PropertyExpansionTest


1   package org.oddjob.arooa;
2   
3   import junit.framework.TestCase;
4   
5   import org.oddjob.arooa.reflect.DefaultRegistryLookup;
6   import org.oddjob.arooa.reflect.RegistryLookup;
7   import org.oddjob.arooa.registry.ComponentRegistry;
8   
9   /**
10   * class to look at how we expand properties
11   */
12  public class PropertyExpansionTest extends TestCase {
13  
14      ComponentRegistry cr = new ComponentRegistry();
15      RegistryLookup props = new DefaultRegistryLookup(cr);
16  
17      /**
18       * run through the test cases of expansion
19       */
20      public void testPropertyExpansion() {
21          assertExpandsTo("","");
22          assertExpandsTo("$","$");
23          assertExpandsTo("$$-","$-");
24          assertExpandsTo("$$","$");
25          cr.register("expanded","EXPANDED");
26          assertExpandsTo("a${expanded}b","aEXPANDEDb");
27          assertExpandsTo("${expanded}${expanded}","EXPANDEDEXPANDED");
28          assertExpandsTo("$$$","$$");
29          assertExpandsTo("$$$$-","$$-");
30          assertExpandsTo("","");
31          assertExpandsTo("Class$$subclass","Class$subclass");    
32      }
33      
34      /**
35       * new things we want
36       */
37      public void testDollarPassthru() {
38          assertExpandsTo("$-","$-");    
39          assertExpandsTo("Class$subclass","Class$subclass");    
40          assertExpandsTo("$$$-","$$-");
41          assertExpandsTo("$$$$$","$$$");
42          assertExpandsTo("a${unassigned-property}","a");
43          assertExpandsTo("a$b","a$b");
44          assertExpandsTo("$}}","$}}");
45      }
46  
47      /**
48       * Object replacement
49       */
50      public void testObjectReplacement() {
51          cr.register("an-int",new Integer  (2));
52          assertExpandsTo("${an-int}", new Integer  (2));
53          assertExpandsTo("${unassigned}", null);
54          assertExpandsTo("${unassigned.property}", null);
55      }
56      
57      public void testProxyExpansion() {
58          cr.register("fruit", new ProxyType());
59          assertExpandsTo("${fruit}s and pairs", "apples and pairs");
60      }
61      
62      /**
63       * old things we dont want; not a test no more
64       */
65      public void oldtestQuirkyLegacyBehavior() {
66          assertExpandsTo("Class$subclass","Classsubclass");    
67          assertExpandsTo("$$$-","$-");
68          assertExpandsTo("a$b","ab");
69          assertExpandsTo("$}}","}}");
70      }
71  
72      /**
73       * Test isConstant method.
74       *
75       */
76      public void testisConstant() {
77          
78          PropertyHelper ph;
79          ph = new PropertyHelper("abc");
80          assertTrue(ph.isConstant());
81          ph = new PropertyHelper("${abc}");
82          assertFalse(ph.isConstant());
83      }
84  
85      /**
86       * Test nested exapansion
87       *
88       */
89      public void testNestedExpansion() {
90          
91          NestedProp foo = new NestedProp();
92          cr.register("foo", foo);
93          assertExpandsTo("${foo.ba}", "Ba");
94          try {
95              assertExpandsTo("${foo.Ba}", null);
96              fail("Ba doesn't exist");
97          } catch (ArooaException expected) { }
98          assertExpandsTo("${foo.ba2.ba}", "Ba");
99      }
100     
101     /**
102      * little helper method to validate stuff
103      */
104     private void assertExpandsTo(String   source, Object   expected) {
105         PropertyHelper ph = new PropertyHelper(source);
106         Object   actual=ph.replaceProperties(props, false);
107         assertEquals(source,expected,actual);
108     }
109 
110     public class NestedProp {
111 
112         public String   getBa() {
113             return "Ba";
114         }
115         public NestedProp getBa2() {
116             return new NestedProp();
117         }
118     }
119     
120     public static class ProxyType {
121         public Object   valueFor(Class   requested) {
122             return "apple";
123         }
124     }
125     
126 //end class
127 }
128
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