Create a new disk_cache type, SHADER_CACHE.

net/disk_cache/backend_unittest.cc

Index: net/disk_cache/backend_unittest.cc
diff --git a/net/disk_cache/backend_unittest.cc b/net/disk_cache/backend_unittest.cc
index 65cd3837aa842d7693fc1c850c4a8ce353a335dd..db33c8e6ae9d520f4a691e17b0cd90e1cf6e4fad 100644
--- a/net/disk_cache/backend_unittest.cc
+++ b/net/disk_cache/backend_unittest.cc
@@ -138,6 +138,11 @@ TEST_F(DiskCacheBackendTest, AppCacheBasics) {
   BackendBasics();
 }
 
+TEST_F(DiskCacheBackendTest, ShaderCacheBasics) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendBasics();
+}
+
 void DiskCacheBackendTest::BackendKeying() {
   InitCache();
   const char* kName1 = "the first key";
@@ -198,6 +203,11 @@ TEST_F(DiskCacheBackendTest, AppCacheKeying) {
   BackendKeying();
 }
 
+TEST_F(DiskCacheBackendTest, ShaderCacheKeying) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendKeying();
+}
+
 TEST_F(DiskCacheTest, CreateBackend) {
   net::TestCompletionCallback cb;
 
@@ -592,6 +602,14 @@ TEST_F(DiskCacheBackendTest, AppCacheLoad) {
   BackendLoad();
 }
 
+TEST_F(DiskCacheBackendTest, ShaderCacheLoad) {
+  SetCacheType(net::SHADER_CACHE);
+  // Work with a tiny index table (16 entries)
+  SetMask(0xf);
+  SetMaxSize(0x100000);
+  BackendLoad();
+}
+
 // Tests the chaining of an entry to the current head.
 void DiskCacheBackendTest::BackendChain() {
   SetMask(0x1);  // 2-entry table.
@@ -619,6 +637,11 @@ TEST_F(DiskCacheBackendTest, AppCacheChain) {
   BackendChain();
 }
 
+TEST_F(DiskCacheBackendTest, ShaderCacheChain) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendChain();
+}
+
 TEST_F(DiskCacheBackendTest, NewEvictionTrim) {
   SetNewEviction();
   SetDirectMode();
@@ -729,6 +752,12 @@ TEST_F(DiskCacheBackendTest, AppCacheInvalidEntry) {
   BackendInvalidEntry();
 }
 
+// We'll be leaking memory from this test.
+TEST_F(DiskCacheBackendTest, ShaderCacheInvalidEntry) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendInvalidEntry();
+}
+
 // Almost the same test, but this time crash the cache after reading an entry.
 // We'll be leaking memory from this test.
 void DiskCacheBackendTest::BackendInvalidEntryRead() {
@@ -780,6 +809,12 @@ TEST_F(DiskCacheBackendTest, AppCacheInvalidEntryRead) {
 }
 
 // We'll be leaking memory from this test.
+TEST_F(DiskCacheBackendTest, ShaderCacheInvalidEntryRead) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendInvalidEntryRead();
+}
+
+// We'll be leaking memory from this test.
 void DiskCacheBackendTest::BackendInvalidEntryWithLoad() {
   // Work with a tiny index table (16 entries)
   SetMask(0xf);
@@ -846,6 +881,12 @@ TEST_F(DiskCacheBackendTest, AppCacheInvalidEntryWithLoad) {
 }
 
 // We'll be leaking memory from this test.
+TEST_F(DiskCacheBackendTest, ShaderCacheInvalidEntryWithLoad) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendInvalidEntryWithLoad();
+}
+
+// We'll be leaking memory from this test.
 void DiskCacheBackendTest::BackendTrimInvalidEntry() {
   // Use the implementation directly... we need to simulate a crash.
   SetDirectMode();
@@ -1028,6 +1069,11 @@ TEST_F(DiskCacheBackendTest, MemoryOnlyEnumerations) {
   BackendEnumerations();
 }
 
