test.ts

/// <reference path="./lib/node-0.11.d.ts" />
/// <reference path="./lib/nodeunit.d.ts" />


import child_process = require('child_process');
import fs = require('fs');
import nodeunit = require('nodeunit');


// the first line of the output contains the date, so we can't compare it safely
function removeFirstLine(s: string):string {
    var i = s.indexOf('\n');
    return s.substring(i + 1);
}


exports.testGenerator = function(test: nodeunit.Test):void {
    test.expect(1);

    child_process.exec(
        'tsc --module commonjs generator.ts && node generator.js ./test-data/jsduck ./test-data/actual-output.d.ts',
        function(error, stdout, stderr) {

            if (error !== null) {
                console.error('Error calling generator: ' + stderr);
            }

            var actual = removeFirstLine(fs.readFileSync('./test-data/actual-output.d.ts', 'utf8')),
                expected = removeFirstLine(fs.readFileSync('./test-data/expected-output.d.ts', 'utf8'));

            // don't delete the output when it is wrong - we might need to inspect it
            if (actual === expected) {
                fs.unlinkSync('./test-data/actual-output.d.ts');
            }

            test.equal(actual, expected);
            test.done();
        }
    );
};