Parameterized jasmine test for your logax parser. https://github.com/jesslilly/logax. This is a really good idea to make sure that minor changes to your parser don't break your JSON output. Thanks to https://gist.github.com/basti1302/5051200 for the parameterized test gist. This test is in javascript, not coffeescript. This is a template. You wi…

logaxParserSpec.js

var fs = require('fs');
var exec = require('child_process').exec, child;

// Inputs
var inputDir = './developer/test/unit/data/input/';
var expectedDir = './developer/test/unit/data/expected/';
var outputDir = './developer/test/unit/data/output/';
var parserA = './server/load-it/logax-a-parser.js';
var parserB = './server/load-it/logax-b-parser.js';
var inputFiles = new Array(3);
// These are the files to test.
inputFiles.push({
	file : 'file1',
	parser : parserA
});
inputFiles.push({
	file : 'file2',
	parser : parserA
});
inputFiles.push({
	file : 'file3',
	parser : parserB
});

// Declare a parameterized test (keepin it DRY baby)
jsonDiff = function(inputFile, parser) {
	describe('logax parse of ' + inputFile, function() {
		var asyncFinished = false;
		var fileData = "";

		var cmd = "";
		cmd += "gunzip " + inputDir + inputFile + ".gz";
		cmd += "; ";
		cmd += "$(npm bin)/logax --parserFile " + parser + " ";
		cmd += "--input " + inputDir + inputFile + " ";
		cmd += "--outputDir " + outputDir;
		cmd += " > " + outputDir + inputFile + '.log 2>&1';
		cmd += "; ";
		cmd += "gzip " + inputDir + inputFile + "; "

		child = exec(cmd, function(error, stdout, stderr) {
			if (error) {
				console.info(error);
			}
			asyncFinished = true;
		});

		it('should create expected json.', function() {
			waitsFor(function() {
				return asyncFinished;
			}, "logax.js never completed.  Check for missing callback.", 10000);

			runs(function() {
				var expectedArray = JSON.parse(fs.readFileSync(expectedDir + inputFile + ".json"));
				expectedArray.forEach(function(row) {
					delete row.createdAt;
					delete row.updatedAt;
				});
				var outputArray = JSON.parse(fs.readFileSync(outputDir + inputFile + ".json"));
				outputArray.forEach(function(row) {
					delete row.createdAt;
					delete row.updatedAt;
				});
				// expect(expectedArray).toEqual(outputArray);
				expect(expectedArray.length).toEqual(outputArray.length);

				expectedArray.forEach(function(expectedObj, idx) {
					var outputObj = outputArray[idx];
					var expectedKeys = Object.keys(expectedObj);
					var outputKeys = Object.keys(outputObj);
					expect(expectedKeys.sort()).toEqual(outputKeys.sort());
					expectedKeys.forEach(function(row) {
						var label = "arr[" + idx + "][" + row + "]=";
						expect(label + expectedObj[row]).toEqual(label + outputObj[row]);
					});
				});
			});
		});
	});
};

// Run all inputs against the parameterized tests.
inputFiles.forEach(function(row, idx) {
	jsonDiff(row.file, row.parser);
});