| /* |
| * 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 tests.api.java.io; |
| |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.SequenceInputStream; |
| import java.util.Enumeration; |
| |
| import tests.support.Support_ASimpleInputStream; |
| import dalvik.annotation.TestLevel; |
| import dalvik.annotation.TestTargetClass; |
| import dalvik.annotation.TestTargetNew; |
| |
| @TestTargetClass(SequenceInputStream.class) |
| public class SequenceInputStreamTest extends junit.framework.TestCase { |
| |
| Support_ASimpleInputStream simple1, simple2; |
| SequenceInputStream si; |
| String s1 = "Hello"; |
| String s2 = "World"; |
| |
| /** |
| * @tests SequenceInputStream#SequenceInputStream(java.io.InputStream, |
| * java.io.InputStream) |
| */ |
| @TestTargetNew( |
| level = TestLevel.SUFFICIENT, |
| notes = "Checks NullPointerException. A positive test of this " + |
| "constructor is implicitely done in setUp(); if it would " + |
| "fail, all other tests will also fail.", |
| method = "SequenceInputStream", |
| args = {java.io.InputStream.class, java.io.InputStream.class} |
| ) |
| public void test_Constructor_LInputStreamLInputStream_Null() { |
| try { |
| si = new SequenceInputStream(null , null); |
| fail("Test 1: NullPointerException expected."); |
| } catch (NullPointerException e) { |
| // Expected. |
| } |
| |
| //will not throw NullPointerException if the first InputStream is not null |
| InputStream is = new ByteArrayInputStream(s1.getBytes()); |
| si = new SequenceInputStream(is , null); |
| } |
| |
| /** |
| * @tests java.io.SequenceInputStream#SequenceInputStream(java.util.Enumeration) |
| */ |
| @TestTargetNew( |
| level = TestLevel.COMPLETE, |
| notes = "", |
| method = "SequenceInputStream", |
| args = {java.util.Enumeration.class} |
| ) |
| public void test_ConstructorLjava_util_Enumeration() { |
| // Test for method java.io.SequenceInputStream(java.util.Enumeration) |
| class StreamEnumerator implements Enumeration<InputStream> { |
| InputStream streams[] = new InputStream[2]; |
| |
| int count = 0; |
| |
| public StreamEnumerator() { |
| streams[0] = new ByteArrayInputStream(s1.getBytes()); |
| streams[1] = new ByteArrayInputStream(s2.getBytes()); |
| } |
| |
| public boolean hasMoreElements() { |
| return count < streams.length; |
| } |
| |
| public InputStream nextElement() { |
| return streams[count++]; |
| } |
| } |
| |
| try { |
| si = new SequenceInputStream(new StreamEnumerator()); |
| byte buf[] = new byte[s1.length() + s2.length()]; |
| si.read(buf, 0, s1.length()); |
| si.read(buf, s1.length(), s2.length()); |
| assertTrue("Read incorrect bytes: " + new String(buf), new String( |
| buf).equals(s1 + s2)); |
| } catch (IOException e) { |
| fail("IOException during read test : " + e.getMessage()); |
| } |
| |
| } |
| |
| /** |
| * @throws IOException |
| * @tests java.io.SequenceInputStream#available() |
| */ |
| @TestTargetNew( |
| level = TestLevel.COMPLETE, |
| notes = "", |
| method = "available", |
| args = {} |
| ) |
| public void test_available() throws IOException { |
| assertEquals("Returned incorrect number of bytes!", s1.length(), si.available()); |
| simple2.throwExceptionOnNextUse = true; |
| assertTrue("IOException on second stream should not affect at this time!", |
| si.available() == s1.length()); |
| simple1.throwExceptionOnNextUse = true; |
| try { |
| si.available(); |
| fail("IOException not thrown!"); |
| } catch (IOException e) { |
| // expected |
| } |
| } |
| |
| /** |
| * @tests java.io.SequenceInputStream#close() |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "", |
| method = "close", |
| args = {} |
| ) |
| public void test_close() throws IOException { |
| assertTrue("Something is available!", si.available() > 0); |
| si.close(); |
| //will not throw IOException to close a stream which is closed already |
| si.close(); |
| assertTrue("Nothing is available, now!", si.available() <= 0); |
| // assertEquals("And not on the underlying streams either!", 0, simple1.available()); |
| // assertTrue("And not on the underlying streams either!", simple1.available() <= 0); |
| // assertTrue("And not on the underlying streams either!", simple2.available() <= 0); |
| } |
| |
| /** |
| * @tests java.io.SequenceInputStream#close() |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "", |
| method = "close", |
| args = {} |
| ) |
| public void test_close2() throws IOException { |
| simple1.throwExceptionOnNextUse = true; |
| try { |
| si.close(); |
| fail("IOException not thrown!"); |
| } catch (IOException e) { |
| // expected |
| } |
| } |
| |
| /** |
| * @tests java.io.SequenceInputStream#read() |
| */ |
| @TestTargetNew( |
| level = TestLevel.COMPLETE, |
| notes = "", |
| method = "read", |
| args = {} |
| ) |
| public void test_read() throws IOException { |
| si.read(); |
| assertEquals("Test 1: Incorrect char read;", |
| s1.charAt(1), (char) si.read()); |
| |
| // We are still reading from the first input stream, should be ok. |
| simple2.throwExceptionOnNextUse = true; |
| try { |
