Use testcontainers for integration tests

web-search-engines/langchain4j-community-web-search-engine-searxng/pom.xml

@@ -70,6 +70,18 @@
             <type>test-jar</type>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>testcontainers</artifactId>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <scope>test</scope>
+        </dependency>
 
     </dependencies>
 

web-search-engines/langchain4j-community-web-search-engine-searxng/src/main/java/dev/langchain4j/community/web/search/searxng/SearXNGWebSearchEngine.java

@@ -65,6 +65,7 @@ public static class Builder {
 
 		/**
 		 * @param baseUrl base URL of the SearXNG instance e.g. http://localhost:8080
+		 * @return {@link Builder}
 		 */
 		public Builder baseUrl(String baseUrl) {
 			this.baseUrl = baseUrl;

web-search-engines/langchain4j-community-web-search-engine-searxng/src/test/java/dev/langchain4j/community/web/search/searxng/SearXNGWebSearchEngineIT.java

@@ -1,17 +1,39 @@
 package dev.langchain4j.community.web.search.searxng;
 
-import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.testcontainers.containers.GenericContainer;
+import org.testcontainers.containers.wait.strategy.Wait;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+import org.testcontainers.utility.DockerImageName;
+import org.testcontainers.utility.MountableFile;
 
 import dev.langchain4j.web.search.WebSearchEngine;
 import dev.langchain4j.web.search.WebSearchEngineIT;
 
-@EnabledIfEnvironmentVariable(named = "SEARXNG_BASE_URL", matches = ".+")
+@Testcontainers
 class SearXNGWebSearchEngineIT extends WebSearchEngineIT {
-
-    WebSearchEngine webSearchEngine = SearXNGWebSearchEngine.builder().baseUrl(System.getenv("SEARXNG_BASE_URL")).build();
-
+	@SuppressWarnings("resource")
+	@Container
+	static GenericContainer<?> searxng = new GenericContainer<>(DockerImageName.parse("searxng/searxng:latest"))
+            .withExposedPorts(8080)
+            .withCopyFileToContainer(MountableFile.forClasspathResource("settings.yml"), "/usr/local/searxng/searx/settings.yml")
+            .waitingFor(Wait.forLogMessage(".*spawned uWSGI worker.*\\n", 1));
+
     @Override
     protected WebSearchEngine searchEngine() {
-        return webSearchEngine;
+    	return SearXNGWebSearchEngine.builder().baseUrl("http://" + searxng.getHost() + ":" + searxng.getMappedPort(8080)).build();
+    }
+
+    @BeforeAll
+    static void startContainers() {
+      searxng.start();
+    }
+
+    @AfterAll
+    static void stopContainers() {
+       	searxng.stop();
+       	searxng.close();
     }
 }