1/* 2 * Copyright (C) 2010 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 17package libcore.java.lang; 18 19import java.io.InputStream; 20import java.lang.reflect.Array; 21import java.util.EnumMap; 22import java.util.EnumSet; 23import junit.framework.TestCase; 24 25public final class ClassCastExceptionTest extends TestCase { 26 public void testClassCast() throws Exception { 27 Object o = new Exception(); 28 try { 29 String.class.cast(o); 30 fail(); 31 } catch (ClassCastException ex) { 32 assertEquals("Cannot cast java.lang.Exception to java.lang.String", ex.getMessage()); 33 } 34 } 35 36 public void testClassAsSubclass() throws Exception { 37 try { 38 Exception.class.asSubclass(String.class); 39 fail(); 40 } catch (ClassCastException ex) { 41 assertEquals("class java.lang.Exception cannot be cast to java.lang.String", 42 ex.getMessage()); 43 } 44 } 45 46 enum E { A, B, C }; 47 enum F { A, B, C }; 48 49 public void testEnumMapPut() throws Exception { 50 EnumMap m = new EnumMap(E.class); 51 try { 52 m.put(F.A, "world"); 53 fail(); 54 } catch (ClassCastException ex) { 55 assertNotNull(ex.getMessage()); 56 } 57 } 58 59 public void testMiniEnumSetAdd() throws Exception { 60 EnumSet m = EnumSet.noneOf(E.class); 61 try { 62 m.add(F.A); 63 fail(); 64 } catch (ClassCastException ex) { 65 assertNotNull(ex.getMessage()); 66 } 67 } 68 69 public void testMiniEnumSetAddAll() throws Exception { 70 EnumSet m = EnumSet.noneOf(E.class); 71 EnumSet n = EnumSet.allOf(F.class); 72 try { 73 m.addAll(n); 74 fail(); 75 } catch (ClassCastException ex) { 76 assertNotNull(ex.getMessage()); 77 } 78 } 79 80 enum HugeE { 81 A0, B0, C0, D0, E0, F0, G0, H0, I0, J0, K0, L0, M0, N0, O0, P0, Q0, R0, S0, T0, U0, V0, W0, X0, Y0, Z0, 82 A1, B1, C1, D1, E1, F1, G1, H1, I1, J1, K1, L1, M1, N1, O1, P1, Q1, R1, S1, T1, U1, V1, W1, X1, Y1, Z1, 83 A2, B2, C2, D2, E2, F2, G2, H2, I2, J2, K2, L2, M2, N2, O2, P2, Q2, R2, S2, T2, U2, V2, W2, X2, Y2, Z2, 84 }; 85 enum HugeF { 86 A0, B0, C0, D0, E0, F0, G0, H0, I0, J0, K0, L0, M0, N0, O0, P0, Q0, R0, S0, T0, U0, V0, W0, X0, Y0, Z0, 87 A1, B1, C1, D1, E1, F1, G1, H1, I1, J1, K1, L1, M1, N1, O1, P1, Q1, R1, S1, T1, U1, V1, W1, X1, Y1, Z1, 88 A2, B2, C2, D2, E2, F2, G2, H2, I2, J2, K2, L2, M2, N2, O2, P2, Q2, R2, S2, T2, U2, V2, W2, X2, Y2, Z2, 89 }; 90 91 public void testHugeEnumSetAdd() throws Exception { 92 EnumSet m = EnumSet.noneOf(HugeE.class); 93 try { 94 m.add(HugeF.A0); 95 fail(); 96 } catch (ClassCastException ex) { 97 assertNotNull(ex.getMessage()); 98 } 99 } 100 101 public void testHugeEnumSetAddAll() throws Exception { 102 EnumSet m = EnumSet.noneOf(HugeE.class); 103 EnumSet n = EnumSet.allOf(HugeF.class); 104 try { 105 m.addAll(n); 106 fail(); 107 } catch (ClassCastException ex) { 108 assertNotNull(ex.getMessage()); 109 } 110 } 111} 112