[Testing][JShellAPI] Setting first integration test for /eval endpoint;

Note: this includes changes and improvements in gradle.build files;

Author: firasrg

Diff for: JShellAPI/build.gradle

@@ -14,26 +14,18 @@ dependencies {
     implementation 'com.github.docker-java:docker-java-core:3.3.6'
 
     testImplementation('org.springframework.boot:spring-boot-starter-test') {
-        configurations {
-            all {
-                exclude group: 'org.springframework.boot', module: 'spring-boot-starter-logging'
-                exclude group: 'ch.qos.logback', module: 'logback-classic'
-                exclude group: 'org.apache.logging.log4j', module: 'log4j-to-slf4j'
-            }
-        }
+        exclude group: 'ch.qos.logback', module: 'logback-classic'
     }
-    testImplementation gradleTestKit()
+    testImplementation 'org.springframework.boot:spring-boot-starter-webflux'
 
     annotationProcessor "org.springframework.boot:spring-boot-configuration-processor"
 
 }
 
-def imageName = 'togetherjava.org:5001/togetherjava/jshellbackend:master' ?: 'latest';
-
 jib {
     from.image = 'eclipse-temurin:21'
     to {
-        image = imageName
+        image = 'togetherjava.org:5001/togetherjava/jshellbackend:master' ?: 'latest'
         auth {
             username = System.getenv('ORG_REGISTRY_USER') ?: ''
             password = System.getenv('ORG_REGISTRY_PASSWORD') ?: ''
@@ -51,41 +43,28 @@ shadowJar {
     archiveVersion.set('')
 }
 
-tasks.register('buildDockerImage') {
-    group = 'Docker'
-    description = 'builds jshellwrapper as docker image'
-    dependsOn jibDockerBuild
-    doFirst{
-        println('creating docker image...')
-    }
-    doLast{
-        println('docker image is ready for use')
+def jshellWrapperImageName = rootProject.ext.jShellWrapperImageName;
+
+processResources {
+    filesMatching('application.yaml') {
+        expand(jShellWrapperImageName: jshellWrapperImageName)
     }
 }
 
-tasks.register('removeDockerImage', Exec) {
-    group = 'Docker'
-    description = 'removes jshellwrapper image'
-    commandLine 'docker', 'rmi', '-f', imageName
-    doLast{
-        println('docker image has been removed')
-    }
+
+def taskBuildDockerImage = tasks.register('buildDockerImage') {
+    group = 'docker'
+    description = 'builds jshellwrapper as docker image'
+    dependsOn project(':JShellWrapper').tasks.named('jibDockerBuild')
 }
 
-tasks.named('test') {
-    dependsOn tasks.named('buildDockerImage')
+def taskRemoveDockerImage = tasks.register('removeDockerImage', Exec) {
+    group = 'docker'
+    description = 'removes jshellwrapper image'
+    commandLine 'docker', 'rmi', '-f', jshellWrapperImageName
+}
 
-    doFirst {
-        try {
-            println 'Running JShellAPI tests...'
-        } catch (Exception e) {
-            println 'JShellAPI tests failed'
-            tasks.named('removeDockerImage').get().execute()
-            throw e
-        }
-    }
-    doLast {
-        println 'JShellAPI tests completed.'
-    }
-    finalizedBy tasks.named('removeDockerImage')
+test {
+    dependsOn taskBuildDockerImage
+    finalizedBy taskRemoveDockerImage
 }

Diff for: JShellAPI/src/main/java/org/togetherjava/jshellapi/rest/ApiEndpoints.java

@@ -0,0 +1,7 @@
+package org.togetherjava.jshellapi.rest;
+
+public final class ApiEndpoints {
+    private ApiEndpoints() {}
+
+    public static final String EVALUATE_CODE_SNIPPET = "/jshell/eval";
+}

Diff for: JShellAPI/src/main/java/org/togetherjava/jshellapi/service/DockerService.java

@@ -7,9 +7,11 @@
 import com.github.dockerjava.core.DefaultDockerClientConfig;
 import com.github.dockerjava.core.DockerClientImpl;
 import com.github.dockerjava.httpclient5.ApacheDockerHttpClient;
+import jakarta.el.PropertyNotFoundException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.DisposableBean;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.lang.Nullable;
 import org.springframework.stereotype.Service;
 
@@ -29,6 +31,9 @@ public class DockerService implements DisposableBean {
 
     private final DockerClient client;
 
+    @Value("${jshell-wrapper.image-name}")
+    private String jshellWrapperImageName;
+
     public DockerService(Config config) {
         DefaultDockerClientConfig clientConfig =
                 DefaultDockerClientConfig.createDefaultConfigBuilder().build();
@@ -59,22 +64,33 @@ private void cleanupLeftovers(UUID currentId) {
 
     public String spawnContainer(long maxMemoryMegs, long cpus, @Nullable String cpuSetCpus,
             String name, Duration evalTimeout, long sysoutLimit) throws InterruptedException {
-        String imageName = "togetherjava.org:5001/togetherjava/jshellwrapper";
+        String imageName = Optional.ofNullable(this.jshellWrapperImageName)
+            .orElseThrow(() -> new PropertyNotFoundException(
+                    "unable to find jshellWrapper image name property"));
+
+        String[] imageNameParts = imageName.split(":master");
+
+        if (imageNameParts.length != 1) {
+            throw new IllegalArgumentException("invalid jshellWrapper image name");
+        }
+
+        String baseImageName = imageNameParts[0];
+
         boolean presentLocally = client.listImagesCmd()
-            .withFilter("reference", List.of(imageName))
+            .withFilter("reference", List.of(baseImageName))
             .exec()
             .stream()
             .flatMap(it -> Arrays.stream(it.getRepoTags()))
             .anyMatch(it -> it.endsWith(":master"));
 
         if (!presentLocally) {
-            client.pullImageCmd(imageName)
+            client.pullImageCmd(baseImageName)
                 .withTag("master")
                 .exec(new PullImageResultCallback())
                 .awaitCompletion(5, TimeUnit.MINUTES);
         }
 
