shebang-unit

#!/usr/bin/env bash

# Copyright (C) 2017, Arpinum
#
# shebang-unit is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# shebang-unit is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# shebang-unit. If not, see http://www.gnu.org/licenses/lgpl.html.

# shebang-unit all in one source file


configuration__load() {
  # yes/no representation used with shebang-unit parameters to activate
  # stuff like colors
  SBU_YES="yes"
  SBU_NO="no"

  # Colors for outputs
  SBU_GREEN_COLOR_CODE="\\033[1;32m"
  SBU_RED_COLOR_CODE="\\033[1;31m"
  SBU_YELLOW_COLOR_CODE="\\033[1;33m"
  SBU_DEFAULT_COLOR_CODE="\\e[0m"

  # Functions coding coventions
  SBU_GLOBAL_SETUP_FUNCTION_NAME="global_setup"
  SBU_GLOBAL_TEARDOWN_FUNCTION_NAME="global_teardown"
  SBU_SETUP_FUNCTION_NAME="setup"
  SBU_TEARDOWN_FUNCTION_NAME="teardown"
  SBU_FUNCTION_DECLARATION_REGEX="^[ ]*\(function\)\{0,1\}[ ]*\([A-Za-z0-9_-]\{1,\}\)[ ]*\(([ ]*)\)\{0,1\}[ ]*{"
  SBU_PRIVATE_FUNCTION_NAME_REGEX="^_.*"

  # Default configuration that can be modified with shebang-unit parameters
  # For more information see shebang-unit usages
  SBU_TEST_FILE_PATTERN="*_test.sh"
  SBU_TEST_FUNCTION_PATTERN="*"
  SBU_USE_COLORS="${SBU_YES}"
  SBU_RANDOM_RUN="${SBU_NO}"
  SBU_REPORTERS="simple"
  SBU_JUNIT_REPORTER_OUTPUT_FILE="./junit_report.xml"

  # Internal constants
  SBU_SUCCESS_STATUS_CODE=0
  SBU_FAILURE_STATUS_CODE=1
  SBU_VALUE_SEPARATOR=","
  SBU_TEMP_DIR="/tmp/.shebang-unit"
  SBU_LAST_ASSERTION_MSG_KEY="last_assertion_message"
  SBU_NO_RUN="${SBU_NO}"
  SBU_STANDARD_FD=42
  SBU_ERROR_FD=43
}


assertion__equal() {
  if [[ "$1" != "$2" ]]; then
    _assertion__failed "Actual: <$2>, expected: <$1>."
  fi
}

assertion__different() {
  if [[ "$1" == "$2" ]]; then
    _assertion__failed "Both values are: <$1>."
  fi
}

assertion__string_contains() {
  if ! system__string_contains "$1" "$2"; then
    _assertion__failed "String: <$1> does not contain: <$2>."
  fi
}

assertion__string_does_not_contain() {
  if system__string_contains "$1" "$2"; then
    _assertion__failed "String: <$1> contains: <$2>."
  fi
}

assertion__string_empty() {
  if [[ -n "$1" ]]; then
    _assertion__failed "String: <$1> is not empty."
  fi
}

assertion__string_not_empty() {
  if [[ -z "$1" ]]; then
    _assertion__failed "The string is empty."
  fi
}

assertion__array_contains() {
  local element=$1
  shift 1
  if ! array__contains "${element}" "$@"; then
    local array_as_string="$(system__pretty_print_array "$@")"
    _assertion__failed \
      "Array: <${array_as_string}> does not contain: <${element}>."
  fi
}

assertion__array_does_not_contain() {
  local element=$1
  shift 1
  if array__contains "${element}" "$@"; then
    local array_as_string="$(system__pretty_print_array "$@")"
    _assertion__failed \
      "Array: <${array_as_string}> contains: <${element}>."
  fi
}

assertion__status_code_is_success() {
  if (( $1 != ${SBU_SUCCESS_STATUS_CODE} )); then
    _assertion__failed \
      "Status code is failure instead of success." "$2"
  fi
}

assertion__status_code_is_failure() {
  if (( $1 == ${SBU_SUCCESS_STATUS_CODE} )); then
    _assertion__failed \
      "Status code is success instead of failure." "$2"
  fi
}

assertion__successful() {
  "$@"
  if (( $? != ${SBU_SUCCESS_STATUS_CODE} )); then
    _assertion__failed "Command is failing instead of successful."
  fi
}

assertion__failing() {
  "$@"
  if (( $? == ${SBU_SUCCESS_STATUS_CODE} )); then
    _assertion__failed "Command is successful instead of failing."
  fi
}

