1 files changed, 34 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_cache2-23-read-over-chunk.js b/netwerk/test/unit/test_cache2-23-read-over-chunk.js
new file mode 100644
index 0000000000..89bdb2d963
--- /dev/null
+++ b/netwerk/test/unit/test_cache2-23-read-over-chunk.js
@@ -0,0 +1,34 @@
+"use strict";
+
+function run_test() {
+  do_get_profile();
+
+  const kChunkSize = 256 * 1024;
+
+  var payload = "";
+  for (var i = 0; i < kChunkSize + 10; ++i) {
+    if (i < kChunkSize - 5) {
+      payload += "0";
+    } else {
+      payload += String.fromCharCode(i + 65);
+    }
+  }
+
+  asyncOpenCacheEntry(
+    "http://read/",
+    "disk",
+    Ci.nsICacheStorage.OPEN_TRUNCATE,
+    Services.loadContextInfo.default,
+    new OpenCallback(NEW | WAITFORWRITE, "", payload, function (entry) {
+      var is = entry.openInputStream(0);
+      pumpReadStream(is, function (read) {
+        Assert.equal(read.length, kChunkSize + 10);
+        is.close();
+        Assert.ok(read == payload); // not using do_check_eq since logger will fail for the 1/4MB string
+        finish_cache2_test();
+      });
+    })
+  );
+
+  do_test_pending();
+}