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//go:build expr_debug

package vm_test

import (

"testing"

"github.com/stretchr/testify/require"

"github.com/expr-lang/expr/compiler"

"github.com/expr-lang/expr/parser"

"github.com/expr-lang/expr/vm"

)

func TestDebugger(t *testing.T) {

input := `[1, 2]`

node, err := parser.Parse(input)

require.NoError(t, err)

program, err := compiler.Compile(node, nil)

require.NoError(t, err)

debug := vm.Debug()

go func() {

debug.Step()

debug.Step()

debug.Step()

debug.Step()

}()

go func() {

for range debug.Position() {

}

}()

_, err = debug.Run(program, nil)

require.NoError(t, err)

require.Len(t, debug.Stack, 0)

require.Nil(t, debug.Scopes)

}