Go tests are not generated when imports are needed for types inside a function body

[egiptipavel]

Description

Tests are not generated if there are types in the function body that are not among the parameters, result parameters of the function and the following list of imports: "io", "context", "encoding/json", "errors", "fmt", "log", "math", "net", "reflect", "strconv", "strings", "testing", "time", "unsafe".

To Reproduce

Steps to reproduce the behavior:

1. Write the following function:

import "math/cmplx"

func Abs(n complex128) float64 {
	return cmplx.Abs(n)
}

2. Use plugin to generate tests

Expected behavior

Similar to this file should be generated.

import (
	"github.com/stretchr/testify/assert"
	"testing"
)

func TestAbsByUtGoFuzzer(t *testing.T) {
	actualVal := Abs(complex(1.0, 1.0))

	assert.Equal(t, 1.4142135623730951, actualVal)
}

Actual behavior

Empty file is generated.

Visual proofs (screenshots, logs, images)

| UtBot - GoTestCasesGenerator      | Fuzzing for function [Abs] - started
| UtBot - GoTestCasesGenerator      | Error in flow: Timeout exceeded: Worker not connected. Process output: # simple [simple.test]
.\utbot_go_worker_samples_test.go:637:9: undefined: cmplx
FAIL	simple [build failed]

| UtBot - GoTestCasesGenerator      | Fuzzing for function [Abs] - completed in 10027 ms. Generated 0 test cases

Environment

There is no specific environment.

Additional context

There is no additional context.