1 files changed, 45 insertions, 0 deletions
diff --git a/dom/quota/test/common/file.js b/dom/quota/test/common/file.js
new file mode 100644
index 0000000000..55e2e189fb
--- /dev/null
+++ b/dom/quota/test/common/file.js
@@ -0,0 +1,45 @@
+/**
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+function getBuffer(size) {
+  let buffer = new ArrayBuffer(size);
+  is(buffer.byteLength, size, "Correct byte length");
+  return buffer;
+}
+
+// May be called for any size, but you should call getBuffer() if you know
+// that size is big and that randomness is not necessary because it is
+// noticeably faster.
+function getRandomBuffer(size) {
+  let buffer = getBuffer(size);
+  let view = new Uint8Array(buffer);
+  for (let i = 0; i < size; i++) {
+    view[i] = parseInt(Math.random() * 255);
+  }
+  return buffer;
+}
+
+function compareBuffers(buffer1, buffer2) {
+  if (buffer1.byteLength != buffer2.byteLength) {
+    return false;
+  }
+
+  let view1 = buffer1 instanceof Uint8Array ? buffer1 : new Uint8Array(buffer1);
+  let view2 = buffer2 instanceof Uint8Array ? buffer2 : new Uint8Array(buffer2);
+  for (let i = 0; i < buffer1.byteLength; i++) {
+    if (view1[i] != view2[i]) {
+      return false;
+    }
+  }
+  return true;
+}
+
+function getBlob(type, object) {
+  return new Blob([object], { type });
+}
+
+function getNullBlob(size) {
+  return getBlob("binary/null", getBuffer(size));
+}