package validate

import (
	"errors"
	"fmt"
	"regexp"
	"testing"
)

func ExampleMatch() {
	slug := Match(regexp.MustCompile(`^[a-z0-9-]+$`))
	fmt.Println(slug("Not A Slug"))
	// Output: invalid format
}

func TestMatch(t *testing.T) {
	v := Match(regexp.MustCompile(`^[a-z0-9-]+$`))

	testCases := map[string]error{
		"hello-world-123": nil,
		"abc":             nil,

		"Hello":     ErrNoMatch,
		"has space": ErrNoMatch,
		"":          ErrNoMatch,
	}

	for input, want := range testCases {
		t.Run(input, func(t *testing.T) {
			if got := v(input); !errors.Is(got, want) {
				t.Error("got", got, "want", want)
			}
		})
	}
}