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1
8
9 package org.picocontainer.gems.constraints;
10
11 import org.jmock.Mock;
12 import org.jmock.MockObjectTestCase;
13 import org.picocontainer.ComponentAdapter;
14 import org.picocontainer.PicoVisitor;
15 import org.picocontainer.gems.constraints.And;
16 import org.picocontainer.gems.constraints.Constraint;
17 import org.picocontainer.gems.constraints.Not;
18 import org.picocontainer.gems.constraints.Or;
19
20
27 public class AndOrNotTestCase extends MockObjectTestCase {
28
29 Mock mockAdapter = mock(ComponentAdapter.class);
30 ComponentAdapter adapter = (ComponentAdapter) mockAdapter.proxy();
31 Mock mockVisior = mock(PicoVisitor.class);
32 PicoVisitor visitor = (PicoVisitor) mockVisior.proxy();
33
34 Mock mockC1 = mock(Constraint.class, "constraint 1");
35 Mock mockC2 = mock(Constraint.class, "constraint 2");
36 Mock mockC3 = mock(Constraint.class, "constraint 3");
37 Constraint c1 = (Constraint) mockC1.proxy();
38 Constraint c2 = (Constraint) mockC2.proxy();
39 Constraint c3 = (Constraint) mockC3.proxy();
40
41 public void testAndAllChildrenConstraintsTrueGivesTrue() {
42 Constraint c = new And(c1, c2, c3);
43
44 mockC1.expects(once()).method("evaluate")
45 .with(same(adapter))
46 .will(returnValue(Boolean.TRUE)).id("c1");
47 mockC2.expects(once()).method("evaluate")
48 .with(same(adapter)).after(mockC1, "c1")
49 .will(returnValue(Boolean.TRUE)).id("c2");
50 mockC3.expects(once()).method("evaluate")
51 .with(same(adapter)).after(mockC2, "c2")
52 .will(returnValue(Boolean.TRUE));
53
54 assertTrue(c.evaluate(adapter));
55 }
56
57 public void testAndAllChildrenAreVisitedBreadthFirst() {
58 Constraint c = new And(c1, c2, c3);
59
60 mockVisior.expects(once()).method("visitParameter")
61 .with(same(c)).id("v");
62 mockC1.expects(once()).method("accept")
63 .with(same(visitor)).after(mockVisior, "v");
64 mockC2.expects(once()).method("accept")
65 .with(same(visitor)).after(mockVisior, "v");
66 mockC3.expects(once()).method("accept")
67 .with(same(visitor)).after(mockVisior, "v");
68
69 c.accept(visitor);
70 }
71
72 public void testAndAllChildrenConstraintsTrueGivesTrueUsingAlternateConstructor() {
73 Constraint c = new And(new Constraint[] {c1, c2, c3});
74
75 mockC1.expects(once()).method("evaluate")
76 .with(same(adapter))
77 .will(returnValue(Boolean.TRUE)).id("c1");
78 mockC2.expects(once()).method("evaluate")
79 .with(same(adapter)).after(mockC1, "c1")
80 .will(returnValue(Boolean.TRUE)).id("c2");
81 mockC3.expects(once()).method("evaluate")
82 .with(same(adapter)).after(mockC2, "c2")
83 .will(returnValue(Boolean.TRUE));
84
85 assertTrue(c.evaluate(adapter));
86 }
87
88 public void testAndShortCircuitGivesFalse() {
89 Constraint c = new And(c1, c2, c3);
90
91 mockC1.expects(once()).method("evaluate")
92 .with(same(adapter))
93 .will(returnValue(Boolean.TRUE)).id("c1");
94 mockC2.expects(once()).method("evaluate")
95 .with(same(adapter)).after(mockC1, "c1")
96 .will(returnValue(Boolean.FALSE));
97 mockC3.expects(never()).method("evaluate");
98
99 assertFalse(c.evaluate(adapter));
100 }
101
102 public void testOrAllChildrenConstraintsFalseGivesFalse() {
103 Constraint c = new Or(c1, c2, c3);
104
105 mockC1.expects(once()).method("evaluate")
106 .with(same(adapter))
107 .will(returnValue(Boolean.FALSE)).id("c1");
108 mockC2.expects(once()).method("evaluate")
109 .with(same(adapter)).after(mockC1, "c1")
110 .will(returnValue(Boolean.FALSE)).id("c2");
111 mockC3.expects(once()).method("evaluate")
112 .with(same(adapter)).after(mockC2, "c2")
113 .will(returnValue(Boolean.FALSE));
114
115 assertFalse(c.evaluate(adapter));
116 }
117
118 public void testOrAllChildrenAreVisitedBreadthFirst() {
119 Constraint c = new Or(c1, c2, c3);
120
121 mockVisior.expects(once()).method("visitParameter")
122 .with(same(c)).id("v");
123 mockC1.expects(once()).method("accept")
124 .with(same(visitor)).after(mockVisior, "v");
125 mockC2.expects(once()).method("accept")
126 .with(same(visitor)).after(mockVisior, "v");
127 mockC3.expects(once()).method("accept")
128 .with(same(visitor)).after(mockVisior, "v");
129
130 c.accept(visitor);
131 }
132
133 public void testMixingOrAndNot() {
134 Constraint c = new Or(c1, new Not(c2), c3);
135
136 mockC1.expects(once()).method("evaluate")
137 .with(same(adapter))
138 .will(returnValue(Boolean.FALSE)).id("c1");
139 mockC2.expects(once()).method("evaluate")
140 .with(same(adapter)).after(mockC1, "c1")
141 .will(returnValue(Boolean.FALSE));
142 mockC3.expects(never()).method("evaluate");
143
144 assertTrue(c.evaluate(adapter));
145 }
146
147 public void testNotChildIdVisitedBreadthFirst() {
148 Constraint c = new Not(c1);
149
150 mockVisior.expects(once()).method("visitParameter")
151 .with(same(c)).id("v");
152 mockC1.expects(once()).method("accept")
153 .with(same(visitor)).after(mockVisior, "v");
154
155 c.accept(visitor);
156 }
157 }
158
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