birthdaybot/model/config_test.go

package model

import (
	"io"
	"os"
	"testing"

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

func TestReadConfig(t *testing.T) {
	t.Run("should correctly read a configuration file", func(t *testing.T) {
		f, err := os.CreateTemp("", "birthdaybot-")
		require.NoError(t, err)
		defer os.Remove(f.Name())

		_, werr := io.WriteString(f, "---\nbirthdays:\n  file: birthday.csv")
		require.NoError(t, werr)
		require.NoError(t, f.Close())

		config, err := ReadConfig(f.Name())
		require.NoError(t, err)
		require.Equal(t, "birthday.csv", config.Birthdays.File)
	})

	t.Run("should fail if the file doesn't exist", func(t *testing.T) {
		f, err := os.CreateTemp("", "birthdaybot-")
		require.NoError(t, err)
		f.Close()
		os.Remove(f.Name())

		config, err := ReadConfig(f.Name())
		require.Error(t, err)
		require.Nil(t, config)
	})
}