chore: initialize standalone UPM package

2026-08-26 02:50:03 +08:00
commit 739fe328e7
63 changed files with 4243 additions and 0 deletions
@@ -0,0 +1,89 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+using NUnit.Framework;
+
+namespace ShrinkDataSaver.Tests
+{
+    [TestFixture]
+    public class SaveEncryptorTests
+    {
+        [Test]
+        public void Encrypt_Decrypt_RoundTrip()
+        {
+            var original = Encoding.UTF8.GetBytes("Hello, ShrinkDataSaver!");
+            var password = "TestPassword123";
+
+            var encrypted = SaveEncryptor.Encrypt(original, password);
+            var decrypted = SaveEncryptor.Decrypt(encrypted, password);
+
+            Assert.AreEqual(original, decrypted);
+        }
+
+        [Test]
+        public void Encrypt_Decrypt_LargeData()
+        {
+            var original = new byte[10000];
+            new System.Random(42).NextBytes(original);
+            var password = "LargeDataKey";
+
+            var encrypted = SaveEncryptor.Encrypt(original, password);
+            var decrypted = SaveEncryptor.Decrypt(encrypted, password);
+
+            Assert.AreEqual(original, decrypted);
+        }
+
+        [Test]
+        public void Decrypt_WrongPassword_Throws()
+        {
+            var original = Encoding.UTF8.GetBytes("secret data");
+            var encrypted = SaveEncryptor.Encrypt(original, "correct");
+
+            Assert.Throws<CryptographicException>(() =>
+                SaveEncryptor.Decrypt(encrypted, "wrong"));
+        }
+
+        [Test]
+        public void Encrypt_ProducesDifferentOutput_EachTime()
+        {
+            var data = Encoding.UTF8.GetBytes("same data");
+            var enc1 = SaveEncryptor.Encrypt(data, "key");
+            var enc2 = SaveEncryptor.Encrypt(data, "key");
+
+            // 因为随机 salt/IV，两次加密结果不同
+            Assert.AreNotEqual(enc1, enc2);
+
+            // 但两次都能正确解密
+            Assert.AreEqual(data, SaveEncryptor.Decrypt(enc1, "key"));
+            Assert.AreEqual(data, SaveEncryptor.Decrypt(enc2, "key"));
+        }
+
+        [Test]
+        public void Encrypt_NullData_Throws()
+        {
+            Assert.Throws<ArgumentNullException>(() =>
+                SaveEncryptor.Encrypt(null, "key"));
+        }
+
+        [Test]
+        public void Encrypt_EmptyPassword_Throws()
+        {
+            Assert.Throws<ArgumentException>(() =>
+                SaveEncryptor.Encrypt(new byte[] { 1, 2, 3 }, ""));
+        }
+
+        [Test]
+        public void Decrypt_NullData_Throws()
+        {
+            Assert.Throws<ArgumentNullException>(() =>
+                SaveEncryptor.Decrypt(null, "key"));
+        }
+
+        [Test]
+        public void Decrypt_DataTooShort_Throws()
+        {
+            Assert.Throws<ArgumentException>(() =>
+                SaveEncryptor.Decrypt(new byte[] { 1, 2, 3 }, "key"));
+        }
+    }
+}