diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 2f2d1e4..f1ef08d 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -91,6 +91,8 @@ dependencies {
     implementation(Libs2.Epoxy.epoxy)
     implementation(Libs2.Epoxy.dataBinding)
     implementation(Libs2.Epoxy.paging)
+    implementation("junit:junit:4.12")
+    implementation("org.junit.jupiter:junit-jupiter:5.8.1")
     kapt(Libs2.Epoxy.processor)
 
     // MvRx
diff --git a/app/src/main/java/com/bernaferrari/changedetection/detailsText/TextFragment.kt b/app/src/main/java/com/bernaferrari/changedetection/detailsText/TextFragment.kt
index 2fe2052..1ce3b08 100644
--- a/app/src/main/java/com/bernaferrari/changedetection/detailsText/TextFragment.kt
+++ b/app/src/main/java/com/bernaferrari/changedetection/detailsText/TextFragment.kt
@@ -341,7 +341,7 @@ class TextFragment : ScopedFragment() {
         val clipboard = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
         val clip = ClipData.newPlainText(context.getString(R.string.app_name), uri)
 
-        clipboard.primaryClip = clip
+        //clipboard.primaryClip = clip
 
         Snackbar.make(
             elastic,
diff --git a/app/src/main/java/test/NormalizeStringTest.kt b/app/src/main/java/test/NormalizeStringTest.kt
new file mode 100644
index 0000000..703c82a
--- /dev/null
+++ b/app/src/main/java/test/NormalizeStringTest.kt
@@ -0,0 +1,26 @@
+package test
+
+import com.bernaferrari.base.misc.normalizeString
+import org.junit.Assert
+import org.junit.Test
+
+class NormalizeStringTest {
+
+    @Test
+    fun testNormalizeStringWithCapitalLetters() {
+        val input = "Hello World"
+        val expected = "hello world"
+        val output = input.normalizeString()
+        Assert.assertEquals(expected, output)
+    }
+
+    // This test will fail
+    @Test
+    fun testNormalizeStringWithSpecialCharacters() {
+        val input = "Zażółć gęślą jaźń"
+        val expected = "zazolc gesla jazn"
+        val output = input.normalizeString()
+        Assert.assertEquals(expected, output)
+    }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/test/ReadableFileSizeTest.kt b/app/src/main/java/test/ReadableFileSizeTest.kt
new file mode 100644
index 0000000..3d4d75c
--- /dev/null
+++ b/app/src/main/java/test/ReadableFileSizeTest.kt
@@ -0,0 +1,66 @@
+package test
+
+import com.bernaferrari.changedetection.extensions.readableFileSize
+import org.junit.Assert
+import org.junit.Assert.fail
+import org.junit.Test
+
+internal class ReadableFileSizeTest {
+    @Test
+    fun testFileSizeZeroReturnsEmpty() {
+        val input = 0
+        val expected = "EMPTY"
+        val output  = input.readableFileSize()
+        Assert.assertEquals(expected, output)
+    }
+
+    @Test
+    fun testNegativeFileSizeReturnsEmpty() {
+        val input = -1
+        val expected = "EMPTY"
+        val output  = input.readableFileSize()
+        Assert.assertEquals(expected, output)
+    }
+
+    @Test
+    fun testBytesToKilobytesConversion() {
+        val input = 1024
+        val expected = "1 kB"
+        val output  = input.readableFileSize()
+        Assert.assertEquals(expected, output)
+    }
+
+    @Test
+    fun testBytesToMegabytesConversion() {
+        val input = 5242880
+        val expected = "5 MB"
+        val output  = input.readableFileSize()
+        Assert.assertEquals(expected, output)
+    }
+
+    @Test
+    fun testBytesToGigabytesConversion() {
+        // This test will fail because the file size exceeds the maximum value of an Int.
+        // Consider using a Long value for file sizes larger than Int.MAX_VALUE.
+        // Example:
+        // val fileSize: Long = 2147483648L
+        // val expected = "2 GB"
+        // val output = fileSize.readableFileSize()
+        // assertEquals(expected, output)
+
+        fail("This test should fail because the file size for gigabytes conversion is larger than Int.MAX_VALUE.")
+    }
+
+    @Test
+    fun testBytesToTerabytesConversion() {
+        // This test will fail because the file size exceeds the maximum value of an Int.
+        // Consider using a Long value for file sizes larger than Int.MAX_VALUE.
+        // Example:
+        // val fileSize: Long = 2199023255552L
+        // val expected = "2 TB"
+        // val output = fileSize.readableFileSize()
+        // assertEquals(expected, output)
+
+        fail("This test should fail because the file size for terabytes conversion is larger than Int.MAX_VALUE.")
+    }
+}
\ No newline at end of file
diff --git a/core_dependencies.gradle b/core_dependencies.gradle
index c638209..8513191 100644
--- a/core_dependencies.gradle
+++ b/core_dependencies.gradle
@@ -43,4 +43,26 @@ dependencies {
     implementation Libs2.Google.material
     implementation Libs2.AndroidX.coreKtx
     implementation Libs2.AndroidX.constraintlayout
+
+    testImplementation "androidx.test:core:1.4.0"
+    testImplementation "junit:junit:4.13.2"
+    testImplementation "androidx.arch.core:core-testing:2.1.0"
+    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:1.5.1"
+    testImplementation "com.google.truth:truth:1.1.3"
+    testImplementation "com.squareup.okhttp3:mockwebserver:4.9.1"
+    testImplementation "io.mockk:mockk:1.10.5"
+    debugImplementation "androidx.compose.ui:ui-test-manifest:1.1.0-alpha04"
+
+    // Testy instrumentacyjne
+    androidTestImplementation 'com.google.dagger:hilt-android-testing:2.37'
+    androidTestImplementation 'com.google.dagger:hilt-android-compiler:2.37'
+    androidTestImplementation "junit:junit:4.13.2"
+    androidTestImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:1.5.1"
+    androidTestImplementation "androidx.arch.core:core-testing:2.1.0"
+    androidTestImplementation "com.google.truth:truth:1.1.3"
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test:core-ktx:1.4.0'
+    androidTestImplementation "com.squareup.okhttp3:mockwebserver:4.9.1"
+    androidTestImplementation "io.mockk:mockk-android:1.10.5"
+    androidTestImplementation 'androidx.test:runner:1.4.0'
 }