From 026764535e1d43f5ad01b5a00e4b204f31e32a7e Mon Sep 17 00:00:00 2001
From: nprimo <primo.niccolo@gmail.com>
Date: Tue, 28 Feb 2023 15:32:08 +0100
Subject: [PATCH] feat(kept-promise): add subject

---
 js/tests/kept-promise_test.js          |  6 +++
 subjects/devops/kept-promise/README.md | 52 ++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 js/tests/kept-promise_test.js
 create mode 100644 subjects/devops/kept-promise/README.md

diff --git a/js/tests/kept-promise_test.js b/js/tests/kept-promise_test.js
new file mode 100644
index 000000000..dd35de170
--- /dev/null
+++ b/js/tests/kept-promise_test.js
@@ -0,0 +1,6 @@
+import keptPromise 
+
+const getImportantInfo = _ =>
+  new Promise(resolve => {
+    setTimeout(_ => resolve(Math.round(Math.random() * 10)), 1000)
+  })
diff --git a/subjects/devops/kept-promise/README.md b/subjects/devops/kept-promise/README.md
new file mode 100644
index 000000000..1481ea0b1
--- /dev/null
+++ b/subjects/devops/kept-promise/README.md
@@ -0,0 +1,52 @@
+## kept-promise
+
+### Instructions
+
+Thing in your code does not always happen as fast as you would like.
+
+Sometimes it is important to wait for a function to finish before keep going on with your life.
+
+Create an asynchronous function `processInfo` in the file `kept-promise.js`. The function `processInfo` will take an asynchronous function as an input, and it will print the message `Ok!` if the return of the input function is zero or a multiple of two, `Error!` otherwise.
+
+The following function can be used as an example of input function for `processInfo`:
+
+```js
+const getImportantInfo = _ =>
+  new Promise(resolve => {
+    setTimeout(() => resolve(Math.round(Math.random() * 10)), 1000)
+  })
+```
+
+> Assume that your function will always get a valid input function 
+
+### Example
+
+The following script `main.js` can be used to test your function:
+
+```js
+import processInfo from './kept-promise.js'
+
+const getImportantInfo = _ =>
+  new Promise(resolve => {
+    setTimeout(() => resolve(Math.round(Math.random() * 10)), 1000)
+  })
+
+console.log(await processInfo(getImportantInfo))
+```
+
+The output should be the following:
+
+```console
+$  node main.js
+Ok!
+$  node main.js
+Error!
+$  node main.js
+Ok!
+$
+```
+
+### Notions
+
+- [Using promises](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises)
+- [async function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function)