1 files changed, 196 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/io/file/PathUtilsContentEqualsTest.java b/src/test/java/org/apache/commons/io/file/PathUtilsContentEqualsTest.java
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+++ b/src/test/java/org/apache/commons/io/file/PathUtilsContentEqualsTest.java
@@ -0,0 +1,196 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.commons.io.file;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+public class PathUtilsContentEqualsTest {
+
+    @TempDir
+    public File temporaryFolder;
+
+    private String getName() {
+        return this.getClass().getSimpleName();
+    }
+
+    @Test
+    public void testDirectoryAndFileContentEquals() throws Exception {
+        // Non-existent files
+        final Path path1 = new File(temporaryFolder, getName()).toPath();
+        final Path path2 = new File(temporaryFolder, getName() + "2").toPath();
+        assertTrue(PathUtils.directoryAndFileContentEquals(null, null));
+        assertFalse(PathUtils.directoryAndFileContentEquals(null, path1));
+        assertFalse(PathUtils.directoryAndFileContentEquals(path1, null));
+        // both don't exist
+        assertTrue(PathUtils.directoryAndFileContentEquals(path1, path1));
+        assertTrue(PathUtils.directoryAndFileContentEquals(path1, path2));
+        assertTrue(PathUtils.directoryAndFileContentEquals(path2, path2));
+        assertTrue(PathUtils.directoryAndFileContentEquals(path2, path1));
+        // Tree equals true tests
+        {
+            // Trees of files only that contain the same files.
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-files-only/directory-files-only1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-files-only/directory-files-only2");
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir1, dir2));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir2, dir2));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir1, dir1));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir2, dir2));
+        }
+        {
+            // Trees of directories containing other directories.
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-then-files/dir1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-then-files/dir2");
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir1, dir2));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir2, dir2));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir1, dir1));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir2, dir2));
+        }
+        {
+            // Trees of directories containing other directories and files.
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1");
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir1, dir2));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir2, dir2));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir1, dir1));
+            assertTrue(PathUtils.directoryAndFileContentEquals(dir2, dir2));
+        }
+        // Tree equals false tests
+        {
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1/directory-files-only1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1/");
+            assertFalse(PathUtils.directoryAndFileContentEquals(dir1, dir2));
+            assertFalse(PathUtils.directoryAndFileContentEquals(dir2, dir1));
+        }
+        {
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-then-files");
+            assertFalse(PathUtils.directoryAndFileContentEquals(dir1, dir2));
+            assertFalse(PathUtils.directoryAndFileContentEquals(dir2, dir1));
+        }
+    }
+
+    @Test
+    public void testDirectoryContentEquals() throws Exception {
+        // Non-existent files
+        final Path path1 = new File(temporaryFolder, getName()).toPath();
+        final Path path2 = new File(temporaryFolder, getName() + "2").toPath();
+        assertTrue(PathUtils.directoryContentEquals(null, null));
+        assertFalse(PathUtils.directoryContentEquals(null, path1));
+        assertFalse(PathUtils.directoryContentEquals(path1, null));
+        // both don't exist
+        assertTrue(PathUtils.directoryContentEquals(path1, path1));
+        assertTrue(PathUtils.directoryContentEquals(path1, path2));
+        assertTrue(PathUtils.directoryContentEquals(path2, path2));
+        assertTrue(PathUtils.directoryContentEquals(path2, path1));
+        // Tree equals true tests
+        {
+            // Trees of files only that contain the same files.
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-files-only/directory-files-only1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-files-only/directory-files-only2");
+            assertTrue(PathUtils.directoryContentEquals(dir1, dir2));
+            assertTrue(PathUtils.directoryContentEquals(dir2, dir2));
+            assertTrue(PathUtils.directoryContentEquals(dir1, dir1));
+            assertTrue(PathUtils.directoryContentEquals(dir2, dir2));
+        }
+        {
+            // Trees of directories containing other directories.
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-then-files/dir1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-then-files/dir2");
+            assertTrue(PathUtils.directoryContentEquals(dir1, dir2));
+            assertTrue(PathUtils.directoryContentEquals(dir2, dir2));
+            assertTrue(PathUtils.directoryContentEquals(dir1, dir1));
+            assertTrue(PathUtils.directoryContentEquals(dir2, dir2));
+        }
+        {
+            // Trees of directories containing other directories and files.
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1");
+            assertTrue(PathUtils.directoryContentEquals(dir1, dir2));
+            assertTrue(PathUtils.directoryContentEquals(dir2, dir2));
+            assertTrue(PathUtils.directoryContentEquals(dir1, dir1));
+            assertTrue(PathUtils.directoryContentEquals(dir2, dir2));
+        }
+        // Tree equals false tests
+        {
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1/directory-files-only1");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files/dirs-and-files1/");
+            assertFalse(PathUtils.directoryContentEquals(dir1, dir2));
+            assertFalse(PathUtils.directoryContentEquals(dir2, dir1));
+        }
+        {
+            final Path dir1 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-and-files");
+            final Path dir2 = Paths.get("src/test/resources/dir-equals-tests/dir-equals-dirs-then-files");
+            assertFalse(PathUtils.directoryContentEquals(dir1, dir2));
+            assertFalse(PathUtils.directoryContentEquals(dir2, dir1));
+        }
+    }
+
+    @Test
+    public void testFileContentEquals() throws Exception {
+        // Non-existent files
+        final Path path1 = new File(temporaryFolder, getName()).toPath();
+        final Path path2 = new File(temporaryFolder, getName() + "2").toPath();
+        assertTrue(PathUtils.fileContentEquals(null, null));
+        assertFalse(PathUtils.fileContentEquals(null, path1));
+        assertFalse(PathUtils.fileContentEquals(path1, null));
+        // both don't exist
+        assertTrue(PathUtils.fileContentEquals(path1, path1));
+        assertTrue(PathUtils.fileContentEquals(path1, path2));
+        assertTrue(PathUtils.fileContentEquals(path2, path2));
+        assertTrue(PathUtils.fileContentEquals(path2, path1));
+
+        // Directories
+        assertThrows(IOException.class, () -> PathUtils.fileContentEquals(temporaryFolder.toPath(), temporaryFolder.toPath()));
+
+        // Different files
+        final Path objFile1 = Paths.get(temporaryFolder.getAbsolutePath(), getName() + ".object");
+        PathUtils.copyFile(getClass().getResource("/java/lang/Object.class"), objFile1);
+
+        final Path objFile1b = Paths.get(temporaryFolder.getAbsolutePath(), getName() + ".object2");
+        PathUtils.copyFile(getClass().getResource("/java/lang/Object.class"), objFile1b);
+
+        final Path objFile2 = Paths.get(temporaryFolder.getAbsolutePath(), getName() + ".collection");
+        PathUtils.copyFile(getClass().getResource("/java/util/Collection.class"), objFile2);
+
+        assertFalse(PathUtils.fileContentEquals(objFile1, objFile2));
+        assertFalse(PathUtils.fileContentEquals(objFile1b, objFile2));
+        assertTrue(PathUtils.fileContentEquals(objFile1, objFile1b));
+
+        assertTrue(PathUtils.fileContentEquals(objFile1, objFile1));
+        assertTrue(PathUtils.fileContentEquals(objFile1b, objFile1b));
+        assertTrue(PathUtils.fileContentEquals(objFile2, objFile2));
+
+        // Equal files
+        Files.createFile(path1);
+        Files.createFile(path2);
+        assertTrue(PathUtils.fileContentEquals(path1, path1));
+        assertTrue(PathUtils.fileContentEquals(path1, path2));
+    }
+
+}