misc/env/src/test/java/org/onap/aaf/misc/env/util/JU_StringBuilderOutputStreamTest.java

   1 /**\r
   2  * ============LICENSE_START====================================================\r
   3  * org.onap.aaf\r
   4  * ===========================================================================\r
   5  * Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.\r
   6  * ===========================================================================\r
   7  * Licensed under the Apache License, Version 2.0 (the "License");\r
   8  * you may not use this file except in compliance with the License.\r
   9  * You may obtain a copy of the License at\r
  10  * \r
  11  *      http://www.apache.org/licenses/LICENSE-2.0\r
  12  * \r
  13  * Unless required by applicable law or agreed to in writing, software\r
  14  * distributed under the License is distributed on an "AS IS" BASIS,\r
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  16  * See the License for the specific language governing permissions and\r
  17  * limitations under the License.\r
  18  * ============LICENSE_END====================================================\r
  19  *\r
  20  */\r
  21 package org.onap.aaf.misc.env.util;\r
  22 \r
  23 import static org.junit.Assert.assertEquals;\r
  24 import static org.junit.Assert.assertNotNull;\r
  25 import static org.junit.Assert.fail;\r
  26 \r
  27 import java.io.IOException;\r
  28 \r
  29 import org.junit.Before;\r
  30 import org.junit.Test;\r
  31 \r
  32 public class JU_StringBuilderOutputStreamTest {\r
  33 \r
  34         StringBuilderOutputStream streamBuilder;\r
  35 \r
  36         StringBuilder builder = new StringBuilder();\r
  37 \r
  38         @Before\r
  39         public void setUp() throws Exception {\r
  40                 streamBuilder = new StringBuilderOutputStream(builder);\r
  41         }\r
  42 \r
  43         @Test\r
  44         public void testWriteIntAndReset() {\r
  45                 streamBuilder.write(123);\r
  46 \r
  47                 assertEquals("123", streamBuilder.toString());\r
  48                 streamBuilder.reset();\r
  49                 assertEquals("", streamBuilder.toString());\r
  50         }\r
  51 \r
  52         @Test\r
  53         public void testWriteByteArrayWithoutException() throws IOException {\r
  54                 byte[] bytes = { 1, 2, 3, 4 };\r
  55                 streamBuilder.write(bytes);\r
  56                 assertEquals(4, streamBuilder.getBuffer().length());\r
  57 \r
  58                 streamBuilder.write(bytes, 1, 2);\r
  59                 assertEquals(6, streamBuilder.getBuffer().length());\r
  60 \r
  61                 streamBuilder.write(bytes, 1, 0);\r
  62                 assertEquals(6, streamBuilder.getBuffer().length());\r
  63 \r
  64                 streamBuilder.append(bytes[0]);\r
  65                 assertEquals(7, streamBuilder.getBuffer().length());\r
  66         }\r
  67 \r
  68         @Test\r
  69         public void testWriteByteArrayWithIndexOutOfBoundException() {\r
  70                 byte[] bytes = { 1, 2, 3, 4 };\r
  71 \r
  72                 try {\r
  73                         streamBuilder.write(bytes, -1, 2);\r
  74                         fail("This is supposed to throw IndexOutOfBounds Excetpion");\r
  75                 } catch (IndexOutOfBoundsException e) {\r
  76                 } catch (Exception e) {\r
  77                         fail("This should throw only IndexOutOfBounds Exception");\r
  78                 }\r
  79                 assertEquals(0, streamBuilder.getBuffer().length());\r
  80 \r
  81         }\r
  82 \r
  83         @Test\r
  84         public void testDefaultConstructor() throws IOException {\r
  85                 StringBuilderOutputStream stream = new StringBuilderOutputStream();\r
  86 \r
  87                 assertNotNull(stream.getBuffer());\r
  88                 stream.close();\r
  89         }\r
  90 \r
  91         @Test\r
  92         public void testConstructorWithPositiveDefaultCapacity() throws IOException {\r
  93                 StringBuilderOutputStream stream = new StringBuilderOutputStream(10);\r
  94 \r
  95                 assertNotNull(stream.getBuffer());\r
  96                 assertEquals(10, stream.getBuffer().capacity());\r
  97                 stream.close();\r
  98         }\r
  99 \r
 100         @Test\r
 101         public void testConstructorWithNegativeCapacityException() {\r
 102                 try {\r
 103                         StringBuilderOutputStream stream = new StringBuilderOutputStream(-1);\r
 104                         fail("This should throw IllegalArgumentException");\r
 105                 } catch (IllegalArgumentException e) {\r
 106                 } catch (Exception e) {\r
 107                         fail("This should throw only IllegalArgumentException");\r
 108                 }\r
 109         }\r
 110 \r
 111         @Test\r
 112         public void testWriteString() {\r
 113                 streamBuilder.write("1234");\r
 114 \r
 115                 assertEquals("1234", streamBuilder.toString());\r
 116 \r
 117                 streamBuilder.write("1234", 1, 2);\r
 118                 assertEquals("12342", streamBuilder.toString());\r
 119         }\r
 120 \r
 121         @Test\r
 122         public void testAppendCharSequence() {\r
 123                 streamBuilder.append("1234");\r
 124                 assertEquals("1234", streamBuilder.toString());\r
 125 \r
 126                 streamBuilder.append(null);\r
 127                 assertEquals("1234null", streamBuilder.toString());\r
 128 \r
 129                 streamBuilder.append("1234", 1, 2);\r
 130                 assertEquals("1234null2", streamBuilder.toString());\r
 131 \r
 132                 streamBuilder.append(null, 1, 2);\r
 133                 assertEquals("1234null2u", streamBuilder.toString());\r
 134         }\r
 135 }\r