base/component_export_unittest.cc

   1 // Copyright 2018 The Chromium Authors
   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 "base/component_export.h"
   6 #include "testing/gtest/include/gtest/gtest.h"
   7
   8 namespace base {
   9 namespace {
  10
  11 using ComponentExportTest = testing::Test;
  12
  13 #define IS_TEST_COMPONENT_A_IMPL 1
  14 #define IS_TEST_COMPONENT_B_IMPL
  15 #define IS_TEST_COMPONENT_C_IMPL 0
  16 #define IS_TEST_COMPONENT_D_IMPL 2
  17 #define IS_TEST_COMPONENT_E_IMPL xyz
  18
  19 TEST(ComponentExportTest, ImportExport) {
  20   // Defined as 1. Treat as export.
  21   EXPECT_EQ(1, INSIDE_COMPONENT_IMPL(TEST_COMPONENT_A));
  22
  23   // Defined, but empty. Treat as import.
  24   EXPECT_EQ(0, INSIDE_COMPONENT_IMPL(TEST_COMPONENT_B));
  25
  26   // Defined, but 0. Treat as import.
  27   EXPECT_EQ(0, INSIDE_COMPONENT_IMPL(TEST_COMPONENT_C));
  28
  29   // Defined, but some other arbitrary thing that isn't 1. Treat as import.
  30   EXPECT_EQ(0, INSIDE_COMPONENT_IMPL(TEST_COMPONENT_D));
  31   EXPECT_EQ(0, INSIDE_COMPONENT_IMPL(TEST_COMPONENT_E));
  32
  33   // Undefined. Treat as import.
  34   EXPECT_EQ(0, INSIDE_COMPONENT_IMPL(TEST_COMPONENT_F));
  35
  36   // And just for good measure, ensure that the macros evaluate properly in the
  37   // context of preprocessor #if blocks.
  38 #if INSIDE_COMPONENT_IMPL(TEST_COMPONENT_A)
  39   EXPECT_TRUE(true);
  40 #else
  41   EXPECT_TRUE(false);
  42 #endif
  43
  44 #if !INSIDE_COMPONENT_IMPL(TEST_COMPONENT_B)
  45   EXPECT_TRUE(true);
  46 #else
  47   EXPECT_TRUE(false);
  48 #endif
  49
  50 #if !INSIDE_COMPONENT_IMPL(TEST_COMPONENT_C)
  51   EXPECT_TRUE(true);
  52 #else
  53   EXPECT_TRUE(false);
  54 #endif
  55
  56 #if !INSIDE_COMPONENT_IMPL(TEST_COMPONENT_D)
  57   EXPECT_TRUE(true);
  58 #else
  59   EXPECT_TRUE(false);
  60 #endif
  61
  62 #if !INSIDE_COMPONENT_IMPL(TEST_COMPONENT_E)
  63   EXPECT_TRUE(true);
  64 #else
  65   EXPECT_TRUE(false);
  66 #endif
  67
  68 #if !INSIDE_COMPONENT_IMPL(TEST_COMPONENT_F)
  69   EXPECT_TRUE(true);
  70 #else
  71   EXPECT_TRUE(false);
  72 #endif
  73 }
  74
  75 #undef IS_TEST_COMPONENT_A_IMPL
  76 #undef IS_TEST_COMPONENT_B_IMPL
  77 #undef IS_TEST_COMPONENT_C_IMPL
  78 #undef IS_TEST_COMPONENT_D_IMPL
  79 #undef IS_TEST_COMPONENT_E_IMPL
  80
  81 }  // namespace
  82 }  // namespace base