TestRubyArray


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28  package org.jruby.test;
29  
30  import org.jruby.Ruby;
31  import org.jruby.RubyArray;
32  
33  /**
34   * Test case for functionality in RubyArray
35   */
36  public class TestRubyArray extends TestRubyBase {
37      private String   result;
38  
39      public TestRubyArray(final String   name) {
40          super(name);
41      }
42  
43      public void setUp() throws Exception   {
44          if (runtime == null) {
45              runtime = Ruby.getDefaultInstance();
46          }
47          eval("$h = ['foo','bar']");
48      }
49  
50      public void tearDown() {
51          super.tearDown();
52      }
53  
54      /**
55       * Test literal constructor [], Array[], Array::[], and Array::new with all forms of parameters.
56       */
57      public void testConstructors() throws Exception   {
58          result = eval("arr = ['a', 100]; p arr");
59          assertEquals("[\"a\", 100]", result);
60          result = eval("arr = Array['b', 200]; p arr");
61          assertEquals("[\"b\", 200]", result);
62          /*
63          result = eval("arr = Array::['c', 200]; p arr");
64          assertEquals("[\"c\", 200]", result);
65          result = eval("arr = Array.['d', 200]; p arr");
66          assertEquals("[\"d\", 200]", result);
67          */
68          result = eval("arr = Array.new(); p arr");
69          assertEquals("[]", result);
70          result = eval("arr = Array.new(2); p arr");
71          assertEquals("[nil, nil]", result);
72          result = eval("arr = Array.new(3, 'a'); p arr"); // Init
73          assertEquals("[\"a\", \"a\", \"a\"]", result);
74          result = eval("arr = Array.new(5) {|i| i*i}; p arr"); // Block
75          assertEquals("[0, 1, 4, 9, 16]", result);
76          result = eval("arr = Array.new(Array.new(3, 'a')); p arr"); // Copy constructor
77          assertEquals("[\"a\", \"a\", \"a\"]", result);
78      }
79  
80      /**
81       * Test Array#[]= (store) and Array#[] (retrieve).  
82       */
83      public void testLookups() throws Exception   {
84          // value equality
85          //result = eval("key = 3; arr = []; arr[key] = 'one'; arr.store(3, 'two'); puts arr[key]");
86          //assertEquals("two", result);
87      }
88  
89      /**
90       * Array#to_s,  Array#to_a
91       */
92      public void testConversions() throws Exception   {
93          result = eval("p $h.to_s");
94          assertEquals("\"foobar\"", result);
95          result = eval("p $h.to_a");
96          assertEquals("[\"foo\", \"bar\"]", result);
97      }
98  
99      /**
100      * Array#size,  Array#length, Array#empty?
101      */
102     public void testSizeRelated() throws Exception   {
103         assertEquals("2", eval("p $h.size"));
104         assertEquals("2", eval("p $h.length"));
105         assertEquals("false", eval("p $h.empty?"));
106         assertEquals("true", eval("p Array.new().empty?"));
107     }
108 
109     /**
110      * Array#each
111      */
112     public void testIterating() throws Exception   {
113         //assertEquals("\"foo\"\n\"bar\"", eval("$h.each {|val| p val}"));
114         //assertEquals("[\"foo\", \"bar\"]", eval("p $h.each {|val| }"));
115     }
116 
117     /**
118      * This tests toArray-functionality
119      */
120     public void testToArray() throws Exception   {
121         final RubyArray arr = (RubyArray)runtime.evalScript("$h = ['foo','bar']");
122         final String   val1 = "foo";
123         final String   val2 = "bar";
124         final Object  [] outp = arr.toArray();
125         assertTrue("toArray should not return null",null != outp);
126         assertTrue("toArray should not return empty array",0 != outp.length);
127         assertEquals("first element should be \"foo\"",val1,outp[0]);
128         assertEquals("second element should be \"bar\"",val2,outp[1]);
129         final String  [] outp2 = (String  [])arr.toArray(new String  [0]);
130         assertTrue("toArray should not return null",null != outp2);
131         assertTrue("toArray should not return empty array",0 != outp2.length);
132         assertEquals("first element should be \"foo\"",val1,outp2[0]);
133         assertEquals("second element should be \"bar\"",val2,outp2[1]);
134         final String  [] outp3 = (String  [])arr.toArray(new String  [arr.size()]);
135         assertTrue("toArray should not return null",null != outp3);
136         assertTrue("toArray should not return empty array",0 != outp3.length);
137         assertEquals("first element should be \"foo\"",val1,outp3[0]);
138         assertEquals("second element should be \"bar\"",val2,outp3[1]);
139     }
140 }
141
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