mcs/class/corlib/Test/System.Reflection/ParameterInfoTest.cs

   1 //
   2 // ParameterInfoTest - NUnit Test Cases for the ParameterInfo class
   3 //
   4 // Zoltan Varga (vargaz@freemail.hu)
   5 //
   6 // (C) Ximian, Inc.  http://www.ximian.com
   7 // Copyright 2011 Xamarin Inc (http://www.xamarin.com).
   8 //
   9 //
  10
  11 using System;
  12 using System.Threading;
  13 using System.Reflection;
  14 using System.Runtime.InteropServices;
  15 using System.Runtime.CompilerServices;
  16 using System.Collections.Generic;
  17
  18 using NUnit.Framework;
  19
  20 namespace MonoTests.System.Reflection
  21 {
  22         public class Marshal1 : ICustomMarshaler
  23         {
  24                 public static ICustomMarshaler GetInstance (string s)
  25                 {
  26                         return new Marshal1 ();
  27                 }
  28
  29                 public void CleanUpManagedData (object managedObj)
  30                 {
  31                 }
  32
  33                 public void CleanUpNativeData (IntPtr pNativeData)
  34                 {
  35                 }
  36
  37                 public int GetNativeDataSize ()
  38                 {
  39                         return 4;
  40                 }
  41
  42                 public IntPtr MarshalManagedToNative (object managedObj)
  43                 {
  44                         return IntPtr.Zero;
  45                 }
  46
  47                 public object MarshalNativeToManaged (IntPtr pNativeData)
  48                 {
  49                         return null;
  50                 }
  51         }
  52
  53         [TestFixture]
  54         public class ParameterInfoTest
  55         {
  56                 [Test]
  57                 public void IsDefined_AttributeType_Null ()
  58                 {
  59                         MethodInfo mi = typeof (object).GetMethod ("Equals",
  60                                 new Type [1] { typeof (object) });
  61                         ParameterInfo pi = mi.GetParameters () [0];
  62
  63                         try {
  64                                 pi.IsDefined ((Type) null, false);
  65                                 Assert.Fail ("#1");
  66                         } catch (ArgumentNullException ex) {
  67                                 Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#2");
  68                                 Assert.IsNull (ex.InnerException, "#3");
  69                                 Assert.IsNotNull (ex.Message, "#4");
  70                                 Assert.IsNotNull (ex.ParamName, "#5");
  71                                 Assert.AreEqual ("attributeType", ex.ParamName, "#6");
  72                         }
  73                 }
  74
  75 #if NET_2_0 && !NET_2_1
  76                 public enum ParamEnum {
  77                         None = 0,
  78                         Foo = 1,
  79                         Bar = 2
  80                 };
  81
  82                 public static void paramMethod (int i, [In] int j, [Out] int k, [Optional] int l, [In,Out] int m, ParamEnum n = ParamEnum.Foo)
  83                 {
  84                 }
  85
  86 #if !TARGET_JVM // No support for extern methods in TARGET_JVM
  87                 [DllImport ("foo")]
  88                 public extern static void marshalAsMethod (
  89                         [MarshalAs(UnmanagedType.Bool)]int p0,
  90                         [MarshalAs(UnmanagedType.LPArray, ArraySubType=UnmanagedType.LPStr)] string [] p1,
  91                         [MarshalAs( UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof (Marshal1), MarshalCookie = "5")] object p2);
  92 #endif
  93                 [Test]
  94                 public void DefaultValueEnum () {
  95                         ParameterInfo[] info = typeof (ParameterInfoTest).GetMethod ("paramMethod").GetParameters ();
  96
  97                         Assert.AreEqual (typeof (ParamEnum), info [5].DefaultValue.GetType (), "#1");
  98                         Assert.AreEqual (ParamEnum.Foo, info [5].DefaultValue, "#2");
  99                 }
 100
 101                 public static void Sample2 ([DecimalConstantAttribute(2,2,2,2,2)] decimal a, [DateTimeConstantAttribute(123456)] DateTime b) {}
 102
 103                 [Test]
 104                 public void DefaultValuesFromCustomAttr () {
 105                         ParameterInfo[] info = typeof (ParameterInfoTest).GetMethod ("Sample2").GetParameters ();
 106
 107                         Assert.AreEqual (typeof (Decimal), info [0].DefaultValue.GetType (), "#1");
 108                         Assert.AreEqual (typeof (DateTime), info [1].DefaultValue.GetType (), "#2");
 109                 }
 110
 111                 [Test] // bug #339013
