| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.harmony.tests.java.io; |
| |
| import java.io.CharArrayReader; |
| import java.io.FilterReader; |
| import java.io.IOException; |
| import java.io.PushbackReader; |
| import java.io.Reader; |
| import java.io.StringReader; |
| |
| public class PushbackReaderTest extends junit.framework.TestCase { |
| |
| PushbackReader pbr; |
| |
| String pbString = "Hello World"; |
| |
| /** |
| * java.io.PushbackReader#PushbackReader(java.io.Reader) |
| */ |
| public void test_ConstructorLjava_io_Reader() { |
| // Test for method java.io.PushbackReader(java.io.Reader) |
| try { |
| pbr.close(); |
| pbr = new PushbackReader(new StringReader(pbString)); |
| char buf[] = new char[5]; |
| pbr.read(buf, 0, 5); |
| pbr.unread(buf); |
| } catch (IOException e) { |
| // Correct |
| return; |
| } |
| fail("Created reader with buffer larger than 1"); |
| } |
| |
| /** |
| * java.io.PushbackReader#PushbackReader(java.io.Reader, int) |
| */ |
| public void test_ConstructorLjava_io_ReaderI() { |
| // Test for method java.io.PushbackReader(java.io.Reader, int) |
| assertTrue("Used to test", true); |
| } |
| |
| /** |
| * java.io.PushbackReader#close() |
| */ |
| public void test_close() { |
| // Test for method void java.io.PushbackReader.close() |
| try { |
| pbr.close(); |
| pbr.read(); |
| } catch (Exception e) { |
| return; |
| } |
| fail("Failed to throw exception reading from closed reader"); |
| } |
| |
| /** |
| * java.io.PushbackReader#mark(int) |
| */ |
| public void test_markI() { |
| try { |
| pbr.mark(3); |
| } catch (IOException e) { |
| // correct |
| return; |
| } |
| fail("mark failed to throw expected IOException"); |
| } |
| |
| /** |
| * java.io.PushbackReader#markSupported() |
| */ |
| public void test_markSupported() { |
| // Test for method boolean java.io.PushbackReader.markSupported() |
| assertTrue("markSupported returned true", !pbr.markSupported()); |
| } |
| |
| /** |
| * java.io.PushbackReader#read() |
| */ |
| public void test_read() { |
| // Test for method int java.io.PushbackReader.read() |
| try { |
| char c; |
| pbr.read(); |
| c = (char) pbr.read(); |
| assertTrue("Failed to read char: " + c, c == pbString.charAt(1)); |
| Reader reader = new PushbackReader(new CharArrayReader( |
| new char[] { '\u8765' })); |
| assertTrue("Wrong double byte character", reader.read() == '\u8765'); |
| } catch (IOException e) { |
| fail("IOException during read test : " + e.getMessage()); |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#read(char[], int, int) |
| */ |
| public void test_read$CII() { |
| // Test for method int java.io.PushbackReader.read(char [], int, int) |
| try { |
| char[] c = new char[5]; |
| pbr.read(c, 0, 5); |
| assertTrue("Failed to read chars", new String(c).equals(pbString |
| .substring(0, 5))); |
| } catch (IOException e) { |
| fail("IOException during read test : " + e.getMessage()); |
| } |
| } |
| |
| public void test_read_$CII_Exception() throws IOException { |
| pbr = new PushbackReader(new StringReader(pbString), 10); |
| |
| char[] charArray = new char[10]; |
| |
| try { |
| pbr.read(null, 1, 0); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| try { |
| pbr.read(charArray, 0, -1); |
| fail(); |
| } catch (IndexOutOfBoundsException expected) { |
| } |
| try { |
| pbr.read(charArray, -1, 0); |
| fail(); |
| } catch (IndexOutOfBoundsException expected) { |
| } |
| |
| pbr.read(charArray, 0, 0); |
| pbr.read(charArray, 0, charArray.length); |
| pbr.read(charArray, charArray.length, 0); |
| |
| try { |
| pbr.read(charArray, charArray.length + 1, 0); |
| fail(); |
| } catch (IndexOutOfBoundsException expected) { |
| } |
| try { |
| pbr.read(charArray, 0, charArray.length + 1); |
| fail(); |
| } catch (IndexOutOfBoundsException expected) { |
| } |
| |
| // Can't read from a closed PushbackReader. |
| pbr.close(); |
| try { |
| pbr.read(charArray, 0, 1); |
| fail(); |
| } catch (IOException expected) { |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#ready() |
| */ |
| public void test_ready() { |
| // Test for method boolean java.io.PushbackReader.ready() |
| try { |
| char[] c = new char[11]; |
| if (c.length > 0) |
| ;// use c to avoid warning msg |
| assertTrue("Ready stream returned false to ready()", pbr.ready()); |
| } catch (IOException e) { |
| fail("IOException during ready() test : " + e.getMessage()); |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#reset() |
| */ |
| public void test_reset() { |
| try { |
| pbr.reset(); |
| } catch (IOException e) { |
| // correct |
| return; |
| } |
| fail("mark failed to throw expected IOException"); |
| } |
| |
| /** |
| * java.io.PushbackReader#unread(char[]) |
| */ |
| public void test_unread$C() { |
| // Test for method void java.io.PushbackReader.unread(char []) |
| try { |
| char[] c = new char[5]; |
| pbr.read(c, 0, 5); |
| pbr.unread(c); |
| pbr.read(c, 0, 5); |
| assertTrue("Failed to unread chars", new String(c).equals(pbString |
