fix/record-collection (#36002)
* 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
Manish Giri
@ -30,20 +30,22 @@ You may refer back to <a href="learn/javascript-algorithms-and-data-structures/b
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```yml
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tests:
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- text: You should not change the <code>collection</code> object's initialization
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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));'
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- text: After <code>updateRecords(5439, "artist", "ABBA")</code>, <code>artist</code> should be <code>"ABBA"</code>
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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>');
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testString: assert(updateRecords(5439, "artist", "ABBA")[5439]["artist"] === "ABBA");
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- 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.
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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.');
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testString: assert(updateRecords(5439, "tracks", "Take a Chance on Me")[5439]["tracks"].pop() === "Take a Chance on Me");
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- text: After <code>updateRecords(2548, "artist", "")</code>, <code>artist</code> should not be set
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testString: updateRecords(2548, "artist", ""); assert(!collection[2548].hasOwnProperty("artist"), 'After <code>updateRecords(2548, "artist", "")</code>, <code>artist</code> should not be set');
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testString: updateRecords(2548, "artist", ""); assert(!collection[2548].hasOwnProperty("artist"));
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- text: After <code>updateRecords(1245, "tracks", "Addicted to Love")</code>, <code>tracks</code> should have <code>"Addicted to Love"</code> as the last element.
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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.');
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testString: assert(updateRecords(1245, "tracks", "Addicted to Love")[1245]["tracks"].pop() === "Addicted to Love");
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- text: After <code>updateRecords(2468, "tracks", "Free")</code>, <code>tracks</code> should have <code>"1999"</code> as the first element.
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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.');
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testString: assert(updateRecords(2468, "tracks", "Free")[2468]["tracks"][0] === "1999");
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- text: After <code>updateRecords(2548, "tracks", "")</code>, <code>tracks</code> should not be set
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testString: updateRecords(2548, "tracks", ""); assert(!collection[2548].hasOwnProperty("tracks"), 'After <code>updateRecords(2548, "tracks", "")</code>, <code>tracks</code> should not be set');
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testString: updateRecords(2548, "tracks", ""); assert(!collection[2548].hasOwnProperty("tracks"));
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- text: After <code>updateRecords(1245, "album", "Riptide")</code>, <code>album</code> should be <code>"Riptide"</code>
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testString: assert(updateRecords(1245, "album", "Riptide")[1245]["album"] === "Riptide", 'After <code>updateRecords(1245, "album", "Riptide")</code>, <code>album</code> should be <code>"Riptide"</code>');
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testString: assert(updateRecords(1245, "album", "Riptide")[1245]["album"] === "Riptide");
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```
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@ -51,38 +53,35 @@ tests:
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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// Setup
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var collection = {
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"2548": {
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"album": "Slippery When Wet",
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"artist": "Bon Jovi",
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"tracks": [
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"Let It Rock",
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"You Give Love a Bad Name"
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]
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},
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"2468": {
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"album": "1999",
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"artist": "Prince",
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"tracks": [
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"1999",
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"Little Red Corvette"
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]
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},
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"1245": {
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"artist": "Robert Palmer",
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"tracks": [ ]
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},
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"5439": {
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"album": "ABBA Gold"
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}
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2548: {
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album: "Slippery When Wet",
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artist: "Bon Jovi",
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tracks: [
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"Let It Rock",
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"You Give Love a Bad Name"
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]
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},
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2468: {
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album: "1999",
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artist: "Prince",
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tracks: [
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"1999",
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"Little Red Corvette"
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]
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},
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1245: {
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artist: "Robert Palmer",
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tracks: [ ]
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},
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5439: {
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album: "ABBA Gold"
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}
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};
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// Keep a copy of the collection for tests
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var collectionCopy = JSON.parse(JSON.stringify(collection));
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// Only change code below this line
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function updateRecords(id, prop, value) {
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@ -97,51 +96,37 @@ updateRecords(5439, "artist", "ABBA");
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```
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</div>
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### After Test
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<div id='js-teardown'>
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```js
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;(function(x) { return "collection = \n" + JSON.stringify(x, '\n', 2); })(collection);
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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var collection = {
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2548: {
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album: "Slippery When Wet",
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artist: "Bon Jovi",
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tracks: [
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"Let It Rock",
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"You Give Love a Bad Name"
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]
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},
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2468: {
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album: "1999",
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artist: "Prince",
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tracks: [
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"1999",
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"Little Red Corvette"
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]
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},
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1245: {
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artist: "Robert Palmer",
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tracks: [ ]
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},
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5439: {
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album: "ABBA Gold"
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}
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2548: {
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album: "Slippery When Wet",
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artist: "Bon Jovi",
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tracks: [
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"Let It Rock",
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"You Give Love a Bad Name"
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]
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},
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2468: {
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album: "1999",
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artist: "Prince",
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tracks: [
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"1999",
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"Little Red Corvette"
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]
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},
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1245: {
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artist: "Robert Palmer",
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tracks: [ ]
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},
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5439: {
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album: "ABBA Gold"
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}
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};
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// Keep a copy of the collection for tests
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var collectionCopy = JSON.parse(JSON.stringify(collection));
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// Only change code below this line
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function updateRecords(id, prop, value) {
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