Lab-Dana

index.js

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+'use strict';
+
+const welcome = require('./lib/howdy.js');
+
+if (process.argv.length < 3) throw new Error('please enter a name!');
+
+if (process.argv.length === 3) welcome.greeting(process.argv[2]);
+
+if (process.argv.length > 3) welcome.multipleGreetings(process.argv);

lib/howdy.js

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+'use strict';
+
+module.exports = exports = {};
+
+exports.greeting = function(name) {
+  if (arguments.length === 0) throw new Error('no name given');
+  console.log(`What's up, ${name}?!`);
+  return `hello ${name}`;
+};
+
+exports.multipleGreetings = function(termInput) {
+  let names = termInput.slice(2);
+  let logMessage = " ";
+  logMessage += names.slice(0, -1).join(', ');
+  logMessage += (' and ');
+  logMessage += names.slice(-1).join('');
+  logMessage += ('!');
+  console.log(`Hey there ${logMessage}`);
+  return `Hey there ${logMessage}`;
+};

test/howdy-test.js

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+'use strict';
+
+const assert = require('assert');
+const howdy = require('../lib/howdy.js');
+// const hackyMessageVariable = howdy.multipleGreetings.logMessage;
+// console.log(hackyMessageVariable);
+
+describe('Howdy Module', function() {
+  describe('#greeting', function() {
+    it(`should return hello ${process.argv[2]}`, function() {
+      let printout = howdy.greeting(process.argv[2]);
+      assert.ok(printout === `hello ${process.argv[2]}`, 'incorrect result');
+    });
+  });
+  describe('#greeting', function() {
+    it('Should result in error from missing input', function() {
+      assert.throws(function() {
+        howdy.greeting();
+      }, 'Error not thrown for empty input');
+    });
+  });
+  describe('#multipleGreetings', function() {
+    it(`should return all names entered in command line`, function() {
+      let printout = howdy.multipleGreetings(process.argv);
+      assert.ok(printout === `Hey there ${hackyMessageVariable}`, 'not quite right');
+    });
+  });
+});