_assertion__failed() {
  local message_to_use="$(_assertion__get_assertion_message_to_use "$1" "$2")"
  system__print_line "Assertion failed. ${message_to_use}"
  exit ${SBU_FAILURE_STATUS_CODE}
}

_assertion__get_assertion_message_to_use() {
  local message=$1
  local custom_messsage=$2
  if [[ -n "${custom_messsage}" ]]; then
    system__print "${message} ${custom_messsage}"
  else
    system__print "${message}"
  fi
}


mock__make_function_do_nothing() {
  mock__make_function_call "$1" ":"
}

mock__make_function_prints() {
  local function="$1"
  local text="$2"
  eval "${function}() { printf \"${text}\"; }"
}

mock__make_function_call() {
  local function_to_mock="$1"
  local function_to_call="$2"
  shift 2
  eval "${function_to_mock}() { ${function_to_call} \"\$@\"; }"
}


runner__run_all_test_files() {
  SBU_BASE_TEST_DIRECTORY=$1
  reporter__test_files_start_running
  timer__store_current_time "global_time"
  results__test_files_start_running
  _runner__run_all_test_files_with_pattern_in_directory "$1"
  reporter__test_files_end_running "$(timer__get_time_elapsed "global_time")"
  runner__tests_are_successful
}

_runner__run_all_test_files_with_pattern_in_directory() {
  local file
  local files
  array__from_lines files <<< "$(_runner__get_test_files_in_directory "$1")"
  for file in "${files[@]}"; do
    file_runner__run_test_file "${file}"
  done
}

_runner__get_test_files_in_directory() {
  local files
  array__from_lines files <<< "$(find "$1" -name "${SBU_TEST_FILE_PATTERN}" | sort)"
  if [[ "${SBU_RANDOM_RUN}" == "${SBU_YES}"  ]]; then
    array__from_lines files <<< "$(system__randomize_array "${files[@]}")"
  fi
  array__print "${files[@]}"
}

runner__tests_are_successful() {
  (( $(results__get_failing_tests_count) == 0 \
      && $(results__get_skipped_tests_count) == 0 ))
}


file_runner__run_test_file() {
  local file=$1
  local public_functions=($(parser__get_public_functions_in_file "${file}"))
  local test_functions=($(_file_runner__get_test_functions))
  reporter__test_file_starts_running "${file}" "${#test_functions[@]}"
  ( source "${file}"
    _file_runner__run_global_setup_if_exists \
      && _file_runner__call_all_tests
    _file_runner__run_global_teardown_if_exists )
  _file_runner__check_if_global_setup_has_exited
  reporter__test_file_ends_running
}

_file_runner__run_all_tests_if_global_setup_is_successful() {
    _file_runner__call_all_tests
}

_file_runner__call_all_tests() {
  local i
  for (( i=0; i < ${#test_functions[@]}; i++ )); do
    test_runner__run_test "${test_functions[${i}]}" "${public_functions[@]}"
  done
}

_file_runner__skip_all_tests() {
  local i
  for (( i=0; i < ${#test_functions[@]}; i++ )); do
    test_runner__skip_test "${test_functions[${i}]}" "${public_functions[@]}"
  done
}

_file_runner__get_test_functions() {
  local result=()
  local test_function
  for test_function in "${public_functions[@]}"; do
    if _file_runner__function_is_a_test "${test_function}"\
       && [[ "${test_function}" == ${SBU_TEST_FUNCTION_PATTERN} ]]; then
      result+=("${test_function}")
    fi
  done
  _file_runner__get_randomized_test_functions_if_needed "${result[@]}"
}

_file_runner__get_randomized_test_functions_if_needed() {
  if [[ "${SBU_RANDOM_RUN}" == "${SBU_YES}" ]]; then
    system__randomize_array "$@"
  else
    array__print "$@"
  fi
}

_file_runner__run_global_setup_if_exists() {
  database__put "sbu_current_global_setup_has_failed" "${SBU_YES}"
  _file_runner__call_function_if_exists "${SBU_GLOBAL_SETUP_FUNCTION_NAME}" \
    && database__put "sbu_current_global_setup_has_failed" "${SBU_NO}"
}

