[mono/unit-tests] add callspec unit tests for different classs same prefix

Add a test that covers the case where a callspec method
descriptor has a class whose name is a prefix of the matched
class.

mono/unit-tests/callspec.cs

@@ -30,6 +30,18 @@ namespace Baz
         }
     }
 
+    class Foo2
+    {
+        public Foo2()
+        {
+        }
+
+        public string Bar(string greet)
+        {
+            return greet + ", World!!!";
+        }
+    }
+
     class MainClass
     {
         public static void Main(string[] args)
@@ -39,6 +51,8 @@ namespace Baz
             System.Console.WriteLine(foo.Bar("World"));
             var goo = new Goo();
             System.Console.WriteLine(goo.Bar("Hello"));
+            var foo2 = new Foo2();
+            System.Console.WriteLine(foo2.Bar("Hello"));
         }
     }
 }

mono/unit-tests/test-mono-callspec.c

@@ -22,6 +22,7 @@ enum test_method_enums {
 	FOO_BAR,
 	FOO_BARP,
 	GOO_BAR,
+	FOO2_BAR,
 	CONSOLE_WRITELINE,
 };
 
@@ -58,6 +59,7 @@ struct {
     {FOO_BAR, "M:Baz.Foo:Bar", TRUE},
     {FOO_BARP, "M:Baz.Foo:Bar", TRUE},
     {GOO_BAR, "M:Baz.Foo:Bar", FALSE},
+    {FOO2_BAR, "M:Baz.Foo:Bar", FALSE},
     {CONSOLE_WRITELINE, "M:Baz.Foo:Bar", FALSE},
     {FOO_BAR, "all,-M:Baz.Foo:Bar", FALSE},
     {CONSOLE_WRITELINE, "all,-M:Baz.Foo:Bar", TRUE},
@@ -66,6 +68,7 @@ struct {
     {FOO_BAR, "M::Bar", TRUE},
     {FOO_BARP, "M::Bar", TRUE},
     {GOO_BAR, "M::Bar", TRUE},
+    {FOO2_BAR, "M::Bar", TRUE},
 
     {0, NULL, FALSE}};
 
@@ -211,6 +214,20 @@ main (void)
 	}
 	g_array_append_val (test_methods, meth);
 
+	prog_klass = test_mono_class_from_name (prog_image, "Baz", "Foo2");
+	if (!prog_klass) {
+		res = 1;
+		printf ("FAILED FINDING Baz.Foo2\n");
+		goto out;
+	}
+	meth = mono_class_get_method_from_name (prog_klass, "Bar", 1);
+	if (!meth) {
+		res = 1;
+		printf ("FAILED FINDING Baz.Foo2:Bar (string)\n");
+		goto out;
+	}
+	g_array_append_val (test_methods, meth);
+
 	corlib = mono_get_corlib ();
 
 	console_klass = test_mono_class_from_name (corlib, "System", "Console");