mcs/class/System/Test/Microsoft.VisualBasic/CodeGeneratorFromBinaryOperatorTest.cs

   1 //
   2 // Microsoft.VisualBasic.* Test Cases
   3 //
   4 // Authors:
   5 //      Frederik Carlier  <frederik.carlier@carlier-online.be>
   6 //      Rolf Bjarne Kvinge <RKvinge@novell.com>
   7 //
   8 // (c) 2005 Novell
   9 //
  10 using System;
  11 using System.IO;
  12 using System.Text;
  13 using System.CodeDom;
  14 using System.CodeDom.Compiler;
  15
  16 using Microsoft.VisualBasic;
  17
  18 using NUnit.Framework;
  19
  20 namespace MonoTests.Microsoft.VisualBasic
  21 {
  22         [TestFixture]
  23         public class CodeGeneratorFromBinaryOperatorTest
  24         {
  25                 VBCodeProvider provider;
  26                 ICodeGenerator generator;
  27                 CodeGeneratorOptions options;
  28
  29                 [SetUp]
  30                 public void SetUp ()
  31                 {
  32                         provider = new VBCodeProvider ();
  33                         generator = provider.CreateGenerator ();
  34                         options = new CodeGeneratorOptions ();
  35                 }
  36
  37                 [Test]
  38                 public void TypeReferenceExpressionTest ()
  39                 {
  40                         StringBuilder sb = new StringBuilder();
  41
  42                         using (StringWriter sw = new StringWriter (sb)) {
  43                                 CodeThisReferenceExpression thisRef = new CodeThisReferenceExpression();
  44                                 CodeFieldReferenceExpression parentField = new CodeFieldReferenceExpression();
  45                                 parentField.TargetObject = thisRef;
  46                                 parentField.FieldName = "Parent";
  47
  48                                 CodeBinaryOperatorExpression expression = new CodeBinaryOperatorExpression(
  49                                         parentField,
  50                                         CodeBinaryOperatorType.IdentityInequality,
  51                                         new CodePrimitiveExpression(null));
  52
  53                                 Assert.AreEqual ("(Not (Me.Parent) Is Nothing)", Generate (expression, sw), "#1");
  54                                 sw.Close ();
  55                         }
  56
  57                         sb = new StringBuilder();
  58                         using (StringWriter sw = new StringWriter (sb)) {
  59                                 CodeThisReferenceExpression thisRef = new CodeThisReferenceExpression();
  60                                 CodeFieldReferenceExpression parentField = new CodeFieldReferenceExpression();
  61                                 parentField.TargetObject = thisRef;
  62                                 parentField.FieldName = "Parent";
  63
  64                                 CodeBinaryOperatorExpression expression = new CodeBinaryOperatorExpression(
  65                                         new CodePrimitiveExpression(null),
  66                                         CodeBinaryOperatorType.IdentityInequality,
  67                                         parentField);
  68
  69                                 Assert.AreEqual ("(Not (Me.Parent) Is Nothing)", Generate (expression, sw), "#2");
  70                                 sw.Close ();
  71                         }
  72                 }
  73
  74                 private string Generate (CodeExpression expression, StringWriter sw)
  75                 {
  76                         generator.GenerateCodeFromExpression (expression, sw, options);
  77                         return sw.ToString ();
  78                 }
  79         }
  80 }