_file_runner__run_global_teardown_if_exists() {
  _file_runner__call_function_if_exists "${SBU_GLOBAL_TEARDOWN_FUNCTION_NAME}"
}

_file_runner__function_is_a_test() {
  ! array__contains "$1" \
                      "${SBU_GLOBAL_SETUP_FUNCTION_NAME}" \
                      "${SBU_GLOBAL_TEARDOWN_FUNCTION_NAME}" \
                      "${SBU_SETUP_FUNCTION_NAME}" \
                      "${SBU_TEARDOWN_FUNCTION_NAME}"
}

_file_runner__call_function_if_exists() {
  local function=$1
  shift 1
  if array__contains "${function}" "${public_functions[@]}"; then
    "${function}"
  fi
}

_file_runner__check_if_global_setup_has_exited() {
  local has_exited="$(database__get "sbu_current_global_setup_has_failed")"
  if [[ "${has_exited}" == "${SBU_YES}" ]]; then
    _file_runner__handle_failure_in_global_setup
  fi
}

_file_runner__handle_failure_in_global_setup() {
    reporter__global_setup_has_failed
    _file_runner__skip_all_tests
}


parser__get_public_functions_in_file() {
  _parser__find_functions_in_file "$1" \
    | _parser__filter_private_functions \
    | awk '{ print $1 }'
}

_parser__find_functions_in_file() {
  grep -o "${SBU_FUNCTION_DECLARATION_REGEX}" "$1" \
    | _parser__get_function_name_from_declaration
}

_parser__filter_private_functions() {
  grep -v "${SBU_PRIVATE_FUNCTION_NAME_REGEX}"
}

_parser__get_function_name_from_declaration() {
  sed "s/${SBU_FUNCTION_DECLARATION_REGEX}/\2/"
}


timer__store_current_time() {
  local id=$1
  database__put "sbu_beginning_date_$1" "$(system__get_date_in_seconds)"
}

timer__get_time_elapsed() {
  local id=$1
  local beginning_date="$(database__get "sbu_beginning_date_$1")"
  local ending_date="$(system__get_date_in_seconds)"

  [[ -n "${beginning_date}" ]] \
    && system__print "$(( ending_date - beginning_date ))" \
    || system__print "0"
}


results__test_files_start_running() {
  database__put "sbu_successful_tests_count" "0"
  database__put "sbu_failing_tests_count" "0"
  database__put "sbu_skipped_tests_count" "0"
}

results__get_successful_tests_count() {
  _results__get_tests_count_of_type "successful"
}

results__increment_successful_tests() {
  _results__increment_tests_of_type "successful"
}

results__get_failing_tests_count() {
  _results__get_tests_count_of_type "failing"
}

results__increment_failing_tests() {
  _results__increment_tests_of_type "failing"
}

results__get_skipped_tests_count() {
  _results__get_tests_count_of_type "skipped"
}

results__increment_skipped_tests() {
  _results__increment_tests_of_type "skipped"
}

results__get_total_tests_count() {
  local successes="$(results__get_successful_tests_count)"
  local failures="$(results__get_failing_tests_count)"
  local skipped="$(results__get_skipped_tests_count)"
  system__print "$(( successes + failures + skipped ))"
}

_results__get_tests_count_of_type() {
  local type=$1
  database__get "sbu_${type}_tests_count"
}

_results__increment_tests_of_type() {
  local type=$1
  local count="$(results__get_${type}_tests_count)"
  database__put "sbu_${type}_tests_count" "$(( count + 1 ))"
}


test_runner__run_test() {
  local test_function=$1
  shift 1
  reporter__test_starts_running "${test_function}"
  timer__store_current_time "test_time"
  (
    _test_runner__call_setup_if_exists "$@" \
      && _test_runner__call_test_fonction "${test_function}"
    local setup_and_test_code=$?
    _test_runner__call_teardown_if_exists "$@"
    (( $? == ${SBU_SUCCESS_STATUS_CODE} \
    &&  ${setup_and_test_code} == ${SBU_SUCCESS_STATUS_CODE} ))
  )
  _test_runner__parse_test_function_result $?
  reporter__test_ends_running "$(timer__get_time_elapsed "test_time")"
}

_test_runner__call_test_fonction() {
  ( "$1" )
}

_test_runner__call_setup_if_exists() {
  _test_runner__call_function_if_exits "${SBU_SETUP_FUNCTION_NAME}" "$@"
}

