Created GUITestUtils

gui/bukkit/src/test/java/it/angrybear/yagl/utils/GUITestUtils.java

@@ -0,0 +1,34 @@
+package it.angrybear.yagl.utils;
+
+import org.bukkit.Bukkit;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.jetbrains.annotations.NotNull;
+import org.mockito.MockedStatic;
+
+import java.util.function.Consumer;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
+
+/**
+ * A collection of utilities used to test the module
+ */
+public class GUITestUtils {
+
+    /**
+     * Mocks the returned value of {@link JavaPlugin#getProvidingPlugin(Class)} and executes the given function.
+     *
+     * @param function the function
+     */
+    public static void mockPlugin(final @NotNull Consumer<Plugin> function) {
+        try (MockedStatic<JavaPlugin> ignored = mockStatic(JavaPlugin.class)) {
+            JavaPlugin plugin = mock(JavaPlugin.class);
+            when(JavaPlugin.getProvidingPlugin(any())).thenAnswer(a -> plugin);
+            when(Bukkit.getPluginManager()).thenReturn(mock(PluginManager.class));
+
+            function.accept(plugin);
+        }
+    }
+}