Implement API for accessing fonts installed locally on the system.

content/browser/font_access/font_access_service_unittest.cc

Index: content/browser/font_access/font_access_service_unittest.cc
diff --git a/content/browser/font_access/font_access_service_unittest.cc b/content/browser/font_access/font_access_service_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0a38804613db84557f6b6e1b078fe03ccd2789cb
--- /dev/null
+++ b/content/browser/font_access/font_access_service_unittest.cc
@@ -0,0 +1,294 @@
+// Copyright 2016 The Chromium 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 "base/run_loop.h"
+#include "content/browser/font_access/font_access_service_impl.h"
+#include "content/browser/font_access/font_getter.h"
+#include "content/common/font_access/font_access_service.mojom.h"
+#include "content/public/test/mock_render_process_host.h"
+#include "content/public/test/test_browser_context.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "mojo/public/cpp/bindings/interface_ptr.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/system/buffer.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+class CacheClobberCounter {
+ public:
+  CacheClobberCounter() : counter(0) {}
+
+  void SetCacheMap(const FontCacheMap& cache_map) { cache_map_ = cache_map; }
+
+  scoped_ptr<FontCacheMap> GetFakeCacheMap() {
+    scoped_ptr<FontCacheMap> clone_map(new FontCacheMap(cache_map_));
+    counter++;
+    return clone_map;
+  }
+
+  int counter;
+  FontCacheMap cache_map_;
+};
+
+class FontAccessServiceTest : public testing::Test {
+ public:
+  FontAccessServiceTest()
+      : context_(new TestBrowserContext()),
+        host_(new MockRenderProcessHost(context_.get())),
+        counter_(new CacheClobberCounter()) {}
+
+  void SetUp() override {
+    // Create a dummy mojo channel so that the FontAccessServiceImpl can be
+    // instantiated
+    mojo::InterfaceRequest<FontAccessService> request =
+        mojo::GetProxy(&interface_ptr_);
+    // Create a new FontAccessServiceImpl bound to the dummy channel.
+    service_impl_.reset(new FontAccessServiceImpl(
+        base::Bind(&CacheClobberCounter::GetFakeCacheMap,
+                   base::Unretained(counter_.get())),
+        std::move(request)));
+    base::RunLoop().RunUntilIdle();
+  }
+
+  void SetCacheMap(const FontCacheMap& cache_map) {
+    counter_->SetCacheMap(cache_map);
+  }
+
+  static void VerifyFontListCallback(
+      const FontCacheMap& real_map,
+      size_t expected_fonts,
+      base::Closure quit,
+      const mojo::Array<FontDescriptionPtr>& values) {
+    EXPECT_EQ(expected_fonts, values.size());
+    // Verify that all of the fonts were there.
+    for (size_t i = 0; i < values.size(); i++) {
+      FontCacheMap::const_iterator iter;
+      iter = real_map.find(values[i]->family);
+      EXPECT_NE(iter, real_map.end());
+      FontStyleMap::const_iterator faceIter;
+      faceIter = iter->second.find(values[i]->style);
+      EXPECT_NE(faceIter, iter->second.end());
+    }
+
+    quit.Run();
+  }
+
+  static void VerifyFontBlobCallback(int64_t expected_length,
+                                     base::Closure quit,
+                                     mojo::ScopedSharedBufferHandle buffer,
+                                     int64_t length) {
+    quit.Run();
+    EXPECT_EQ(length, expected_length);
+  }
+
+  mojo::InterfacePtr<FontAccessService> interface_ptr_;
+  content::TestBrowserThreadBundle thread_bundle_;
+  scoped_ptr<TestBrowserContext> context_;
+  scoped_ptr<MockRenderProcessHost> host_;
+  scoped_ptr<FontAccessServiceImpl> service_impl_;
+  scoped_ptr<CacheClobberCounter> counter_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(FontAccessServiceTest);
+};
+
+TEST_F(FontAccessServiceTest, GetFonts) {
+  FontCacheMap fonts;
+  FontStyleMap face_map;
+  face_map.insert(
+      std::make_pair("Style1", FontInformation("Path", "FullName")));
+  fonts.insert(std::make_pair("Font", face_map));
+  SetCacheMap(fonts);
+
+  base::RunLoop run_loop;
+  service_impl_->GetFontList(
+      base::Bind(&FontAccessServiceTest::VerifyFontListCallback, fonts, 1,
+                 run_loop.QuitClosure()));
+  run_loop.Run();
+  EXPECT_EQ(1, counter_->counter);
+}
+
+TEST_F(FontAccessServiceTest, GetFontsRecaches) {
+  FontCacheMap fonts;
+  FontStyleMap face_map;
+  face_map.insert(
+      std::make_pair("Style1", FontInformation("Path", "FullName")));
+  fonts.insert(std::make_pair("Font", face_map));
+  SetCacheMap(fonts);
+
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontList(
+        base::Bind(&FontAccessServiceTest::VerifyFontListCallback, fonts, 1,
+                   run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+
+  fonts.insert(std::make_pair("Font2", face_map));
+  SetCacheMap(fonts);
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontList(
+        base::Bind(&FontAccessServiceTest::VerifyFontListCallback, fonts, 2,
