1 /*
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 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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20  * or visit www.oracle.com if you need additional information or have any
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23 
24 /*
25  * @test
26  * @bug 4387255
27  * @summary Verifies that ChoiceFormat can handle large numbers of choices
28  *          (previously capped at 30).
29  * @run junit Bug4387255
30  */
31 
32 import java.text.ChoiceFormat;
33 
34 import org.junit.jupiter.api.Test;
35 import org.junit.jupiter.params.ParameterizedTest;
36 import org.junit.jupiter.params.provider.Arguments;
37 import org.junit.jupiter.params.provider.MethodSource;
38 
39 import static org.junit.jupiter.api.Assertions.assertEquals;
40 import static org.junit.jupiter.params.provider.Arguments.arguments;
41 
42 public class Bug4387255 {
43     private static final double[] doubles = {
44             0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
45             10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
46             20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
47             30, 31, 32, 33, 34, 35};
48 
49     private static final String[] strings = {
50             "0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
51             "A", "B", "C", "D", "E", "F", "G", "H", "I", "J",
52             "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T",
53             "U", "V", "W", "X", "Y", "Z"};
54 
55     private static final String pattern =
56             "0#0|1#1|2#2|3#3|4#4|5#5|6#6|7#7|8#8|9#9" +
57             "|10#A|11#B|12#C|13#D|14#E|15#F|16#G|17#H|18#I|19#J" +
58             "|20#K|21#L|22#M|23#N|24#O|25#P|26#Q|27#R|28#S|29#T" +
59             "|30#U|31#V|32#W|33#X|34#Y|35#Z";
60 
61     private static final ChoiceFormat choiceFormat1 = new ChoiceFormat(doubles, strings);
62     private static final ChoiceFormat choiceFormat2 = new ChoiceFormat(pattern);
63 
64     // Ensure that both the large ChoiceFormats format each value properly
65     @ParameterizedTest
66     @MethodSource
67     public void largeChoicesTest(double db, String expectedString) {
68         String result = choiceFormat2.format(db);
69         assertEquals(expectedString, result,
70                 "Wrong format result with: " + choiceFormat2);
71     }
72 
73 
74     /*
75      * Create arguments in form of : (double, string)
76      * Each string is the expected result of ChoiceFormat.format(double)
77      */
78     private static Arguments[] largeChoicesTest() {
79         Arguments[] doublesAndStrings = new Arguments[doubles.length];
80         for (int i = 0; i < doubles.length; i++) {
81             doublesAndStrings[i] = arguments(doubles[i], strings[i]);
82         }
83         return doublesAndStrings;
84     }
85 
86     /*
87      * Check that creating a ChoiceFormat with limits and formats arrays
88      * equivalent to a string pattern are equal. (Checks that both constructors
89      * allow for a large number of choices and formats)
90      */
91     @Test
92     public void patternEqualsArraysTest() {
93         assertEquals(choiceFormat1, choiceFormat2, "Pattern is equivalent to " +
94                 "formats and limits, but ChoiceFormats are not equal");
95     }
96 }