Add DirectoryAttackTest

src/test/java/run/halo/app/utils/DirectoryAttackTest.java

@@ -0,0 +1,33 @@
+package run.halo.app.utils;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+/**
+ * Directory attack test.
+ *
+ * @author johnniang
+ * @date 4/9/19
+ */
+public class DirectoryAttackTest {
+
+    private String userHome = System.getProperty("user.home");
+
+    @Test
+    public void compareDirectoryTest() {
+
+        String workDir = userHome + "/halo-test/";
+        Path workDirPath = Paths.get(workDir);
+
+        Path testPath = Paths.get(userHome + "/../../etc/passwd");
+
+        System.out.println("Work directory path: " + workDirPath);
+        System.out.println("Test path: " + testPath);
+
+        Assert.assertFalse(testPath.startsWith(workDirPath));
+        Assert.assertFalse(workDirPath.startsWith(testPath));
+    }
+}