Better breakpoint placement

runtime/vm/scanner_test.cc

 // Copyright (c) 2012, 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 "platform/assert.h"
 #include "vm/os.h"
 #include "vm/scanner.h"
 #include "vm/token.h"
 #include "vm/unit_test.h"
 
@@ skipping 399 matching lines @@
 void FindLineTest() {
   const char* source =
       "/*1*/   \n"
       "/*2*/   class A {\n"
       "/*3*/      void foo() { }\n"
       "/*4*/   }\n";
 
   Scanner scanner(String::Handle(String::New(source)),
                   String::Handle(String::New("")));
 
-  intptr_t token_index = scanner.TokenIndexAtLine(3);
-  EXPECT_EQ(3, token_index);
-  token_index = scanner.TokenIndexAtLine(100);
-  EXPECT(token_index < 0);
+  intptr_t first_token_index, last_token_index;
+  scanner.TokenRangeAtLine(3, &first_token_index, &last_token_index);
+  EXPECT_EQ(3, first_token_index);
+  EXPECT_EQ(8, last_token_index);
+  scanner.TokenRangeAtLine(100, &first_token_index, &last_token_index);
+  EXPECT(first_token_index < 0);
+  scanner.TokenRangeAtLine(1, &first_token_index, &last_token_index);
+  EXPECT_EQ(0, first_token_index);
+  EXPECT(last_token_index < 0);
 }
 
 
 TEST_CASE(Scanner_Test) {
   ScanLargeText();
 
   BoringTest();
   CommentTest();
   GreedIsGood();
   StringEscapes();
   InvalidStringEscapes();
   RawString();
   MultilineString();
   EmptyString();
   EmptyMultilineString();
   NumberLiteral();
   InvalidText();
   FindLineTest();
 }
 
 }  // namespace dart