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   ****************************************************************/
  
  
  package org.apache.cayenne.util;
  
  import org.junit.Test;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  public class InvocationTest {
  	
      private String _methodName = "myListenerMethod";
  
      @Test
  	public void testEqualsReflexive() throws NoSuchMethodException {
  		Invocation inv0 = new Invocation(this, _methodName);		
  
  		assertEquals(inv0, inv0);
  	}
  
      @Test
  	public void testEqualsSymmetric() throws NoSuchMethodException {
  		Invocation inv01 = new Invocation(this, _methodName);
  		Invocation inv02 = new Invocation(this, _methodName);
  		
  		assertEquals(inv01, inv02);
  		assertEquals(inv02, inv01);
  	}
  
      @Test
  	public void testEqualsTransitive() throws NoSuchMethodException {
  		Invocation inv01 = new Invocation(this, _methodName);
  		Invocation inv02 = new Invocation(this, _methodName);
  		Invocation inv03 = new Invocation(this, _methodName);
  		
  		assertEquals(inv01, inv02);
  		assertEquals(inv02, inv03);
  		assertEquals(inv01, inv03);
  	}
  
      @Test
  	public void testEqualsNull() throws NoSuchMethodException {
  		Invocation inv0 = new Invocation(this, _methodName);
  
  		assertTrue(inv0.equals(null) == false);
  	}
  
      @Test
  	public void testEqualsDifferentMethods() throws NoSuchMethodException  {
  		Invocation inv0 = new Invocation(this, _methodName);
  		Invocation inv1 = new Invocation(this, _methodName, new Class[]{Object.class});
  
  		assertTrue(inv0.equals(inv1) == false);
  	}
  
      @Test
  	public void testEqualsNoVsOneArg() throws NoSuchMethodException {
  		Invocation inv0 = new Invocation(this, _methodName);
  		Invocation inv1 = new Invocation(this, _methodName, new Class[]{Object.class});
  
  		assertTrue(inv0.equals(inv1) == false);
  	}
  
      @Test
  	public void testAddToSet() throws NoSuchMethodException {
  		HashSet set = new HashSet();
  		
  		Invocation inv0 = new Invocation(this, _methodName);
  
  		set.add(inv0);
  		set.add(inv0);
  
  		assertEquals(1, set.size());
  	}
  
      @Test
  	public void testAddTwo() throws NoSuchMethodException {
  		Set set = new HashSet();
  		
  		Invocation inv01 = new Invocation(this, _methodName);
  		Invocation inv02 = new Invocation(this, _methodName);
  		
  		set.add(inv01);
  		set.add(inv02);
  
  		assertEquals(1, set.size());
  	}
  
      @Test
  	public void testEmptyParamTypes() throws NoSuchMethodException {
  		try {
  			new Invocation(this, _methodName, new Class[]{});
  			fail();
  		}
  		catch (IllegalArgumentException ex) {
  			// expected
  		}
  	}
  
      @Test
  	public void testNullParamTypes0() throws NoSuchMethodException {
  		try {
  			new Invocation(this, _methodName, new Class[]{null});
  			fail();
  		}
  		catch (IllegalArgumentException ex) {
  			// expected
  		}
  	}
  
      @Test
  	public void testNullParamTypes1() throws NoSuchMethodException {
  		try {
  			new Invocation(this, _methodName, new Class[]{String.class, null});
  			fail();
  		}
  		catch (IllegalArgumentException ex) {
  			// expected
  		}
  	}
  
      @Test
  	public void testFireNoArgument() throws NoSuchMethodException {
  		Invocation inv0 = new Invocation(this, _methodName);
  
  		assertTrue(inv0.fire());
  	}
  
      @Test
  	public void testFireOneArgument() throws NoSuchMethodException {
  		Invocation inv1 = new Invocation(this, _methodName, new Class[]{Object.class});
  
  		assertTrue(inv1.fire("foo"));
  	}
  
      @Test
  	public void testFireWrongArgumentCount0() throws Exception {
  		Invocation inv0 = new Invocation(this, _methodName);
  
  		try {
  			inv0.fire("foo");
  			fail();
  		}
  
  		catch (IllegalArgumentException ex) {
  			// expected
  		}
  	}
  
      @Test
  	public void testFireWrongArgumentCount1() throws Exception {
  		Invocation inv1 = new Invocation(this, _methodName, new Class[]{Object.class});
  
  		try {
  			inv1.fire();
  			fail();
  		}
  
  		catch (IllegalArgumentException ex) {
  			// expected
  		}
  	}
  
      @Test
  	public void testFireWrongArgumentCount2() throws Exception {
  		Invocation inv1 = new Invocation(this, _methodName, new Class[]{Object.class});
  
  		try {
  			inv1.fire(new Object[]{"foo", "bar"});
  			fail();
  		}
  
  		catch (IllegalArgumentException ex) {
  			// expected
  		}
  	}
  
      @Test
  	public void testFireNullArgArray() throws Exception {
  		Invocation inv1 = new Invocation(this, _methodName, new Class[]{Object.class});
  
  		try {
  			inv1.fire(null);
  			fail();
  		}
  
  		catch (IllegalArgumentException ex) {
  			// expected
  		}
  	}
  
      @Test
  	public void testGarbageCollection() throws NoSuchMethodException {
  		// create an invocation with an listener that will be garbage collected
  		Invocation inv0 = new Invocation(new String(), "toString");
  
  		// (hopefully) make the listener go away
  		System.gc();
  		System.gc();
  
  		assertFalse(inv0.fire());
  	}
  
  	
  	// these methods exist for the test of Invocation equality
  	public void myListenerMethod() {
  	}
  
  	public void myListenerMethod(Object o) {
  	}
  
  }
  