1 files changed, 111 insertions, 0 deletions
diff --git a/src/test/java/com/beust/jcommander/TypeHierarchyTest.java b/src/test/java/com/beust/jcommander/TypeHierarchyTest.java
new file mode 100644
index 0000000..1ae3771
--- /dev/null
+++ b/src/test/java/com/beust/jcommander/TypeHierarchyTest.java
@@ -0,0 +1,111 @@
+package com.beust.jcommander;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+/**
+ * <p>Test that parent classes and interfaces are used correctly</p>
+ */
+public class TypeHierarchyTest {
+
+    public interface Marker {
+        @Parameter(names = {"--available"})
+        void setAvailable(boolean available);
+    }
+
+    public class Base implements Marker {
+        boolean available = false;
+
+        public boolean isAvailable() {
+            return available;
+        }
+
+        @Override
+        public void setAvailable(boolean available) {
+            this.available = true;
+        }
+    }
+
+    public interface IMiddle {
+        @Parameter(names = {"--count"})
+        void setCount(int count);
+    }
+
+    public interface IMiddleMiddle extends IMiddle {
+        @Parameter(names = {"--again"})
+        void setCountAgain(int count);
+    }
+
+    public class Middle extends Base implements IMiddleMiddle {
+
+        private int count;
+        private int again;
+
+        public int getCount() {
+            return count;
+        }
+
+        @Override
+        public void setCount(int count) {
+            this.count = count;
+        }
+
+        public int getCountAgain() {
+            return again;
+        }
+
+        @Override
+        public void setCountAgain(int again) {
+            this.again = again;
+        }
+    }
+
+    // trying to trip it up and get it to go from Child -> Composite -> Visitor
+    public interface Composite extends Visitor {
+        @Parameter(names = {"-n", "--name"})
+        void setName(String validate);
+    }
+
+    public interface Visitor {
+        @Parameter(names = {"--validate"})
+        void setValidate(boolean validate);
+    }
+
+    public class Child extends Middle implements Composite, Visitor{
+
+        private String name;
+        private boolean validate = false;
+
+        public String getName() {
+            return name;
+        }
+
+        @Override
+        public void setName(String name) {
+            this.name = name;
+        }
+
+        public boolean isValidate() {
+            return validate;
+        }
+
+        @Override
+        public void setValidate(boolean validate) {
+            this.validate = validate;
+        }
+    }
+
+    @Test
+    public void testTypeHierarchy() {
+        final Child child = new Child();
+        JCommander commander = new JCommander(child);
+        commander.parse("--validate","-n","child-one","--count","14","--again","22","--available");
+
+        // test values through entire hierarchy
+        Assert.assertTrue(child.isValidate());
+        Assert.assertTrue(child.isAvailable());
+        Assert.assertEquals(14, child.getCount());
+        Assert.assertEquals(22, child.getCountAgain());
+        Assert.assertEquals("child-one", child.getName());
+    }
+}