tools/gn/parse_tree_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "testing/gtest/include/gtest/gtest.h"
   6 #include "tools/gn/input_file.h"
   7 #include "tools/gn/parse_tree.h"
   8 #include "tools/gn/scope.h"
   9 #include "tools/gn/test_with_scope.h"
  10
  11 TEST(ParseTree, Accessor) {
  12   TestWithScope setup;
  13
  14   // Make a pretend parse node with proper tracking that we can blame for the
  15   // given value.
  16   InputFile input_file(SourceFile("//foo"));
  17   Token base_token(Location(&input_file, 1, 1), Token::IDENTIFIER, "a");
  18   Token member_token(Location(&input_file, 1, 1), Token::IDENTIFIER, "b");
  19
  20   AccessorNode accessor;
  21   accessor.set_base(base_token);
  22
  23   scoped_ptr<IdentifierNode> member_identifier(
  24       new IdentifierNode(member_token));
  25   accessor.set_member(member_identifier.Pass());
  26
  27   // The access should fail because a is not defined.
  28   Err err;
  29   Value result = accessor.Execute(setup.scope(), &err);
  30   EXPECT_TRUE(err.has_error());
  31   EXPECT_EQ(Value::NONE, result.type());
  32
  33   // Define a as a Scope. It should still fail because b isn't defined.
  34   err = Err();
  35   setup.scope()->SetValue("a",
  36       Value(NULL, scoped_ptr<Scope>(new Scope(setup.scope()))), NULL);
  37   result = accessor.Execute(setup.scope(), &err);
  38   EXPECT_TRUE(err.has_error());
  39   EXPECT_EQ(Value::NONE, result.type());
  40
  41   // Define b, accessor should succeed now.
  42   const int64 kBValue = 42;
  43   err = Err();
  44   setup.scope()->GetMutableValue("a", false)->scope_value()->SetValue(
  45       "b", Value(NULL, kBValue), NULL);
  46   result = accessor.Execute(setup.scope(), &err);
  47   EXPECT_FALSE(err.has_error());
  48   ASSERT_EQ(Value::INTEGER, result.type());
  49   EXPECT_EQ(kBValue, result.int_value());
  50 }