pkg/crypto: move tests to unittest package

pkg/crypto/test/sha256_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Library tag to allow Dartium to run the tests.
 library sha256_test;
 
-import "package:expect/expect.dart";
+import "package:unittest/unittest.dart";
 import "package:crypto/crypto.dart";
 
 part 'sha256_long_test_vectors.dart';
 part 'sha256_short_test_vectors.dart';
 
-List<int> createTestArr(int len) {
-  var arr = new List<int>(len);
-  for (var i = 0; i < len; i++) {
-    arr[i] = i;
-  }
-  return arr;
+
+void main() {
+  test('expected values', _testExpectedValues);
+  test('invalid use', _testInvalidUse);
+  test('repeated digest', _testRepeatedDigest);
+  test('long inputs',
+      () => _testStandardVectors(sha256_long_inputs, sha256_long_mds));
+  test('short inputs',
+      () => _testStandardVectors(sha256_short_inputs, sha256_short_mds));
 }
 
-void test() {
-  final expected_values = const [
+void _testExpectedValues() {
+  var expectedValues = const [
       'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855',
       '6e340b9cffb37a989ca544e6bb780a2c78901d3fb33738768511a30617afa01d',
       'b413f47d13ee2fe6c845b2ee141af81de858df4ec549a58b7970bb96645bc8d2',
       'ae4b3280e56e2faf83f414a6e3dabe9d5fbe18976544c05fed121accb85b53fc',
       '054edec1d0211f624fed0cbca9d4f9400b0e491c43742af2c5b0abebf0c990d8',
       '08bb5e5d6eaac1049ede0893d30ed022b1a4d9b5b48db414871f51c9cb35283d',
       '17e88db187afd62c16e5debf3e6527cd006bc012bc90b51a810cd80c2d511f43',
       '57355ac3303c148f11aef7cb179456b9232cde33a818dfda2c2fcb9325749a6b',
       '8a851ff82ee7048ad09ec3847f1ddf44944104d2cbd17ef4e3db22c6785a0d45',
       'f8348e0b1df00833cbbbd08f07abdecc10c0efb78829d7828c62a7f36d0cc549',
@@ skipping 237 matching lines @@
       '4b96ec3b91e9f764ac0227ca7df451bd8294cd46298047b43b960ae1c0b0afc5',
       'c6fefe1bfbe6f5364bf0e40447ffca27fde55f1cd815e1fa3bafb46a41c91749',
       '552a69d052ae2980aa92ef44b4a8752fc585d70127d9df1ac53137e266786e4d',
       '369d7da16156c5e2c0d519cdbab3996a7249e20d3e48c36a3a873e987190bd89',
       'ef67e0723230f6c535ff556e45ca2174e1e97deed306e9e87f1b65579076ec06',
       '2cb1e75cd7505a2783769276f30b122cb136fbbd03300510b71a7196ca670b37',
       '1211b6885890be48f89934ec5246f1ce3cfff46c626cfcd686d5fdce9b1fb830',
       'd6a8bdb01e763fb64f3a02512e7be905679a5add6bb408f8750d679d17cad92f',
       '3f8591112c6bbe5c963965954e293108b7208ed2af893e500d859368c654eabe' ];
 
-  for (var i = 0; i < expected_values.length; i++) {
+  for (var i = 0; i < expectedValues.length; i++) {
     var hash = new SHA256();
-    hash.add(createTestArr(i));
+    hash.add(new List<int>.generate(i, (j) => j, growable: false));
     var d = hash.close();
-    Expect.equals(expected_values[i], CryptoUtils.bytesToHex(d), '$i');
+    expect(expectedValues[i], CryptoUtils.bytesToHex(d), reason: '$i');
   }
 }
 
-void testInvalidUse() {
+void _testInvalidUse() {
   var sha = new SHA256();
   sha.close();
-  Expect.throws(() => sha.add([0]), (e) => e is StateError);
+  expect(() => sha.add([0]), throwsStateError);
 }
 
-void testRepeatedDigest() {
+void _testRepeatedDigest() {
   var sha = new SHA256();
   var digest = sha.close();
-  Expect.listEquals(digest, sha.close());
+  expect(digest, sha.close());
 }
 
-void testStandardVectors(inputs, mds) {
+void _testStandardVectors(inputs, mds) {
   for (var i = 0; i < inputs.length; i++) {
     var hash = new SHA256();
     hash.add(inputs[i]);
     var d = hash.close();
-    Expect.equals(mds[i], CryptoUtils.bytesToHex(d), '$i');
+    expect(mds[i], CryptoUtils.bytesToHex(d), reason: '$i');
   }
 }
-
-void main() {
-  test();
-  testInvalidUse();
-  testRepeatedDigest();
-  testStandardVectors(sha256_long_inputs, sha256_long_mds);
-  testStandardVectors(sha256_short_inputs, sha256_short_mds);
-}
-