_test_runner__call_teardown_if_exists() {
  _test_runner__call_function_if_exits "${SBU_TEARDOWN_FUNCTION_NAME}" "$@"
}

_test_runner__parse_test_function_result() {
  if (( $1 == ${SBU_SUCCESS_STATUS_CODE} )); then
    results__increment_successful_tests
    reporter__test_has_succeeded
  else
    results__increment_failing_tests
    reporter__test_has_failed
  fi
}

_test_runner__call_function_if_exits() {
  local function=$1
  shift 1
  if array__contains "${function}" "$@"; then
    "${function}"
  fi
}

test_runner__skip_test() {
  local test_function=$1
  reporter__test_starts_running "${test_function}"
  results__increment_skipped_tests
  reporter__test_is_skipped "${test_function}"
  reporter__test_ends_running 0
}


reporter__test_files_start_running() {
  _reporter__initialise_file_descriptors
  reporter__for_each_reporter \
    _reporter__call_function "test_files_start_running" "$@"
}

_reporter__initialise_file_descriptors() {
  eval "exec ${SBU_STANDARD_FD}>&1"
  eval "exec ${SBU_ERROR_FD}>&2"
}

reporter__global_setup_has_failed() {
  reporter__for_each_reporter \
    _reporter__call_function "global_setup_has_failed" "$@"
}

reporter__test_file_starts_running() {
  reporter__for_each_reporter \
    _reporter__call_function "test_file_starts_running" "$@"
}

reporter__test_starts_running() {
  reporter__for_each_reporter \
    _reporter__call_function "test_starts_running" "$@"
}

reporter__test_has_succeeded() {
  reporter__for_each_reporter \
    _reporter__call_function "test_has_succeeded" "$@"
}

reporter__test_has_failed() {
  reporter__for_each_reporter \
    _reporter__call_function "test_has_failed" "$@"
}

reporter__test_is_skipped() {
  reporter__for_each_reporter \
    _reporter__call_function "test_is_skipped" "$@"
}

reporter__test_ends_running() {
  reporter__for_each_reporter \
    _reporter__call_function "test_ends_running" "$@"
}

reporter__test_file_ends_running() {
  reporter__for_each_reporter \
    _reporter__call_function "test_file_ends_running" "$@"
}

reporter__test_files_end_running() {
  reporter__for_each_reporter \
    _reporter__call_function "test_files_end_running" "$@"
  _reporter__release_file_descriptors
}

_reporter__release_file_descriptors() {
  eval "exec 1>&${SBU_STANDARD_FD} ${SBU_STANDARD_FD}>&-"
  eval "exec 2>&${SBU_ERROR_FD} ${SBU_ERROR_FD}>&-"
}

_reporter__call_function() {
  local function=$1
  shift 1
  "${reporter}_reporter__${function}" "$@"
}

reporter__for_each_reporter() {
  local reporter
  for reporter in ${SBU_REPORTERS//${SBU_VALUE_SEPARATOR}/ }; do
    "$@"
  done
}

reporter__print_with_color() {
  system__print_with_color "$@" >&${SBU_STANDARD_FD}
}

reporter__print_line() {
  system__print_line "$@" >&${SBU_STANDARD_FD}
}

reporter__print_line_with_color() {
  system__print_line_with_color "$@" >&${SBU_STANDARD_FD}
}

reporter__print_new_line() {
  system__print_new_line >&${SBU_STANDARD_FD}
}

reporter__get_color_code_for_tests_result() {
  local color_code=${SBU_GREEN_COLOR_CODE}
  if ! runner__tests_are_successful; then
    color_code=${SBU_RED_COLOR_CODE}
  fi
  system__print "${color_code}"
}

reporter__get_test_file_relative_name() {
  system__print "${1#${SBU_BASE_TEST_DIRECTORY}\/}"
}


simple_reporter__test_files_start_running() {
  :
}

simple_reporter__test_file_starts_running() {
  local relative_name="$(reporter__get_test_file_relative_name "$1")"
  reporter__print_line "[File] ${relative_name}"
}

simple_reporter__global_setup_has_failed() {
  reporter__print_line_with_color \
    "Global setup has failed" ${SBU_YELLOW_COLOR_CODE}
}

simple_reporter__test_starts_running() {
  reporter__print_line "[Test] $1"
}

simple_reporter__test_has_succeeded() {
  reporter__print_line_with_color "OK" ${SBU_GREEN_COLOR_CODE}
}

