Receiver)) == 0 {
		t.Fatal("No status read")
	}
	if (len(alert.Alerts)) == 0 {
		t.Fatal("No alerts read")
	}
	if (len(alert.Alerts[0].Labels.AlertName)) == 0 {
		t.Fatal("No alerts name")
	}
	if (len(alert.Alerts[0].Labels.FunctionName)) == 0 {
		t.Fatal("No function name read")
	}

}