tests: test that script-level temp resources are cleaned up

Add a unit test and an acceptance test to verify that temp resources
created in the `set_up_before_script` function are correctly cleaned up.

Author: carlfriedrich

tests/acceptance/bashunit_script_temp_file_cleanup_test.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+# @data_provider execution_modes
+function test_script_temp_files_are_cleaned_up_after_test_run() {
+  local mode="$1"
+  local fixture_file="tests/acceptance/fixtures/script_with_setup_temp_file.sh"
+  local temp_base_dir="${TMPDIR:-/tmp}/bashunit/tmp"
+  local output
+
+  if [[ "$mode" == "parallel" ]]; then
+    output=$(./bashunit --parallel "$fixture_file" 2>&1)
+  else
+    output=$(./bashunit "$fixture_file" 2>&1)
+  fi
+
+  # Check that the test run was successful
+  assert_contains "All tests passed" "$output"
+
+  # Check that no script-setup temp files remain in the temp directory
+  local remaining_files
+  if [[ -d "$temp_base_dir" ]]; then
+    remaining_files=$(find "$temp_base_dir" -name "*script-setup*" 2>/dev/null || true)
+
+    assert_empty "$remaining_files"
+
+    # Manually clean up remaining files
+    if [[ -n "$remaining_files" ]]; then
+      echo "$remaining_files" | xargs rm -rf 2>/dev/null || true
+    fi
+  fi
+}
+
+function execution_modes() {
+  echo "sequential"
+  echo "parallel"
+}

tests/acceptance/fixtures/script_with_setup_temp_file.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+function set_up_before_script() {
+  SCRIPT_TEMP_FILE=$(temp_file "script-setup")
+  SCRIPT_TEMP_DIR=$(temp_dir "script-setup")
+  echo "Script temp file created: $SCRIPT_TEMP_FILE" > "$SCRIPT_TEMP_FILE"
+  echo "Script temp dir created: $SCRIPT_TEMP_DIR" > "$SCRIPT_TEMP_DIR/marker.txt"
+}
+
+function test_simple_passing_test() {
+  assert_equals "1" "1"
+}
+
+function test_another_simple_test() {
+  assert_file_exists "$SCRIPT_TEMP_FILE"
+  assert_directory_exists "$SCRIPT_TEMP_DIR"
+}

tests/unit/globals_test.sh

@@ -4,6 +4,11 @@
 
 set -euo pipefail
 
+function set_up_before_script() {
+  SCRIPT_TEMP_FILE=$(temp_file "custom-prefix")
+  SCRIPT_TEMP_DIR=$(temp_dir "custom-prefix")
+}
+
 function tear_down_after_script() {
   export BASHUNIT_DEV_LOG=""
 }
@@ -58,22 +63,30 @@ function test_globals_random_str_custom_len() {
   assert_matches "^[A-Za-z0-9]{3}$" "$(random_str 3)"
 }
 
-function test_globals_temp_file() {
+function test_globals_temp_file_in_test_function() {
   # shellcheck disable=SC2155
   local temp_file=$(temp_file "custom-prefix")
   assert_file_exists "$temp_file"
   cleanup_temp_files
   assert_file_not_exists "$temp_file"
 }
 
-function test_globals_temp_dir() {
+function test_globals_temp_dir_in_test_function() {
   # shellcheck disable=SC2155
   local temp_dir=$(temp_dir "custom-prefix")
   assert_directory_exists "$temp_dir"
   cleanup_temp_files
   assert_directory_not_exists "$temp_dir"
 }
 
+function test_globals_temp_dir_and_file_in_script() {
+  assert_directory_exists "$SCRIPT_TEMP_DIR"
+  assert_file_exists "$SCRIPT_TEMP_FILE"
+  cleanup_temp_files
+  assert_directory_not_exists "$SCRIPT_TEMP_DIR"
+  assert_file_not_exists "$SCRIPT_TEMP_FILE"
+}
+
 function test_globals_log_level_error() {
   log "error" "hello," "error"