Add unit test

Author: ennoruijters

src/test/java/org/carlspring/cloud/storage/s3fs/fileSystemProvider/CopyTest.java

@@ -19,6 +19,7 @@
 import org.junit.jupiter.api.Test;
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -126,6 +127,37 @@ void copyAlreadyExists()
         assertNotNull(exception);
     }
 
+    @Test
+    public void copyDirectory() throws IOException
+    {
+        final String content = "sample-content";
+
+        // fixtures
+        S3ClientMock client = S3MockFactory.getS3ClientMock();
+        client.bucket("bucketA").dir("dir1").file("dir1/file", content.getBytes());
+        FileSystem fs = createNewS3FileSystem();
+        Path dir1 = fs.getPath("/bucketA", "dir1");
+        Path file1 = fs.getPath("/bucketA", "dir1", "file");
+        Path dir2 = fs.getPath("/bucketA", "dir2");
+        Path file2 = fs.getPath("/bucketA", "dir2", "file");
+
+        // assert
+        assertTrue(Files.exists(dir1));
+        assertTrue(Files.exists(file1));
+        assertTrue(Files.isDirectory(dir1));
+        assertTrue(Files.isRegularFile(file1));
+        assertFalse(Files.exists(dir2));
+        assertFalse(Files.exists(file2));
+
+        // act
+        s3fsProvider.copy(dir1, dir2);
+
+        // assertions
+        assertTrue(Files.exists(dir2));
+        assertTrue(Files.isDirectory(dir2));
+        assertFalse(Files.exists(file2));
+    }
+
     /**
      * create a new file system for s3 scheme with fake credentials
      * and global endpoint