base/location_unittest.cc

   1 // Copyright 2019 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/location.h"
   6
   7 #include "base/trace_event/base_tracing.h"
   8 #include "testing/gmock/include/gmock/gmock.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10
  11 #if BUILDFLAG(ENABLE_BASE_TRACING)
  12 #include "third_party/perfetto/include/perfetto/test/traced_value_test_support.h"  // no-presubmit-check
  13 #endif  // BUILDFLAG(ENABLE_BASE_TRACING)
  14
  15 namespace base {
  16
  17 namespace {
  18
  19 // This is a typical use: taking Location::Current as a default parameter.
  20 // So even though this looks contrived, it confirms that such usage works as
  21 // expected.
  22 Location WhereAmI(const Location& location = Location::Current()) {
  23   return location;
  24 }
  25
  26 }  // namespace
  27
  28 TEST(LocationTest, CurrentYieldsCorrectValue) {
  29   [[maybe_unused]] int previous_line = __LINE__;
  30   Location here = WhereAmI();
  31   EXPECT_NE(here.program_counter(), WhereAmI().program_counter());
  32   EXPECT_THAT(here.file_name(), ::testing::EndsWith("location_unittest.cc"));
  33   EXPECT_EQ(here.line_number(), previous_line + 1);
  34   EXPECT_STREQ("TestBody", here.function_name());
  35 }
  36
  37 #if BUILDFLAG(ENABLE_BASE_TRACING)
  38 TEST(LocationTest, TracingSupport) {
  39   EXPECT_EQ(perfetto::TracedValueToString(Location::CreateForTesting(
  40                 "func", "file", 42, WhereAmI().program_counter())),
  41             "{function_name:func,file_name:file,line_number:42}");
  42 }
  43 #endif  // BUILDFLAG(ENABLE_BASE_TRACING)
  44
  45 }  // namespace base