How to check if two files have the same content?

Question

I am using mocha/supertest/should.js to test my Rest Service

GET /files/ returns file as stream.

How can I assert in should.js

Answer 1

You have 3 solutions:

First:

Compare the result strings

tmpBuf.toString() === testBuf.toString();

Second:

Using a loop to read the buffers byte by byte

var index = 0,
    length = tmpBuf.length,
    match = true;

while (index < length) {
    if (tmpBuf[index] === testBuf[index]) {
        index++;
    } else {
        match = false;
        break;
    }
}

match; // true -> contents are the same, false -> otherwise

Third:

Using a third-party module like buffertools and buffertools.compare(buffer, buffer|string) method.