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1 package org.picocontainer.defaults;
2
3 import org.jmock.Mock;
4 import org.jmock.MockObjectTestCase;
5 import org.jmock.core.Constraint;
6 import org.picocontainer.ComponentMonitor;
7 import org.picocontainer.monitors.ConsoleComponentMonitor;
8
9 import java.lang.reflect.Constructor  ;
10 import java.util.*;
11
12
16 public class DelegatingComponentMonitorTestCase extends MockObjectTestCase {
17
18 public void testDelegatingMonitorThrowsExpectionWhenConstructionWithNullDelegate(){
19 try {
20 new DelegatingComponentMonitor(null);
21 fail("NPE expected");
22 } catch (NullPointerException e) {
23 assertEquals("NPE", "monitor", e.getMessage());
24 }
25 }
26
27 public void testDelegatingMonitorThrowsExpectionWhenChangingToNullMonitor(){
28 DelegatingComponentMonitor dcm = new DelegatingComponentMonitor();
29 try {
30 dcm.changeMonitor(null);
31 fail("NPE expected");
32 } catch (NullPointerException e) {
33 assertEquals("NPE", "monitor", e.getMessage());
34 }
35 }
36
37 public void testDelegatingMonitorCanChangeMonitorInDelegateThatDoesSupportMonitorStrategy() {
38 ComponentMonitor monitor = mockMonitorWithNoExpectedMethods();
39 DelegatingComponentMonitor dcm = new DelegatingComponentMonitor(mockMonitorThatSupportsStrategy(monitor));
40 dcm.changeMonitor(monitor);
41 assertEquals(monitor, dcm.currentMonitor());
42 dcm.instantiating(null);
43 }
44
45 public void testDelegatingMonitorChangesDelegateThatDoesNotSupportMonitorStrategy() {
46 ComponentMonitor delegate = mockMonitorWithNoExpectedMethods();
47 DelegatingComponentMonitor dcm = new DelegatingComponentMonitor(delegate);
48 ComponentMonitor monitor = mockMonitorWithNoExpectedMethods();
49 assertEquals(delegate, dcm.currentMonitor());
50 dcm.changeMonitor(monitor);
51 assertEquals(monitor, dcm.currentMonitor());
52 }
53
54 public void testDelegatingMonitorReturnsDelegateThatDoesNotSupportMonitorStrategy() {
55 ComponentMonitor delegate = mockMonitorWithNoExpectedMethods();
56 DelegatingComponentMonitor dcm = new DelegatingComponentMonitor(delegate);
57 assertEquals(delegate, dcm.currentMonitor());
58 }
59
60 private ComponentMonitor mockMonitorWithNoExpectedMethods() {
61 Mock mock = mock(ComponentMonitor.class);
62 return (ComponentMonitor)mock.proxy();
63 }
64
65 private ComponentMonitor mockMonitorThatSupportsStrategy(ComponentMonitor currentMonitor) {
66 Mock mock = mock(MonitorThatSupportsStrategy.class);
67 mock.expects(once()).method("changeMonitor").with(eq(currentMonitor));
68 mock.expects(once()).method("currentMonitor").withAnyArguments().will(returnValue(currentMonitor));
69 mock.expects(once()).method("instantiating").withAnyArguments();
70 return (ComponentMonitor)mock.proxy();
71 }
72
73 public void testMonitoringHappensBeforeAndAfterInstantiation() throws NoSuchMethodException {
74 final Vector ourIntendedInjectee0 = new Vector();
75 final String ourIntendedInjectee1 = "hullo";
76 Mock monitor = mock(ComponentMonitor.class);
77 Constructor nacotCtor = NeedsACoupleOfThings.class.getConstructors()[0];
78 monitor.expects(once()).method("instantiating").with(eq(nacotCtor));
79 Constraint durationIsGreaterThanOrEqualToZero = new Constraint() {
80 public boolean eval(Object o) {
81 Long duration = (Long )o;
82 return 0 <= duration.longValue();
83 }
84
85 public StringBuffer describeTo(StringBuffer stringBuffer) {
86 return stringBuffer.append("The endTime wasn't after the startTime");
87 }
88 };
89 Constraint isANACOTThatWozCreated = new Constraint() {
90 public boolean eval(Object o) {
91 return o instanceof NeedsACoupleOfThings;
92 }
93
94 public StringBuffer describeTo(StringBuffer stringBuffer) {
95 return stringBuffer.append("Should have been a hashmap");
96 }
97 };
98 Constraint collectionAndStringWereInjected = new Constraint() {
99 public boolean eval(Object o) {
100 Object [] ctorArgs = (Object []) o;
101 return ctorArgs.length == 2 && ctorArgs[0] == ourIntendedInjectee0 && ctorArgs[1] == ourIntendedInjectee1;
102 }
103 public StringBuffer describeTo(StringBuffer stringBuffer) {
104 return stringBuffer.append("Should have injected our intended vector and string");
105 }
106 };
107 monitor.expects(once()).method("instantiated").with(eq(nacotCtor), isANACOTThatWozCreated, collectionAndStringWereInjected, durationIsGreaterThanOrEqualToZero);
108 DefaultPicoContainer parent = new DefaultPicoContainer();
109 parent.registerComponentInstance(ourIntendedInjectee0);
110 parent.registerComponentInstance(ourIntendedInjectee1);
111 DefaultPicoContainer child = new DefaultPicoContainer(new DelegatingComponentMonitor((ComponentMonitor) monitor.proxy()), parent);
112 child.registerComponentImplementation(NeedsACoupleOfThings.class);
113 child.getComponentInstance(NeedsACoupleOfThings.class);
114 }
115
116 static class NeedsACoupleOfThings {
117 public NeedsACoupleOfThings(Collection collection, String string) {
118 }
119 }
120
121 static interface MonitorThatSupportsStrategy extends ComponentMonitor, ComponentMonitorStrategy {
122 }
123 }
124 |
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