simple_reporter__test_has_failed() {
  reporter__print_line_with_color "KO" ${SBU_RED_COLOR_CODE}
}

simple_reporter__test_is_skipped() {
  reporter__print_line_with_color "Skipped" ${SBU_YELLOW_COLOR_CODE}
}

simple_reporter__test_ends_running() {
  :
}

simple_reporter__test_file_ends_running() {
  reporter__print_new_line
}

simple_reporter__test_files_end_running() {
  local time="in $1s"
  reporter__print_line "[Results]"
  local color="$(reporter__get_color_code_for_tests_result)"
  local total_count="$(_simple_reporter__get_total_count_message)"
  local failures_count="$(_simple_reporter__get_failures_count_message)"
  local skipped_count="$(results__get_skipped_tests_count) skipped"
  local message="${total_count}, ${failures_count}, ${skipped_count} ${time}"
  reporter__print_line_with_color "${message}" "${color}"
}

_simple_reporter__get_total_count_message() {
  local count="$(results__get_total_tests_count)"
  system__print "${count} test$(_simple_reporter__get_agreement ${count})"
}

_simple_reporter__get_failures_count_message() {
  local count="$(results__get_failing_tests_count)"
  system__print "${count} failure$(_simple_reporter__get_agreement ${count})"
}

_simple_reporter__get_agreement() {
  (( $1 > 1 )) \
    && system__print "s" \
    || system__print ""
}


dots_reporter__test_files_start_running() {
  exec 1>/dev/null
  exec 2>/dev/null
}

dots_reporter__test_file_starts_running() {
  :
}

dots_reporter__global_setup_has_failed() {
  :
}

dots_reporter__test_starts_running() {
  :
}

dots_reporter__test_has_succeeded() {
  reporter__print_with_color "." ${SBU_GREEN_COLOR_CODE}
}

dots_reporter__test_has_failed() {
  reporter__print_with_color "F" ${SBU_RED_COLOR_CODE}
}

dots_reporter__test_is_skipped() {
  reporter__print_with_color "S" ${SBU_YELLOW_COLOR_CODE}
}

dots_reporter__test_ends_running() {
  :
}

dots_reporter__test_file_ends_running() {
  :
}

dots_reporter__test_files_end_running() {
  local color="$(reporter__get_color_code_for_tests_result)"
  local texte="$(runner__tests_are_successful \
                  && system__print "OK" \
                  || system__print "KO")"
  reporter__print_line_with_color "${texte}" "${color}"
}


junit_reporter__test_files_start_running() {
  _junit_reporter__initialise_report_with \
    "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>"
  _junit_reporter__write_line_to_report "<testsuites>"
}

junit_reporter__test_file_starts_running() {
  local file_name=$1
  local test_count=$2
  local suite_name="$(_junit_reporter__get_suite_name "${file_name}")"
  database__put "sbu_current_suite_name" "${suite_name}"
  _junit_reporter__write_line_to_report \
    "  <testsuite name=\"${suite_name}\" tests=\"${test_count}\">"
  _junit_reporter__delete_all_outputs_lines "suite"
  _junit_reporter__redirect_outputs_to_database "suite"
}

junit_reporter__global_setup_has_failed() {
  :
}

junit_reporter__test_starts_running() {
  local suite_name="$(database__get "sbu_current_suite_name")"
  local test_name="$(xml__encode_text "$1")"
  _junit_reporter__write_line_to_report \
    "    <testcase name=\"${test_name}\" classname=\"${suite_name}\" \
time=\"\${sbu_current_test_time}\">"
  _junit_reporter__delete_all_outputs_lines "test"
  _junit_reporter__redirect_outputs_to_database "test"
}

junit_reporter__test_has_succeeded() {
  :
}

junit_reporter__test_has_failed() {
  _junit_reporter__write_line_to_report "      <failure>"
  _junit_reporter__write_line_to_report "      </failure>"
}

junit_reporter__test_is_skipped() {
  _junit_reporter__write_line_to_report "      <skipped>"
  _junit_reporter__write_line_to_report "      </skipped>"
}

junit_reporter__test_ends_running() {
  _junit_reporter__redirect_outputs_to_database "suite"
  _junit_reporter__write_time_in_current_test_case_tag_in_report "$1"
  _junit_reporter__flush_all_outputs_to_report_if_any "test"
  _junit_reporter__write_line_to_report "    </testcase>"
}

