Stirling-PDF/src/test/java/stirling/software/SPDF/utils/ProcessExecutorTest.java

package stirling.software.SPDF.utils;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

public class ProcessExecutorTest {

    private ProcessExecutor processExecutor;

    @BeforeEach
    public void setUp() {
        // Initialize the ProcessExecutor instance
        processExecutor = ProcessExecutor.getInstance(ProcessExecutor.Processes.LIBRE_OFFICE);
    }

    @Test
    public void testRunCommandWithOutputHandling() throws IOException, InterruptedException {
        // Mock the command to execute
        List<String> command = new ArrayList<>();
        command.add("java");
        command.add("-version");

        // Execute the command
        ProcessExecutor.ProcessExecutorResult result =
                processExecutor.runCommandWithOutputHandling(command);

        // Check the exit code and output messages
        assertEquals(0, result.getRc());
        assertNotNull(result.getMessages()); // Check if messages are not null
    }

    @Test
    public void testRunCommandWithOutputHandling_Error() {
        // Mock the command to execute
        List<String> command = new ArrayList<>();
        command.add("nonexistent-command");

        // Execute the command and expect an IOException
        IOException thrown =
                assertThrows(
                        IOException.class,
                        () -> {
                            processExecutor.runCommandWithOutputHandling(command);
                        });

        // Log the actual error message
        System.out.println("Caught IOException: " + thrown.getMessage());

        // Check the exception message to ensure it indicates the command was not found
        String errorMessage = thrown.getMessage();
        assertTrue(
                errorMessage.contains("error=2")
                        || errorMessage.contains("No such file or directory"),
                "Unexpected error message: " + errorMessage);
    }
}