load context

Author: ShMcK

coderoad.json

@@ -10,7 +10,7 @@
         {
           "title": "Filter",
           "description": "Array -> Array of items that match a condition",
-          "explanation": "You've hacked into the school's computer system, and just in time. The grades are in, aren't you're not too proud of your performance. But that's okay, you have a plan: you're going to create a fake report card.\n\nIt would be great if you could `filter` the scores that your parents will see. A `filter` takes a matching condition function and only returns items that result in true. As an example, look at `isB` below:\n\n```\nfunction isB(x) {\n  return x === 'b';\n}\n```\n\nLike all of the methods in this chapter, `filter` is already part of the `Array.prototype`, so you can run it after any array. Each item is passed into the params of the condition function, one by one.\n\n```\nvar list = ['a', 'b', 'c'];\nlist.filter(isB);\n//> ['b']\n```\n\nThere's too much student data in the computer system. We'll have to sort through it. Have a look at an example below:\n\n```\nconsole.log(studentData[0]);\n//> { course: 'Web Security',\n//    instructor: 'Sue Denim',\n//    name: 'Rebecca Heineman',\n//    score: 93,\n//    grade: 'A' }\n```",
+          "explanation": "You've hacked into the school's computer system, and just in time. The grades are in, aren't you're not too proud of your performance. But that's okay, you have a plan: you're going to create a fake report card.\n\nIt would be great if you could `filter` the scores that your parents will see. A `filter` takes a matching condition function and only returns items that result in true. As an example, look at `isB` below:\n\n```\nfunction isB(x) {\n  return x === 'b';\n}\n```\n\n\nLike all of the methods in this chapter, `filter` is already part of the `Array.prototype`, so you can run it after any array. Each item is passed into the params of the condition function, one by one.\n\n```\nvar list = ['a', 'b', 'c'];\nlist.filter(isB);\n//> ['b']\n```\n\n\nThere's too much student data in the computer system. We'll have to sort through it. Have a look at an example below:\n\n```\nconsole.log(studentData[0]);\n//> { course: 'Web Security',\n//    instructor: 'Sue Denim',\n//    name: 'Rebecca Heineman',\n//    score: 93,\n//    grade: 'A' }\n```",
           "tasks": [
             {
               "description": "Write a filter condition function called `isAda` that returns true if param.`name` is true",
@@ -28,7 +28,7 @@
                 "1/01/02-filter"
               ],
               "actions": [
-                "insert('var data = require('./tutorial/data/students')(require('./tutorial/data/courses.json')).slice(0);\n')",
+                "insert('// load data\nvar data = require('./node_modules/coderoad-functional-school/tutorial/data/students').slice(0);\n')",
                 "insert('var myData = data.filter // call filter condition here\n')"
               ]
             },

tutorial/1/01/01-filter.spec.js

@@ -1,8 +1,9 @@
 var expect = require('chai').expect;
-// loads file context to allow globals
-var context = require('test-context');
-var filePath = '../../../../../01-filter.js';
-context(filePath);
+var path = require('path');
+var loadContext = require('../../common/loadContext');
+var filePath = path.join(process.env.DIR, '01-filter.js');
+loadContext(filePath);
+
 
 describe('isAda', function() {
 

tutorial/1/01/02-filter.spec.js

@@ -1,7 +1,8 @@
 var expect = require('chai').expect;
-var context = require('test-context');
-var filePath = '../../../../../01-filter.js';
-context(filePath);
+var path = require('path');
+var loadContext = require('../../common/loadContext');
+var filePath = path.join(process.env.DIR, '01-filter.js');
+loadContext(filePath);
 
 describe('var myData', function() {
 

tutorial/1/01/03-filter.spec.js

@@ -1,6 +1,8 @@
 var expect = require('chai').expect;
-var context = require('test-context');
-context('../../../../../01-filter.js');
+var path = require('path');
+var loadContext = require('../../common/loadContext');
+var filePath = path.join(process.env.DIR, '01-filter.js');
+loadContext(filePath);
 
 describe('var myBest', function() {
 

tutorial/1/01/filter.md

@@ -47,7 +47,8 @@ function isAda(x) {
 @test('1/01/02-filter')
 @action(insert(
 ```
-var data = require('./tutorial/data/students')(require('./tutorial/data/courses.json')).slice(0);
+// load data
+var data = require('./node_modules/coderoad-functional-school/tutorial/lib/students').slice(0);
 ```))
 @action(insert(
 ```

tutorial/common/loadContext.js

@@ -0,0 +1,6 @@
+var vm = require('vm');
+var fs = require('fs');
+module.exports = function loadContext(pathToContext) {
+  var context = fs.readFileSync(pathToContext, 'utf8');
+  vm.runInThisContext(context);
+};

tutorial/data/students.js

@@ -1,6 +1,9 @@
+var courses = require('./courses.json');
 require('../common/array');
 
-module.exports = function(courses) {
+module.exports = getStudentsInCourses();
+
+function getStudentsInCourses() {
   return courses.map(function(course) {
     return course.students.map(function(student) {
       return {

tutorial/data/students2.js

@@ -0,0 +1,18 @@
+var courses = require('./courses2.json');
+require('../common/array');
+
+module.exports = getStudentsInCourses();
+
+function getStudentsInCourses() {
+  return courses.map(function(course) {
+    return course.students.map(function(student) {
+      return {
+        course: course.course,
+        instructor: course.instructor,
+        name: student.name,
+        score: student.score,
+        grade: student.grade
+      };
+    })
+  }).concatAll();
+}