#369 Add integration test for Docker

Author: ascheman

integration-test/build.gradle

@@ -179,18 +179,66 @@ tasks.register("integrationTestMavenPlugin") {
     }
 }
 
+final String INTEGRATION_TEST_DIRECTORY_DOCKER = "docker"
+final String INTEGRATION_TEST_DIRECTORY_DOCKER_BUILD = "${INTEGRATION_TEST_DIRECTORY_DOCKER}/${BUILD_DIRECTORY}"
+
+tasks.register("cleanIntegrationTestDocker", Delete) {
+    group("Build")
+    description("Deletes the result directory from Docker integration tests")
+
+    def filesToDelete = files(INTEGRATION_TEST_DIRECTORY_DOCKER_BUILD)
+    delete(filesToDelete)
+    outputs.upToDateWhen { !filesToDelete.files.any { it.exists() } }
+}
+
+tasks.register("integrationTestDocker") {
+    group("Verification")
+    description("Run Docker integration tests (only)")
+
+    final File buildReportsDirectory = file("${INTEGRATION_TEST_DIRECTORY_DOCKER_BUILD}/reports")
+    final File testIndex = new File(buildReportsDirectory, "index.html")
+    outputs.file testIndex
+
+    dependsOn(integrationTestPrepare)
+    mustRunAfter(cleanIntegrationTestDocker)
+
+    doLast {
+        buildReportsDirectory.mkdirs()
+        // Compute the image tag exactly as in the CLI module: use branch name tag
+        String currentBranch = "${'git branch --show-current'.execute().text.trim()}"
+        String branchTag = currentBranch.replaceAll('/', '-')
+        String image = "ghcr.io/aim42/hsc:${branchTag}"
+
+        // Prepare absolute paths for volume mounts
+        String docsDir = file("${INTEGRATION_TEST_DIRECTORY_COMMON_BUILD}/docs").absolutePath
+        String reportsDir = buildReportsDirectory.absolutePath
+
+        String params = "--rm -v \"${docsDir}:${docsDir}\" -v \"${reportsDir}\":/reports -w \"${docsDir}\" ${image} -r /reports --exclude https://www.baeldung.com/.*"
+        def result = exec {
+            if (System.getProperty("os.name") ==~ /Windows.*/) {
+                // Use cmd to run docker on Windows
+                commandLine 'cmd', '/c', "docker run ${params}"
+            } else {
+                commandLine 'sh', '-c', "docker run ${params}"
+            }
+        }
+        logger.debug "Script output: ${result}"
+        assert testIndex.exists()
+    }
+}
+
 tasks.register("integrationTest") {
     group("Verification")
     description("Run all integration tests (without any installations etc.)")
 
-    dependsOn(integrationTestGradlePlugin, integrationTestCli, integrationTestMavenPlugin)
+    dependsOn(integrationTestGradlePlugin, integrationTestCli, integrationTestMavenPlugin, integrationTestDocker)
 }
 
 tasks.register("cleanIntegrationTest", Delete) {
     group("Build")
     description("Deletes all integration test builds")
 
     dependsOn(cleanIntegrationTestCommon, cleanIntegrationTestGradlePlugin,
-            cleanIntegrationTestCli, cleanIntegrationTestMavenPlugin)
+            cleanIntegrationTestCli, cleanIntegrationTestMavenPlugin, cleanIntegrationTestDocker)
 }
 clean.dependsOn(cleanIntegrationTest)