diff --git a/plugin/src/test/java/me/filoghost/chestcommands/api/ConfigurableIconTest.java b/plugin/src/test/java/me/filoghost/chestcommands/api/ConfigurableIconTest.java
new file mode 100644
index 0000000..895ed3b
--- /dev/null
+++ b/plugin/src/test/java/me/filoghost/chestcommands/api/ConfigurableIconTest.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) filoghost and contributors
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+package me.filoghost.chestcommands.api;
+
+import me.filoghost.chestcommands.icon.BaseConfigurableIcon;
+import me.filoghost.chestcommands.test.BukkitMocks;
+import org.bukkit.Material;
+import org.junit.jupiter.api.AfterAll;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.*;
+
+class ConfigurableIconTest {
+
+    @BeforeAll
+    static void beforeAll() {
+        ChestCommandsAPI.registerPlaceholder(BukkitMocks.PLUGIN, "test", (player, argument) -> {
+            if (argument != null) {
+                return argument;
+            } else {
+                return "EMPTY";
+            }
+        });
+    }
+
+    @AfterAll
+    static void afterAll() {
+        ChestCommandsAPI.unregisterPlaceholder(BukkitMocks.PLUGIN, "test");
+    }
+
+    @Test
+    void customPlaceholderReplacements() {
+        BaseConfigurableIcon icon = (BaseConfigurableIcon) ConfigurableIcon.create(Material.STONE);
+        icon.setPlaceholdersEnabled(true);
+        icon.setName("{test: start} abc {test} {MockPlugin/test} {test: 1} {mOckPLuGin/tEsT: 2} 123 {test: end}");
+        assertThat(icon.renderName(BukkitMocks.PLAYER)).isEqualTo("start abc EMPTY EMPTY 1 2 123 end");
+    }
+
+    @Test
+    void placeholdersEnabled() {
+        BaseConfigurableIcon icon = (BaseConfigurableIcon) ConfigurableIcon.create(Material.STONE);
+        icon.setPlaceholdersEnabled(true);
+        icon.setName("abc {player} {test} 123");
+        assertThat(icon.renderName(BukkitMocks.PLAYER)).isEqualTo("abc " + BukkitMocks.PLAYER.getName() + " EMPTY 123");
+    }
+
+    @Test
+    void placeholdersNotEnabled() {
+        BaseConfigurableIcon icon = (BaseConfigurableIcon) ConfigurableIcon.create(Material.STONE);
+        icon.setName("abc {player} {test} 123");
+        assertThat(icon.renderName(BukkitMocks.PLAYER)).isEqualTo("abc {player} {test} 123");
+    }
+
+    @Test
+    void dynamicPlaceholderRegistration() {
+        BaseConfigurableIcon icon = (BaseConfigurableIcon) ConfigurableIcon.create(Material.STONE);
+        icon.setPlaceholdersEnabled(true);
+        icon.setName("abc {temp} 123");
+
+        try {
+            ChestCommandsAPI.registerPlaceholder(BukkitMocks.PLUGIN, "temp", (player, argument) -> "value");
+
+            assertThat(icon.renderName(BukkitMocks.PLAYER)).isEqualTo("abc value 123");
+        } finally {
+            ChestCommandsAPI.unregisterPlaceholder(BukkitMocks.PLUGIN, "temp");
+        }
+    }
+
+    @Test
+    void placeholderUnregistration() {
+        BaseConfigurableIcon icon = (BaseConfigurableIcon) ConfigurableIcon.create(Material.STONE);
+        icon.setPlaceholdersEnabled(true);
+        icon.setName("abc {temp} 123");
+
+        try {
+            ChestCommandsAPI.registerPlaceholder(BukkitMocks.PLUGIN, "temp", (player, argument) -> "value");
+        } finally {
+            ChestCommandsAPI.unregisterPlaceholder(BukkitMocks.PLUGIN, "temp");
+        }
+
+        assertThat(icon.renderName(BukkitMocks.PLAYER)).isEqualTo("abc {temp} 123");
+    }
+
+}
diff --git a/plugin/src/test/java/me/filoghost/chestcommands/api/MenuTest.java b/plugin/src/test/java/me/filoghost/chestcommands/api/MenuTest.java
new file mode 100644
index 0000000..7a70aa6
--- /dev/null
+++ b/plugin/src/test/java/me/filoghost/chestcommands/api/MenuTest.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) filoghost and contributors
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+package me.filoghost.chestcommands.api;
