You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: burn_test.go
    path of file: ./repos/lotus/chain/vm
    
    the code of the file until where you have to start completion: // stm: #unit
package vm

import (
	"fmt"
	"testing"

	"github.com/stretchr/testify/
    
func TestGasBurn(t *testing.T) {
	//stm: @BURN_ESTIMATE_GAS_OVERESTIMATION_BURN_001
	tests := []struct {
		used   int64
		limit  int64
		refund int64
		burn   int64
	}{
		{100, 200, 10, 90},
		{100, 150, 30, 20},
		{1000, 1300, 240, 60},
		{500, 700, 140, 60},
		{200, 200, 0, 0},
		{20000, 21000, 1000, 0},
		{0, 2000, 0, 2000},
		{500, 651, 121, 30},
		{500, 5000, 0, 4500},
		{7499e6, 7500e6, 1000000, 0},
		{7500e6 / 2, 7500e6, 375000000, 3375000000},
		{1, 7500e6, 0, 7499999999},
	}

	for _, test := range tests {
		test := test
		t.Run(fmt.Sprintf("%v", test), func(t *testing.T) {
			refund, toBurn := ComputeGasOverestimationBurn(test.used, test.limit)
			assert.Equal(t, test.refund, refund, "refund")
			assert.Equal(t, test.burn, toBurn, "burned")
		})
	}
}