Add unit tests for AndroidVersion and PromotedApp records

app/src/test/java/com/d4rk/androidtutorials/java/data/model/AndroidVersionTest.java

@@ -0,0 +1,37 @@
+package com.d4rk.androidtutorials.java.data.model;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import org.junit.Test;
+
+public class AndroidVersionTest {
+
+    @Test
+    public void androidVersionRecordStoresProvidedValues() {
+        AndroidVersion androidVersion = new AndroidVersion(
+                "13",
+                "API 33",
+                "Tiramisu",
+                "android.os.Build.VERSION_CODES.TIRAMISU",
+                "2022"
+        );
+
+        assertEquals("13", androidVersion.version());
+        assertEquals("API 33", androidVersion.api());
+        assertEquals("Tiramisu", androidVersion.codeName());
+        assertEquals("android.os.Build.VERSION_CODES.TIRAMISU", androidVersion.codenameLiteral());
+        assertEquals("2022", androidVersion.year());
+    }
+
+    @Test
+    public void androidVersionRecordAllowsNullValues() {
+        AndroidVersion androidVersion = new AndroidVersion(null, null, null, null, null);
+
+        assertNull(androidVersion.version());
+        assertNull(androidVersion.api());
+        assertNull(androidVersion.codeName());
+        assertNull(androidVersion.codenameLiteral());
+        assertNull(androidVersion.year());
+    }
+}

app/src/test/java/com/d4rk/androidtutorials/java/data/model/PromotedAppTest.java

@@ -0,0 +1,31 @@
+package com.d4rk.androidtutorials.java.data.model;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import org.junit.Test;
+
+public class PromotedAppTest {
+
+    @Test
+    public void promotedAppRecordStoresProvidedValues() {
+        PromotedApp promotedApp = new PromotedApp(
+                "Android Tutorials",
+                "com.example.tutorials",
+                "https://example.com/icon.png"
+        );
+
+        assertEquals("Android Tutorials", promotedApp.name());
+        assertEquals("com.example.tutorials", promotedApp.packageName());
+        assertEquals("https://example.com/icon.png", promotedApp.iconUrl());
+    }
+
+    @Test
+    public void promotedAppRecordAllowsNullValues() {
+        PromotedApp promotedApp = new PromotedApp(null, null, null);
+
+        assertNull(promotedApp.name());
+        assertNull(promotedApp.packageName());
+        assertNull(promotedApp.iconUrl());
+    }
+}