package ezcache_test

import (
	"fmt"
	"testing"
	"time"

	"codeberg.org/danjones000/ezcache"
	"github.com/stretchr/testify/assert"
)

var fetcher ezcache.Fetcher[uint8, string] = func(key uint8) (string, error) { return fmt.Sprintf("%d", key), nil }

func TestNewHappy(t *testing.T) {
	cache, err := ezcache.New(fetcher, 1)

	assert.NoError(t, err)
	assert.NotNil(t, cache)
}

func TestNewNilFetcher(t *testing.T) {
	cache, err := ezcache.New[uint8, string](nil, 1)

	assert.ErrorIs(t, err, ezcache.ErrInvalidFetcher)
	assert.Nil(t, cache)
}

func TestNewBadExpiry(tt *testing.T) {
	testcases := []struct {
		name string
		exp  time.Duration
	}{
		{"zero", 0},
		{"negative", -5},
	}
	for _, tc := range testcases {
		tt.Run(tc.name, func(t *testing.T) {
			cache, err := ezcache.New(fetcher, tc.exp)

			assert.ErrorIs(t, err, ezcache.ErrInvalidExpiry)
			assert.Nil(t, cache)
		})
	}
}