1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17
18package org.apache.harmony.tests.java.math;
19
20import java.math.BigDecimal;
21import java.math.MathContext;
22import java.math.RoundingMode;
23
24public class MathContextTest extends junit.framework.TestCase {
25
26    /**
27     * java.math.MathContext#MathContext(...)
28     */
29    public void test_MathContextConstruction() {
30        String a = "-12380945E+61";
31        BigDecimal aNumber = new BigDecimal(a);
32        MathContext mcIntRm6hd = new MathContext(6, RoundingMode.HALF_DOWN);
33        MathContext mcStr6hd = new MathContext("precision=6 roundingMode=HALF_DOWN");
34        MathContext mcInt6 = new MathContext(6);
35        MathContext mcInt134 = new MathContext(134);
36
37        // getPrecision()
38        assertEquals("MathContext.getPrecision() returns incorrect value",
39                6, mcIntRm6hd.getPrecision() );
40        assertEquals("MathContext.getPrecision() returns incorrect value",
41                134, mcInt134.getPrecision() );
42
43        // getRoundingMode()
44        assertEquals("MathContext.getRoundingMode() returns incorrect value",
45                RoundingMode.HALF_UP,
46                mcInt6.getRoundingMode());
47        assertEquals("MathContext.getRoundingMode() returns incorrect value",
48                RoundingMode.HALF_DOWN, mcIntRm6hd.getRoundingMode() );
49
50        // toString()
51        assertEquals("MathContext.toString() returning incorrect value",
52                "precision=6 roundingMode=HALF_DOWN", mcIntRm6hd.toString() );
53        assertEquals("MathContext.toString() returning incorrect value",
54                "precision=6 roundingMode=HALF_UP", mcInt6.toString() );
55
56        // equals(.)
57        assertEquals("Equal MathContexts are not equal ",
58                mcIntRm6hd, mcStr6hd );
59        assertFalse("Different MathContexts are reported as equal ",
60                mcInt6.equals(mcStr6hd) );
61        assertFalse("Different MathContexts are reported as equal ",
62                mcInt6.equals(mcInt134) );
63
64        // hashCode(.)
65        assertEquals("Equal MathContexts have different hashcodes ",
66                mcIntRm6hd.hashCode(), mcStr6hd.hashCode() );
67        assertFalse("Different MathContexts have equal hashcodes ",
68                mcInt6.hashCode() == mcStr6hd.hashCode() );
69        assertFalse("Different MathContexts have equal hashcodes ",
70                mcInt6.hashCode() == mcInt134.hashCode() );
71
72        // other:
73        BigDecimal res = aNumber.abs(mcInt6);
74        assertEquals("MathContext Constructor with int precision failed",
75                new BigDecimal("1.23809E+68"),
76                res);
77    }
78
79}
80