+TEST_F(DiskCacheBackendTest, ShaderCacheEnumerations) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendEnumerations();
+}
+
 TEST_F(DiskCacheBackendTest, AppCacheEnumerations) {
   SetCacheType(net::APP_CACHE);
   BackendEnumerations();
@@ -1097,6 +1143,46 @@ TEST_F(DiskCacheBackendTest, AppCacheEnumerations2) {
   BackendEnumerations2();
 }
 
+TEST_F(DiskCacheBackendTest, ShaderCacheEnumerations2) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendEnumerations2();
+}
+
+// Verify that ReadData calls do not update the LRU cache
+// when using the SHADER_CACHE type.
+TEST_F(DiskCacheBackendTest, ShaderCacheEnumerationReadData) {
+  SetCacheType(net::SHADER_CACHE);
+  InitCache();
+  const std::string first("first");
+  const std::string second("second");
+  disk_cache::Entry *entry1, *entry2;
+  const int kSize = 50;
+  scoped_refptr<net::IOBuffer> buffer1(new net::IOBuffer(kSize));
+
+  ASSERT_EQ(net::OK, CreateEntry(first, &entry1));
+  memset(buffer1->data(), 0, kSize);
+  base::strlcpy(buffer1->data(), "And the data to save", kSize);
+  EXPECT_EQ(kSize, WriteData(entry1, 0, 0, buffer1, kSize, false));
+
+  ASSERT_EQ(net::OK, CreateEntry(second, &entry2));
+  entry2->Close();
+
+  FlushQueueForTest();
+
+  // Make sure that the timestamp is not the same.
+  AddDelay();
+
+  // Read from the last item in the LRU.
+  EXPECT_EQ(kSize, ReadData(entry1, 0, 0, buffer1, kSize));
+  entry1->Close();
+
+  void* iter = NULL;
+  ASSERT_EQ(net::OK, OpenNextEntry(&iter, &entry2));
+  EXPECT_EQ(entry2->GetKey(), second);
+  entry2->Close();
+  cache_->EndEnumeration(&iter);
+}
+
 // Verify handling of invalid entries while doing enumerations.
 // We'll be leaking memory from this test.
 void DiskCacheBackendTest::BackendInvalidEntryEnumeration() {
@@ -2325,6 +2411,11 @@ TEST_F(DiskCacheBackendTest, AppCacheOnlyDoomAll) {
   BackendDoomAll();
 }
 
+TEST_F(DiskCacheBackendTest, ShaderCacheOnlyDoomAll) {
+  SetCacheType(net::SHADER_CACHE);
+  BackendDoomAll();
+}
+
 // If the index size changes when we doom the cache, we should not crash.
 void DiskCacheBackendTest::BackendDoomAll2() {
   EXPECT_EQ(2, cache_->GetEntryCount());
@@ -2576,3 +2667,27 @@ TEST_F(DiskCacheBackendTest, UpdateRankForExternalCacheHit) {
   ASSERT_EQ(net::OK, OpenEntry("key0", &entry));
   entry->Close();
 }
+
+TEST_F(DiskCacheBackendTest, ShaderCacheUpdateRankForExternalCacheHit) {
+  SetCacheType(net::SHADER_CACHE);
+  SetDirectMode();
+  InitCache();
+
+  disk_cache::Entry* entry;
+
+  for (int i = 0; i < 2; ++i) {
+    std::string key = StringPrintf("key%d", i);
+    ASSERT_EQ(net::OK, CreateEntry(key, &entry));
+    entry->Close();
+  }
+
+  // Ping the oldest entry.
+  cache_->OnExternalCacheHit("key0");
+
+  TrimForTest(false);
+
+  // Make sure the older key remains.
+  EXPECT_EQ(1, cache_->GetEntryCount());
+  ASSERT_EQ(net::OK, OpenEntry("key0", &entry));
+  entry->Close();
+}