| .substring(0, 5))); |
| } catch (IOException e) { |
| fail("IOException during read test : " + e.getMessage()); |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#skip(long) |
| */ |
| public void test_skip$J() { |
| char chars[] = new char[] { 'h', 'e', 'l', 'l', 'o' }; |
| for (int i = 0; i < 3; i++) { |
| Reader reader, reader2; |
| switch (i) { |
| case 0: |
| reader = new StringReader(new String(chars)); |
| reader2 = new StringReader(new String(chars)); |
| break; |
| case 1: |
| reader = new FilterReader(new StringReader(new String(chars))) { |
| }; |
| reader2 = new FilterReader(new StringReader(new String(chars))) { |
| }; |
| break; |
| default: |
| reader = new CharArrayReader(chars); |
| reader2 = new CharArrayReader(chars); |
| } |
| PushbackReader pReader = new PushbackReader(reader, 2); |
| PushbackReader pReader2 = new PushbackReader(reader2, 2); |
| boolean skipped = false; |
| long numSkipped = 0; |
| try { |
| numSkipped = pReader2.skip(3); |
| pReader2.unread('a'); |
| pReader2.unread('b'); |
| numSkipped += pReader2.skip(10); |
| numSkipped += pReader2.skip(10); |
| numSkipped += pReader2.skip(10); |
| numSkipped += pReader2.skip(10); |
| numSkipped += pReader2.skip(10); |
| numSkipped += pReader2.skip(10); |
| assertEquals("Did not skip correct number of characters", |
| 7, numSkipped); |
| numSkipped = 0; |
| numSkipped += pReader.skip(2); |
| pReader.unread('i'); |
| numSkipped += pReader.skip(2); |
| numSkipped += pReader.skip(0); |
| skipped = true; |
| numSkipped += pReader.skip(-1); |
| fail("Failed to throw " |
| + new IllegalArgumentException().getClass().getName()); |
| } catch (IllegalArgumentException e) { |
| assertTrue("Failed to skip characters" + e, skipped); |
| } catch (IOException e) { |
| fail("Failed to skip characters" + e); |
| } |
| try { |
| numSkipped += pReader.skip(1); |
| numSkipped += pReader.skip(1); |
| numSkipped += pReader.skip(1); |
| assertEquals("Failed to skip all characters", 6, numSkipped); |
| long nextSkipped = pReader.skip(1); |
| assertEquals("skipped empty reader", 0, nextSkipped); |
| } catch (IOException e) { |
| fail("Failed to skip more characters" + e); |
| } |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#unread(char[], int, int) |
| */ |
| public void test_unread$CII() { |
| // Test for method void java.io.PushbackReader.unread(char [], int, int) |
| try { |
| char[] c = new char[5]; |
| pbr.read(c, 0, 5); |
| pbr.unread(c, 0, 2); |
| pbr.read(c, 0, 5); |
| assertTrue("Failed to unread chars", new String(c).equals(pbString |
| .substring(0, 2) |
| + pbString.substring(5, 8))); |
| } catch (IOException e) { |
| fail("IOException during unread test : " + e.getMessage()); |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#unread(char[], int, int) |
| */ |
| public void test_unread_$CII_NullPointerException() throws IOException { |
| //a pushback reader with one character buffer |
| pbr = new PushbackReader(new StringReader(pbString)); |
| |
| try { |
| pbr.unread(null, 0, 1); |
| fail("should throw NullPointerException"); |
| } catch (NullPointerException e) { |
| // expected |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#unread(char[], int, int) |
| */ |
| public void test_unread_$CII_Exception_InsufficientBuffer() throws IOException { |
| //a pushback reader with one character buffer |
| pbr = new PushbackReader(new StringReader(pbString)); |
| |
| //if count > buffer's size , should throw IOException |
| try { |
| pbr.unread(new char[pbString.length()], 0, 2); |
| fail("should throw IOException"); |
| } catch (IOException e) { |
| // expected |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#unread(char[], int, int) |
| */ |
| public void test_unread_$CII_ArrayIndexOutOfBoundsException() throws IOException { |
| //a pushback reader with one character buffer |
| pbr = new PushbackReader(new StringReader(pbString)); |
| |
| try { |
| pbr.unread(new char[pbString.length()], -1, -1); |
| fail("should throw ArrayIndexOutOfBoundsException"); |
| } catch (ArrayIndexOutOfBoundsException e) { |
| // expected |
| } |
| } |
| |
| /** |
| * java.io.PushbackReader#unread(int) |
| */ |
| public void test_unreadI() { |
| // Test for method void java.io.PushbackReader.unread(int) |
| |
| try { |
| int c; |
| pbr.read(); |
| c = pbr.read(); |
| pbr.unread(c); |
| assertTrue("Failed to unread char", pbr.read() == c); |
| } catch (IOException e) { |
| fail("IOException during unread test : " + e.getMessage()); |
| } |
| } |
| |
| /** |
| * Sets up the fixture, for example, open a network connection. This method |
| * is called before a test is executed. |
| */ |
| protected void setUp() { |
| pbr = new PushbackReader(new StringReader(pbString), 10); |
| } |
| |
| /** |
| * Tears down the fixture, for example, close a network connection. This |
| * method is called after a test is executed. |
| */ |
| protected void tearDown() { |
| try { |
| pbr.close(); |
| } catch (IOException e) { |
| } |
| } |
| } |