package com.proofpoint.http.client;
import com.google.common.collect.ImmutableListMultimap;
import com.proofpoint.http.client.testing.TestingResponse;
import com.proofpoint.json.JsonCodec;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.io.IOException;
import java.io.InputStream;
import static com.google.common.base.Charsets.UTF_8;
import static com.google.common.net.MediaType.JSON_UTF_8;
import static com.google.common.net.MediaType.PLAIN_TEXT_UTF_8;
import static com.proofpoint.http.client.HttpStatus.INTERNAL_SERVER_ERROR;
import static com.proofpoint.http.client.HttpStatus.OK;
import static com.proofpoint.http.client.JsonResponseHandler.createJsonResponseHandler;
import static com.proofpoint.http.client.TestFullJsonResponseHandler.User;
import static com.proofpoint.http.client.testing.TestingResponse.contentType;
import static com.proofpoint.http.client.testing.TestingResponse.mockResponse;
import static com.proofpoint.testing.Assertions.assertInstanceOf;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertSame;
import static org.testng.Assert.fail;
public class TestJsonResponseHandler
{
private JsonCodec<User> codec;
private JsonResponseHandler<User> handler;
@BeforeMethod
public void setUp()
{
codec = JsonCodec.jsonCodec(User.class);
handler = createJsonResponseHandler(codec);
}
@Test
public void testValidJson()
{
User user = new User("Joe", 25);
User response = handler.handle(null, mockResponse(OK, JSON_UTF_8, codec.toJson(user)));
assertEquals(response.getName(), user.getName());
assertEquals(response.getAge(), user.getAge());
}
@Test
public void testInvalidJson()
{
String json = "{\"age\": \"foo\"}";
try {
handler.handle(null, mockResponse(OK, JSON_UTF_8, json));
}
catch (IllegalArgumentException e) {
assertEquals(e.getMessage(), "Unable to create " + User.class + " from JSON response:\n" + json);
assertInstanceOf(e.getCause(), IllegalArgumentException.class);
assertEquals(e.getCause().getMessage(), "Invalid [simple type, class com.proofpoint.http.client.TestFullJsonResponseHandler$User] json bytes");
}
}
@Test(expectedExceptions = UnexpectedResponseException.class, expectedExceptionsMessageRegExp = "Expected application/json response from server but got text/plain; charset=utf-8")
public void testNonJsonResponse()
{
handler.handle(null, mockResponse(OK, PLAIN_TEXT_UTF_8, "hello"));
}
@Test(expectedExceptions = UnexpectedResponseException.class, expectedExceptionsMessageRegExp = "Content-Type is not set for response")
public void testMissingContentType()
{
handler.handle(null, new TestingResponse(OK, ImmutableListMultimap.<String, String>of(), "hello".getBytes(UTF_8)));
}
@Test(expectedExceptions = UnexpectedResponseException.class)
public void testJsonErrorResponse()
{
String json = "{\"error\": true}";
handler.handle(null, mockResponse(INTERNAL_SERVER_ERROR, JSON_UTF_8, json));
}
@Test
public void testJsonReadException()
throws IOException
{
InputStream inputStream = mock(InputStream.class);
IOException expectedException = new IOException("test exception");
when(inputStream.read()).thenThrow(expectedException);
when(inputStream.read(any(byte[].class))).thenThrow(expectedException);
when(inputStream.read(any(byte[].class), anyInt(), anyInt())).thenThrow(expectedException);
try {
handler.handle(null, new TestingResponse(OK, contentType(JSON_UTF_8), inputStream));
fail("expected exception");
}
catch (RuntimeException e) {
assertEquals(e.getMessage(), "Error reading JSON response from server");
assertSame(e.getCause(), expectedException);
}
}
}