1 files changed, 84 insertions, 0 deletions
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/IOReadLineTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/IOReadLineTest.java
new file mode 100644
index 0000000000..13783a051d
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/IOReadLineTest.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2015, Google Inc. 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 java.nio.charset.StandardCharsets.UTF_8;
+import static org.junit.Assert.assertEquals;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.Collection;
+
+import org.eclipse.jgit.lib.Constants;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameter;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(Parameterized.class)
+public class IOReadLineTest {
+	@Parameter(0)
+	public boolean buffered;
+
+	@Parameter(1)
+	public int sizeHint;
+
+	@SuppressWarnings("boxing")
+	@Parameters(name="buffered={0}, sizeHint={1}")
+	public static Collection<Object[]> getParameters() {
+		Boolean[] bv = {false, true};
+		Integer[] sv = {-1, 0, 1, 2, 3, 4, 64};
+		Collection<Object[]> params = new ArrayList<>(bv.length * sv.length);
+		for (boolean b : bv) {
+			for (Integer s : sv) {
+				params.add(new Object[]{b, s});
+			}
+		}
+		return params;
+	}
+
+	@Test
+	public void testReadLine() throws Exception {
+		Reader r = newReader("foo\nbar\nbaz\n");
+		assertEquals("foo\n", readLine(r));
+		assertEquals("bar\n", readLine(r));
+		assertEquals("baz\n", readLine(r));
+		assertEquals("", readLine(r));
+	}
+
+	@Test
+	public void testReadLineNoTrailingNewline() throws Exception {
+		Reader r = newReader("foo\nbar\nbaz");
+		assertEquals("foo\n", readLine(r));
+		assertEquals("bar\n", readLine(r));
+		assertEquals("baz", readLine(r));
+		assertEquals("", readLine(r));
+	}
+
+	private String readLine(Reader r) throws Exception {
+		return IO.readLine(r, sizeHint);
+	}
+
+	private Reader newReader(String in) {
+		Reader r = new InputStreamReader(
+				new ByteArrayInputStream(Constants.encode(in)), UTF_8);
+		if (buffered) {
+			r = new BufferedReader(r);
+		}
+		assertEquals(Boolean.valueOf(buffered),
+				Boolean.valueOf(r.markSupported()));
+		return r;
+	}
+}