+                   run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+
+  EXPECT_EQ(2, counter_->counter);
+}
+
+TEST_F(FontAccessServiceTest, GetFontBlob) {
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  base::FilePath file_path = temp_dir.path().AppendASCII("test_file.ttf");
+  base::File file(file_path, base::File::FLAG_CREATE | base::File::FLAG_READ |
+                                 base::File::FLAG_WRITE);
+  ASSERT_TRUE(file.IsValid());
+
+  char data_to_write[] = "test";
+  const int kTestDataSize = 4;
+  int bytes_written = file.Write(0, data_to_write, kTestDataSize);
+  EXPECT_EQ(kTestDataSize, bytes_written);
+
+  FontCacheMap fonts;
+  FontStyleMap face_map;
+  face_map.insert(std::make_pair(
+      "Style1", FontInformation(file_path.AsUTF8Unsafe(), "FullName")));
+  fonts.insert(std::make_pair("Font", face_map));
+  SetCacheMap(fonts);
+
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontData(
+        "Font", "Style1",
+        base::Bind(&FontAccessServiceTest::VerifyFontBlobCallback,
+                   kTestDataSize, run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+
+  EXPECT_EQ(1, counter_->counter);
+}
+
+TEST_F(FontAccessServiceTest, GetFontBlobIsCached) {
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  base::FilePath file_path = temp_dir.path().AppendASCII("test_file.ttf");
+  base::File file(file_path, base::File::FLAG_CREATE | base::File::FLAG_READ |
+                                 base::File::FLAG_WRITE);
+  ASSERT_TRUE(file.IsValid());
+
+  char data_to_write[] = "test";
+  const int kTestDataSize = 4;
+  int bytes_written = file.Write(0, data_to_write, kTestDataSize);
+  EXPECT_EQ(kTestDataSize, bytes_written);
+
+  FontCacheMap fonts;
+  FontStyleMap face_map;
+  face_map.insert(std::make_pair(
+      "Style1", FontInformation(file_path.AsUTF8Unsafe(), "FullName")));
+  fonts.insert(std::make_pair("Font", face_map));
+  SetCacheMap(fonts);
+
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontData(
+        "Font", "Style1",
+        base::Bind(&FontAccessServiceTest::VerifyFontBlobCallback,
+                   kTestDataSize, run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontData(
+        "Font", "Style1",
+        base::Bind(&FontAccessServiceTest::VerifyFontBlobCallback,
+                   kTestDataSize, run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+
+  EXPECT_EQ(1, counter_->counter);
+}
+
+TEST_F(FontAccessServiceTest, GetFontBlobRecachesOnMiss) {
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  base::FilePath file_path = temp_dir.path().AppendASCII("test_file.ttf");
+  base::File file(file_path, base::File::FLAG_CREATE | base::File::FLAG_READ |
+                                 base::File::FLAG_WRITE);
+  ASSERT_TRUE(file.IsValid());
+
+  char data_to_write[] = "test";
+  const int kTestDataSize = 4;
+  int bytes_written = file.Write(0, data_to_write, kTestDataSize);
+  EXPECT_EQ(kTestDataSize, bytes_written);
+
+  FontCacheMap fonts;
+  FontStyleMap face_map;
+  face_map.insert(std::make_pair(
+      "Style1", FontInformation(file_path.AsUTF8Unsafe(), "FullName")));
+  fonts.insert(std::make_pair("Font", face_map));
+  SetCacheMap(fonts);
+
+  // Populates the cache and returns the first font.
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontData(
+        "Font", "Style1",
+        base::Bind(&FontAccessServiceTest::VerifyFontBlobCallback,
+                   kTestDataSize, run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+
+  // Expected cache miss and a second miss after recaching.
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontData(
+        "Font2", "Style1",
+        base::Bind(&FontAccessServiceTest::VerifyFontBlobCallback, 0,
+                   run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+  EXPECT_EQ(2, counter_->counter);
+
+  fonts.insert(std::make_pair("Font2", face_map));
+  SetCacheMap(fonts);
+
+  // Expected cache miss with eventual result on recache.
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontData(
+        "Font2", "Style1",
+        base::Bind(&FontAccessServiceTest::VerifyFontBlobCallback,
+                   kTestDataSize, run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+
+  EXPECT_EQ(3, counter_->counter);
+}
+
+TEST_F(FontAccessServiceTest, FontBlobPathIsInvalid) {
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+  base::FilePath file_path = temp_dir.path().AppendASCII("test_file.ttf");
+
+  FontCacheMap fonts;
+  FontStyleMap face_map;
+  face_map.insert(std::make_pair(
+      "Style1", FontInformation(file_path.AsUTF8Unsafe(), "FullName")));
+  fonts.insert(std::make_pair("Font", face_map));
+  SetCacheMap(fonts);
+
+  {
+    base::RunLoop run_loop;
+    service_impl_->GetFontData(
+        "Font", "Style1",
+        base::Bind(&FontAccessServiceTest::VerifyFontBlobCallback, 0,
+                   run_loop.QuitClosure()));
+    run_loop.Run();
+  }
+
+  EXPECT_EQ(1, counter_->counter);
+}
+}