package envutil

// env_test.go contains backend tests for package behavior, error paths, and regressions.

import (
	"testing"
	"time"

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

// TestString ensures string behavior is handled correctly.
func TestString(t *testing.T) {
	t.Setenv("APP_VALUE", "configured")
	require.Equal(t, "configured", String("APP_VALUE", "fallback"))
}

// TestStringFallback ensures string fallback behavior is handled correctly.
func TestStringFallback(t *testing.T) {
	t.Setenv("APP_VALUE", "")
	require.Equal(t, "fallback", String("APP_VALUE", "fallback"))
}

// TestInt ensures int behavior is handled correctly.
func TestInt(t *testing.T) {
	t.Setenv("APP_PORT", "8080")
	require.Equal(t, 8080, Int("APP_PORT", 3000))
}

// TestIntFallbackInvalid ensures int fallback invalid behavior is handled correctly.
func TestIntFallbackInvalid(t *testing.T) {
	t.Setenv("APP_PORT", "oops")
	require.Equal(t, 3000, Int("APP_PORT", 3000))
}

// TestDuration ensures duration behavior is handled correctly.
func TestDuration(t *testing.T) {
	t.Setenv("APP_TIMEOUT", "7s")
	require.Equal(t, 7*time.Second, Duration("APP_TIMEOUT", time.Second))
}

// TestDurationFallbackInvalid ensures duration fallback invalid behavior is handled correctly.
func TestDurationFallbackInvalid(t *testing.T) {
	t.Setenv("APP_TIMEOUT", "oops")
	require.Equal(t, 2*time.Second, Duration("APP_TIMEOUT", 2*time.Second))
}