1 files changed, 49 insertions, 0 deletions
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/HexTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/HexTest.java
new file mode 100644
index 0000000000..32af07f259
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/HexTest.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2010, Google Inc.
+ * Copyright (C) 2020 Michael Dardis and others
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Distribution License v. 1.0 which is available at
+ * https://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+package org.eclipse.jgit.util;
+
+import static org.eclipse.jgit.util.Hex.decode;
+import static org.eclipse.jgit.util.Hex.toHexString;
+import static org.junit.Assert.assertEquals;
+
+import org.eclipse.jgit.junit.JGitTestUtil;
+import org.eclipse.jgit.lib.Constants;
+import org.junit.Test;
+
+public class HexTest {
+	@Test
+	public void testEncode() {
+		assertEquals("68690a", toHexString(b("hi\n")));
+		assertEquals("0001020d0a0971", toHexString(b("\0\1\2\r\n\tq")));
+	}
+
+	@Test
+	public void testDecode() {
+		JGitTestUtil.assertEquals(b("hi\n"), decode("68690a"));
+		JGitTestUtil.assertEquals(b("\0\1\2\r\n\tq"), decode("0001020d0a0971"));
+		JGitTestUtil.assertEquals(b("\u000EB"), decode("0E42"));
+	}
+
+	@Test
+	public void testEncodeMatchesDecode() {
+		String[] testStrings = { "", "cow", "a", "a secret string",
+				"\0\1\2\r\n\t" };
+		for (String e : testStrings) {
+			JGitTestUtil.assertEquals(b(e), decode(toHexString(b(e))));
+		}
+	}
+
+	private static byte[] b(String str) {
+		return Constants.encode(str);
+	}
+
+}