_junit_reporter__write_time_in_current_test_case_tag_in_report() {
  local test_time=$1
  local report_content=$(cat "${SBU_JUNIT_REPORTER_OUTPUT_FILE}")
  local content_with_time="$(system__substitute_variable \
    "${report_content}" "sbu_current_test_time" "${test_time}")"
  system__print_line \
    "${content_with_time}" > "${SBU_JUNIT_REPORTER_OUTPUT_FILE}"
}

junit_reporter__test_file_ends_running() {
  _junit_reporter__flush_all_outputs_to_report_if_any "suite"
  _junit_reporter__write_line_to_report "  </testsuite>"
  database__put "sbu_current_suite_name" ""
}

junit_reporter__test_files_end_running() {
  _junit_reporter__write_line_to_report "</testsuites>"
}

_junit_reporter__get_suite_name() {
  local relative_name="$(reporter__get_test_file_relative_name "$1")"
  local dots_replaced_by_underscores="${relative_name//./_}"
  local slashes_replaced_by_dots="${dots_replaced_by_underscores//\//.}"
  xml__encode_text "${slashes_replaced_by_dots}"
}

_junit_reporter__initialise_report_with() {
  system__print_line "$1" > "${SBU_JUNIT_REPORTER_OUTPUT_FILE}"
}

_junit_reporter__write_line_to_report() {
  system__print_line "$1" >> "${SBU_JUNIT_REPORTER_OUTPUT_FILE}"
}

_junit_reporter__redirect_outputs_to_database() {
  local scope=$1
  exec 1>>\
    "$(database__get_descriptor "sbu_current_${scope}_standard_ouputs_lines")"
  exec 2>>\
    "$(database__get_descriptor "sbu_current_${scope}_error_ouputs_lines")"
}

_junit_reporter__delete_all_outputs_lines() {
  database__put "sbu_current_$1_standard_ouputs_lines"
  database__put "sbu_current_$1_error_ouputs_lines"
}

_junit_reporter__flush_all_outputs_to_report_if_any() {
  _junit_reporter__flush_outputs_to_report_if_any "$1" "standard"
  _junit_reporter__flush_outputs_to_report_if_any "$1" "error"
}

_junit_reporter__flush_outputs_to_report_if_any() {
  local scope=$1
  local outputs_type=$2
  local key="sbu_current_${scope}_${outputs_type}_ouputs_lines"
  local outputs="$(database__get "${key}")"
  if [[ -n "${outputs}" ]]; then
    _junit_reporter__write_outputs_to_report \
      "${scope}" "${outputs_type}" "${outputs}"
    database__put "${key}" ""
  fi
}

_junit_reporter__write_outputs_to_report() {
  local scope=$1
  local outputs_type=$2
  local outputs=$3
  local tag="$(_junit_reporter__get_tag_for_outputs_type "${outputs_type}")"
  local indentation="$(_junit_reporter__get_indentation_for_scope "${scope}")"
  _junit_reporter__write_line_to_report "${indentation}<${tag}>"
  _junit_reporter__write_line_to_report "$(xml__encode_text "${outputs}")"
  _junit_reporter__write_line_to_report "${indentation}</${tag}>"
}

_junit_reporter__get_tag_for_outputs_type() {
  [[ "$1" == "standard" ]] \
    && system__print "system-out" \
    || system__print "system-err"
}

_junit_reporter__get_indentation_for_scope() {
  [[ "$1" == "suite" ]] \
    && system__print "    " \
    || system__print "      "
}


xml__encode_text() {
  local encoded=${1//\&/\&amp\;}
  encoded=${encoded//\</\&lt\;}
  encoded=${encoded//\>/\&gt\;}
  encoded=${encoded//\"/\&quot\;}
  encoded=${encoded//\'/\&apos\;}
  system__print "${encoded}"
}


database__initialise() {
  _SBU_DB_TOKEN="$(system__random)"
  _database__ensure_directory_exists
}

database__release() {
  rm -rf "$(_database__get_dir)"
}

database__put() {
  _database__ensure_directory_exists
  system__print "$2" > "$(_database__get_dir)/$1"
}

database__post() {
  _database__ensure_directory_exists
  system__print "$2" >> "$(_database__get_dir)/$1"
}

