1 files changed, 65 insertions, 0 deletions
diff --git a/modules/libjar/zipwriter/test/unit/test_sync.js b/modules/libjar/zipwriter/test/unit/test_sync.js
new file mode 100644
index 0000000000..39a27db548
--- /dev/null
+++ b/modules/libjar/zipwriter/test/unit/test_sync.js
@@ -0,0 +1,65 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+// Values taken from using zipinfo to list the test.zip contents
+var TESTS = [
+  {
+    name: "test.txt",
+    size: 232,
+    crc: 0x0373ac26,
+  },
+  {
+    name: "test.png",
+    size: 3402,
+    crc: 0x504a5c30,
+  },
+];
+
+function run_test() {
+  zipW.open(tmpFile, PR_RDWR | PR_CREATE_FILE | PR_TRUNCATE);
+
+  var size = 0;
+  for (let i = 0; i < TESTS.length; i++) {
+    let source = do_get_file(DATA_DIR + TESTS[i].name);
+    zipW.addEntryFile(
+      TESTS[i].name,
+      Ci.nsIZipWriter.COMPRESSION_NONE,
+      source,
+      false
+    );
+    size +=
+      ZIP_FILE_HEADER_SIZE +
+      ZIP_CDS_HEADER_SIZE +
+      ZIP_EXTENDED_TIMESTAMP_SIZE * 2 +
+      TESTS[i].name.length * 2 +
+      TESTS[i].size;
+  }
+
+  zipW.close();
+  size += ZIP_EOCDR_HEADER_SIZE;
+
+  Assert.equal(size, tmpFile.fileSize);
+
+  // Test the stored data with the zipreader
+  var zipR = new ZipReader(tmpFile);
+
+  for (let i = 0; i < TESTS.length; i++) {
+    let source = do_get_file(DATA_DIR + TESTS[i].name);
+    Assert.ok(zipR.hasEntry(TESTS[i].name));
+
+    var entry = zipR.getEntry(TESTS[i].name);
+    Assert.equal(entry.realSize, TESTS[i].size);
+    Assert.equal(entry.size, TESTS[i].size);
+    Assert.equal(entry.CRC32, TESTS[i].crc);
+    Assert.equal(
+      Math.floor(entry.lastModifiedTime / PR_USEC_PER_SEC),
+      Math.floor(source.lastModifiedTime / PR_MSEC_PER_SEC)
+    );
+
+    zipR.test(TESTS[i].name);
+  }
+
+  zipR.close();
+}