tests: add test for creation of crontab file

tests/unit/cron.bats

@@ -43,6 +43,52 @@ teardown() {
   assert_failure
 }
 
+@test "(cron) creation" {
+  run deploy_app python dokku@dokku.me:$TEST_APP
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "cat /var/spool/cron/crontabs/dokku"
+  echo "output: $output"
+  echo "status: $status"
+  assert_failure
+
+  run deploy_app python dokku@dokku.me:$TEST_APP template_cron_file_valid
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "cat /var/spool/cron/crontabs/dokku"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains "python task.py schedule"
+
+  run deploy_app python dokku@dokku.me:$TEST_APP template_cron_file_valid_short
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "cat /var/spool/cron/crontabs/dokku"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains "python task.py daily"
+
+  run deploy_app python dokku@dokku.me:$TEST_APP template_cron_file_valid_multiple
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+
+  run /bin/bash -c "cat /var/spool/cron/crontabs/dokku"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+  assert_output_contains "python task.py first"
+  assert_output_contains "python task.py second"
+}
+
 
 template_cron_file_invalid() {
   local APP="$1"
@@ -93,3 +139,58 @@ template_cron_file_invalid_schedule_seconds() {
 }
 EOF
 }
+
+template_cron_file_valid() {
+  local APP="$1"
+  local APP_REPO_DIR="$2"
+  [[ -z "$APP" ]] && local APP="$TEST_APP"
+  echo "injecting valid cron app.json -> $APP_REPO_DIR/app.json"
+  cat <<EOF >"$APP_REPO_DIR/app.json"
+{
+  "cron": [
+    {
+      "command": "python task.py schedule",
+      "schedule": "5 5 5 5 5"
+    }
+  ]
+}
+EOF
+}
+
+template_cron_file_valid_short() {
+  local APP="$1"
+  local APP_REPO_DIR="$2"
+  [[ -z "$APP" ]] && local APP="$TEST_APP"
+  echo "injecting valid cron app.json -> $APP_REPO_DIR/app.json"
+  cat <<EOF >"$APP_REPO_DIR/app.json"
+{
+  "cron": [
+    {
+      "command": "python task.py daily",
+      "schedule": "@daily"
+    }
+  ]
+}
+EOF
+}
+
+template_cron_file_valid_multiple() {
+  local APP="$1"
+  local APP_REPO_DIR="$2"
+  [[ -z "$APP" ]] && local APP="$TEST_APP"
+  echo "injecting valid cron app.json -> $APP_REPO_DIR/app.json"
+  cat <<EOF >"$APP_REPO_DIR/app.json"
+{
+  "cron": [
+    {
+      "command": "python task.py first",
+      "schedule": "5 5 5 5 5"
+    },
+    {
+      "command": "python task.py second",
+      "schedule": "@daily"
+    }
+  ]
+}
+EOF
+}