Make some IT soft-fail

acme4j-it/src/test/java/org/shredzone/acme4j/it/ProviderIT.java

@@ -20,7 +20,6 @@ import java.net.MalformedURLException;
 import java.net.URI;
 import java.time.Duration;
 
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.shredzone.acme4j.Session;
 import org.shredzone.acme4j.connector.Resource;
@@ -140,7 +139,7 @@ public class ProviderIT {
      * Test ssl.com, staging server
      */
     @Test
-    @Disabled("Instable due to frequent certificate expiration of acme-try.ssl.com")
+    @SoftFail("Frequent certificate expiration of acme-try.ssl.com")
     public void testSslComStaging() throws AcmeException, MalformedURLException {
         var sessionEccStage = new Session("acme://ssl.com/staging/ecc");
         assertThat(sessionEccStage.getMetadata().getWebsite()).hasValue(URI.create("https://www.ssl.com").toURL());
@@ -166,6 +165,7 @@ public class ProviderIT {
      * Test ZeroSSL
      */
     @Test
+    @SoftFail("Frequent network timeouts or HTTP errors")
     public void testZeroSsl() throws AcmeException, MalformedURLException {
         var session = new Session("acme://zerossl.com");
         session.networkSettings().setTimeout(Duration.ofSeconds(120L));

acme4j-it/src/test/java/org/shredzone/acme4j/it/SoftFail.java

@@ -0,0 +1,38 @@
+/*
+ * acme4j - Java ACME client
+ *
+ * Copyright (C) 2025 Richard "Shred" Körber
+ *   http://acme4j.shredzone.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+package org.shredzone.acme4j.it;
+
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.shredzone.acme4j.exception.AcmeException;
+
+/**
+ * Marks a test to fail softly if an {@link AcmeException} is thrown. These are usually
+ * integration tests that fail frequently because the external server has stability
+ * issues.
+ */
+@Retention(RUNTIME)
+@Target(METHOD)
+@ExtendWith(SoftFailExtension.class)
+public @interface SoftFail {
+    /**
+     * A human-readable reason why this test is marked as soft fail.
+     */
+    String value();
+}

acme4j-it/src/test/java/org/shredzone/acme4j/it/SoftFailExtension.java

@@ -0,0 +1,34 @@
+/*
+ * acme4j - Java ACME client
+ *
+ * Copyright (C) 2025 Richard "Shred" Körber
+ *   http://acme4j.shredzone.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+package org.shredzone.acme4j.it;
+
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.junit.jupiter.api.extension.TestExecutionExceptionHandler;
+import org.opentest4j.TestAbortedException;
+import org.shredzone.acme4j.exception.AcmeException;
+
+/**
+ * Aborts a @{@link SoftFail} annotated test when an {@link AcmeException} is thrown.
+ */
+public class SoftFailExtension implements TestExecutionExceptionHandler {
+    @Override
+    public void handleTestExecutionException(ExtensionContext ctx, Throwable ex)
+            throws Throwable {
+        if (ex instanceof AcmeException) {
+            throw new TestAbortedException("SOFT FAIL: " + ctx.getDisplayName()
+                    + " - " + ex.getMessage(), ex);
+        }
+        throw ex;
+    }
+}