test(division): add condition to work with one argument

sh/tests/division_test.sh

@@ -8,8 +8,14 @@ IFS='
 script_dirS=$(cd -P "$(dirname "$BASH_SOURCE")" &>/dev/null && pwd)
 
 challenge() {
+    if [ $# -eq 1 ]
+    then
+    submitted=$(bash "$script_dirS"/student/division.sh $1)
+    expected=$(bash "$script_dirS"/solutions/division.sh $1)
+    else
     submitted=$(bash "$script_dirS"/student/division.sh $1 $2)
     expected=$(bash "$script_dirS"/solutions/division.sh $1 $2)
+    fi
 
     diff <(echo "$submitted") <(echo "$expected")
 }

sh/tests/student/division.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+# Check if two arguments were provided
+if [ $# -ne 2 ]
+then
+    echo "Error: two numbers must be provided"
+    exit 1
+fi
+
+# Check if the arguments are numeric
+if ! [[ $1 =~ ^-?[0-9]*\.?[0-9]+$ ]] || ! [[ $2 =~ ^-?[0-9]*\.?[0-9]+$ ]]
+then
+    echo "Error: both arguments must be numeric"
+    exit 1
+fi
+
+# Check if the second argument is not 0
+if [ $(echo "$2 == 0" | bc) -eq 1 ]
+then
+    echo "Error: division by zero is not allowed"
+    exit 1
+fi
+
+# Divide the first argument by the second using bc
+result=$(echo "$1 / $2" | bc )
+
+# Output the result
+echo $result