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1
10 package org.picocontainer.defaults;
11
12 import java.io.ByteArrayOutputStream  ;
13 import java.io.IOException ;
14 import java.io.PrintStream ;
15 import java.io.PrintWriter ;
16 import java.util.HashSet ;
17 import java.util.Iterator ;
18 import java.util.List ;
19 import java.util.Set ;
20
21 import junit.framework.TestCase;
22
23 import org.picocontainer.ComponentAdapter;
24 import org.picocontainer.PicoException;
25 import org.picocontainer.PicoInitializationException;
26 import org.picocontainer.PicoInstantiationException;
27 import org.picocontainer.PicoIntrospectionException;
28 import org.picocontainer.PicoRegistrationException;
29
30
33 public class PicoExceptionsTestCase
34 extends TestCase {
35
36 final static public String MESSAGE = "Message of the exception";
37 final static public Throwable THROWABLE = new Throwable ();
38
39 final void executeTestOfStandardException(final Class clazz) {
40 final ComponentAdapter componentAdapter = new ConstructorInjectionComponentAdapter(clazz, clazz, null, true, new DelegatingComponentMonitor());
41 DefaultPicoContainer pico = new DefaultPicoContainer();
42 pico.registerComponentInstance(MESSAGE);
43 try {
44 final Exception exception = (Exception ) componentAdapter.getComponentInstance(pico);
45 assertEquals(MESSAGE, exception.getMessage());
46 } catch (final UnsatisfiableDependenciesException ex) {
47 final Set set = new HashSet ();
48 for (final Iterator iter = ex.getUnsatisfiableDependencies().iterator(); iter.hasNext();) {
49 final List list = (List ) iter.next();
50 set.addAll(list);
51 }
52 assertTrue(set.contains(Throwable .class));
53 }
54 pico = new DefaultPicoContainer();
55 pico.registerComponentInstance(THROWABLE);
56 try {
57 final PicoException exception = (PicoException) componentAdapter.getComponentInstance(pico);
58 assertSame(THROWABLE, exception.getCause());
59 } catch (final UnsatisfiableDependenciesException ex) {
60 final Set set = new HashSet ();
61 for (final Iterator iter = ex.getUnsatisfiableDependencies().iterator(); iter.hasNext();) {
62 final List list = (List ) iter.next();
63 set.addAll(list);
64 }
65 assertTrue(set.contains(String .class));
66 }
67 pico.registerComponentInstance(MESSAGE);
68 final PicoException exception = (PicoException) componentAdapter.getComponentInstance(pico);
69 assertEquals(MESSAGE, exception.getMessage());
70 assertSame(THROWABLE, exception.getCause());
71 }
72
73 public void testPicoInitializationException() {
74 executeTestOfStandardException(PicoInitializationException.class);
75 }
76
77 public void testPicoInitializationExceptionWithDefaultConstructor() {
78 TestException e = new TestException();
79 assertNull(e.getMessage());
80 assertNull(e.getCause());
81 }
82
83 private static class TestException extends PicoInitializationException {
84
85 }
86
87 public void testPicoInstantiationException() {
88 executeTestOfStandardException(PicoInstantiationException.class);
89 }
90
91 public void testPicoIntrospectionException() {
92 executeTestOfStandardException(PicoIntrospectionException.class);
93 }
94
95 public void testPicoRegistrationException() {
96 executeTestOfStandardException(PicoRegistrationException.class);
97 }
98
99 public void testCyclicDependencyException() {
100 final CyclicDependencyException cdEx = new CyclicDependencyException(getClass());
101 cdEx.push(String .class);
102 final Class [] classes = cdEx.getDependencies();
103 assertEquals(2, classes.length);
104 assertSame(getClass(), classes[0]);
105 assertSame(String .class, classes[1]);
106 assertTrue(cdEx.getMessage().indexOf(getClass().getName()) >= 0);
107 }
108
109 public void testPrintStackTrace() throws IOException {
110 PicoException nestedException = new PicoException("Outer", new Exception ("Inner")) {
111 };
112 PicoException simpleException = new PicoException("Outer") {
113 };
114 ByteArrayOutputStream out = new ByteArrayOutputStream ();
115 PrintStream printStream = new PrintStream (out);
116 nestedException.printStackTrace(printStream);
117 simpleException.printStackTrace(printStream);
118 out.close();
119 assertTrue(out.toString().indexOf("Caused by:") > 0);
120 out = new ByteArrayOutputStream ();
121 PrintWriter writer = new PrintWriter (out);
122 nestedException.printStackTrace(writer);
123 simpleException.printStackTrace(writer);
124 writer.flush();
125 out.close();
126 assertTrue(out.toString().indexOf("Caused by:") > 0);
127 }
129 }
130 |
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