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fix/record-collection (#36002)

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* fix/record-collection

* fix/remove-old-assert-messages

* fix/attempt-to-fix-build-error

* fix/attempt-to-fix-build-error

* fix/change-verbiage-and-tidy-up

* fix/remove-brackets-in-regex
This commit is contained in:
Tom
2019-05-12 22:45:18 -05:00
committed by Manish Giri
parent 17d5b64553
commit fc547999fd
1 changed files with 55 additions and 70 deletions
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125
curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/record-collection.english.md
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@ -30,20 +30,22 @@ You may refer back to <a href="learn/javascript-algorithms-and-data-structures/b
```yml ```yml
tests: tests:
- text: You should not change the <code>collection</code> object's initialization
testString: 'assert(code.match(/var collection = {\s*2548: {\s*album: "Slippery When Wet",\s*artist: "Bon Jovi",\s*tracks: \[\s*"Let It Rock",\s*"You Give Love a Bad Name"\s*\]\s*},\s*2468: {\s*album: "1999",\s*artist: "Prince",\s*tracks: \[\s*"1999",\s*"Little Red Corvette"\s*\]\s*},\s*1245: {\s*artist: "Robert Palmer",\s*tracks: \[ \]\s*},\s*5439: {\s*album: "ABBA Gold"\s*}\s*};/g));'
- text: After <code>updateRecords(5439, "artist", "ABBA")</code>, <code>artist</code> should be <code>"ABBA"</code> - text: After <code>updateRecords(5439, "artist", "ABBA")</code>, <code>artist</code> should be <code>"ABBA"</code>
testString: collection = collectionCopy; assert(updateRecords(5439, "artist", "ABBA")[5439]["artist"] === "ABBA", 'After <code>updateRecords(5439, "artist", "ABBA")</code>, <code>artist</code> should be <code>"ABBA"</code>'); testString: assert(updateRecords(5439, "artist", "ABBA")[5439]["artist"] === "ABBA");
- text: After <code>updateRecords(5439, "tracks", "Take a Chance on Me")</code>, <code>tracks</code> should have <code>"Take a Chance on Me"</code> as the last element. - text: After <code>updateRecords(5439, "tracks", "Take a Chance on Me")</code>, <code>tracks</code> should have <code>"Take a Chance on Me"</code> as the last element.
testString: assert(updateRecords(5439, "tracks", "Take a Chance on Me")[5439]["tracks"].pop() === "Take a Chance on Me", 'After <code>updateRecords(5439, "tracks", "Take a Chance on Me")</code>, <code>tracks</code> should have <code>"Take a Chance on Me"</code> as the last element.'); testString: assert(updateRecords(5439, "tracks", "Take a Chance on Me")[5439]["tracks"].pop() === "Take a Chance on Me");
- text: After <code>updateRecords(2548, "artist", "")</code>, <code>artist</code> should not be set - text: After <code>updateRecords(2548, "artist", "")</code>, <code>artist</code> should not be set
testString: updateRecords(2548, "artist", ""); assert(!collection[2548].hasOwnProperty("artist"), 'After <code>updateRecords(2548, "artist", "")</code>, <code>artist</code> should not be set'); testString: updateRecords(2548, "artist", ""); assert(!collection[2548].hasOwnProperty("artist"));
- text: After <code>updateRecords(1245, "tracks", "Addicted to Love")</code>, <code>tracks</code> should have <code>"Addicted to Love"</code> as the last element. - text: After <code>updateRecords(1245, "tracks", "Addicted to Love")</code>, <code>tracks</code> should have <code>"Addicted to Love"</code> as the last element.
testString: assert(updateRecords(1245, "tracks", "Addicted to Love")[1245]["tracks"].pop() === "Addicted to Love", 'After <code>updateRecords(1245, "tracks", "Addicted to Love")</code>, <code>tracks</code> should have <code>"Addicted to Love"</code> as the last element.'); testString: assert(updateRecords(1245, "tracks", "Addicted to Love")[1245]["tracks"].pop() === "Addicted to Love");
