C#: Add attribute tests for delegate types.

Author: michaelnebel

csharp/ql/test/library-tests/attributes/AttributeArguments.expected

@@ -76,6 +76,10 @@ arguments
 | attributes.cs:81:14:81:17 | [Args(...)] | 3 | attributes.cs:81:56:81:60 | (...) ... |
 | attributes.cs:81:14:81:17 | [Args(...)] | 4 | attributes.cs:81:63:81:66 | null |
 | attributes.cs:81:14:81:17 | [Args(...)] | 5 | attributes.cs:81:76:81:106 | array creation of type Object[] |
+| attributes.cs:96:2:96:13 | [My3(...)] | 0 | attributes.cs:96:15:96:15 | 1 |
+| attributes.cs:97:10:97:21 | [My3(...)] | 0 | attributes.cs:97:23:97:23 | 2 |
+| attributes.cs:100:10:100:21 | [My3(...)] | 0 | attributes.cs:100:23:100:23 | 3 |
+| attributes.cs:101:8:101:19 | [My3(...)] | 0 | attributes.cs:101:21:101:21 | 4 |
 constructorArguments
 | Assembly1.dll:0:0:0:0 | [Custom(...)] | 0 | Assembly1.dll:0:0:0:0 | 1 |
 | Assembly1.dll:0:0:0:0 | [Custom(...)] | 0 | Assembly1.dll:0:0:0:0 | 3 |
@@ -142,6 +146,10 @@ constructorArguments
 | attributes.cs:81:14:81:17 | [Args(...)] | 2 | attributes.cs:81:50:81:53 | null |
 | attributes.cs:81:14:81:17 | [Args(...)] | 3 | attributes.cs:81:56:81:60 | (...) ... |
 | attributes.cs:81:14:81:17 | [Args(...)] | 4 | attributes.cs:81:63:81:66 | null |
+| attributes.cs:96:2:96:13 | [My3(...)] | 0 | attributes.cs:96:15:96:15 | 1 |
+| attributes.cs:97:10:97:21 | [My3(...)] | 0 | attributes.cs:97:23:97:23 | 2 |
+| attributes.cs:100:10:100:21 | [My3(...)] | 0 | attributes.cs:100:23:100:23 | 3 |
+| attributes.cs:101:8:101:19 | [My3(...)] | 0 | attributes.cs:101:21:101:21 | 4 |
 namedArguments
 | Assembly1.dll:0:0:0:0 | [Custom(...)] | Prop2 | Assembly1.dll:0:0:0:0 | array creation of type Object[] |
 | Assembly1.dll:0:0:0:0 | [Custom(...)] | Prop2 | Assembly1.dll:0:0:0:0 | array creation of type Object[] |

csharp/ql/test/library-tests/attributes/AttributeElements.expected

@@ -18,6 +18,10 @@
 | attributes.cs:78:14:78:14 | X | attributes.cs:77:2:77:5 | [Args(...)] | ArgsAttribute |
 | attributes.cs:82:9:82:18 | SomeMethod | attributes.cs:80:6:80:9 | [Args(...)] | ArgsAttribute |
 | attributes.cs:82:9:82:18 | SomeMethod | attributes.cs:81:14:81:17 | [Args(...)] | ArgsAttribute |
+| attributes.cs:98:14:98:24 | Invoke | attributes.cs:97:10:97:21 | [My3(...)] | My3Attribute |
+| attributes.cs:98:14:98:24 | My1Delegate | attributes.cs:96:2:96:13 | [My3(...)] | My3Attribute |
+| attributes.cs:102:17:102:27 | Invoke | attributes.cs:100:10:100:21 | [My3(...)] | My3Attribute |
+| attributes.cs:102:17:102:27 | My2Delegate | attributes.cs:101:8:101:19 | [My3(...)] | My3Attribute |
 | attributes.dll:0:0:0:0 | attributes, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null | attributes.cs:10:12:10:24 | [AssemblyTitle(...)] | System.Reflection.AssemblyTitleAttribute |
 | attributes.dll:0:0:0:0 | attributes, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null | attributes.cs:11:12:11:30 | [AssemblyDescription(...)] | System.Reflection.AssemblyDescriptionAttribute |
 | attributes.dll:0:0:0:0 | attributes, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null | attributes.cs:12:12:12:32 | [AssemblyConfiguration(...)] | System.Reflection.AssemblyConfigurationAttribute |

csharp/ql/test/library-tests/attributes/PrintAst.expected

@@ -300,3 +300,27 @@ attributes.cs:
 #   88|         -1: [TypeMention] int
 #   88|         1: [IntLiteral] 13
 #   88|     4: [BlockStmt] {...}
+#   91| [Class] My3Attribute
+#-----|   3: (Base types)
+#   91|     0: [TypeMention] Attribute
+#   93|   4: [InstanceConstructor] My3Attribute
+#-----|     2: (Parameters)
+#   93|       0: [Parameter] x
+#   93|         -1: [TypeMention] int
+#   93|     4: [BlockStmt] {...}
+#   98| [DelegateType] My1Delegate
+#-----|   0: (Attributes)
+#   96|     1: [DefaultAttribute] [My3(...)]
+#   96|       -1: [TypeMention] My3Attribute
+#   96|       0: [IntLiteral] 1
+#-----|   2: (Parameters)
+#   98|     0: [Parameter] message
+#   98|       -1: [TypeMention] string
+#  102| [DelegateType] My2Delegate
+#-----|   0: (Attributes)
+#  101|     1: [DefaultAttribute] [My3(...)]
+#  101|       -1: [TypeMention] My3Attribute
+#  101|       0: [IntLiteral] 4
+#-----|   2: (Parameters)
+#  102|     0: [Parameter] message
+#  102|       -1: [TypeMention] string

csharp/ql/test/library-tests/attributes/attributes.cs

@@ -86,4 +86,17 @@ class My2Attribute : Attribute
 {
     public int X { get; set; }
     public My2Attribute(bool a, bool b, int i = 12, int j = 13) { }
-}
+}
+
+class My3Attribute : Attribute
+{
+    public My3Attribute(int x) { }
+}
+
+[My3Attribute(1)]
+[return: My3Attribute(2)]
+delegate int My1Delegate(string message);
+
+[return: My3Attribute(3)]
+[type: My3Attribute(4)]
+delegate string My2Delegate(string message);