| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package libcore.java.lang; |
| |
| import junit.framework.TestCase; |
| |
| import java.io.BufferedWriter; |
| import java.io.ByteArrayOutputStream; |
| import java.io.PrintStream; |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.Formatter; |
| |
| public class SystemTest extends TestCase { |
| |
| public void testLineSeparator() throws Exception { |
| try { |
| // Before Java 7, the small number of classes that wanted the line separator would |
| // use System.getProperty. Now they should use System.lineSeparator instead, and the |
| // "line.separator" property has no effect after the VM has started. |
| |
| // Test System.lineSeparator directly. |
| assertEquals("\n", System.lineSeparator()); |
| System.setProperty("line.separator", "poop"); |
| assertEquals("\n", System.lineSeparator()); |
| assertFalse(System.lineSeparator().equals(System.getProperty("line.separator"))); |
| |
| // java.io.BufferedWriter --- uses System.lineSeparator on Android but not on RI. |
| StringWriter sw = new StringWriter(); |
| BufferedWriter bw = new BufferedWriter(sw); |
| bw.newLine(); |
| bw.flush(); |
| assertEquals(System.lineSeparator(), sw.toString()); |
| assertFalse(System.lineSeparator().equals(System.getProperty("line.separator"))); |
| |
| // java.io.PrintStream --- uses System.lineSeparator on Android but not on RI. |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| new PrintStream(baos).println(); |
| assertEquals(System.lineSeparator(), new String(baos.toByteArray(), "UTF-8")); |
| assertFalse(System.lineSeparator().equals(System.getProperty("line.separator"))); |
| |
| // java.io.PrintWriter --- uses System.lineSeparator on Android but not on RI. |
| sw = new StringWriter(); |
| new PrintWriter(sw).println(); |
| assertEquals(System.lineSeparator(), sw.toString()); |
| assertFalse(System.lineSeparator().equals(System.getProperty("line.separator"))); |
| |
| // java.util.Formatter --- uses System.lineSeparator on both. |
| assertEquals(System.lineSeparator(), new Formatter().format("%n").toString()); |
| assertFalse(System.lineSeparator().equals(System.getProperty("line.separator"))); |
| } finally { |
| System.setProperty("line.separator", "\n"); |
| } |
| } |
| |
| public void testArrayCopyTargetNotArray() { |
| try { |
| System.arraycopy(new char[5], 0, "Hello", 0, 3); |
| fail(); |
| } catch (ArrayStoreException e) { |
| assertEquals("destination of type java.lang.String is not an array", e.getMessage()); |
| } |
| } |
| |
| public void testArrayCopySourceNotArray() { |
| try { |
| System.arraycopy("Hello", 0, new char[5], 0, 3); |
| fail(); |
| } catch (ArrayStoreException e) { |
| assertEquals("source of type java.lang.String is not an array", e.getMessage()); |
| } |
| } |
| |
| public void testArrayCopyArrayTypeMismatch() { |
| try { |
| System.arraycopy(new char[5], 0, new Object[5], 0, 3); |
| fail(); |
| } catch (ArrayStoreException e) { |
| assertEquals("char[] and java.lang.Object[] are incompatible array types", e.getMessage()); |
| } |
| } |
| |
| public void testArrayCopyElementTypeMismatch() { |
| try { |
| System.arraycopy(new Object[] { null, 5, "hello" }, 0, |
| new Integer[] { 1, 2, 3, null, null }, 0, 3); |
| fail(); |
| } catch (ArrayStoreException e) { |
| assertEquals("source[2] of type java.lang.String cannot be stored in destination array of type java.lang.Integer[]", e.getMessage()); |
| } |
| } |
| |
| public void testArrayCopyNull() { |
| try { |
| System.arraycopy(null, 0, new char[5], 0, 3); |
| fail(); |
| } catch (NullPointerException e) { |
| assertEquals("src == null", e.getMessage()); |
| } |
| try { |
| System.arraycopy(new char[5], 0, null, 0, 3); |
| fail(); |
| } catch (NullPointerException e) { |
| assertEquals("dst == null", e.getMessage()); |
| } |
| } |
| } |