feat: split out test files and execute them manually

This breaks the old grouping mechanism, but honestly that was a weird way of doing it.

tests/unit/tar.bats

@@ -0,0 +1,58 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+setup() {
+  global_setup
+  create_app
+}
+
+teardown() {
+  destroy_app
+  global_teardown
+}
+
+deploy_app_tar() {
+  APP_TYPE="$1"; APP_TYPE=${APP_TYPE:="nodejs-express"}
+  TMP=$(mktemp -d "/tmp/dokku.me.XXXXX")
+
+  rmdir "$TMP" && cp -r "${BATS_TEST_DIRNAME}/../../tests/apps/$APP_TYPE" "$TMP"
+  pushd "$TMP" &>/dev/null || exit 1
+  trap 'popd &>/dev/null || true; rm -rf "$TMP"' RETURN INT TERM
+
+  shift 1
+  tar c . $* | ssh dokku@dokku.me tar:in $TEST_APP || destroy_app $?
+  sleep 5 # nginx needs some time to itself...
+}
+
+@test "(tar) tar:help" {
+  run /bin/bash -c "dokku tar"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Manage app deploys via tar"
+  help_output="$output"
+
+  run /bin/bash -c "dokku tar:help"
+  echo "output: $output"
+  echo "status: $status"
+  assert_output_contains "Manage app deploys via tar"
+  assert_output "$help_output"
+}
+
+@test "(tar) non-tarbomb deploy using tar:in" {
+  deploy_app_tar nodejs-express --transform 's,^,prefix/,'
+
+  run /bin/bash -c "response=\"$(curl -s -S ${TEST_APP}.dokku.me)\"; echo \$response; test \"\$response\" == \"nodejs/express\""
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+}
+
+@test "(tar) tarbomb deploy using tar:in" {
+  deploy_app_tar nodejs-express
+
+  run /bin/bash -c "response=\"$(curl -s -S ${TEST_APP}.dokku.me)\"; echo \$response; test \"\$response\" == \"nodejs/express\""
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
+}