The `goog.testing.fs.Blob` Class

`goog.testing.fs.Blob(opt_data, opt_type)`

A mock Blob object. The data is stored as a string.

opt_data {string=}: The string data encapsulated by the blob.
opt_type {string=}: The mime type of the blob.

`.setDataInternal(data)`

Sets the internal contents of the blob. This should only be called by other functions inside the {@code goog.testing.fs} namespace.

data {string}: The data for this Blob.

`.size` {`number`}

@see: http://www.w3.org/TR/FileAPI/#dfn-size

`.slice(start, length, opt_contentType)`

start {number}: The start byte offset.
length {number}: The number of bytes to slice.
opt_contentType {string=}: The type of the resulting Blob.
returns {!goog.testing.fs.Blob}: The result of the slice operation.
@see: http://www.w3.org/TR/FileAPI/#dfn-slice

`.toArrayBuffer()`

returns {ArrayBuffer}: The string data encapsulated by the blob as an ArrayBuffer.

`.toDataUrl()`

returns {string}: The string data encapsulated by the blob as a data: URI.

`.toString()`

returns {string}: The string data encapsulated by the blob.

`.type` {`string`}

@see: http://www.w3.org/TR/FileAPI/#dfn-type