1 files changed, 77 insertions, 0 deletions
diff --git a/src/java_tools/singlejar/javatests/com/google/devtools/build/zip/ExtraDataTest.java b/src/java_tools/singlejar/javatests/com/google/devtools/build/zip/ExtraDataTest.java
new file mode 100644
index 0000000000..1b250f6e03
--- /dev/null
+++ b/src/java_tools/singlejar/javatests/com/google/devtools/build/zip/ExtraDataTest.java
@@ -0,0 +1,77 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// Licensed 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 com.google.devtools.build.zip;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public class ExtraDataTest {
+  @Rule public ExpectedException thrown = ExpectedException.none();
+
+  @Test public void testFromData() {
+    short id = (short) 0xcafe;
+    byte[] data = new byte[] { (byte) 0xaa, (byte) 0xbb, (byte) 0xcc };
+    // Contains 1 record: 0xcafe 0x0003 0xaa 0xbb 0xcc in little endian
+    byte[] record = new byte[] { (byte) 0xfe, (byte) 0xca, 0x03, 0x00, (byte) 0xaa, (byte) 0xbb,
+        (byte) 0xcc };
+    ExtraData extra = new ExtraData(id, data);
+    assertThat(extra.getId()).isEqualTo(id);
+    assertThat(extra.getLength()).isEqualTo(record.length);
+    assertThat(extra.getData()).isEqualTo(data);
+    assertThat(extra.getDataLength()).isEqualTo(data.length);
+    assertThat(extra.getBytes()).isEqualTo(record);
+    assertThat(extra.getByte(2)).isEqualTo(record[2]);
+  }
+
+  @Test public void testFromArray() {
+    // Contains 1 record: 0xcafe 0x0004 deadbeef in little endian with 4 bytes padding on the front
+    // and 4 bytes padding on the end
+    byte[] buf = new byte[] { 0x00, 0x11, 0x22, 0x33, (byte) 0xfe, (byte) 0xca, 0x04, 0x00,
+        (byte) 0xde, (byte) 0xad, (byte) 0xbe, (byte) 0xef, (byte) 0xcc, (byte) 0xdd, (byte) 0xee,
+        (byte) 0xff };
+    // record id: cafe
+    short id = (short) 0xcafe;
+    // record payload: deadbeef
+    byte[] data = new byte[] { (byte) 0xde, (byte) 0xad, (byte) 0xbe, (byte) 0xef };
+    // complete record: 0xcafe 0x0004 deadbeef
+    byte[] record = new byte[] { (byte) 0xfe, (byte) 0xca, 0x04, 0x00, (byte) 0xde, (byte) 0xad,
+        (byte) 0xbe, (byte) 0xef };
+    ExtraData extra = new ExtraData(buf, 4);
+    assertThat(extra.getId()).isEqualTo(id);
+    assertThat(extra.getLength()).isEqualTo(record.length);
+    assertThat(extra.getData()).isEqualTo(data);
+    assertThat(extra.getDataLength()).isEqualTo(data.length);
+    assertThat(extra.getBytes()).isEqualTo(record);
+    assertThat(extra.getByte(2)).isEqualTo(record[2]);
+  }
+
+  @Test public void testFromArray_shortHeader() {
+    thrown.expect(IllegalArgumentException.class);
+    thrown.expectMessage("incomplete extra data entry in buffer");
+    new ExtraData(new byte[] { (byte) 0xfe,  (byte) 0xca, 0x01 }, 0);
+  }
+
+  @Test public void testFromArray_shortData() {
+    thrown.expect(IllegalArgumentException.class);
+    thrown.expectMessage("incomplete extra data entry in buffer");
+    new ExtraData(new byte[] { (byte) 0xfe,  (byte) 0xca, 0x03, 0x00, 0x00 }, 0);
+  }
+}