RequestEntityProxyTest.java

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.hc.client5.http.impl.classic;

import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.never;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

import org.apache.hc.core5.http.ClassicHttpRequest;
import org.apache.hc.core5.http.HttpEntity;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Mockito;

class RequestEntityProxyTest {

    @Test
    void testEnhanceWrapsNonRepeatableEntity() {
        final HttpEntity entity = Mockito.mock(HttpEntity.class);
        Mockito.when(entity.isRepeatable()).thenReturn(false);

        final ClassicHttpRequest request = Mockito.mock(ClassicHttpRequest.class);
        Mockito.when(request.getEntity()).thenReturn(entity);

        RequestEntityProxy.enhance(request);

        final ArgumentCaptor<HttpEntity> captor = ArgumentCaptor.forClass(HttpEntity.class);
        Mockito.verify(request).setEntity(captor.capture());
        final HttpEntity proxy = captor.getValue();

        Assertions.assertInstanceOf(RequestEntityProxy.class, proxy, "Entity should be wrapped as RequestEntityProxy");
        Assertions.assertSame(entity, ((RequestEntityProxy) proxy).getOriginal(), "The proxy should wrap the original entity");
    }

    @Test
    void testEnhanceDoesNotWrapRepeatableEntity() {
        final HttpEntity entity = Mockito.mock(HttpEntity.class);
        Mockito.when(entity.isRepeatable()).thenReturn(true);

        final ClassicHttpRequest request = Mockito.mock(ClassicHttpRequest.class);
        Mockito.when(request.getEntity()).thenReturn(entity);

        RequestEntityProxy.enhance(request);

        Mockito.verify(request, never()).setEntity(any(HttpEntity.class));
    }

    @Test
    void testIsRepeatableBehavior() throws IOException {
        final HttpEntity entity = Mockito.mock(HttpEntity.class);
        Mockito.when(entity.isRepeatable()).thenReturn(false);

        final RequestEntityProxy proxy = new RequestEntityProxy(entity);

        Assertions.assertTrue(proxy.isRepeatable(), "Proxy should be repeatable before consumption");

        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        proxy.writeTo(out);

        Assertions.assertFalse(proxy.isRepeatable(), "Proxy should not be repeatable after consumption");
    }
}