add quotes.random_by_tag function in JavaScript Land #4

dwyl · Oct 17, 2019 · d78b7c2 · d78b7c2
1 parent 0d1b180
commit d78b7c2
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Showing 2 changed files with 23 additions and 1 deletion.
diff --git a/lib/index.js b/lib/index.js
@@ -15,9 +15,22 @@ function random () {
   return quotes[Math.floor(Math.random() * quotes.length)];
 }
 
+/**
+ * `random_by_tag` returns a random quote for a specific tag
+ * returns Object - a random quote from the list with the desired tag
+ */
+function random_by_tag (tag) {
+  const q_by_tag = quotes.filter((q) => {
+    return q.text.includes(tag) || (q.tags && q.tags.includes(tag))
+  })
+  return q_by_tag[Math.floor(Math.random() * q_by_tag.length)];
+}
+
+
 
 
 module.exports = {
   parse_json: parse_json,
-  random: random
+  random: random,
+  random_by_tag: random_by_tag
 };
diff --git a/test/index.test.js b/test/index.test.js
@@ -36,3 +36,12 @@ test('quotes.random returns a random quote object', function (t) {
   t.ok(Object.keys(random_quotes_list).length < 200);
   t.end();
 });
+
+test('quotes.random_by_tag returns a random quote object by tag', function (t) {
+  const tag = "time";
+  const q = quotes.random_by_tag(tag);
+  // check that the quote returned contains the tag in either text or tags:
+  const truthy = q.text.includes(tag) || q.tags && q.tags.includes(tag);
+  t.ok(truthy);
+  t.end();
+});