1 files changed, 172 insertions, 0 deletions
diff --git a/src/java_tools/singlejar/javatests/com/google/devtools/build/zip/ZipUtilTest.java b/src/java_tools/singlejar/javatests/com/google/devtools/build/zip/ZipUtilTest.java
new file mode 100644
index 0000000000..60f2b732c7
--- /dev/null
+++ b/src/java_tools/singlejar/javatests/com/google/devtools/build/zip/ZipUtilTest.java
@@ -0,0 +1,172 @@
+// 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;
+
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+
+@RunWith(JUnit4.class)
+public class ZipUtilTest {
+  @Rule public ExpectedException thrown = ExpectedException.none();
+
+  @Test public void testShortToLittleEndian() {
+    byte[] bytes = ZipUtil.shortToLittleEndian((short) 4660);
+    assertThat(bytes).isEqualTo(new byte[]{ 0x34, 0x12 });
+  }
+
+  @Test public void testShortToLittleEndian_Signed() {
+    byte[] bytes = ZipUtil.shortToLittleEndian((short) -3532);
+    assertThat(bytes).isEqualTo(new byte[]{ 0x34, (byte) 0xf2 });
+  }
+
+  @Test public void testIntToLittleEndian() {
+    byte[] bytes = ZipUtil.intToLittleEndian(305419896);
+    assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, 0x12 });
+  }
+
+  @Test public void testIntToLittleEndian_Signed() {
+    byte[] bytes = ZipUtil.intToLittleEndian(-231451016);
+    assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, (byte) 0xf2 });
+  }
+
+  @Test public void testLongToLittleEndian() {
+    byte[] bytes = ZipUtil.longToLittleEndian(305419896);
+    assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, 0x12, 0x0, 0x0, 0x0, 0x0 });
+  }
+
+  @Test public void testLongToLittleEndian_Signed() {
+    byte[] bytes = ZipUtil.longToLittleEndian(-231451016);
+    assertThat(bytes).isEqualTo(new byte[]{ 0x78, 0x56, 0x34, (byte) 0xf2,
+        (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff });
+  }
+
+  @Test public void testGet16() {
+    short result = ZipUtil.get16(new byte[]{ 0x34, 0x12 }, 0);
+    assertThat(result).isEqualTo((short) 0x1234);
+    assertThat(result).isEqualTo((short) 4660);
+  }
+
+  @Test public void testGet16_Signed() {
+    short result = ZipUtil.get16(new byte[]{ 0x34, (byte) 0xff }, 0);
+    assertThat(result).isEqualTo((short) 0xff34);
+    assertThat(result).isEqualTo((short) -204);
+  }
+
+  @Test public void testGet32() {
+    int result = ZipUtil.get32(new byte[]{ 0x78, 0x56, 0x34, 0x12 }, 0);
+    assertThat(result).isEqualTo(0x12345678);
+    assertThat(result).isEqualTo(305419896);
+  }
+
+  @Test public void testGet32_Short() {
+    int result = ZipUtil.get32(new byte[]{ 0x34, (byte) 0xff, 0x0, 0x0 }, 0);
+    assertThat(result).isEqualTo(0xff34);
+    assertThat(result).isEqualTo(65332);
+  }
+
+  @Test public void testGet32_Signed() {
+    int result = ZipUtil.get32(new byte[]{ 0x34, (byte) 0xff, (byte) 0xff, (byte) 0xff }, 0);
+    assertThat(result).isEqualTo(0xffffff34);
+    assertThat(result).isEqualTo(-204);
+  }
+
+  @Test public void testGetUnsignedShort() {
+    int result = ZipUtil.getUnsignedShort(new byte[]{ 0x34, 0x12 }, 0);
+    assertThat(result).isEqualTo(0x1234);
