#1760: accept empty input for one option

CHANGELOG.adoc

@@ -7,6 +7,7 @@ This file documents all notable changes to https://github.com/devonfw/IDEasy[IDE
 Release with new features and bugfixes:
 
 * https://github.com/devonfw/IDEasy/issues/1552[#1552]: Add Commandlet to fix TLS issue
+* https://github.com/devonfw/IDEasy/issues/1760[#1760]: Accept empty input for single option
 
 The full list of changes for this release can be found in https://github.com/devonfw/IDEasy/milestone/43?closed=1[milestone 2026.04.002].
 

cli/src/main/java/com/devonfw/tools/ide/context/AbstractIdeContext.java

@@ -1033,6 +1033,9 @@ private <O> O displayOptionsAndGetAnswer(O[] options) {
       }
       IdeLogLevel.INTERACTION.log(LOG, "Option {}: {}", numericKey, title);
     }
+    if (options.length == 1) {
+      mapping.put("", options[0]);
+    }
     O option = null;
     if (isBatchMode()) {
       if (isForceMode()) {

cli/src/test/java/com/devonfw/tools/ide/context/IdeContextTest.java

@@ -1,9 +1,17 @@
 package com.devonfw.tools.ide.context;
 
 import java.nio.file.Path;
+import java.util.List;
 import java.util.Properties;
 
 import org.junit.jupiter.api.Test;
+import com.devonfw.tools.ide.security.ToolVersionChoice;
+import com.devonfw.tools.ide.tool.ToolEditionAndVersion;
+import com.devonfw.tools.ide.security.ToolVulnerabilities;
+import com.devonfw.tools.ide.version.VersionIdentifier;
+import com.devonfw.tools.ide.version.VersionRange;
+import com.devonfw.tools.ide.url.model.file.json.Cve;
+import com.devonfw.tools.ide.tool.ToolEdition;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -273,4 +281,36 @@ void testFindBashOnSystemPathOnWindowsWithInvalidBashPathSet() {
     assertThat(bash).isEqualTo(bashExePath);
   }
 
+  @Test
+  void testQuestionWithMultipleOptions() {
+    IdeTestContext context = newContext(PROJECT_BASIC, null, false);
+    String[] options = {"option1", "option2"};
+    context.setAnswers("option1");
+    String result = context.question(options, "Which option?");
+    assertThat(result).isEqualTo("option1");
+  }
+
+  @Test
+  void testQuestionWithSingleOptionAndEmptyAnswer() {
+    IdeTestContext context = newContext(PROJECT_BASIC, null, false);
+    String[] options = {"onlyOption"};
+    context.setAnswers(""); // Empty answer (Enter)
+    String result = context.question(options, "Which option?");
+    assertThat(result).isEqualTo("onlyOption");
+  }
+
+  @Test
+  void testQuestionWithSingleToolVersionChoiceAndEmptyAnswer() {
+    IdeTestContext context = newContext(PROJECT_BASIC, null, false);
+    ToolEdition edition = new ToolEdition("java", "oracle");
+    VersionIdentifier version = VersionIdentifier.of("17");
+    Cve cve = new Cve("CVE-2023-XXXX", 9.8, List.of(VersionRange.of("[17,18)")));
+    ToolVersionChoice choice = new ToolVersionChoice(new ToolEditionAndVersion(edition, version), "current", ToolVulnerabilities.of(List.of(cve)));
+    ToolVersionChoice[] options = {choice};
+
+    context.setAnswers(""); // Empty answer (Enter)
+    ToolVersionChoice result = context.question(options, "Which version?");
+    assertThat(result).isSameAs(choice);
+  }
+
 }