database__post_line() {
  _database__ensure_directory_exists
  system__print_line "$2" >> "$(_database__get_dir)/$1"
}

database__put_variable() {
  _database__ensure_directory_exists
  database__put "$1" "${!1}"
}

database__get() {
  [[ -e "$(_database__get_dir)/$1" ]] && cat "$(_database__get_dir)/$1"
}

database__get_descriptor() {
  system__print "$(_database__get_dir)/$1"
}

_database__ensure_directory_exists() {
  mkdir -p "$(_database__get_dir)"
}

_database__get_dir() {
  system__print "${SBU_TEMP_DIR}/database/${_SBU_DB_TOKEN}"
}


system__get_string_or_default() {
  [[ -n "$1" ]] \
    && system__print "$1" \
    || system__print "$2"
}

system__get_date_in_seconds() {
  date +%s
}

system__print_line_with_color() {
  system__print_with_color "$@"
  system__print_new_line
}

system__print_with_color() {
  if [[ "${SBU_USE_COLORS}" == "${SBU_YES}" ]]; then
    printf "$2$1${SBU_DEFAULT_COLOR_CODE}"
  else
    system__print "$1"
  fi
}

system__print_line() {
  system__print "$1"
  system__print_new_line
}

system__print() {
  printf "%s" "$1"
}

system__print_new_line() {
  printf "\n"
}

array__contains() {
  local value=$1
  shift 1
  local i
  for (( i=1; i <= $#; i++ )); do
    if [[ "${!i}" == "${value}" ]]; then
      return ${SBU_SUCCESS_STATUS_CODE}
    fi
  done
  return ${SBU_FAILURE_STATUS_CODE}
}

array__from_lines() {
  local IFS=$'\n'
  eval "$1=(\$(</dev/stdin))"
}

array__print() {
  local element
  for element in "$@"; do
    system__print_line "${element}"
  done
}

system__pretty_print_array() {
  local array_as_string=""
  local i
  for (( i=1; i <= $#; i++ )); do
    array_as_string+="${!i}, "
  done
  array_as_string=${array_as_string/%, /}
  printf "[%s]" "${array_as_string}"
}

system__string_contains() {
  [[ "$1" == *"$2"* ]]
}

system__randomize_array() {
  local copy=("$@")
  while (( ${#copy[@]} > 0 )); do
    local random_index=$(( $(system__random) % ${#copy[@]} ))
    system__print_line "${copy[${random_index}]}"
    unset copy[${random_index}]
    copy=("${copy[@]}")
  done
}

system__random() {
  system__print "${RANDOM}"
}

system__substitute_variable() {
    local string=$1
    local key="\$\{$2\}"
    local value=$3
    printf "%s" "${string//${key}/${value}}"
}


main__main() {
  configuration__load
  _main__initialise
  local parsed_arguments=0
  _main__parse_arguments "$@"
  shift ${parsed_arguments}
  _main__assert_only_one_argument_left $#
  _main__assert_reporters_are_known
  SBU_BASE_TEST_DIRECTORY=$1

  if [[ "${SBU_NO_RUN}" != "${SBU_YES}" ]]; then
    runner__run_all_test_files "$1"
    return $?
  fi
}

_main__initialise() {
  database__initialise
  trap _main__release EXIT
}

_main__release() {
  database__release
}

_main__parse_arguments() {
  local argument
  for argument in "$@"; do
    case "${argument}" in
      -a|--api-cheat-sheet)
      _main__print_api_cheat_sheet_and_exit
      ;;
      -c=*|--colors=*)
      SBU_USE_COLORS="${argument#*=}"
      (( parsed_arguments++ ))
      ;;
      -d=*|--random-run=*)
      SBU_RANDOM_RUN="${argument#*=}"
      (( parsed_arguments++ ))
      ;;
      -h|--help)
      _main__print_full_usage
      exit ${SBU_SUCCESS_STATUS_CODE}
      ;;
      -f=*|--file-pattern=*)
      SBU_TEST_FILE_PATTERN="${argument#*=}"
      (( parsed_arguments++ ))
      ;;
      --no-run)
      SBU_NO_RUN="${SBU_YES}"
      (( parsed_arguments++ ))
      ;;
      -o=*|--output-file=*)
      SBU_JUNIT_REPORTER_OUTPUT_FILE="${argument#*=}"
      (( parsed_arguments++ ))
      ;;
      -t=*|--test-pattern=*)
      SBU_TEST_FUNCTION_PATTERN="${argument#*=}"
      (( parsed_arguments++ ))
      ;;
      -r=*|--reporters=*)
      SBU_REPORTERS="${argument#*=}"
      (( parsed_arguments++ ))
      ;;
      -*|--*)
      _main__print_illegal_option "${argument}"
      _main__print_usage_and_exit_with_code ${SBU_FAILURE_STATUS_CODE}
      ;;
    esac
  done
}

