Updated

2013-03-11 13:35:17 +01:00
parent 849774dceb
commit f150259eee
1189 changed files with 341774 additions and 2001 deletions
@@ -0,0 +1,83 @@
+// Copyright 2011 The Closure Library Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS-IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/**
+ * @fileoverview Unit tests for the abstract cryptographic hash interface.
+ *
+ */
+
+goog.provide('goog.crypt.hash_test');
+
+goog.require('goog.testing.asserts');
+goog.setTestOnly('hash_test');
+
+
+goog.crypt.hash_test.runBasicTests = function(hash) {
+  // Compute some hash.
+  hash.update([97, 158]);
+  var golden = hash.digest();
+
+  // Recompute the hash.
+  hash.reset();
+  hash.update([97, 158]);
+  assertArrayEquals('The reset did not produce the initial state',
+      golden, hash.digest());
+
+  // Check for a trivial collision.
+  hash.reset();
+  hash.update([158, 97]);
+  assertTrue('Swapping bytes resulted in a hash collision',
+      !!goog.testing.asserts.findDifferences(golden, hash.digest()));
+
+  // Compute in parts.
+  hash.reset();
+  hash.update([97]);
+  hash.update([158]);
+  assertArrayEquals('Partial updates resulted in a different hash',
+      golden, hash.digest());
+
+  // Test update with specified length.
+  hash.reset();
+  hash.update([97, 158], 0);
+  hash.update([97, 158, 32], 2);
+  assertArrayEquals('Updating with an explicit buffer length did not work',
+      golden, hash.digest());
+
+  // Test array and string inputs.
+  hash.reset();
+  hash.update([97, 66]);
+  golden = hash.digest();
+  hash.reset();
+  hash.update('aB');
+  assertArrayEquals('String and array inputs should give the same result',
+      golden, hash.digest());
+
+  // Empty hash.
+  hash.reset();
+  var empty = hash.digest();
+  assertTrue('Empty hash collided with a non-trivial one',
+      !!goog.testing.asserts.findDifferences(golden, empty));
+
+  // Zero-length array update.
+  hash.reset();
+  hash.update([]);
+  assertArrayEquals('Updating with an empty array did not give an empty hash',
+      empty, hash.digest());
+
+  // Zero-length string update.
+  hash.reset();
+  hash.update('');
+  assertArrayEquals('Updating with an empty string did not give an empty hash',
+      empty, hash.digest());
+};