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

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Here is the source code for org.camunda.connect.httpclient.HttpConnectorSystemPropertiesTest.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 java.util.HashSet;
import java.util.Set;

import org.apache.http.protocol.HTTP;
import org.camunda.connect.httpclient.impl.HttpConnectorImpl;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

import static com.github.tomakehurst.wiremock.client.WireMock.*;

import com.github.tomakehurst.wiremock.core.WireMockConfiguration;
import com.github.tomakehurst.wiremock.junit.WireMockRule;

/**
 * Since Apache HTTP client makes it extremely hard to test the proper configuration
 * of a http client, this is more of an integration test that checks that a
 * system property is respected
 *
 * @author Thorben Lindhauer
 */
public class HttpConnectorSystemPropertiesTest {

    public static final int PORT = 51234;

    @Rule
    public WireMockRule wireMockRule = new WireMockRule(WireMockConfiguration.wireMockConfig().port(PORT));

    protected Set<String> updatedSystemProperties;

    @Before
    public void setUp() {
        updatedSystemProperties = new HashSet<String>();
        wireMockRule.stubFor(get(urlEqualTo("/")).willReturn(aResponse().withStatus(200)));
    }

    @After
    public void clearCustomSystemProperties() {
        for (String property : updatedSystemProperties) {
            System.getProperties().remove(property);
        }
    }

    public void setSystemProperty(String property, String value) {
        if (!System.getProperties().containsKey(property)) {
            updatedSystemProperties.add(property);
            System.setProperty(property, value);
        } else {
            throw new RuntimeException("Cannot perform test: System property " + property
                    + " is already set. Will not attempt to overwrite this property.");
        }
    }

    @Test
    public void shouldSetUserAgentFromSystemProperty() {
        // given
        setSystemProperty("http.agent", "foo");

        HttpConnector customConnector = new HttpConnectorImpl();

        // when
        customConnector.createRequest().url("http://localhost:" + PORT).get().execute();

        // then
        verify(getRequestedFor(urlEqualTo("/")).withHeader(HTTP.USER_AGENT, equalTo("foo")));

    }
}