 _main__assert_reporters_are_known() {
  reporter__for_each_reporter _main__fail_if_reporter_unknown
}

_main__fail_if_reporter_unknown() {
  if ! array__contains "${reporter}" "simple" "dots" "junit"; then
    system__print_line \
      "$(_main__get_script_name): unknown reporter <${reporter}>"
    exit ${SBU_FAILURE_STATUS_CODE}
  fi
}

_main__print_illegal_option() {
  local option="${1%=*}"
  option="${option#-}"
  option="${option#-}"
  system__print_line "$(_main__get_script_name): illegal option -- ${option}"
}

_main__assert_only_one_argument_left() {
  if (( $1 > 1 )); then
    system__print_line "$(_main__get_script_name): only one path is allowed"
    _main__print_usage_and_exit_with_code ${SBU_FAILURE_STATUS_CODE}
  fi
}

_main__get_script_name() {
  basename "${BASH_SOURCE[0]}"
}

_main__print_usage_and_exit_with_code() {
  _main__print_usage
  exit $1
}

_main__print_full_usage() {
  _main__print_usage
  local script="$(_main__get_script_name)"
  system__print_new_line
  system__print_line "\
[options]
  -a, --api-cheat-sheet
    print api cheat sheet like assertions
  -c, --colors=${SBU_YES} or ${SBU_NO}
    tests output with colors or no
  -d, --random-run=${SBU_YES} or ${SBU_NO}
    tests files and functions randomly run or no
  -f, --file-pattern=<pattern>
    pattern to filter test files
  -h
    print usage
  -o, --output-file=<file>
    output file for JUnit reporter
  -r, --reporters=<reporter1,reporter2>
    comma-separated reporters (simple, dots or junit)
  -t, --test-pattern=<pattern>
    pattern to filter test function in files

[examples]
  ${script} .
    run all tests in current directory
  ${script} -p=*test.sh sources/test
    run all tests files ending with test.sh in sources/test"
}

_main__print_usage() {
  system__print_line "\
usage: $(_main__get_script_name) [options] path
       run all tests in path"
}

_main__print_api_cheat_sheet_and_exit() {
  system__print_line "\
[assertions]
  assertion__equal (value, other)
    -> assert that <value> is equal to <other>
  assertion__different (value, other)
    -> assert that <value> is different from <other>
  assertion__string_contains (string, substring)
    -> assert that <string> contains <substring>
  assertion__string_does_not_contain (string, substring)
    -> assert that <string> does not contain <substring>
  assertion__string_empty (string)
    -> assert that <string> is empty
  assertion__string_not_empty (string)
    -> assert that <string> is not empty
  assertion__array_contains (element, array[0], array[1], ...)
    -> assert that the <array> contains the <element>
  assertion__array_does_not_contain (element, array elements...)
    -> assert that the <array> does not contain the <element>
  assertion__successful (command)
    -> assert that the <command> is successful
  assertion__failing (command)
    -> assert that the <command> is failing
  assertion__status_code_is_success (code)
    -> assert that the status <code> is 0
  assertion__status_code_is_failure (code)
    -> assert that the status <code> is not 0

[special functions]
  ${SBU_GLOBAL_SETUP_FUNCTION_NAME}
    -> Executed before all tests in a file
  ${SBU_GLOBAL_TEARDOWN_FUNCTION_NAME}
    -> Executed after all tests in a file
  ${SBU_SETUP_FUNCTION_NAME}
    -> Executed before each test in a file
  ${SBU_TEARDOWN_FUNCTION_NAME}
    -> Executed after each test in a file

[mocks]
  mock__make_function_do_nothing (function_to_mock)
    -> make function do nothing
  mock__make_function_prints (function_to_mock, message)
    -> make function prints a message
  mock__make_function_call (function_to_mock, function_to_call)
    -> make function call another function"
  exit ${SBU_SUCCESS_STATUS_CODE}
}


main__main "$@"