-        return client.createContainerCmd(imageName + ":master")
+        return client.createContainerCmd(baseImageName + ":master")
             .withHostConfig(HostConfig.newHostConfig()
                 .withAutoRemove(true)
                 .withInit(true)

Diff for: JShellAPI/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -0,0 +1,8 @@
+{
+  "properties": [
+    {
+      "name": "jshell-wrapper.image-name",
+      "type": "java.lang.String",
+      "description": "JShellWrapper image name injected from the top-level gradle build file."
+  }
+] }

Diff for: JShellAPI/src/main/resources/application.yaml

@@ -20,6 +20,9 @@ jshellapi:
   dockerResponseTimeout: 60
   dockerConnectionTimeout: 60
 
+jshell-wrapper:
+  image-name: ${jShellWrapperImageName}
+
 server:
   error:
     include-message: always

Diff for: JShellAPI/src/test/java/org/togetherjava/jshellapi/JShellApiTests.java

@@ -1,16 +1,62 @@
 package org.togetherjava.jshellapi;
 
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+import org.togetherjava.jshellapi.dto.JShellResult;
+import org.togetherjava.jshellapi.rest.ApiEndpoints;
+
+import java.time.Duration;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-// TODO - write some integrations
+/**
+ * This class holds integration tests for JShellAPI. It depends on gradle building image task, fore
+ * more information check "test" section in gradle.build file.
+ *
+ * @author Firas Regaieg
+ */
+@ContextConfiguration
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 public class JShellApiTests {
 
+    @Autowired
+    private WebTestClient webTestClient;
+
+    private static final String TEST_EVALUATION_ID = "test";
+    private static final String TEST_CODE_INPUT = "2+2";
+    private static final String TEST_CODE_EXPECTED_OUTPUT = "4";
+
     @Test
-    public void test() {
-        assertThat(true).isTrue();
+    @DisplayName("When posting code snippet, evaluate it then returns successfully result")
+    public void evaluateCodeSnippetTest() {
+
+        JShellResult result = this.webTestClient.mutate()
+            .responseTimeout(Duration.ofSeconds(6))
+            .build()
+            .post()
+            .uri(ApiEndpoints.EVALUATE_CODE_SNIPPET + "/" + TEST_EVALUATION_ID)
+            .bodyValue(TEST_CODE_INPUT)
+            .exchange()
+            .expectStatus()
+            .isOk()
+            .expectBody(JShellResult.class)
+            .value(task -> assertThat(task).isNotNull())
+            .returnResult()
+            .getResponseBody();
+
+        assertThat(result).isNotNull();
+
+        boolean isValidResult = result.snippetsResults()
+            .stream()
+            .filter(res -> res.result() != null)
+            .anyMatch(res -> res.result().equals(TEST_CODE_EXPECTED_OUTPUT));
+
+        assertThat(isValidResult).isTrue();
+
     }
 }

Diff for: JShellWrapper/build.gradle

@@ -24,7 +24,7 @@ test {
 jib {
     from.image = 'eclipse-temurin:22-alpine'
     to {
-        image = 'togetherjava.org:5001/togetherjava/jshellwrapper:master' ?: 'latest'
+        image = rootProject.ext.jShellWrapperImageName
         auth {
             username = System.getenv('ORG_REGISTRY_USER') ?: ''
             password = System.getenv('ORG_REGISTRY_PASSWORD') ?: ''
@@ -41,4 +41,4 @@ shadowJar {
     archiveBaseName.set('JShellWrapper')
     archiveClassifier.set('')
     archiveVersion.set('')
-}
+}

Diff for: JShellWrapper/src/test/java/JShellWrapperTest.java

@@ -49,12 +49,10 @@ void testHelloWorld() {
 
     @Test
     void testExpressionResult() {
-        evalTest(
-                """
-            eval
-            1
-            "Hello world!\"""",
-                """
+        evalTest("""
+                eval
+                1
+                "Hello world!\"""", """
                 OK
                 0
                 OK
@@ -67,12 +65,10 @@ void testExpressionResult() {
 
                 false
                 """);
-        evalTest(
-                """
-            eval
-            1
-            2+2""",
-                """
+        evalTest("""
+                eval
+                1
+                2+2""", """
                 OK
                 0
                 OK

Diff for: build.gradle

@@ -68,3 +68,7 @@ subprojects {
         testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
     }
 }
+
+ext {
+    jShellWrapperImageName = 'togetherjava.org:5001/togetherjava/jshellwrapper:master' ?: 'latest'
+}