| assertEquals("Test 2: Incorrect char read;", |
| s1.charAt(2), (char) si.read()); |
| } catch (IOException e) { |
| fail("Test 3: Unexpected IOException."); |
| } |
| |
| simple1.throwExceptionOnNextUse = true; |
| try { |
| si.read(); |
| fail("Test 4: IOException expected."); |
| } catch (IOException e) { |
| // Expected. |
| } |
| simple1.throwExceptionOnNextUse = false; |
| |
| // Reading bytes 4 and 5 of the first input stream should be ok again. |
| si.read(); |
| si.read(); |
| |
| // Reading the first byte of the second input stream should fail. |
| try { |
| si.read(); |
| fail("Test 5: IOException expected."); |
| } catch (IOException e) { |
| // Expected. |
| } |
| |
| // Reading from the second input stream should be ok now. |
| simple2.throwExceptionOnNextUse = false; |
| try { |
| assertEquals("Test 6: Incorrect char read;", |
| s2.charAt(0), (char) si.read()); |
| } catch (IOException e) { |
| fail("Test 7: Unexpected IOException."); |
| } |
| |
| si.close(); |
| assertTrue("Test 8: -1 expected when reading from a closed " + |
| "sequence input stream.", si.read() == -1); |
| } |
| |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "", |
| method = "read", |
| args = {byte[].class, int.class, int.class} |
| ) |
| public void test_read_exc() throws IOException { |
| simple2.throwExceptionOnNextUse = true; |
| assertEquals("IOException on second stream should not affect at this time!", 72, si.read()); |
| simple1.throwExceptionOnNextUse = true; |
| try { |
| si.read(); |
| fail("IOException not thrown!"); |
| } catch (IOException e) { |
| // expected |
| } |
| } |
| |
| /** |
| * @tests java.io.SequenceInputStream#read(byte[], int, int) |
| */ |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "", |
| method = "read", |
| args = {byte[].class, int.class, int.class} |
| ) |
| public void test_read$BII() throws IOException { |
| // Test for method int java.io.SequenceInputStream.read(byte [], int, |
| // int) |
| try { |
| byte buf[] = new byte[s1.length() + s2.length()]; |
| si.read(buf, 0, s1.length()); |
| si.read(buf, s1.length(), s2.length()); |
| assertTrue("Read incorrect bytes: " + new String(buf), new String( |
| buf).equals(s1 + s2)); |
| } catch (IOException e) { |
| fail("IOException during read test : " + e.getMessage()); |
| } |
| |
| ByteArrayInputStream bis1 = new ByteArrayInputStream( |
| new byte[] { 1, 2, 3, 4 }); |
| ByteArrayInputStream bis2 = new ByteArrayInputStream( |
| new byte[] { 5, 6, 7, 8 }); |
| SequenceInputStream sis = new SequenceInputStream(bis1, bis2); |
| |
| try { |
| sis.read(null, 0, 2); |
| fail("Expected NullPointerException exception"); |
| } catch (NullPointerException e) { |
| // expected |
| } |
| |
| assertEquals(4, sis.read(new byte[10], 0, 8)); |
| // The call to read will return after the end of the first substream is |
| // reached. So the next call to read will close the first substream |
| // because the read call to that substream will return -1, and |
| // it will continue reading from the second substream. |
| assertEquals(5, sis.read()); |
| |
| //returns -1 if the stream is closed , do not throw IOException |
| byte[] array = new byte[] { 1 , 2 , 3 ,4 }; |
| sis.close(); |
| int result = sis.read(array , 0 , 5); |
| assertEquals(-1 , result); |
| } |
| |
| @TestTargetNew( |
| level = TestLevel.PARTIAL_COMPLETE, |
| notes = "", |
| method = "read", |
| args = {byte[].class, int.class, int.class} |
| ) |
| public void test_read$BII_Excpetion() throws IOException { |
| byte[] buf = new byte[4]; |
| si.read(buf, 0, 2); |
| si.read(buf, 2, 1); |
| simple2.throwExceptionOnNextUse = true; |
| si.read(buf, 3, 1); |
| assertEquals("Wrong stuff read!", "Hell", new String(buf)); |
| simple1.throwExceptionOnNextUse = true; |
| try { |
| si.read(buf, 3, 1); |
| fail("IOException not thrown!"); |
| } catch (IOException e) { |
| // expected |
| } |
| |
| buf = new byte[10]; |
| simple1 = new Support_ASimpleInputStream(s1); |
| simple2 = new Support_ASimpleInputStream(s2); |
| si = new SequenceInputStream(simple1, simple2); |
| try { |
| si.read(buf, -1, 1); |
| fail("IndexOutOfBoundsException was not thrown"); |
| } catch (IndexOutOfBoundsException e) { |
| // Expected |
| } |
| try { |
| si.read(buf, 0, -1); |
| fail("IndexOutOfBoundsException was not thrown"); |
| } catch (IndexOutOfBoundsException e) { |
| // Expected |
| } |
| try { |
| si.read(buf, 1, 10); |
| fail("IndexOutOfBoundsException was not thrown"); |
| } catch (IndexOutOfBoundsException e) { |
| // Expected |
| } |
| } |
| |
| /** |
| * Sets up the fixture, for example, open a network connection. This method |
| * is called before a test is executed. |
| */ |
| protected void setUp() { |
| simple1 = new Support_ASimpleInputStream(s1); |
| simple2 = new Support_ASimpleInputStream(s2); |
| si = new SequenceInputStream(simple1, simple2); |
| } |
| |
| /** |
| * Tears down the fixture, for example, close a network connection. This |
| * method is called after a test is executed. |
| */ |
| protected void tearDown() { |
| } |
| } |