1 files changed, 48 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/TestBlob.jsm b/js/xpconnect/tests/unit/TestBlob.jsm
new file mode 100644
index 0000000000..7d67963dd6
--- /dev/null
+++ b/js/xpconnect/tests/unit/TestBlob.jsm
@@ -0,0 +1,48 @@
+/* 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/. */
+
+var EXPORTED_SYMBOLS = ["TestBlob"];
+
+const Assert = {
+  ok(cond, text) {
+    // we don't have the test harness' utilities in this scope, so we need this
+    // little helper. In the failure case, the exception is propagated to the
+    // caller in the main run_test() function, and the test fails.
+    if (!cond)
+      throw "Failed check: " + text;
+  }
+};
+
+var TestBlob = {
+  doTest: function() {
+    // throw if anything goes wrong
+    let testContent = "<a id=\"a\"><b id=\"b\">hey!<\/b><\/a>";
+    // should be able to construct a file
+    var f1 = new Blob([testContent], {"type" : "text/xml"});
+
+    // do some tests
+    Assert.ok(f1 instanceof Blob, "Should be a DOM Blob");
+
+    Assert.ok(!(f1 instanceof File), "Should not be a DOM File");
+
+    Assert.ok(f1.type == "text/xml", "Wrong type");
+
+    Assert.ok(f1.size == testContent.length, "Wrong content size");
+
+    var f2 = new Blob();
+    Assert.ok(f2.size == 0, "Wrong size");
+    Assert.ok(f2.type == "", "Wrong type");
+
+    var threw = false;
+    try {
+      // Needs a valid ctor argument
+      var f2 = new Blob(Date(132131532));
+    } catch (e) {
+      threw = true;
+    }
+    Assert.ok(threw, "Passing a random object should fail");
+
+    return true;
+  },
+};