1 files changed, 41 insertions, 0 deletions
diff --git a/toolkit/components/lz4/tests/xpcshell/test_lz4_sync.js b/toolkit/components/lz4/tests/xpcshell/test_lz4_sync.js
new file mode 100644
index 0000000000..531da8a966
--- /dev/null
+++ b/toolkit/components/lz4/tests/xpcshell/test_lz4_sync.js
@@ -0,0 +1,41 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const { Lz4 } = ChromeUtils.import("resource://gre/modules/lz4.js");
+const { OS } = ChromeUtils.import("resource://gre/modules/osfile.jsm");
+
+function compare_arrays(a, b) {
+  return Array.prototype.join.call(a) == Array.prototype.join.call(b);
+}
+
+add_task(async function() {
+  let path = OS.Path.join("data", "compression.lz");
+  let data = await OS.File.read(path);
+  let decompressed = Lz4.decompressFileContent(data);
+  let text = new TextDecoder().decode(decompressed);
+  Assert.equal(text, "Hello, lz4");
+});
+
+add_task(async function() {
+  for (let length of [0, 1, 1024]) {
+    let array = new Uint8Array(length);
+    for (let i = 0; i < length; ++i) {
+      array[i] = i % 256;
+    }
+
+    let compressed = Lz4.compressFileContent(array);
+    info(
+      "Compressed " + array.byteLength + " bytes into " + compressed.byteLength
+    );
+
+    let decompressed = Lz4.decompressFileContent(compressed);
+    info(
+      "Decompressed " +
+        compressed.byteLength +
+        " bytes into " +
+        decompressed.byteLength
+    );
+
+    Assert.ok(compare_arrays(array, decompressed));
+  }
+});