package rushlink

import (
	"net/http"
	"testing"
)

func resolveResponseContentTypeSuccess(t *testing.T, expected string, types []string, acceptVal string) {
	r, err := http.NewRequest("HEAD", "", nil)
	if err != nil {
		panic(err)
	}
	r.Header.Set("Accept", acceptVal)
	got, err := resolveResponseContentType(r, types)
	if err != nil {
		t.Errorf("error: '%v'\n", err)
	}
	if got != expected {
		t.Errorf("error: '%v' should be '%v'\n", got, expected)
	}
}

func resolveResponseContentTypeError(t *testing.T, expected string, types []string, acceptVal string) {
	r, err := http.NewRequest("HEAD", "", nil)
	if err != nil {
		panic(err)
	}
	r.Header.Set("Accept", acceptVal)
	got, err := resolveResponseContentType(r, types)
	if err == nil {
		t.Errorf("expected an error, but got a success: '%v'", got)
	}
	if got != "" {
		t.Errorf("error: return value should be empty, not '%v'", got)
	}
	if err.Error() != expected {
		t.Errorf("wrong error value error: got '%v', want '%v'\n", got, expected)
	}
}

func TestResolveResponseContentType(t *testing.T) {
	resolveResponseContentTypeSuccess(t, "", []string{}, "text/html")
	resolveResponseContentTypeSuccess(t, "text/html", []string{"text/html"}, "")
	resolveResponseContentTypeSuccess(t, "text/html", []string{"text/txt", "text/html"}, "text/txt;q=0.5,text/html")
	resolveResponseContentTypeSuccess(t, "text/html", []string{"text/txt", "text/html"}, "text/txt;q=0.5,text/html;q=0.9")
	resolveResponseContentTypeSuccess(t, "", []string{"text"}, "text/html")
	resolveResponseContentTypeSuccess(t, "", []string{"text/*"}, "image/*")

	// Issue #17
	resolveResponseContentTypeSuccess(t, "*/*", []string{"*/*"}, "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3")

	// Issue #66
	resolveResponseContentTypeError(t, "bad media-range ('*')", []string{"text/plain"}, " *")
}