testcontainers-java

SimpleNginxTest.java
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package org.testcontainers.junit;
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import lombok.Cleanup;
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import org.junit.BeforeClass;
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import org.junit.Rule;
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import org.junit.Test;
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import org.testcontainers.containers.NginxContainer;
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import org.testcontainers.containers.wait.strategy.HttpWaitStrategy;
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import org.testcontainers.utility.DockerImageName;
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import org.testcontainers.utility.MountableFile;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.PrintStream;
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import java.net.URL;
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import java.net.URLConnection;
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import static org.assertj.core.api.Assertions.assertThat;
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public class SimpleNginxTest {
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    private static final DockerImageName NGINX_IMAGE = DockerImageName.parse("nginx:1.27.0-alpine3.19-slim");
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    private static String tmpDirectory = System.getProperty("user.home") + "/.tmp-test-container";
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    // creatingContainer {
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    @Rule
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    public NginxContainer<?> nginx = new NginxContainer<>(NGINX_IMAGE)
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        .withCopyFileToContainer(MountableFile.forHostPath(tmpDirectory), "/usr/share/nginx/html")
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        .waitingFor(new HttpWaitStrategy());
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    // }
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    @SuppressWarnings({ "Duplicates", "ResultOfMethodCallIgnored" })
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    @BeforeClass
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    public static void setupContent() throws Exception {
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        // addCustomContent {
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        // Create a temporary dir
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        File contentFolder = new File(tmpDirectory);
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        contentFolder.mkdir();
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        contentFolder.deleteOnExit();
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        // And "hello world" HTTP file
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        File indexFile = new File(contentFolder, "index.html");
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        indexFile.deleteOnExit();
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        @Cleanup
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        PrintStream printStream = new PrintStream(new FileOutputStream(indexFile));
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        printStream.println("<html><body>Hello World!</body></html>");
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        // }
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    }
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    @Test
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    public void testSimple() throws Exception {
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        // getFromNginxServer {
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        URL baseUrl = nginx.getBaseUrl("http", 80);
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        assertThat(responseFromNginx(baseUrl))
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            .as("An HTTP GET from the Nginx server returns the index.html from the custom content directory")
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            .contains("Hello World!");
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        // }
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        assertHasCorrectExposedAndLivenessCheckPorts(nginx);
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    }
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    private void assertHasCorrectExposedAndLivenessCheckPorts(NginxContainer<?> nginxContainer) throws Exception {
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        assertThat(nginxContainer.getExposedPorts()).containsExactly(80);
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        assertThat(nginxContainer.getLivenessCheckPortNumbers()).containsExactly(nginxContainer.getMappedPort(80));
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    }
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    private static String responseFromNginx(URL baseUrl) throws IOException {
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        URLConnection urlConnection = baseUrl.openConnection();
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        @Cleanup
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        BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
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        return reader.readLine();
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    }
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}
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testcontainers-java

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