Merge pull request coremob#52 from facebook/blobbuilder

Adding blobbuilder test.
NOTE: needs much more

tests/blobbuilder/config.yml

@@ -0,0 +1,4 @@
+---
+  r: 1
+  spec: "http://dev.w3.org/2009/dap/file-system/file-writer.html#the-blobbuilder-interface"
+  title: "BlobBuilder"

tests/blobbuilder/test.js

@@ -0,0 +1,39 @@
+test("BlobBuilder", function() {
+  var BlobBuilder = H.API( window, "BlobBuilder", true );
+
+  assert( !!BlobBuilder, "BlobBuilder supported" );
+});
+
+test("BlobBuilder, Blob Slice", function() {
+  var BlobBuilder = H.API( window, "BlobBuilder", true ),
+      value = "Oh Hai!",
+      builder, blob, slice;
+
+  if ( !BlobBuilder ) {
+    assert( false, "BlobBuilder not supported, skipping tests" );
+  } else {
+    blob = (new BlobBuilder()).getBlob();
+    slice = H.API( blob, "slice", true );
+
+    assert( slice, "blob.slice supported (" + slice.name + ")" );
+  }
+});
+
+test("BlobBuilder In Practice", function() {
+  var BlobBuilder = H.API( window, "BlobBuilder", true ),
+      value = "Oh Hai!",
+      builder, blob;
+
+  if ( !BlobBuilder ) {
+    assert( false, "BlobBuilder not supported, skipping tests" );
+  } else {
+    builder = new BlobBuilder();
+    builder.append("Oh Hai!");
+
+    blob = builder.getBlob();
+
+    assert( H.isKindOf( blob, "Blob" ), "getBlob() supported" );
+    assert( blob.size === value.length, "blob.size is correct");
+    assert( "type" in blob, "blob.type supported" );
+  }
+});