tools/gn/functions_target_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/scheduler.h"
   7 #include "tools/gn/scope.h"
   8 #include "tools/gn/test_with_scope.h"
   9
  10
  11 // Checks that we find unused identifiers in targets.
  12 TEST(FunctionsTarget, CheckUnused) {
  13   Scheduler scheduler;
  14   TestWithScope setup;
  15
  16   // The target generator needs a place to put the targets or it will fail.
  17   Scope::ItemVector item_collector;
  18   setup.scope()->set_item_collector(&item_collector);
  19
  20   // Test a good one first.
  21   TestParseInput good_input(
  22       "source_set(\"foo\") {\n"
  23       "}\n");
  24   ASSERT_FALSE(good_input.has_error());
  25   Err err;
  26   good_input.parsed()->Execute(setup.scope(), &err);
  27   ASSERT_FALSE(err.has_error()) << err.message();
  28
  29   // Test a source set (this covers everything but component) with an unused
  30   // variable.
  31   TestParseInput source_set_input(
  32       "source_set(\"foo\") {\n"
  33       "  unused = 5\n"
  34       "}\n");
  35   ASSERT_FALSE(source_set_input.has_error());
  36   err = Err();
  37   source_set_input.parsed()->Execute(setup.scope(), &err);
  38   ASSERT_TRUE(err.has_error());
  39
  40   // Test a component, which is a different code path.
  41   TestParseInput component_input(
  42       "component_mode = \"static_library\"\n"
  43       "component(\"bar\") {\n"
  44       "  unused = 5\n"
  45       "}\n");
  46   ASSERT_FALSE(component_input.has_error());
  47   err = Err();
  48   component_input.parsed()->Execute(setup.scope(), &err);
  49   ASSERT_TRUE(err.has_error()) << err.message();
  50 }