[#1309] add test

Author: remkop

src/test/java/picocli/Issue1309.java

@@ -0,0 +1,59 @@
+package picocli;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.contrib.java.lang.system.ProvideSystemProperty;
+import org.junit.contrib.java.lang.system.RestoreSystemProperties;
+import org.junit.rules.TestRule;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Model.CommandSpec;
+import picocli.CommandLine.ParameterException;
+import picocli.CommandLine.Parameters;
+import picocli.CommandLine.Spec;
+import picocli.CommandLine;
+
+import java.util.concurrent.Callable;
+
+import static org.junit.Assert.*;
+
+public class Issue1309 {
+
+    // allows tests to set any kind of properties they like, without having to individually roll them back
+    @Rule
+    public final TestRule restoreSystemProperties = new RestoreSystemProperties();
+
+    @Rule
+    public final ProvideSystemProperty ansiOFF = new ProvideSystemProperty("picocli.ansi", "false");
+
+    @Command(name = "test", mixinStandardHelpOptions = true)
+    static class TestCommand implements Callable<Integer> {
+
+        @Spec
+        CommandSpec spec;
+
+        public Integer call() throws Exception {
+            throw new ParameterException(spec.commandLine(), "Missing required subcommand");
+        }
+
+        @Command(name = "start", description = "start", mixinStandardHelpOptions = true)
+        public int start(
+                @Parameters(index = "0", paramLabel = "id") String id) {
+            System.out.printf("start was called with %s%n", id);
+            return 111;
+        }
+
+        @Command(name = "restart", description = "restart", mixinStandardHelpOptions = true)
+        public int restart(
+                @Parameters(index = "0", paramLabel = "id") String id) {
+            System.out.printf("restart was called with %s%n", id);
+            return 222;
+        }
+
+    }
+
+    @Test
+    public void testIssue1309() {
+        assertEquals(222, new CommandLine(new TestCommand()).execute("restart", "rest"));
+        assertEquals(111, new CommandLine(new TestCommand()).execute("start", "sta"));
+    }
+}