ntfy/util/lookup_cache_test.go

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2023-01-18 21:50:06 +01:00
package util
import (
"errors"
"github.com/stretchr/testify/require"
"testing"
"time"
)
func TestLookupCache_Success(t *testing.T) {
values, i := []string{"first", "second"}, 0
c := NewLookupCache[string](func() (string, error) {
time.Sleep(300 * time.Millisecond)
v := values[i]
i++
return v, nil
}, 500*time.Millisecond)
start := time.Now()
v, err := c.Value()
require.Nil(t, err)
require.Equal(t, values[0], v)
require.True(t, time.Since(start) >= 300*time.Millisecond)
start = time.Now()
v, err = c.Value()
require.Nil(t, err)
require.Equal(t, values[0], v)
require.True(t, time.Since(start) < 200*time.Millisecond)
time.Sleep(550 * time.Millisecond)
start = time.Now()
v, err = c.Value()
require.Nil(t, err)
require.Equal(t, values[1], v)
require.True(t, time.Since(start) >= 300*time.Millisecond)
start = time.Now()
v, err = c.Value()
require.Nil(t, err)
require.Equal(t, values[1], v)
require.True(t, time.Since(start) < 200*time.Millisecond)
}
func TestLookupCache_Error(t *testing.T) {
c := NewLookupCache[string](func() (string, error) {
time.Sleep(200 * time.Millisecond)
return "", errors.New("some error")
}, 500*time.Millisecond)
start := time.Now()
v, err := c.Value()
require.NotNil(t, err)
require.Equal(t, "", v)
require.True(t, time.Since(start) >= 200*time.Millisecond)
start = time.Now()
v, err = c.Value()
require.NotNil(t, err)
require.Equal(t, "", v)
require.True(t, time.Since(start) >= 200*time.Millisecond)
}