 112                 public void TestDefaultValues ()
 113                 {
 114                         ParameterInfo [] pi = typeof (ParameterInfoTest).GetMethod ("Sample").GetParameters ();
 115
 116                         Assert.AreEqual (pi [0].DefaultValue.GetType (), typeof (DBNull), "#1");
 117                         Assert.AreEqual (pi [1].DefaultValue.GetType (), typeof (Missing), "#2");
 118                 }
 119
 120                 public void Sample (int a, [Optional] int b)
 121                 {
 122                 }
 123
 124                 [Test]
 125                 public void PseudoCustomAttributes () {
 126                         ParameterInfo[] info = typeof (ParameterInfoTest).GetMethod ("paramMethod").GetParameters ();
 127                         Assert.AreEqual (0, info[0].GetCustomAttributes (true).Length, "#A1");
 128                         Assert.AreEqual (1, info[1].GetCustomAttributes (typeof (InAttribute), true).Length, "#A2");
 129                         Assert.AreEqual (1, info[2].GetCustomAttributes (typeof (OutAttribute), true).Length, "#A3");
 130                         Assert.AreEqual (1, info[3].GetCustomAttributes (typeof (OptionalAttribute), true).Length, "#A4");
 131                         Assert.AreEqual (2, info[4].GetCustomAttributes (true).Length, "#A5");
 132
 133 #if !TARGET_JVM // No support for extern methods in TARGET_JVM
 134                         ParameterInfo[] pi = typeof (ParameterInfoTest).GetMethod ("marshalAsMethod").GetParameters ();
 135                         MarshalAsAttribute attr;
 136
 137                         attr = (MarshalAsAttribute)(pi [0].GetCustomAttributes (true) [0]);
 138                         Assert.AreEqual (UnmanagedType.Bool, attr.Value, "#B");
 139
 140                         attr = (MarshalAsAttribute)(pi [1].GetCustomAttributes (true) [0]);
 141                         Assert.AreEqual (UnmanagedType.LPArray, attr.Value, "#C1");
 142                         Assert.AreEqual (UnmanagedType.LPStr, attr.ArraySubType, "#C2");
 143
 144                         attr = (MarshalAsAttribute)(pi [2].GetCustomAttributes (true) [0]);
 145                         Assert.AreEqual (UnmanagedType.CustomMarshaler, attr.Value, "#D1");
 146                         Assert.AreEqual ("5", attr.MarshalCookie, "#D2");
 147                         Assert.AreEqual (typeof (Marshal1), Type.GetType (attr.MarshalType), "#D3");
 148 #endif
 149                 }
 150
 151                 [Test] // bug #342536
 152                 public void Generics_Name ()
 153                 {
 154                         MethodInfo mi;
 155                         Type type;
 156                         ParameterInfo [] info;
 157
 158                         type = typeof (BaseType<string>);
 159
 160                         mi = type.GetMethod ("GetItems");
 161                         Assert.IsNotNull (mi, "#A1");
 162                         info = mi.GetParameters ();
 163                         Assert.AreEqual (1, info.Length, "#A2");
 164                         Assert.AreEqual ("count", info [0].Name, "#A3");
 165
 166                         mi = type.GetMethod ("Add");
 167                         Assert.IsNotNull (mi, "#B1");
 168                         info = mi.GetParameters ();
 169                         Assert.AreEqual (2, info.Length, "#B2");
 170                         Assert.AreEqual ("item", info [0].Name, "#B3");
 171                         Assert.AreEqual ("index", info [1].Name, "#B4");
 172
 173                         mi = type.GetMethod ("Create");
 174                         Assert.IsNotNull (mi, "#C1");
 175                         info = mi.GetParameters ();
 176                         Assert.AreEqual (2, info.Length, "#C2");
 177                         Assert.AreEqual ("x", info [0].Name, "#C3");
 178                         Assert.AreEqual ("item", info [1].Name, "#C4");
 179                 }
 180
 181                 public class BaseType <T>
 182                 {
 183                         public void GetItems (int count)
 184                         {
 185                         }
 186
 187                         public void Add (T item, int index)
 188                         {
 189                         }
 190
 191                         public V Create <V> (int x, T item)
 192                         {
 193                                 return default (V);
 194                         }
 195                 }
 196 #endif
 197
 198                 [Test]
 199                 public void Member () {
 200                         ParameterInfo parm = typeof (Derived).GetMethod ("SomeMethod").GetParameters()[0];
 201                         Assert.AreEqual (typeof (Derived), parm.Member.ReflectedType);
