fix: create log file if doesn't exist

src/run-cron

@@ -12,8 +12,14 @@ test_env=$(get_env "TEST_ENV" false)
 
 echo "$cron_time backup >> /var/log/backup.log" > /etc/crontabs/root
 
-if [ "$test_env" = false ]; then
-    echo "Launching cron service..."
-    tail -F /var/log/backup.log &
-    exec crond -f -L /var/log/cron.log
+echo "Launching cron service..."
+
+if [ ! -f "/var/log/backup.log" ]; then
+    touch /var/log/backup.log
+fi
+
+if [ "$test_env" = true ]; then
+    timeout 1 run-cron-service
+else
+    run-cron-service
 fi

src/run-cron-service

@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+tail -F /var/log/backup.log &
+exec crond -f -L /var/log/cron.log

test/functional/run_cron.bats

@@ -1,8 +1,17 @@
+@test "run-cron command runs without error" {
+    export TEST_ENV=true
+
+    run run-cron
+    [ "$status" -eq 124 ]
+    [ "${lines[0]}" = "Launching cron service..." ]
+    [ "${#lines[@]}" -eq 1 ]
+}
+
 @test "run-cron command creates default cron entry" {
     export TEST_ENV=true
 
     run run-cron
-    [ "$status" -eq 0 ]
+    [ "$status" -eq 124 ]
     [ "$(cat /etc/crontabs/root)" = "0 0 * * * backup >> /var/log/backup.log" ]
 }
 
@@ -11,7 +20,7 @@
     export CRON_MINUTE=12
 
     run run-cron
-    [ "$status" -eq 0 ]
+    [ "$status" -eq 124 ]
     [ "$(cat /etc/crontabs/root)" = "12 0 * * * backup >> /var/log/backup.log" ]
 }
 
@@ -20,7 +29,7 @@
     export CRON_HOUR=5
 
     run run-cron
-    [ "$status" -eq 0 ]
+    [ "$status" -eq 124 ]
     [ "$(cat /etc/crontabs/root)" = "0 5 * * * backup >> /var/log/backup.log" ]
 }
 
@@ -29,6 +38,6 @@
     export CRON_TIME="*/10 9 * * sun"
 
     run run-cron
-    [ "$status" -eq 0 ]
+    [ "$status" -eq 124 ]
     [ "$(cat /etc/crontabs/root)" = "*/10 9 * * sun backup >> /var/log/backup.log" ]
 }