mcs/class/corlib/Test/System.IO/StringWriterTest.cs

   1 //\r
   2 // System.IO.StringWriter\r
   3 //\r
   4 // Authors:
   5 //      Marcin Szczepanski (marcins@zipworld.com.au)\r
   6 //      Ben Maurer <bmaurer@users.sourceforge.net>
   7 //\r
   8 // TODO: Add some testing for exceptions\r
   9 //\r
  10 \r
  11 using NUnit.Framework;\r
  12 using System.IO;\r
  13 using System;
  14 using System.Globalization;\r
  15 using System.Text;\r
  16 \r
  17 namespace MonoTests.System.IO {\r
  18 \r
  19 public class StringWriterTest : TestCase {\r
  20         public void TestConstructors() {\r
  21                 StringBuilder sb = new StringBuilder("Test String");\r
  22 \r
  23                 StringWriter writer = new StringWriter( sb );\r
  24                 AssertEquals( sb, writer.GetStringBuilder() );\r
  25         }
  26         \r
  27         public void TestCultureInfoConstructor() {\r
  28 \r
  29                 StringWriter writer = new StringWriter(CultureInfo.InvariantCulture);\r
  30                 AssertNotNull( writer.GetStringBuilder() );
  31
  32                 AssertEquals( String.Empty, writer.ToString() );
  33
  34                 writer.Write( 'A' );
  35                 AssertEquals( "A", writer.ToString() );
  36
  37                 writer.Write( " foo" );
  38                 AssertEquals( "A foo", writer.ToString() );
  39
  40
  41                 char[] testBuffer = "Test String".ToCharArray();
  42
  43                 writer.Write( testBuffer, 0, 4 );
  44                 AssertEquals( "A fooTest", writer.ToString() );
  45
  46                 writer.Write( testBuffer, 5, 6 );
  47                 AssertEquals( "A fooTestString", writer.ToString() );
  48
  49                 writer = new StringWriter(CultureInfo.InvariantCulture);
  50                 writer.Write(null as string);
  51                 AssertEquals( "", writer.ToString() );\r
  52         }\r
  53 \r
  54         public void TestWrite() {\r
  55                 StringWriter writer = new StringWriter();\r
  56 \r
  57                 AssertEquals( String.Empty, writer.ToString() );\r
  58                 \r
  59                 writer.Write( 'A' );\r
  60                 AssertEquals( "A", writer.ToString() );\r
  61 \r
  62                 writer.Write( " foo" );\r
  63                 AssertEquals( "A foo", writer.ToString() );\r
  64 \r
  65                 \r
  66                 char[] testBuffer = "Test String".ToCharArray();\r
  67 \r
  68                 writer.Write( testBuffer, 0, 4 );\r
  69                 AssertEquals( "A fooTest", writer.ToString() );\r
  70 \r
  71                 writer.Write( testBuffer, 5, 6 );\r
  72                 AssertEquals( "A fooTestString", writer.ToString() );\r
  73 \r
  74                 writer = new StringWriter ();\r
  75                 writer.Write(null as string);\r
  76                 AssertEquals( "", writer.ToString() );\r
  77 \r
  78         }\r
  79 \r
  80         public void TestNewLine() {\r
  81                 \r
  82                 StringWriter writer = new StringWriter();\r
  83                 \r
  84                 writer.NewLine = "\n\r";\r
  85                 AssertEquals ("NewLine 1", "\n\r", writer.NewLine);\r
  86                 \r
  87                 writer.WriteLine ("first");\r
  88                 AssertEquals ("NewLine 2", "first\n\r", writer.ToString());\r
  89                 \r
  90                 writer.NewLine = "\n";\r
  91                 AssertEquals ("NewLine 3", "first\n\r", writer.ToString());\r
  92                 \r
  93                 writer.WriteLine ("second");\r
  94                 AssertEquals ("NewLine 4", "first\n\rsecond\n", writer.ToString());\r
  95                 \r
  96         }\r
  97         \r
  98         public void TestWriteLine() {\r
  99                 \r
 100                 StringWriter writer = new StringWriter();\r
 101                 writer.NewLine = "\n";\r
 102                 \r
 103                 writer.WriteLine ("first line");\r
 104                 writer.WriteLine ("second line");\r
 105                                 \r
 106                 AssertEquals ("WriteLine 1", "first line\nsecond line\n", writer.ToString ());\r
 107                 writer.Close ();\r
 108         }\r
 109         \r
 110         public void TestGetStringBuilder() {\r
 111                 \r
 112                 StringWriter writer = new StringWriter ();\r
 113                 writer.Write ("line");\r
 114                 StringBuilder builder = writer.GetStringBuilder ();\r
 115                 builder.Append (12);\r
 116                 AssertEquals ("GetStringBuilder 1", "line12", writer.ToString ());\r
 117                 writer.Write ("test");\r
 118                 AssertEquals ("GetStringBuilder 2", "line12test", builder.ToString ());                         \r
 119         }\r
 120         \r
 121         public void TestClose() {\r
 122                 \r
 123                 StringWriter writer = new StringWriter ();\r
 124                 writer.Write ("mono");\r
 125                 writer.Close ();\r
 126                 \r
 127                 try {\r
 128                         writer.Write ("kicks ass");\r
 129                         Fail ("Close 1");\r
 130                 } catch (Exception e) {\r
 131                         AssertEquals ("Close 2", typeof (ObjectDisposedException), e.GetType ());\r
 132                 }\r
 133 \r
 134                 AssertEquals ("Close 3", "mono", writer.ToString ());\r
 135                 writer.Flush ();\r
 136                 StringBuilder builder = writer.GetStringBuilder ();\r
 137                 AssertEquals ("Close 4", "mono", builder.ToString ());\r
 138                 \r
 139                 builder.Append (" kicks ass");\r
 140                 AssertEquals ("Close 5", "mono kicks ass", writer.ToString ());\r
 141         }\r
 142 \r
 143         public void TestExceptions () {\r
 144                 \r
 145                 try {\r
 146                         StringWriter writer = new StringWriter (null as StringBuilder);\r
 147                         Fail();\r
 148                 } catch (Exception e) {\r
 149                         AssertEquals ("Exceptions 1", typeof (ArgumentNullException), e.GetType ());\r
 150                 }\r
 151                 {\r
 152                 StringWriter writer = new StringWriter (null as IFormatProvider);\r
 153                 }\r
 154                 try {\r
 155                         StringWriter writer = new StringWriter (null as StringBuilder, null as IFormatProvider);\r
 156                         Fail ();\r
 157                 } catch (Exception e) {\r
 158                         AssertEquals ("Exceptions 2", typeof (ArgumentNullException), e.GetType ());\r
 159                 }                               \r
 160         }\r
 161 \r
 162 \r
 163 }\r
 164 \r
 165 }\r