Index: chromeos/printing/ppd_cache_unittest.cc |
diff --git a/chromeos/printing/ppd_cache_unittest.cc b/chromeos/printing/ppd_cache_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..198f6f686a13048f199d52e3313b8d61a9b4b22d |
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+++ b/chromeos/printing/ppd_cache_unittest.cc |
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+// 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/bind.h" |
+#include "base/files/file_util.h" |
+#include "base/files/scoped_temp_dir.h" |
+#include "base/hash.h" |
+#include "base/logging.h" |
+#include "base/message_loop/message_loop.h" |
+#include "base/run_loop.h" |
+#include "base/single_thread_task_runner.h" |
+#include "base/threading/thread_task_runner_handle.h" |
+#include "chromeos/printing/ppd_cache.h" |
+#include "net/url_request/test_url_request_interceptor.h" |
+#include "net/url_request/url_request_test_util.h" |
+#include "testing/gtest/include/gtest/gtest.h" |
+ |
+namespace chromeos { |
+namespace printing { |
+namespace { |
+ |
+const char kTestManufacturer[] = "FooPrinters, Inc."; |
+const char kTestModel[] = "Laser BarMatic 1000"; |
+const char kTestUserUrl[] = "/some/path/to/some/ppd/file"; |
+const char kTestPpdContents[] = "This is the ppd for the first printer"; |
+// Output of 'gzip -9' on a file with contents 'ppd contents' |
+const char kTestGZippedPpdContents[] = { |
+ 0x1f, 0x8b, 0x08, 0x08, 0xe4, 0x2e, 0x00, 0x58, 0x02, 0x03, 0x70, |
+ 0x70, 0x64, 0x2e, 0x74, 0x78, 0x74, 0x00, 0x2b, 0x28, 0x48, 0x51, |
+ 0x48, 0xce, 0xcf, 0x2b, 0x49, 0xcd, 0x2b, 0x29, 0xe6, 0x02, 0x00, |
+ 0x2b, 0x51, 0x91, 0x24, 0x0d, 0x00, 0x00, 0x00}; |
+ |
+// Generate and return a PPDReference that has the fields set from the kTest |
+// constants above. |
+Printer::PpdReference TestReference() { |
+ Printer::PpdReference ret; |
+ ret.effective_manufacturer = kTestManufacturer; |
+ ret.effective_model = kTestModel; |
+ ret.user_supplied_ppd_url = kTestUserUrl; |
+ return ret; |
+} |
+ |
+// This fixture just points the cache at a temporary directory for the life of |
+// the test. |
+class PpdCacheTest : public ::testing::Test { |
+ public: |
+ void SetUp() override { |
+ ASSERT_TRUE(ppd_cache_temp_dir_.CreateUniqueTempDir()); |
+ } |
+ |
+ // Make and return a cache for the test that uses a temporary directory |
+ // which is cleaned up at the end of the test. |
+ std::unique_ptr<PpdCache> CreateTestCache() { |
+ return PpdCache::Create(ppd_cache_temp_dir_.GetPath()); |
+ } |
+ |
+ protected: |
+ // Overrider for DIR_CHROMEOS_PPD_CACHE that points it at a temporary |
+ // directory for the life of the test. |
+ base::ScopedTempDir ppd_cache_temp_dir_; |
+}; |
+ |
+// Check that path has a value, and the contents of the referenced file are |
+// |expected_contents|. |
+void CheckFileContentsAre(base::Optional<base::FilePath> result, |
+ const std::string& expected_contents) { |
+ // Make sure we have a value. |
+ ASSERT_TRUE(result); |
+ // Make sure we get the ppd back that we stored. |
+ std::string contents; |
+ ASSERT_TRUE(base::ReadFileToString(result.value(), &contents)); |
+ EXPECT_EQ(expected_contents, contents); |
+} |
+ |
+// Test that we miss on an empty cache. |
+TEST_F(PpdCacheTest, SimpleMiss) { |
+ auto cache = CreateTestCache(); |
+ EXPECT_FALSE(cache->Find(TestReference())); |
+} |
+ |
+// Test that when we store stuff, we get it back. |
+TEST_F(PpdCacheTest, MissThenHit) { |
+ auto cache = CreateTestCache(); |
+ auto ref = TestReference(); |
+ EXPECT_FALSE(cache->Find(ref)); |
+ |
+ // Store should give us a reference to the file. |
+ CheckFileContentsAre(cache->Store(ref, kTestPpdContents), kTestPpdContents); |
+ |
+ // We should also get it back in response to a Find. |
+ CheckFileContentsAre(cache->Find(ref), kTestPpdContents); |
+} |
+ |
+// Test that mutating any field in the reference causes us to miss in the cache |
+// when we change the highest priority resolve criteria. |
+TEST_F(PpdCacheTest, FieldChangeMeansCacheMiss) { |
+ auto cache = CreateTestCache(); |
+ auto ref = TestReference(); |
+ CheckFileContentsAre(cache->Store(ref, kTestPpdContents), kTestPpdContents); |
+ |
+ // We have a user url, so should still cache hit on manufacturer change. |
+ ref.effective_manufacturer = "Something else"; |
+ EXPECT_TRUE(cache->Find(ref)); |
+ ref = TestReference(); |
+ |
+ // We have a user url, so should still cache hit on model change. |
+ ref.effective_model = "Something else"; |
+ EXPECT_TRUE(cache->Find(ref)); |
+ ref = TestReference(); |
+ |
+ // But if we change th user url, that's a cache miss. |
+ ref.user_supplied_ppd_url = "Something else"; |
+ EXPECT_FALSE(cache->Find(ref)); |
+ ref = TestReference(); |
+ // Should still find the initial Store when ref *is* identical. |
+ CheckFileContentsAre(cache->Find(ref), kTestPpdContents); |
+ |
+ // Now store the reference with no test url. |
+ ref.user_supplied_ppd_url.clear(); |
+ CheckFileContentsAre(cache->Store(ref, kTestPpdContents), kTestPpdContents); |
+ |
+ // Now changing the model or manufacturer should cause a cache miss. |
+ ref.effective_manufacturer = "Something else"; |
+ EXPECT_FALSE(cache->Find(ref)); |
+ ref = TestReference(); |
+ ref.user_supplied_ppd_url.clear(); |
+ ref.effective_model = "Something else"; |
+ EXPECT_FALSE(cache->Find(ref)); |
+} |
+ |
+// Test that gzipped contents get stored as .ppd.gz, and non-gzipped |
+// contents get stored as .ppd |
+TEST_F(PpdCacheTest, StoredExtensions) { |
+ auto cache = CreateTestCache(); |
+ auto ref = TestReference(); |
+ |
+ // Not compressed, so should store as .ppd |
+ auto result = cache->Store(ref, kTestPpdContents); |
+ EXPECT_EQ(".ppd", cache->Store(ref, kTestPpdContents).value().Extension()); |
+ |
+ // Compressed, so should identify this and store as .ppd.gz |
+ std::string gzipped_contents(kTestGZippedPpdContents, |
+ sizeof(kTestGZippedPpdContents)); |
+ EXPECT_EQ(".ppd.gz", cache->Store(ref, gzipped_contents).value().Extension()); |
+} |
+ |
+} // namespace |
+} // namespace printing |
+} // namespace chromeos |