Canonicalize TypeArguments.

runtime/vm/object_test.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
@@ skipping 93 matching lines @@
 
   const Array& array = Array::Handle(cls.functions_cache());
   array.SetAt(0, function_name);
   cls.set_functions_cache(array);
   String& test_name = String::Handle();
   test_name ^= Array::Handle(cls.functions_cache()).At(0);
   EXPECT(test_name.Equals(function_name));
 }
 
 
+TEST_CASE(TypeArguments) {
+  const Type& type1 = Type::Handle(Type::DoubleInterface());
+  const Type& type2 = Type::Handle(Type::StringInterface());
+  const TypeArguments& type_arguments1 = TypeArguments::Handle(
+    TypeArguments::New(2));
+  type_arguments1.SetTypeAt(0, type1);
+  type_arguments1.SetTypeAt(1, type2);
+  const TypeArguments& type_arguments2 = TypeArguments::Handle(
+    TypeArguments::New(2));
+  type_arguments2.SetTypeAt(0, type1);
+  type_arguments2.SetTypeAt(1, type2);
+  EXPECT_NE(type_arguments1.raw(), type_arguments2.raw());
+  OS::Print("1: %s\n", type_arguments1.ToCString());
+  OS::Print("2: %s\n", type_arguments2.ToCString());
+  ASSERT(type_arguments1.Equals(type_arguments2));
+  TypeArguments& type_arguments3 = TypeArguments::Handle();
+  type_arguments1.Canonicalize();
+  type_arguments3 ^= type_arguments2.Canonicalize();
+  EXPECT_EQ(type_arguments1.raw(), type_arguments3.raw());
+}
+
+
 TEST_CASE(TokenStream) {
   String& source = String::Handle(String::New("= ( 9 , ."));
   String& private_key = String::Handle(String::New(""));
   Scanner scanner(source, private_key);
   const Scanner::GrowableTokenStream& ts = scanner.GetStream();
   EXPECT_EQ(6, ts.length());
   EXPECT_EQ(Token::kLPAREN, ts[1].kind);
   const TokenStream& token_stream = TokenStream::Handle(TokenStream::New(ts));
   EXPECT_EQ(6, token_stream.Length());
   EXPECT_EQ(Token::kLPAREN, token_stream.KindAt(1));
@@ skipping 2109 matching lines @@
     cls = iterator.GetNextClass();
     ASSERT((cls.raw() == ae66.raw()) || (cls.raw() == re44.raw()));
     count++;
   }
   ASSERT(count == 2);
 }
 
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart