package Env

import (
	"os"
	"testing"
)

func TestEnvironmentVariable_GetName(t *testing.T) {
	v := EnvironmentVariable("TEST_VAR")
	if v.GetName() != "TEST_VAR" {
		t.Errorf("expected 'TEST_VAR', got '%s'", v.GetName())
	}
}

func TestEnvironmentVariable_GetEnvString(t *testing.T) {
	const envName = "TEST_STRING"
	_ = os.Setenv(envName, "value")
	defer func() {
		_ = os.Unsetenv(envName)
	}()

	v := EnvironmentVariable(envName)
	got := v.GetEnvString("fallback")
	if got != "value" {
		t.Errorf("expected 'value', got '%s'", got)
	}

	_ = os.Unsetenv(envName)
	got = v.GetEnvString("fallback")
	if got != "fallback" {
		t.Errorf("expected 'fallback', got '%s'", got)
	}
}

func TestEnvironmentVariable_GetEnvBool(t *testing.T) {
	const envName = "TEST_BOOL"
	v := EnvironmentVariable(envName)

	_ = os.Setenv(envName, "true")
	if !v.GetEnvBool(false) {
		t.Errorf("expected true for 'true'")
	}
	_ = os.Setenv(envName, "1")
	if !v.GetEnvBool(false) {
		t.Errorf("expected true for '1'")
	}
	_ = os.Setenv(envName, "false")
	if v.GetEnvBool(true) {
		t.Errorf("expected false for 'false'")
	}
	_ = os.Unsetenv(envName)
	if v.GetEnvBool(true) != true {
		t.Errorf("expected fallback true")
	}
}

func TestEnvironmentVariable_GetEnvInt(t *testing.T) {
	const envName = "TEST_INT"
	v := EnvironmentVariable(envName)

	_ = os.Setenv(envName, "42")
	if v.GetEnvInt(envName, 10) != 42 {
		t.Errorf("expected 42")
	}
	_ = os.Unsetenv(envName)
	if v.GetEnvInt(envName, 10) != 10 {
		t.Errorf("expected fallback 10")
	}
}