org.camunda.connect.httpclient.HttpConnectorTest.java Source code

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Here is the source code for org.camunda.connect.httpclient.HttpConnectorTest.java

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/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.camunda.connect.httpclient;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.fail;

import java.io.IOException;

import org.apache.http.Header;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpHead;
import org.apache.http.client.methods.HttpOptions;
import org.apache.http.client.methods.HttpPatch;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.client.methods.HttpTrace;
import org.camunda.commons.utils.IoUtil;
import org.camunda.connect.ConnectorRequestException;
import org.camunda.connect.Connectors;
import org.camunda.connect.httpclient.impl.HttpConnectorImpl;
import org.camunda.connect.impl.DebugRequestInterceptor;
import org.camunda.connect.spi.Connector;
import org.junit.Before;
import org.junit.Test;

public class HttpConnectorTest {

    public static final String EXAMPLE_URL = "http://camunda.org/example";
    public static final String EXAMPLE_CONTENT_TYPE = "application/json";
    public static final String EXAMPLE_PAYLOAD = "camunda";

    protected HttpConnector connector;
    protected DebugRequestInterceptor interceptor;

    @Before
    public void createConnector() {
        connector = new HttpConnectorImpl();
        interceptor = new DebugRequestInterceptor(false);
        connector.addRequestInterceptor(interceptor);
    }

    @Test
    public void shouldDiscoverConnector() {
        Connector http = Connectors.getConnector(HttpConnector.ID);
        assertThat(http).isNotNull();
    }

    @Test
    public void shouldFailWithoutMethod() {
        try {
            connector.createRequest().url("localhost").execute();
            fail("No method specified");
        } catch (ConnectorRequestException e) {
            // expected
        }
    }

    @Test
    public void shouldFailWithoutUrl() {
        try {
            connector.createRequest().execute();
            fail("No url specified");
        } catch (ConnectorRequestException e) {
            // expected
        }
    }

    @Test
    public void shouldCreateHttpGetRequest() {
        connector.createRequest().url(EXAMPLE_URL).get().execute();
        verifyHttpRequest(HttpGet.class);
    }

    @Test
    public void shouldCreateHttpPostRequest() {
        connector.createRequest().url(EXAMPLE_URL).post().execute();
        verifyHttpRequest(HttpPost.class);
    }

    @Test
    public void shouldCreateHttpPutRequest() {
        connector.createRequest().url(EXAMPLE_URL).put().execute();
        verifyHttpRequest(HttpPut.class);
    }

    @Test
    public void shouldCreateHttpDeleteRequest() {
        connector.createRequest().url(EXAMPLE_URL).delete().execute();
        verifyHttpRequest(HttpDelete.class);
    }

    @Test
    public void shouldCreateHttpPatchRequest() {
        connector.createRequest().url(EXAMPLE_URL).patch().execute();
        verifyHttpRequest(HttpPatch.class);
    }

    @Test
    public void shouldCreateHttpHeadRequest() {
        connector.createRequest().url(EXAMPLE_URL).head().execute();
        verifyHttpRequest(HttpHead.class);
    }

    @Test
    public void shouldCreateHttpOptionsRequest() {
        connector.createRequest().url(EXAMPLE_URL).options().execute();
        verifyHttpRequest(HttpOptions.class);
    }

    @Test
    public void shouldCreateHttpTraceRequest() {
        connector.createRequest().url(EXAMPLE_URL).trace().execute();
        verifyHttpRequest(HttpTrace.class);
    }

    @Test
    public void shouldSetUrlOnHttpRequest() {
        connector.createRequest().url(EXAMPLE_URL).get().execute();
        HttpGet request = interceptor.getTarget();
        assertThat(request.getURI().toASCIIString()).isEqualTo(EXAMPLE_URL);
    }

    @Test
    public void shouldSetContentTypeOnHttpRequest() {
        connector.createRequest().url(EXAMPLE_URL).contentType(EXAMPLE_CONTENT_TYPE).get().execute();
        HttpGet request = interceptor.getTarget();
        Header[] headers = request.getHeaders(HttpBaseRequest.HEADER_CONTENT_TYPE);
        assertThat(headers).hasSize(1);
        assertThat(headers[0].getName()).isEqualTo(HttpBaseRequest.HEADER_CONTENT_TYPE);
        assertThat(headers[0].getValue()).isEqualTo(EXAMPLE_CONTENT_TYPE);
    }

    @Test
    public void shouldSetHeadersOnHttpRequest() {
        connector.createRequest().url(EXAMPLE_URL).header("foo", "bar").header("hello", "world").get().execute();
        HttpGet request = interceptor.getTarget();
        Header[] headers = request.getAllHeaders();
        assertThat(headers).hasSize(2);
    }

    @Test
    public void shouldSetPayloadOnHttpRequest() throws IOException {
        connector.createRequest().url(EXAMPLE_URL).payload(EXAMPLE_PAYLOAD).post().execute();
        HttpPost request = interceptor.getTarget();
        String content = IoUtil.inputStreamAsString(request.getEntity().getContent());
        assertThat(content).isEqualTo(EXAMPLE_PAYLOAD);
    }

    protected void verifyHttpRequest(Class<? extends HttpRequestBase> requestClass) {
        Object target = interceptor.getTarget();
        assertThat(target).isInstanceOf(requestClass);

        HttpRequest request = interceptor.getRequest();
        HttpRequestBase requestBase = (HttpRequestBase) target;
        assertThat(requestBase.getMethod()).isEqualTo(request.getMethod());
    }

}