[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/test/ecdh_unittest.cc

 // Copyright 2014 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/stl_util.h"
 #include "content/child/webcrypto/algorithm_dispatch.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/jwk.h"
 #include "content/child/webcrypto/status.h"
 #include "content/child/webcrypto/test/test_helpers.h"
@@ skipping 298 matching lines @@
   ASSERT_EQ(blink::WebCryptoAlgorithmIdAesGcm, derived_key.algorithm().id());
   ASSERT_EQ(128, derived_key.algorithm().aesParams()->lengthBits());
 
   // Export the key and verify its contents.
   std::vector<uint8_t> raw_key;
   EXPECT_EQ(Status::Success(),
             ExportKey(blink::WebCryptoKeyFormatRaw, derived_key, &raw_key));
   EXPECT_EQ(16u, raw_key.size());
 }
 
+TEST(WebCryptoEcdhTest, ImportKeyEmptyUsage) {
+  if (!SupportsEcdh())
+    return;
+
+  blink::WebCryptoKey key;
+
+  scoped_ptr<base::ListValue> tests;
+  ASSERT_TRUE(ReadJsonTestFileToList("ecdh.json", &tests));
+
+  const base::DictionaryValue* test;
+  ASSERT_TRUE(tests->GetDictionary(0, &test));
+
+  // Import the public key.
+  const base::DictionaryValue* public_key_json = NULL;
+  EXPECT_TRUE(test->GetDictionary("public_key", &public_key_json));
+  blink::WebCryptoNamedCurve curve =
+      GetCurveNameFromDictionary(public_key_json, "crv");
+  ASSERT_EQ(Status::Success(),
+            ImportKey(blink::WebCryptoKeyFormatJwk,
+                      CryptoData(MakeJsonVector(*public_key_json)),
+                      CreateEcdhImportAlgorithm(curve), true, 0, &key));
+  EXPECT_EQ(0, key.usages());
+
+  // Import the private key.
+  const base::DictionaryValue* private_key_json = NULL;
+  EXPECT_TRUE(test->GetDictionary("private_key", &private_key_json));
+  curve = GetCurveNameFromDictionary(private_key_json, "crv");
+  ASSERT_EQ(Status::ErrorCreateKeyEmptyUsages(),
+            ImportKey(blink::WebCryptoKeyFormatJwk,
+                      CryptoData(MakeJsonVector(*private_key_json)),
+                      CreateEcdhImportAlgorithm(curve), true,
+                      0, &key));
+}
+
 }  // namespace
 
 }  // namespace webcrypto
 
 }  // namespace content