1 files changed, 188 insertions, 0 deletions
diff --git a/startupcache/test/TestStartupCache.cpp b/startupcache/test/TestStartupCache.cpp
new file mode 100644
index 0000000000..9c817ff725
--- /dev/null
+++ b/startupcache/test/TestStartupCache.cpp
@@ -0,0 +1,188 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+
+#include "mozilla/scache/StartupCache.h"
+#include "mozilla/scache/StartupCacheUtils.h"
+
+#include "nsDirectoryServiceDefs.h"
+#include "nsIOutputStream.h"
+#include "nsISupports.h"
+#include "nsIStorageStream.h"
+#include "nsIObjectInputStream.h"
+#include "nsIObjectOutputStream.h"
+#include "nsIURI.h"
+#include "nsThreadUtils.h"
+#include "prenv.h"
+#include "prio.h"
+#include "prprf.h"
+#include "mozilla/gtest/MozAssertions.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/Printf.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/UniquePtrExtensions.h"
+#include "nsNetCID.h"
+#include "nsIURIMutator.h"
+
+using namespace JS;
+
+using namespace mozilla::scache;
+using mozilla::UniquePtr;
+
+void WaitForStartupTimer() {
+  StartupCache* sc = StartupCache::GetSingleton();
+  PR_Sleep(3 * PR_TicksPerSecond());
+
+  while (true) {
+    NS_ProcessPendingEvents(nullptr);
+    if (sc->StartupWriteComplete()) {
+      return;
+    }
+    PR_Sleep(1 * PR_TicksPerSecond());
+  }
+}
+
+class TestStartupCache : public ::testing::Test {
+ protected:
+  TestStartupCache();
+  ~TestStartupCache();
+
+  nsCOMPtr<nsIFile> mSCFile;
+};
+
+TestStartupCache::TestStartupCache() {
+  NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(mSCFile));
+  mSCFile->AppendNative("test-startupcache.tmp"_ns);
+#ifdef XP_WIN
+  nsAutoString env(u"MOZ_STARTUP_CACHE="_ns);
+  env.Append(mSCFile->NativePath());
+  _wputenv(env.get());
+#else
+  nsAutoCString path;
+  mSCFile->GetNativePath(path);
+  char* env = mozilla::Smprintf("MOZ_STARTUP_CACHE=%s", path.get()).release();
+  PR_SetEnv(env);
+  // We intentionally leak `env` here because it is required by PR_SetEnv
+  MOZ_LSAN_INTENTIONALLY_LEAK_OBJECT(env);
+#endif
+  StartupCache::GetSingleton()->InvalidateCache();
+}
+TestStartupCache::~TestStartupCache() {
+  PR_SetEnv("MOZ_STARTUP_CACHE=");
+  StartupCache::GetSingleton()->InvalidateCache();
+}
+
+TEST_F(TestStartupCache, StartupWriteRead) {
+  nsresult rv;
+  StartupCache* sc = StartupCache::GetSingleton();
+
+  const char* buf = "Market opportunities for BeardBook";
+  const char* id = "id";
+  const char* outbuf;
+  uint32_t len;
+
+  rv = sc->PutBuffer(id, mozilla::UniqueFreePtr<char[]>(strdup(buf)),
+                     strlen(buf) + 1);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  rv = sc->GetBuffer(id, &outbuf, &len);
+  EXPECT_NS_SUCCEEDED(rv);
+  EXPECT_STREQ(buf, outbuf);
+
+  rv = sc->ResetStartupWriteTimerAndLock();
+  EXPECT_NS_SUCCEEDED(rv);
+  WaitForStartupTimer();
+
+  rv = sc->GetBuffer(id, &outbuf, &len);
+  EXPECT_NS_SUCCEEDED(rv);
+  EXPECT_STREQ(buf, outbuf);
+}
+
+TEST_F(TestStartupCache, WriteInvalidateRead) {
+  nsresult rv;
+  const char* buf = "BeardBook competitive analysis";
+  const char* id = "id";
+  const char* outbuf;
+  uint32_t len;
+  StartupCache* sc = StartupCache::GetSingleton();
+  ASSERT_TRUE(sc);
+
+  rv = sc->PutBuffer(id, mozilla::UniqueFreePtr<char[]>(strdup(buf)),
+                     strlen(buf) + 1);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  sc->InvalidateCache();
+
+  rv = sc->GetBuffer(id, &outbuf, &len);
+  EXPECT_EQ(rv, NS_ERROR_NOT_AVAILABLE);
+}
+
+TEST_F(TestStartupCache, WriteObject) {
+  nsresult rv;
+
+  nsCOMPtr<nsIURI> obj;
+
+  constexpr auto spec = "http://www.mozilla.org"_ns;
+  rv = NS_MutateURI(NS_SIMPLEURIMUTATOR_CONTRACTID).SetSpec(spec).Finalize(obj);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  StartupCache* sc = StartupCache::GetSingleton();
+
+  // Create an object stream. Usually this is done with
+  // NewObjectOutputWrappedStorageStream, but that uses
+  // StartupCache::GetSingleton in debug builds, and we
+  // don't have access to that here. Obviously.
+  const char* id = "id";
+  nsCOMPtr<nsIStorageStream> storageStream =
+      do_CreateInstance("@mozilla.org/storagestream;1");
+  ASSERT_TRUE(storageStream);
+
+  rv = storageStream->Init(256, (uint32_t)-1);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  nsCOMPtr<nsIObjectOutputStream> objectOutput =
+      do_CreateInstance("@mozilla.org/binaryoutputstream;1");
+  ASSERT_TRUE(objectOutput);
+
+  nsCOMPtr<nsIOutputStream> outputStream = do_QueryInterface(storageStream);
+
+  rv = objectOutput->SetOutputStream(outputStream);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  nsCOMPtr<nsISupports> objQI(do_QueryInterface(obj));
+  rv = objectOutput->WriteObject(objQI, true);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  mozilla::UniqueFreePtr<char[]> buf;
+  uint32_t len;
+  NewBufferFromStorageStream(storageStream, &buf, &len);
+
+  // Since this is a post-startup write, it should be written and
+  // available.
+  rv = sc->PutBuffer(id, std::move(buf), len);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  const char* buf2;
+  uint32_t len2;
+  nsCOMPtr<nsIObjectInputStream> objectInput;
+  rv = sc->GetBuffer(id, &buf2, &len2);
+  EXPECT_NS_SUCCEEDED(rv);
+
+  rv = NewObjectInputStreamFromBuffer(buf2, len2, getter_AddRefs(objectInput));
+  EXPECT_NS_SUCCEEDED(rv);
+
+  nsCOMPtr<nsISupports> deserialized;
+  rv = objectInput->ReadObject(true, getter_AddRefs(deserialized));
+  EXPECT_NS_SUCCEEDED(rv);
+
+  nsCOMPtr<nsIURI> uri(do_QueryInterface(deserialized));
+  ASSERT_TRUE(uri);
+
+  nsCString outSpec;
+  rv = uri->GetSpec(outSpec);
+  EXPECT_NS_SUCCEEDED(rv);
+  ASSERT_TRUE(outSpec.Equals(spec));
+}