 202                         Assert.AreEqual (typeof (Base), parm.Member.DeclaringType);
 203                 }
 204
 205                 [Test]
 206                 public void ArrayMethodParameters ()
 207                 {
 208                         var matrix_int_get = typeof (int[,,]).GetMethod ("Get");
 209                         var parameters = matrix_int_get.GetParameters ();
 210
 211                         Assert.AreEqual (3, parameters.Length);
 212                         Assert.AreEqual (0, parameters [0].GetCustomAttributes (false).Length);
 213                         Assert.AreEqual (0, parameters [1].GetCustomAttributes (false).Length);
 214                         Assert.AreEqual (0, parameters [2].GetCustomAttributes (false).Length);
 215                 }
 216
 217                 class Base
 218                 {
 219                         public void SomeMethod( int x )
 220                         {
 221                         }
 222                 }
 223
 224                 class Derived : Base
 225                 {
 226                 }
 227
 228 #if NET_4_0
 229                 public static void TestC (decimal u = decimal.MaxValue) {
 230                 }
 231
 232                 [Test]
 233                 public void DefaultValueDecimal () {
 234                         var info = typeof (ParameterInfoTest).GetMethod ("TestC").GetParameters ();
 235                         Assert.AreEqual (decimal.MaxValue, info [0].DefaultValue);
 236                 }
 237
 238                 class MyParameterInfo2 : ParameterInfo
 239                 {
 240                         public ParameterAttributes MyAttrsImpl;
 241
 242                         public override ParameterAttributes Attributes {
 243                                 get {return MyAttrsImpl;}
 244                         }
 245
 246                         public IList<CustomAttributeData> myList = new List<CustomAttributeData> ();
 247
 248                         public override IList<CustomAttributeData> GetCustomAttributesData () {
 249                                 return myList;
 250                         }
 251                 }
 252
 253                 class MyParameterInfo : ParameterInfo
 254                 {
 255                         public void SetClassImpl (Type t)
 256                         {
 257                                 ClassImpl = t;
 258                         }
 259
 260                         public void SetDefaultValueImpl (object o)
 261                         {
 262                                 DefaultValueImpl = o;
 263                         }
 264
 265                         public void SetMemberImpl (MemberInfo o)
 266                         {
 267                                 MemberImpl = o;
 268                         }
 269
 270                         public void SetNameImpl (string s)
 271                         {
 272                                 NameImpl = s;
 273                         }
 274
 275                         public void SetPositionImpl (int i)
 276                         {
 277                                 PositionImpl = i;
 278                         }
 279
 280                         public void SetAttrsImpl (ParameterAttributes a)
 281                         {
 282                                 AttrsImpl = a;
 283                         }
 284
 285                         public void TestMethod (int a) {}
 286                         public int this[int x, int y] {
 287                                 get { return 0; }
 288                                 set { }
 289                         }
 290
 291                 }
 292
 293                 [Test]
 294                 public void SubClassWithNoOverrides ()
 295                 {
 296                         var p = new MyParameterInfo ();
 297                         Assert.IsFalse (p.IsDefined (typeof (FlagsAttribute), false), "#1");
 298                         Assert.AreEqual (0, p.GetCustomAttributes (false).Length, "#2");
 299                         Assert.AreEqual (0, p.GetCustomAttributes (typeof (FlagsAttribute), false).Length, "#3");
 300                         Assert.AreEqual (0, p.GetOptionalCustomModifiers ().Length, "#4");
 301                         Assert.AreEqual (0, p.GetRequiredCustomModifiers ().Length, "#5");
 302 #if NET_4_5
 303                         try {
 304                                 var ign = p.HasDefaultValue;
 305                                 Assert.Fail ("#6");
 306                         } catch (NotImplementedException) {
 307                         }
 308 #endif
 309                         Assert.IsFalse (p.IsIn, "#7");
 310                         Assert.IsFalse (p.IsLcid, "#8");
