From 9f596ae83c7c2466969636ac969ff0baed6c62e6 Mon Sep 17 00:00:00 2001
From: Decebal Suiu <decebal.suiu@gmail.com>
Date: Fri, 29 Nov 2024 21:40:19 +0200
Subject: Add tests for CompoundPluginLoader

---
 .../java/org/pf4j/CompoundPluginLoaderTest.java    | 96 ++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 pf4j/src/test/java/org/pf4j/CompoundPluginLoaderTest.java

diff --git a/pf4j/src/test/java/org/pf4j/CompoundPluginLoaderTest.java b/pf4j/src/test/java/org/pf4j/CompoundPluginLoaderTest.java
new file mode 100644
index 0000000..fcbf3a4
--- /dev/null
+++ b/pf4j/src/test/java/org/pf4j/CompoundPluginLoaderTest.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2012-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.pf4j;
+
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Path;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+class CompoundPluginLoaderTest {
+
+    @Test
+    void addLoaderSuccessfully() {
+        CompoundPluginLoader compoundLoader = new CompoundPluginLoader();
+        PluginLoader mockLoader = mock(PluginLoader.class);
+        compoundLoader.add(mockLoader);
+        assertTrue(compoundLoader.getLoaders().contains(mockLoader));
+    }
+
+    @Test
+    void addLoaderWithConditionTrue() {
+        CompoundPluginLoader compoundLoader = new CompoundPluginLoader();
+        PluginLoader mockLoader = mock(PluginLoader.class);
+        compoundLoader.add(mockLoader, () -> true);
+        assertTrue(compoundLoader.getLoaders().contains(mockLoader));
+    }
+
+    @Test
+    void addLoaderWithConditionFalse() {
+        CompoundPluginLoader compoundLoader = new CompoundPluginLoader();
+        PluginLoader mockLoader = mock(PluginLoader.class);
+        compoundLoader.add(mockLoader, () -> false);
+        assertFalse(compoundLoader.getLoaders().contains(mockLoader));
+    }
+
+    @Test
+    void applicableLoaderFound() {
+        CompoundPluginLoader compoundLoader = new CompoundPluginLoader();
+        PluginLoader mockLoader = mock(PluginLoader.class);
+        Path mockPath = mock(Path.class);
+        when(mockLoader.isApplicable(mockPath)).thenReturn(true);
+        compoundLoader.add(mockLoader);
+        assertTrue(compoundLoader.isApplicable(mockPath));
+    }
+
+    @Test
+    void noApplicableLoaderFound() {
+        CompoundPluginLoader compoundLoader = new CompoundPluginLoader();
+        PluginLoader mockLoader = mock(PluginLoader.class);
+        Path mockPath = mock(Path.class);
+        when(mockLoader.isApplicable(mockPath)).thenReturn(false);
+        compoundLoader.add(mockLoader);
+        assertFalse(compoundLoader.isApplicable(mockPath));
+    }
+
+    @Test
+    void loadPluginSuccessfully() {
+        CompoundPluginLoader compoundLoader = new CompoundPluginLoader();
+        PluginLoader mockLoader = mock(PluginLoader.class);
+        Path mockPath = mock(Path.class);
+        PluginDescriptor mockDescriptor = mock(PluginDescriptor.class);
+        ClassLoader mockClassLoader = mock(ClassLoader.class);
+        when(mockLoader.isApplicable(mockPath)).thenReturn(true);
+        when(mockLoader.loadPlugin(mockPath, mockDescriptor)).thenReturn(mockClassLoader);
+        compoundLoader.add(mockLoader);
+        assertEquals(mockClassLoader, compoundLoader.loadPlugin(mockPath, mockDescriptor));
+    }
+
+    @Test
+    void loadPluginThrowsExceptionWhenNoLoaderApplicable() {
+        CompoundPluginLoader compoundLoader = new CompoundPluginLoader();
+        PluginLoader mockLoader = mock(PluginLoader.class);
+        Path mockPath = mock(Path.class);
+        PluginDescriptor mockDescriptor = mock(PluginDescriptor.class);
+        when(mockLoader.isApplicable(mockPath)).thenReturn(false);
+        compoundLoader.add(mockLoader);
+        assertThrows(RuntimeException.class, () -> compoundLoader.loadPlugin(mockPath, mockDescriptor));
+    }
+
+}
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