package testutil

import (
	"os"
	"testing"

	"github.com/stretchr/testify/require"
)

func TestDockerHost(t *testing.T) {
	t.Run("no DOCKER_HOST set", func(t *testing.T) {
		err := os.Unsetenv("DOCKER_HOST")
		require.NoError(t, err)

		host := GetLocalHost()

		if host != "localhost" {
			t.Fatalf("Host should be localhost when DOCKER_HOST is not set. Current value [%s]", host)
		}
	})

	t.Run("DOCKER_HOST with IP address only", func(t *testing.T) {
		t.Setenv("DOCKER_HOST", "1.1.1.1")

		host := GetLocalHost()
		if host != "1.1.1.1" {
			t.Fatalf("Host should take DOCKER_HOST value when set. Current value is [%s] and DOCKER_HOST is [%s]", host, os.Getenv("DOCKER_HOST"))
		}
	})

	t.Run("DOCKER_HOST with protocol, IP address, and port", func(t *testing.T) {
		t.Setenv("DOCKER_HOST", "tcp://1.1.1.1:8080")

		host := GetLocalHost()
		if host != "1.1.1.1" {
			t.Fatalf("Host should take DOCKER_HOST value when set. Current value is [%s] and DOCKER_HOST is [%s]", host, os.Getenv("DOCKER_HOST"))
		}
	})
}