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: detector_test.go
    path of file: ./repos/arduino-cli/internal/arduino/builder/internal/detector
    
    the code of the file until where you have to start completion: // This file is part of arduino-cli.
//
// Copyright 2020 ARDUINO SA (http://www.arduino.cc/)
//
// This software is released under the GNU General Public License version 3,
// which cov
    
func TestIncludesFinderWithRegExpPaddedIncludes3(t *testing.T) {
	output := "/some/path/sketch.ino:1:33: fatal error: SPI.h: No such file or directory\n" +
		"compilation terminated.\n"

	include := detector.IncludesFinderWithRegExp(output)

	require.Equal(t, "SPI.h", include)
}