package uniswap

import (
	"math/big"
	"testing"

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

func TestUnifiedConstantsAccuracy(t *testing.T) {
	// Initialize constants
	InitConstants()

	// Test that our global constants have the expected values
	expectedQ96 := new(big.Int).Exp(big.NewInt(2), big.NewInt(96), nil)
	expectedQ192 := new(big.Int).Exp(big.NewInt(2), big.NewInt(192), nil)

	assert.Equal(t, expectedQ96, GetQ96(), "Q96 constant should be 2^96")
	assert.Equal(t, expectedQ192, GetQ192(), "Q192 constant should be 2^192")
	assert.Equal(t, GetLnBase(), 9.999500033329732e-05, "LnBase constant should be ln(1.0001)")
	assert.Equal(t, GetInvLnBase(), 1.0/GetLnBase(), "InvLnBase constant should be 1/ln(1.0001)")
}

func TestUnifiedConstantsPerformance(t *testing.T) {
	// Initialize constants first
	InitConstants()

	// Verify that calling InitConstants multiple times doesn't cause issues
	// (the sync.Once should ensure initialization happens only once)
	for i := 0; i < 10; i++ {
		InitConstants()
	}

	// Ensure the values are still correct after multiple init calls
	expectedQ96 := new(big.Int).Exp(big.NewInt(2), big.NewInt(96), nil)
	assert.Equal(t, expectedQ96, GetQ96(), "Q96 constant should remain consistent after multiple init calls")
}