im-kulikov/helium

package settings

import (
    "testing"

    "github.com/stretchr/testify/require"
    "go.uber.org/dig"
)

type (
    coreProviderType = func() *Core
    diProviderType   = func() *dig.Container
)

func TestApp(t *testing.T) {
    t.Run("check di provider", func(t *testing.T) {
        di := dig.New()
        provider := DIProvider(di)
        require.NotNil(t, provider)
        require.IsType(t, diProviderType(nil), provider.Constructor)
        diProvider, ok := provider.Constructor.(diProviderType)
        require.True(t, ok)
        require.Equal(t, di, diProvider())
    })

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

        provider := cfg.Provider()
        require.NotNil(t, provider)
        require.IsType(t, coreProviderType(nil), provider.Constructor)
        appProvider, ok := provider.Constructor.(coreProviderType)
        require.True(t, ok)
        require.Equal(t, cfg, appProvider())
    })

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

        cases := []string{"bad", "toml", "yml", "yaml"}
        for _, item := range cases {
            cfg.Type = item

            if item == "bad" {
                item = "yaml"
            }

            require.Equal(t, item, cfg.SafeType())
        }
    })
}