Basic tests for CLI

test/cli.js

+var path   = require('path'),
+    assert = require('assert'),
+    fs     = require('fs'),
+    exec   = require('child_process').exec,
+    sass   = require(path.join(__dirname, '..', 'sass')),
+
+    cliPath = path.resolve(__dirname, '..', 'bin', 'node-sass'),
+    sampleFilename = path.resolve(__dirname, 'sample.scss');
+
+
+describe('cli', function() {
+  it('should print help when run with no arguments', function(done) {
+    exec(cliPath, function(err, stdout, stderr) {
+      done(assert(stderr.indexOf('Compile .scss files with node-sass') === 0));
+    });
+  });
+
+  it('should compile sample.scss as sample.css', function(done) {
+    var resultPath = path.join(__dirname, 'sample.css');
+
+    exec(cliPath + ' ' + sampleFilename, {
+      cwd: __dirname
+    }, function(err, stdout, stderr) {
+
+      fs.exists(resultPath, function(exists) {
+        done(assert(exists));
+
+        fs.unlink(resultPath, function() {});
+      });
+    });
+  });
+
+  it('should compile sample.scss to  ../out.css', function(done) {
+    var resultPath = path.resolve(__dirname, '..', 'out.css');
+
+    exec(cliPath + ' ' + sampleFilename + ' ../out.css', {
+      cwd: __dirname
+    }, function(err, stdout, stderr) {
+
+      fs.exists(resultPath, function(exists) {
+        done(assert(exists));
+
+        fs.unlink(resultPath, function() {});
+      });
+    });
+  });
+});