1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package libcore.java.math; 18 19 import java.math.MathContext; 20 import java.math.RoundingMode; 21 22 public class MathContextTest extends junit.framework.TestCase { 23 public void testConstructor() throws Exception { 24 // All the rounding modes. 25 for (RoundingMode rm : RoundingMode.values()) { 26 MathContext mc = new MathContext("precision=1 roundingMode=" + rm); 27 assertEquals(1, mc.getPrecision()); 28 assertEquals(rm, mc.getRoundingMode()); 29 } 30 31 // A few precisions. 32 for (int p = 0; p < 10; ++p) { 33 MathContext mc = new MathContext("precision=" + p + " roundingMode=" + RoundingMode.UP); 34 assertEquals(p, mc.getPrecision()); 35 assertEquals(RoundingMode.UP, mc.getRoundingMode()); 36 } 37 38 // Case-sensitive keywords. 39 new MathContext("precision=1 roundingMode=UP"); 40 try { 41 new MathContext("Precision=1 roundingMode=UP"); 42 fail(); 43 } catch (IllegalArgumentException expected) { 44 } 45 try { 46 new MathContext("precision=1 RoundingMode=UP"); 47 fail(); 48 } catch (IllegalArgumentException expected) { 49 } 50 51 // Case-sensitive rounding modes. 52 try { 53 new MathContext("precision=1 roundingMode=up"); 54 fail(); 55 } catch (IllegalArgumentException expected) { 56 } 57 58 // Exactly one space (U+0020). 59 try { 60 new MathContext("precision=1roundingMode=UP"); 61 fail(); 62 } catch (IllegalArgumentException expected) { 63 } 64 try { 65 new MathContext("precision=1 roundingMode=UP"); 66 fail(); 67 } catch (IllegalArgumentException expected) { 68 } 69 try { 70 new MathContext("precision=1\troundingMode=UP"); 71 fail(); 72 } catch (IllegalArgumentException expected) { 73 } 74 75 // No leading or trailing space. 76 try { 77 new MathContext(" precision=1 roundingMode=UP"); 78 fail(); 79 } catch (IllegalArgumentException expected) { 80 } 81 try { 82 new MathContext("precision=1 roundingMode=UP "); 83 fail(); 84 } catch (IllegalArgumentException expected) { 85 } 86 } 87 } 88