 311                         Assert.IsFalse (p.IsOptional, "#9");
 312                         Assert.IsFalse (p.IsOut, "#10");
 313                         Assert.IsFalse (p.IsRetval, "#10");
 314 #if NET_4_5
 315                         try {
 316                                 var ign = p.CustomAttributes;
 317                                 Assert.Fail ("#11");
 318                         } catch (NotImplementedException) {
 319                         }
 320 #endif
 321                         try {
 322                                 p.GetCustomAttributesData ();
 323                                 Assert.Fail ("#12");
 324                         } catch (NotImplementedException) {
 325                         }
 326
 327                         Assert.AreEqual (0x8000000, p.MetadataToken, "#13");
 328                         Assert.AreEqual (0, p.Position, "#14");
 329                         try {
 330                                 var ign = p.DefaultValue;
 331                                 Assert.Fail ("#15");
 332                         } catch (NotImplementedException) {
 333                         }
 334                         try {
 335                                 var ign = p.RawDefaultValue;
 336                                 Assert.Fail ("#16");
 337                         } catch (NotImplementedException) {
 338                         }
 339                         Assert.IsNull (p.Member, "#17");
 340                         Assert.AreEqual (ParameterAttributes.None, p.Attributes, "#18");
 341                         Assert.IsNull (p.Name, "#19");
 342                         Assert.IsNull (p.ParameterType, "#20");
 343                 }
 344
 345                 [Test]
 346                 public void SubClassWithValuesSet ()
 347                 {
 348                         var p = new MyParameterInfo ();
 349                         p.SetClassImpl (typeof (Decimal));
 350                         Assert.AreEqual (typeof (Decimal), p.ParameterType, "#1");
 351                         p.SetClassImpl (null);
 352
 353                         p.SetDefaultValueImpl ("foo");
 354                         try {
 355                                 var ign = p.DefaultValue;
 356                                 Assert.Fail ("#2");
 357                         } catch (NotImplementedException) {
 358                         }
 359                         p.SetDefaultValueImpl (null);
 360
 361                         var obj = typeof (object);
 362                         p.SetMemberImpl (obj);
 363                         Assert.AreEqual (obj, p.Member, "#3");
 364                         Assert.AreEqual (0x8000000, p.MetadataToken, "#4");
 365                         p.SetMemberImpl (null);
 366
 367                         var method = typeof (MyParameterInfo).GetMethod ("TestMethod");
 368                         p.SetMemberImpl (method);
 369                         Assert.IsNotNull (method, "#5");
 370                         Assert.AreEqual (method, p.Member, "#6");
 371                         Assert.AreEqual (0x8000000, p.MetadataToken, "#7");
 372                         p.SetMemberImpl (null);
 373
 374                         var property = typeof (MyParameterInfo).GetProperty ("Item");
 375                         p.SetMemberImpl (property);
 376                         Assert.IsNotNull (property, "#8");
 377                         Assert.AreEqual (property, p.Member, "#9");
 378                         Assert.AreEqual (0x8000000, p.MetadataToken, "#10");
 379                         p.SetMemberImpl (null);
 380
 381                         p.SetNameImpl ("foo");
 382                         Assert.AreEqual ("foo", p.Name, "#11");
 383                         p.SetNameImpl (null);
 384
 385                         p.SetPositionImpl (99);
 386                         Assert.AreEqual (p.Position, 99, "#12");
 387                         Assert.AreEqual (p.MetadataToken, 0x8000000, "#13");
 388                         p.SetPositionImpl (0);
 389
 390                         Assert.IsFalse (p.IsIn, "#14");
 391                         p.SetAttrsImpl (ParameterAttributes.In);
 392                         Assert.IsTrue (p.IsIn, "#15");
 393                 }
 394
 395                 [Test]
 396                 public void SubClassWithOverrides()
 397                 {
 398                         var p2 = new MyParameterInfo2 ();
 399                         Assert.IsFalse (p2.IsIn, "#1");
 400                         p2.MyAttrsImpl = ParameterAttributes.In;
 401                         Assert.IsTrue (p2.IsIn, "#2");
 402 #if NET_4_5
 403                         Assert.AreEqual (p2.myList, p2.CustomAttributes, "#3");
 404 #endif
 405                 }
 406 #endif
 407         }
 408 }