From d07a43ebe8c3b6b1c7dd06fa6ed363b84958bdf3 Mon Sep 17 00:00:00 2001
From: miguel <miguel-silva98@hotmail.com>
Date: Fri, 6 Jan 2023 00:22:42 +0000
Subject: [PATCH] feat(comparator): add subject, test and solution for the
 exercise

---
 sh/tests/comparator_test.sh          | 22 ++++++++++++++++++++++
 sh/tests/solutions/comparator.sh     |  9 +++++++++
 subjects/devops/comparator/README.md | 21 +++++++++++++++++++++
 3 files changed, 52 insertions(+)
 create mode 100755 sh/tests/comparator_test.sh
 create mode 100755 sh/tests/solutions/comparator.sh
 create mode 100644 subjects/devops/comparator/README.md

diff --git a/sh/tests/comparator_test.sh b/sh/tests/comparator_test.sh
new file mode 100755
index 00000000..8f0bb9e6
--- /dev/null
+++ b/sh/tests/comparator_test.sh
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+# Unofficial Bash Strict Mode
+set -euo pipefail
+IFS='
+'
+script_dirS=$(cd -P "$(dirname "$BASH_SOURCE")" &>/dev/null && pwd)
+
+challenge() {
+    submitted=$(bash "$script_dirS"/student/comparator.sh $1 $2)
+    expected=$(bash "$script_dirS"/solutions/comparator.sh $1 $2)
+    diff <(echo "$submitted") <(echo "$expected")
+}
+for i in $(seq 1 10); do
+    n1=$(shuf -i 1-20 -n 1)
+    n2=$(shuf -i 1-30 -n 1)
+    challenge $n1 $n2
+done
+
+challenge "0" "0"
+challenge "10" "10"
+challenge "-11" "-11"
diff --git a/sh/tests/solutions/comparator.sh b/sh/tests/solutions/comparator.sh
new file mode 100755
index 00000000..891748c5
--- /dev/null
+++ b/sh/tests/solutions/comparator.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+if [ "$1" -gt "$2" ]; then
+    echo "$1 > $2"
+elif [ "$1" -lt "$2" ]; then
+    echo "$1 < $2"
+else
+    echo "$1 = $2"
+fi
diff --git a/subjects/devops/comparator/README.md b/subjects/devops/comparator/README.md
new file mode 100644
index 00000000..f4fafab0
--- /dev/null
+++ b/subjects/devops/comparator/README.md
@@ -0,0 +1,21 @@
+## comparator
+
+### Instructions
+
+Create a script `comparator.sh` which will verify if the first given argument is bigger, smaller or equal than the second given argument.
+You must print te output like the example in usage.
+
+### Usage
+
+```console
+$ ./comparator.sh 6 14
+6 < 14
+$ ./comparator.sh 29 3
+29 > 3
+$ ./comparator.sh 12 12
+12 = 12
+$
+```
+
+> You have to use Man or Google to know more about commands flags, in order to solve this exercise!
+> Google and Man will be your friends!