im-kulikov/helium

package settings

import (
    "os"
    "testing"

    "github.com/spf13/viper"
    "github.com/stretchr/testify/require"
)

func TestInit(t *testing.T) {
    t.Run("should be ok without file", func(t *testing.T) {
        cfg := &Core{}

        v, err := New(cfg)
        require.NoError(t, err)
        require.Equal(t, v, Viper())
        require.IsType(t, viper.New(), v)
    })

    t.Run("should be ok with temp file", func(t *testing.T) {
        cfg := &Core{}

        tmpFile, err := os.CreateTemp(t.TempDir(), "example")
        require.NoError(t, err)

        cfg.File = tmpFile.Name()
        v, err := New(cfg)
        require.NoError(t, err)
        require.IsType(t, viper.New(), v)
    })

    t.Run("should fail", func(t *testing.T) {
        cfg := &Core{}

        cfg.File = "unknown file"
        v, err := New(cfg)
        require.Error(t, err)
        require.Nil(t, v)
    })
}