[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/test/hmac_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/logging.h"
 #include "base/stl_util.h"
 #include "content/child/webcrypto/algorithm_dispatch.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/status.h"
 #include "content/child/webcrypto/test/test_helpers.h"
@@ skipping 407 matching lines @@
 
   // HMAC SHA-384
   ImportExportJwkSymmetricKey(
       384, CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha384),
       blink::WebCryptoKeyUsageSign, "HS384");
 
   // HMAC SHA-512
   ImportExportJwkSymmetricKey(
       512, CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha512),
       blink::WebCryptoKeyUsageVerify, "HS512");
-
-  // Zero usage value
-  ImportExportJwkSymmetricKey(
-      512, CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha512), 0,
-      "HS512");
 }
 
 TEST(WebCryptoHmacTest, ExportJwkEmptyKey) {
   const blink::WebCryptoAlgorithm import_algorithm =
       CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1);
 
   blink::WebCryptoKeyUsageMask usages = blink::WebCryptoKeyUsageSign;
   blink::WebCryptoKey key;
 
   // Import a zero-byte HMAC key.
@@ skipping 30 matching lines @@
   CryptoData big_data(NULL, UINT_MAX);  // Invalid data of big length.
 
   blink::WebCryptoKey key;
   EXPECT_EQ(
       Status::ErrorDataTooLarge(),
       ImportKey(blink::WebCryptoKeyFormatRaw, CryptoData(big_data),
                 CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1),
                 true, blink::WebCryptoKeyUsageSign, &key));
 }
 
+TEST(WebCryptoHmacTest, ImportKeyEmptyUsage) {
+  blink::WebCryptoKey key;
+  std::string key_raw_hex_in = "025a8cf3f08b4f6c5f33bbc76a471939";
+  EXPECT_EQ(
+      Status::ErrorImportKeyEmptyUsages(),
+      ImportKey(blink::WebCryptoKeyFormatRaw,
+                CryptoData(HexStringToBytes(key_raw_hex_in)),
+                CreateHmacImportAlgorithm(blink::WebCryptoAlgorithmIdSha1),
+                true, 0, &key));
+}
+
 }  // namespace
 
 }  // namespace webcrypto
 
 }  // namespace content