tools/gn/scope_unittest.cc

   1 // Copyright (c) 2013 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(Scope, NonRecursiveMergeTo) {
  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 assignment_token(Location(&input_file, 1, 1), Token::STRING,
  18       "\"hello\"");
  19   LiteralNode assignment;
  20   assignment.set_value(assignment_token);
  21
  22   Value old_value(&assignment, "hello");
  23   setup.scope()->SetValue("v", old_value, &assignment);
  24
  25   // Detect collisions of values' values.
  26   {
  27     Scope new_scope(setup.settings());
  28     Value new_value(&assignment, "goodbye");
  29     new_scope.SetValue("v", new_value, &assignment);
  30
  31     Err err;
  32     EXPECT_FALSE(new_scope.NonRecursiveMergeTo(
  33         setup.scope(), &assignment, "error", &err));
  34     EXPECT_TRUE(err.has_error());
  35   }
  36
  37   // Don't flag values that technically collide but have the same value.
  38   {
  39     Scope new_scope(setup.settings());
  40     Value new_value(&assignment, "hello");
  41     new_scope.SetValue("v", new_value, &assignment);
  42
  43     Err err;
  44     EXPECT_TRUE(new_scope.NonRecursiveMergeTo(
  45         setup.scope(), &assignment, "error", &err));
  46     EXPECT_FALSE(err.has_error());
  47   }
  48 }