Convert tests to Katlin

Author: aidin36

README.md

@@ -79,7 +79,8 @@ Tag size: 128
 
 Open the directory with Android Studio.
 
-From command line, to run the tests execute: `./gradlew app:connectedAndroidTest`
+From command line, to run the tests, start an emulator (or connect a physical phone) and execute:
+`./gradlew app:connectedAndroidTest`
 
 To install the debug build: `./gradlew installDebug`
 

app/build.gradle

@@ -31,10 +31,6 @@ android {
     buildFeatures {
         compose = true
     }
-
-    useLibrary 'android.test.runner'
-    useLibrary 'android.test.base'
-    useLibrary 'android.test.mock'
 }
 
 dependencies {
@@ -52,6 +48,7 @@ dependencies {
     debugImplementation libs.compose.ui.tooling
 
     testImplementation libs.junit
+    
     androidTestImplementation libs.ext.junit
     androidTestImplementation libs.espresso.core
     androidTestImplementation libs.testRunner

app/src/androidTest/java/com/aidinhut/simpletextcrypt/ApplicationTest.java

@@ -0,0 +1,89 @@
+/*
+ * This file is part of SimpleTextCrypt.
+ * Copyright (c) 2015-2026, Aidin Gharibnavaz <aidin@aidinhut.com>
+ *
+ * SimpleTextCrypt is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * SimpleTextCrypt is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with SimpleTextCrypt.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.aidinhut.simpletextcrypt
+
+import android.util.Log
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Implements stand-alone tests for Crypter class.
+ */
+@RunWith(AndroidJUnit4::class)
+class CrypterTest {
+
+    /**
+     * Tests if encrypting and decrypting a data will result
+     * in the same data.
+     */
+    @Test
+    fun testEncryptDecryptValidation() {
+        val passwords = arrayOf(
+            "uir43@#89djhncAd.,[]-+091jhdncq`",
+            "18736",
+            "❤️😜🙈🙃🍎🍀🍵🍪",
+            "Me L@ve Ch33se! Double, no triple cream! Gonna have a heart attack.",
+            "کلید فارسی"
+        )
+        val dataList = arrayOf(
+            "Hi there! I'm a test data that is going to be encrypted.",
+            "I love you! ❤",
+            "یک مسیج فارسی سری که برای بقیه بفرستیم",
+            "A very long message to be secretly send over the network. It's very very very very very very" +
+                    " very very long! And has some UTF-8 characters like یک and マンガが大好きです"
+        )
+
+        for (password in passwords) {
+            for (data in dataList) {
+                validateEncryptDecrypt(password, data)
+            }
+        }
+    }
+
+    private fun validateEncryptDecrypt(password: String, data: String) {
+        Log.i("CrypterTest", "password=$password - data=$data")
+
+        val encryptedData = Crypter.encrypt(password, data)
+        val decryptedData = Crypter.decrypt(password, encryptedData)
+
+        assertEquals(data, decryptedData)
+    }
+
+    /**
+     * Tests if we can decrypt messages that are encrypted with an old version of the app.
+     */
+    @Test
+    fun testLegacyAlgorithm() {
+        assertEquals(
+            "Hi! I'm encrypted with the old algorithm.",
+            Crypter.legacyDecrypt(
+                "buSD4778@af-bq3299",
+                "q:*`Bgd|I[2y9#[SRbsqNBNdEb+7gBaGSUylWNcSHQWw+Sq32XDF6N3avTWiBzUyObviPqdTzkFEDd2o"
+            )
+        )
+        assertEquals(
+            "Another message for testing. 😀🙃",
+            Crypter.legacyDecrypt(
+                "1356",
+                "g4A!>y{%pz}Q4B\u007FRr9Da4/d/y33wGJichEjYy3Z+uRgKaTz4WvsOfcC/h2HJTDoSCktv2WNFRM5gdXEI"
+            )
+        )
+    }
+}