func TestNewUVWithInvalidHttpClient(t *testing.T) {
	uv, err := NewUV(os.Getenv("OWM_API_KEY"), WithHttpClient(nil))
	if err == errInvalidHttpClient {
		t.Logf("Received expected bad client error. message: %s", err.Error())
	} else if err != nil {
		t.Errorf("Expected %v, but got %v", errInvalidHttpClient, err)
	}
	if uv != nil {
		t.Errorf("Expected nil, but got %v", uv)
	}
}
TestNewUVWithInvalidHttpClient will verify that returns an error with
invalid http client
package openweathermap
import (
	"net/http"
	"os"
	"reflect"
	"testing"
	"time"
)
var coords = &Coordinates{
	Longitude: 53.343497,
	Latitude:  -6.288379,
}
func TestNewUV(t *testing.T) {
	uv, err := NewUV(os.Getenv("OWM_API_KEY"))
	if err != nil {
		t.Error(err)
	}
	if reflect.TypeOf(uv).String() != "*openweathermap.UV" {
		t.Error("incorrect data type returned")
	}
}
func TestNewUVWithCustomHttpClient(t *testing.T) {
	hc := http.DefaultClient
	hc.Timeout = time.Duration(1) * time.Second
	uv, err := NewUV(os.Getenv("OWM_API_KEY"), WithHttpClient(hc))
	if err != nil {
		t.Error(err)
	}
	if reflect.TypeOf(uv).String() != "*openweathermap.UV" {
		t.Error("incorrect data type returned")
	}
	expected := time.Duration(1) * time.Second
	if uv.client.Timeout != expected {
		t.Errorf("Expected Duration %v, but got %v", expected, uv.client.Timeout)
	}
}
func TestNewUVWithInvalidOptions(t *testing.T) {
	optionsPattern := [][]Option{
		{nil},
		{nil, nil},
		{WithHttpClient(&http.Client{}), nil},
		{nil, WithHttpClient(&http.Client{})},
	}
	for _, options := range optionsPattern {
		c, err := NewUV(os.Getenv("OWM_API_KEY"), options...)
		if err == errInvalidOption {
			t.Logf("Received expected invalid option error. message: %s", err.Error())
		} else if err != nil {
			t.Errorf("Expected %v, but got %v", errInvalidOption, err)
		}
		if c != nil {
			t.Errorf("Expected nil, but got %v", c)
		}
	}
}