- text: After <code>updateRecords(2468, "tracks", "Free")</code>, <code>tracks</code> should have <code>"1999"</code> as the first element. - text: After <code>updateRecords(2468, "tracks", "Free")</code>, <code>tracks</code> should have <code>"1999"</code> as the first element.
testString: assert(updateRecords(2468, "tracks", "Free")[2468]["tracks"][0] === "1999", 'After <code>updateRecords(2468, "tracks", "Free")</code>, <code>tracks</code> should have <code>"1999"</code> as the first element.'); testString: assert(updateRecords(2468, "tracks", "Free")[2468]["tracks"][0] === "1999");
- text: After <code>updateRecords(2548, "tracks", "")</code>, <code>tracks</code> should not be set - text: After <code>updateRecords(2548, "tracks", "")</code>, <code>tracks</code> should not be set
testString: updateRecords(2548, "tracks", ""); assert(!collection[2548].hasOwnProperty("tracks"), 'After <code>updateRecords(2548, "tracks", "")</code>, <code>tracks</code> should not be set'); testString: updateRecords(2548, "tracks", ""); assert(!collection[2548].hasOwnProperty("tracks"));
- text: After <code>updateRecords(1245, "album", "Riptide")</code>, <code>album</code> should be <code>"Riptide"</code> - text: After <code>updateRecords(1245, "album", "Riptide")</code>, <code>album</code> should be <code>"Riptide"</code>
testString: assert(updateRecords(1245, "album", "Riptide")[1245]["album"] === "Riptide", 'After <code>updateRecords(1245, "album", "Riptide")</code>, <code>album</code> should be <code>"Riptide"</code>'); testString: assert(updateRecords(1245, "album", "Riptide")[1245]["album"] === "Riptide");
``` ```
@ -51,38 +53,35 @@ tests:
## Challenge Seed ## Challenge Seed
<section id='challengeSeed'> <section id='challengeSeed'>
<div id='js-seed'> <div id='js-seed'>
```js ```js
// Setup // Setup
var collection = { var collection = {
"2548": { 2548: {
"album": "Slippery When Wet", album: "Slippery When Wet",
"artist": "Bon Jovi", artist: "Bon Jovi",
"tracks": [ tracks: [
"Let It Rock", "Let It Rock",
"You Give Love a Bad Name" "You Give Love a Bad Name"
] ]
}, },
"2468": { 2468: {
"album": "1999", album: "1999",
"artist": "Prince", artist: "Prince",
"tracks": [ tracks: [
"1999", "1999",
"Little Red Corvette" "Little Red Corvette"
] ]
}, },
"1245": { 1245: {
"artist": "Robert Palmer", artist: "Robert Palmer",
"tracks": [ ] tracks: [ ]
}, },
"5439": { 5439: {
"album": "ABBA Gold" album: "ABBA Gold"
} }
}; };
// Keep a copy of the collection for tests
var collectionCopy = JSON.parse(JSON.stringify(collection));
// Only change code below this line // Only change code below this line
function updateRecords(id, prop, value) { function updateRecords(id, prop, value) {
@ -97,51 +96,37 @@ updateRecords(5439, "artist", "ABBA");
``` ```
</div> </div>
### After Test
<div id='js-teardown'>
```js
;(function(x) { return "collection = \n" + JSON.stringify(x, '\n', 2); })(collection);
```
</div>
</section> </section>
## Solution ## Solution
<section id='solution'> <section id='solution'>
```js ```js
var collection = { var collection = {
2548: { 2548: {
album: "Slippery When Wet", album: "Slippery When Wet",
artist: "Bon Jovi", artist: "Bon Jovi",
tracks: [ tracks: [
"Let It Rock", "Let It Rock",
"You Give Love a Bad Name" "You Give Love a Bad Name"
] ]
}, },
2468: { 2468: {
album: "1999", album: "1999",
artist: "Prince", artist: "Prince",
tracks: [ tracks: [
"1999", "1999",
"Little Red Corvette" "Little Red Corvette"
] ]
}, },
1245: { 1245: {
artist: "Robert Palmer", artist: "Robert Palmer",
tracks: [ ] tracks: [ ]
}, },
5439: { 5439: {
album: "ABBA Gold" album: "ABBA Gold"
} }
}; };
// Keep a copy of the collection for tests
var collectionCopy = JSON.parse(JSON.stringify(collection));
// Only change code below this line // Only change code below this line
function updateRecords(id, prop, value) { function updateRecords(id, prop, value) {