Add API Key parsing for experimental APIs

content/common/experiments/api_key_unittest.cc

+// Copyright 2015 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 "content/common/experiments/api_key.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "base/test/simple_test_clock.h"
+#include "base/time/time.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+namespace {
+
+const char* kSampleAPIKey =
+    "Signature|https://valid.example.com|Frobulate|1458766277";
+
+const char* kExpectedAPIKeySignature = "Signature";
+const char* kExpectedAPIKeyData =
+    "https://valid.example.com|Frobulate|1458766277";
+const char* kExpectedAPIName = "Frobulate";
+const char* kExpectedOrigin = "https://valid.example.com";
+const uint64_t kExpectedExpiry = 1458766277;
+
+// The key should not be valid for this origin, or for this API.
+const char* kInvalidOrigin = "https://invalid.example.com";
+const char* kInvalidAPIName = "Grokalyze";
+
+// The key should be valid if the current time is kValidTimestamp or earlier.
+double kValidTimestamp = 1458766276.0;
+
+// The key should be invalid if the current time is kInvalidTimestamp or later.
+double kInvalidTimestamp = 1458766278.0;
+
+// Various ill-formed API keys. These should all fail to parse.
+const char* kInvalidAPIKeys[] = {
+    // Invalid - only one part
+    "abcde",
+    // Not enough parts
+    "https://valid.example.com|APIName|1458766277",
+    // Delimiter in API Name
+    "Signature|https://valid.example.com|API|Name|1458766277",
+    // Extra string field
+    "Signature|https://valid.example.com|APIName|1458766277|SomethingElse",
+    // Extra numeric field
+    "Signature|https://valid.example.com|APIName|1458766277|1458766277",
+    // Non-numeric expiry timestamp
+    "Signature|https://valid.example.com|APIName|abcdefghij",
+    // Non-numeric expiry timestamp
+    "Signature|https://valid.example.com|APIName|1458766277x",
+    // Negative expiry timestamp
+    "Signature|https://valid.example.com|APIName|-1458766277"};
+const size_t kNumInvalidAPIKeys = sizeof(kInvalidAPIKeys) / sizeof(const char*);

[Marijn Kruisselbrink, 2016/01/05 00:59:14]

you probably want to use arraysize (from base/macros.h) here

[iclelland, 2016/01/05 20:26:31]

I saw other instances in the codebase, but didn't know about the macro -- thanks
for the pointer! Done.

+
+}  // namespace
+
+class ApiKeyTest : public testing::Test {
+ protected:
+  bool ValidateOrigin(ApiKey* api_key, const char* origin) {
+    return api_key->ValidateOrigin(std::string(origin));
+  }
+
+  bool ValidateApiName(ApiKey* api_key, const char* api_name) {
+    return api_key->ValidateApiName(std::string(api_name));
+  }
+
+  bool ValidateDate(ApiKey* api_key, const base::Time& now) {
+    return api_key->ValidateDate(now);
+  }
+};
+
+TEST_F(ApiKeyTest, ParseNullString) {
+  scoped_ptr<ApiKey> empty_key = ApiKey::Parse(std::string());
+  EXPECT_FALSE(empty_key);
+}
+
+TEST_F(ApiKeyTest, ParseEmptyString) {
+  scoped_ptr<ApiKey> empty_key = ApiKey::Parse("");
+  EXPECT_FALSE(empty_key);
+}
+
+TEST_F(ApiKeyTest, ParseInvalidStrings) {
+  for (size_t i = 0; i < kNumInvalidAPIKeys; ++i) {
+    scoped_ptr<ApiKey> empty_key = ApiKey::Parse(kInvalidAPIKeys[i]);
+    EXPECT_FALSE(empty_key) << "Invalid API Key should not parse: "
+                            << kInvalidAPIKeys[i];
+  }
+}
+
+TEST_F(ApiKeyTest, ParseValidKeyString) {
+  scoped_ptr<ApiKey> key = ApiKey::Parse(kSampleAPIKey);
+  ASSERT_TRUE(key);
+  EXPECT_EQ(kExpectedAPIName, key->api_name());
+  EXPECT_EQ(kExpectedAPIKeySignature, key->signature());
+  EXPECT_EQ(kExpectedAPIKeyData, key->data());
+  EXPECT_EQ(GURL(kExpectedOrigin), key->origin());
+  EXPECT_EQ(kExpectedExpiry, key->expiry_timestamp());
+}
+
+TEST_F(ApiKeyTest, ValidateValidKey) {
+  scoped_ptr<ApiKey> key = ApiKey::Parse(kSampleAPIKey);
+  ASSERT_TRUE(key);
+  EXPECT_TRUE(ValidateOrigin(key.get(), kExpectedOrigin));
+  EXPECT_FALSE(ValidateOrigin(key.get(), kInvalidOrigin));
+  EXPECT_TRUE(ValidateApiName(key.get(), kExpectedAPIName));
+  EXPECT_FALSE(ValidateApiName(key.get(), kInvalidAPIName));
+  EXPECT_TRUE(
+      ValidateDate(key.get(), base::Time::FromDoubleT(kValidTimestamp)));
+  EXPECT_FALSE(
+      ValidateDate(key.get(), base::Time::FromDoubleT(kInvalidTimestamp)));
+}
+
+}  // namespace content