+
+import me.filoghost.chestcommands.test.BukkitMocks;
+import org.bukkit.Material;
+import org.bukkit.inventory.ItemStack;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+
+import static org.assertj.core.api.Assertions.*;
+
+class MenuTest {
+
+    @Test
+    void setIcon() {
+        Menu menu = createMenu(1);
+        menu.setIcon(0, 0, StaticIcon.create(new ItemStack(Material.APPLE)));
+
+        assertThat(menu.getIcon(0, 0)).isNotNull();
+    }
+
+    @Test
+    void unsetIcon() {
+        Menu menu = createMenu(1);
+        menu.setIcon(0, 0, StaticIcon.create(new ItemStack(Material.APPLE)));
+        menu.setIcon(0, 0, null);
+
+        assertThat(menu.getIcon(0, 0)).isNull();
+    }
+
+    @Test
+    void iterationRowsColumns() {
+        Menu menu = createMenu(3);
+
+        for (int row = 0; row < menu.getRows(); row++) {
+            for (int column = 0; column < menu.getColumns(); column++) {
+                menu.setIcon(row, column, StaticIcon.create(new ItemStack(Material.APPLE)));
+            }
+        }
+    }
+
+    @Test
+    void invalidEmptyMenu() {
+        assertThatIllegalArgumentException().isThrownBy(() -> {
+            createMenu(0);
+        });
+    }
+
+    @ParameterizedTest
+    @CsvSource({
+            "9, 0",
+            "0, 9",
+            "-1, 0",
+            "0, -1",
+    })
+    void iconOutOfBounds(int row, int column) {
+        Menu menu = createMenu(1);
+        assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(() -> {
+            menu.getIcon(row, column);
+        });
+    }
+
+    private Menu createMenu(int rowCount) {
+        return Menu.create(BukkitMocks.PLUGIN, "Test menu", rowCount);
+    }
+
+
+}
diff --git a/plugin/src/test/java/me/filoghost/chestcommands/test/BukkitMocks.java b/plugin/src/test/java/me/filoghost/chestcommands/test/BukkitMocks.java
new file mode 100644
index 0000000..04ec7b3
--- /dev/null
+++ b/plugin/src/test/java/me/filoghost/chestcommands/test/BukkitMocks.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) filoghost and contributors
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+package me.filoghost.chestcommands.test;
+
+import me.filoghost.chestcommands.DefaultBackendAPI;
+import me.filoghost.chestcommands.api.internal.BackendAPI;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
+import static org.mockito.Mockito.*;
+
+public final class BukkitMocks {
+
+    public static final Plugin PLUGIN;
+    public static final Player PLAYER;
+
+    static {
+        // Server server = mock(Server.class, RETURNS_DEEP_STUBS);
+        // Bukkit.setServer(server);
+        PLUGIN = mock(Plugin.class);
+        when(PLUGIN.getName()).thenReturn("MockPlugin");
+        PLAYER = mock(Player.class);
+        when(PLAYER.getName()).thenReturn("filoghost");
+        BackendAPI.setImplementation(new DefaultBackendAPI());
+    }
+
+}
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 3e91498..7ce5dd7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,6 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <maven.test.skip>true</maven.test.skip>
     </properties>
 
     <modules>
@@ -136,6 +135,27 @@
             <version>20.1.0</version>
             <scope>provided</scope>
         </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>5.6.2</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.17.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>3.5.13</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -211,6 +231,12 @@
                     <artifactId>directory-maven-plugin</artifactId>
                     <version>0.3.1</version>
                 </plugin>
+
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-surefire-plugin</artifactId>
+                    <version>2.22.2</version>
+                </plugin>
             </plugins>
         </pluginManagement>