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package org.apache.james.protocols.pop3.core;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.util.Collections;
import java.util.stream.Collectors;

import org.apache.james.protocols.api.Request;
import org.apache.james.protocols.pop3.POP3Session;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

class RetrCmdHandlerTest {

    @ParameterizedTest
    @ValueSource(ints = {8, 16, 32, 64, 128, 256})
    void onCommandShouldNotThrowOnMessageHexNumberOverflow(int pad) {
        POP3Session session = mock(POP3Session.class);
        when(session.getHandlerState()).thenReturn(POP3Session.TRANSACTION);

        Request request = mock(Request.class);
        String overflowedNumber = Collections.nCopies(pad, "\\xff").stream().collect(Collectors.joining());
        when(request.getArgument()).thenReturn(overflowedNumber);

        assertThat(new RetrCmdHandler().onCommand(session, request))
            .isEqualTo(RetrCmdHandler.SYNTAX_ERROR);
    }

    @Test
    void onCommandShouldNotThrowOnMessageDecNumberOverflow() {
        POP3Session session = mock(POP3Session.class);
        when(session.getHandlerState()).thenReturn(POP3Session.TRANSACTION);

        Request request = mock(Request.class);
        String overflowedNumber = Long.toString(Long.MAX_VALUE);
        when(request.getArgument()).thenReturn(overflowedNumber);

        assertThat(new RetrCmdHandler().onCommand(session, request))
            .isEqualTo(RetrCmdHandler.SYNTAX_ERROR);
    }
}
