Add unit tests for Nigori permute and decrypt.

chrome/browser/sync/util/nigori_unittest.cc

Index: chrome/browser/sync/util/nigori_unittest.cc
diff --git a/chrome/browser/sync/util/nigori_unittest.cc b/chrome/browser/sync/util/nigori_unittest.cc
index 4c6af890a689ac5107e0380e3ca15c061ce8fd20..0294ec7650c7a53ca0db383953637c8abe6a1219 100644
--- a/chrome/browser/sync/util/nigori_unittest.cc
+++ b/chrome/browser/sync/util/nigori_unittest.cc
@@ -97,3 +97,32 @@ TEST(NigoriTest, CorruptedCiphertext) {
 
   EXPECT_NE(plaintext, decrypted);
 }
+
+TEST(NigoriTest, Permute) {
+  browser_sync::Nigori nigori("example.com");
+  EXPECT_TRUE(nigori.Init("username", "password"));
+
+  std::string permuted;
+  EXPECT_TRUE(nigori.Permute(browser_sync::Nigori::Password, "test name",
+                             &permuted));
+
+  std::string expected =
+      "prewwdJj2PrGDczvmsHJEE5ndcCyVze8sY9kD5hjY/Tm"
+      "c5kOjXFK7zB3Ss4LlHjEDirMu+vh85JwHOnGrMVe+g==";
+  EXPECT_EQ(expected, permuted);
+}
+
+TEST(NigoriTest, Decrypt) {
+  browser_sync::Nigori nigori("example.com");
+  EXPECT_TRUE(nigori.Init("username", "password"));
+
+  std::string encrypted =
+      "e7+JyS6ibj6F5qqvpseukNRTZ+oBpu5iuv2VYjOfrH1dNiFLNf7Ov0"
+      "kx/zicKFn0lJcbG1UmkNWqIuR4x+quDNVuLaZGbrJPhrJuj7cokCM=";
+
+  std::string plaintext;
+  EXPECT_TRUE(nigori.Decrypt(encrypted, &plaintext));
+
+  std::string expected("test, test, 1, 2, 3");
+  EXPECT_EQ(expected, plaintext);
+}