tasks2/KonwersjaLiter2/src/test/java/pl/dmcs/FileConverterTest.java

package pl.dmcs;
import org.testng.annotations.Test;
import static org.junit.jupiter.api.Assertions.*;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

public class FileConverterTest {

    @Test
    public void testConvertToUpperCase() throws IOException {
        Path filePath = Paths.get("src/main/resources/test.txt");
        String originalContent = Files.readString(filePath);
        String expectedContent ="TEST\n" +
                "PRZYKLADOWY TEKST MALYMI LITERAMI\n" +
                "12345\n" +
                "ABCDEF\n";

        FileConverter converter = new FileConverter();
        converter.convertToUpperCase(filePath.toString());

        String actualContent = Files.readString(filePath);

        expectedContent = expectedContent.replace("\r\n", "\n");
        actualContent = actualContent.replace("\r\n", "\n");

        assertEquals(expectedContent, actualContent);

        //  Files.writeString(filePath, originalContent);
    }
}