base_unittests.cc

Go to the documentation of this file.

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "flutter/testing/testing.h"
#include "impeller/base/strings.h"
#include "impeller/base/thread.h"
 
namespace impeller {
namespace testing {
 
struct Foo {
  Mutex mtx;
  int a IPLR_GUARDED_BY(mtx);
};
 
struct RWFoo {
  RWMutex mtx;
  int a IPLR_GUARDED_BY(mtx);
};
 
TEST(ThreadTest, CanCreateMutex) {
  Foo f = {};
 
  // f.a = 100; <--- Static analysis error.
  f.mtx.Lock();
  f.a = 100;
  f.mtx.Unlock();
}
 
TEST(ThreadTest, CanCreateMutexLock) {
  Foo f = {};
 
  // f.a = 100; <--- Static analysis error.
  auto a = Lock(f.mtx);
  f.a = 100;
}
 
TEST(ThreadTest, CanCreateRWMutex) {
  RWFoo f = {};
 
  // f.a = 100; <--- Static analysis error.
  f.mtx.LockWriter();
  f.a = 100;
  f.mtx.UnlockWriter();
  // int b = f.a; <--- Static analysis error.
  f.mtx.LockReader();
  int b = f.a;  // NOLINT(clang-analyzer-deadcode.DeadStores)
  FML_ALLOW_UNUSED_LOCAL(b);
  f.mtx.UnlockReader();
}
 
TEST(ThreadTest, CanCreateRWMutexLock) {
  RWFoo f = {};
 
  // f.a = 100; <--- Static analysis error.
  {
    auto write_lock = WriterLock{f.mtx};
    f.a = 100;
  }
 
  // int b = f.a; <--- Static analysis error.
  {
    auto read_lock = ReaderLock(f.mtx);
    int b = f.a;  // NOLINT(clang-analyzer-deadcode.DeadStores)
    FML_ALLOW_UNUSED_LOCAL(b);
  }
 
  // f.mtx.UnlockReader(); <--- Static analysis error.
}
 
TEST(StringsTest, CanSPrintF) {
  ASSERT_EQ(SPrintF("%sx%d", "Hello", 12), "Hellox12");
  ASSERT_EQ(SPrintF(""), "");
  ASSERT_EQ(SPrintF("Hello"), "Hello");
  ASSERT_EQ(SPrintF("%sx%.2f", "Hello", 12.122222), "Hellox12.12");
}
 
}  // namespace testing
}  // namespace impeller