+    assertThat(result).isEqualTo(4660);
+  }
+
+  @Test public void testGetUnsignedShort_Big() {
+    int result = ZipUtil.getUnsignedShort(new byte[]{ 0x34, (byte) 0xff }, 0);
+    assertThat(result).isEqualTo(0xff34);
+    assertThat(result).isEqualTo(65332);
+  }
+
+  @Test public void testGetUnsignedInt() {
+    long result = ZipUtil.getUnsignedInt(new byte[]{ 0x34, 0x12, 0x0, 0x0 }, 0);
+    assertThat(result).isEqualTo(0x1234);
+    assertThat(result).isEqualTo(4660);
+  }
+
+  @Test public void testGetUnsignedInt_Big() {
+    long result = ZipUtil.getUnsignedInt(
+        new byte[]{ 0x34, (byte) 0xff, (byte) 0xff, (byte) 0xff }, 0);
+    assertThat(result).isEqualTo(0xffffff34L);
+    assertThat(result).isEqualTo(4294967092L);
+  }
+
+  @Test public void testTimeConversion_DosToUnix() {
+    int dos = (20 << 25) | (2 << 21) | (14 << 16) | (3 << 11) | (7 << 5) | (15 >> 1);
+
+    Calendar time = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 14);
+    long expectedUnixTime = time.getTimeInMillis();
+    assertThat(ZipUtil.dosToUnixTime(dos)).isEqualTo(expectedUnixTime);
+  }
+
+  @Test public void testTimeConversion_UnixToDos() {
+    Calendar time = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 14);
+    long unix = time.getTimeInMillis();
+    int expectedDosTime = (20 << 25) | (2 << 21) | (14 << 16) | (3 << 11) | (7 << 5) | (15 >> 1);
+    assertThat(ZipUtil.unixToDosTime(unix)).isEqualTo(expectedDosTime);
+  }
+
+  @Test public void testTimeConversion_UnixToDos_LowBound() {
+    Calendar time = Calendar.getInstance();
+    time.setTimeInMillis(ZipUtil.DOS_EPOCH);
+    time.add(Calendar.SECOND, -1);
+    thrown.expect(IllegalArgumentException.class);
+    ZipUtil.unixToDosTime(time.getTimeInMillis());
+  }
+
+  @Test public void testTimeConversion_UnixToDos_HighBound_Rounding() {
+    Calendar time = Calendar.getInstance();
+    time.setTimeInMillis(ZipUtil.MAX_DOS_DATE);
+    ZipUtil.unixToDosTime(time.getTimeInMillis());
+  }
+
+  @Test public void testTimeConversion_UnixToDos_HighBound() {
+    Calendar time = Calendar.getInstance();
+    time.setTimeInMillis(ZipUtil.MAX_DOS_DATE);
+    time.add(Calendar.SECOND, 1);
+    thrown.expect(IllegalArgumentException.class);
+    ZipUtil.unixToDosTime(time.getTimeInMillis());
+  }
+
+  @Test public void testTimeConversion_UnixToUnix() {
+    Calendar from = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 15);
+    Calendar to = new GregorianCalendar(2000, Calendar.FEBRUARY, 14, 3, 7, 14);
+    assertThat(ZipUtil.dosToUnixTime(ZipUtil.unixToDosTime(from.getTimeInMillis())))
+        .isEqualTo(to.getTimeInMillis());
+  }
+
+  @Test public void testTimeConversion_DosToDos() {
+    int dos = (20 << 25) | (2 << 21) | (14 << 16) | (3 << 11) | (7 << 5) | (15 >> 1);
+    assertThat(ZipUtil.unixToDosTime(ZipUtil.dosToUnixTime(dos))).isEqualTo(dos);
+  }
+
+  @Test public void testTimeConversion_DosToDos_Zero() {
+    int dos = 0;
+    thrown.expect(IllegalArgumentException.class);
+    assertThat(ZipUtil.unixToDosTime(ZipUtil.dosToUnixTime(dos))).isEqualTo(0);
+  }
+}