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generate_test_runner.rb 20.00 KiB
#!/usr/bin/env ruby
# ==========================================
# Unity Project - A Test Framework for C
# Copyright (c) 2007 Mike Karlesky, Mark VanderVoord, Greg Williams
# [Released under MIT License. Please refer to license.txt for details]
# ==========================================
class UnityTestRunnerGenerator
def initialize(options = nil)
@options = UnityTestRunnerGenerator.default_options
case options
when NilClass
@options
when String
@options.merge!(UnityTestRunnerGenerator.grab_config(options))
when Hash
# Check if some of these have been specified
@options[:has_setup] = !options[:setup_name].nil?
@options[:has_teardown] = !options[:teardown_name].nil?
@options[:has_suite_setup] = !options[:suite_setup].nil?
@options[:has_suite_teardown] = !options[:suite_teardown].nil?
@options.merge!(options)
else
raise 'If you specify arguments, it should be a filename or a hash of options'
end
require_relative 'type_sanitizer'
end
def self.default_options
{
includes: [],
defines: [],
plugins: [],
framework: :unity,
test_prefix: 'test|spec|should',
mock_prefix: 'Mock',
mock_suffix: '',
setup_name: 'setUp',
teardown_name: 'tearDown',
test_reset_name: 'resetTest',
test_verify_name: 'verifyTest',
main_name: 'main', # set to :auto to automatically generate each time
main_export_decl: '',
cmdline_args: false,
omit_begin_end: false,
use_param_tests: false,
include_extensions: '(?:hpp|hh|H|h)',
source_extensions: '(?:cpp|cc|ino|C|c)'
}
end
def self.grab_config(config_file)
options = default_options
unless config_file.nil? || config_file.empty?
require 'yaml'
yaml_guts = YAML.load_file(config_file)
options.merge!(yaml_guts[:unity] || yaml_guts[:cmock])
raise "No :unity or :cmock section found in #{config_file}" unless options
end
options
end
def run(input_file, output_file, options = nil)
@options.merge!(options) unless options.nil?
# pull required data from source file
source = File.read(input_file)
source = source.force_encoding('ISO-8859-1').encode('utf-8', replace: nil)
tests = find_tests(source)
headers = find_includes(source) testfile_includes = (headers[:local] + headers[:system])
used_mocks = find_mocks(testfile_includes)
testfile_includes = (testfile_includes - used_mocks)
testfile_includes.delete_if { |inc| inc =~ /(unity|cmock)/ }
find_setup_and_teardown(source)
# build runner file
generate(input_file, output_file, tests, used_mocks, testfile_includes)
# determine which files were used to return them
all_files_used = [input_file, output_file]
all_files_used += testfile_includes.map { |filename| filename + '.c' } unless testfile_includes.empty?
all_files_used += @options[:includes] unless @options[:includes].empty?
all_files_used += headers[:linkonly] unless headers[:linkonly].empty?
all_files_used.uniq
end
def generate(input_file, output_file, tests, used_mocks, testfile_includes)
File.open(output_file, 'w') do |output|
create_header(output, used_mocks, testfile_includes)
create_externs(output, tests, used_mocks)
create_mock_management(output, used_mocks)
create_setup(output)
create_teardown(output)
create_suite_setup(output)
create_suite_teardown(output)
create_reset(output)
create_run_test(output) unless tests.empty?
create_args_wrappers(output, tests)
create_main(output, input_file, tests, used_mocks)
end
return unless @options[:header_file] && !@options[:header_file].empty?
File.open(@options[:header_file], 'w') do |output|
create_h_file(output, @options[:header_file], tests, testfile_includes, used_mocks)
end
end
def find_tests(source)
tests_and_line_numbers = []
# contains characters which will be substituted from within strings, doing
# this prevents these characters from interfering with scrubbers
# @ is not a valid C character, so there should be no clashes with files genuinely containing these markers
substring_subs = { '{' => '@co@', '}' => '@cc@', ';' => '@ss@', '/' => '@fs@' }
substring_re = Regexp.union(substring_subs.keys)
substring_unsubs = substring_subs.invert # the inverse map will be used to fix the strings afterwords
substring_unsubs['@quote@'] = '\\"'
substring_unsubs['@apos@'] = '\\\''
substring_unre = Regexp.union(substring_unsubs.keys)
source_scrubbed = source.clone
source_scrubbed = source_scrubbed.gsub(/\\"/, '@quote@') # hide escaped quotes to allow capture of the full string/char
source_scrubbed = source_scrubbed.gsub(/\\'/, '@apos@') # hide escaped apostrophes to allow capture of the full string/char
source_scrubbed = source_scrubbed.gsub(/("[^"\n]*")|('[^'\n]*')/) { |s| s.gsub(substring_re, substring_subs) } # temporarily hide problematic characters within strings
source_scrubbed = source_scrubbed.gsub(/\/\/(?:.+\/\*|\*(?:$|[^\/])).*$/, '') # remove line comments that comment out the start of blocks
source_scrubbed = source_scrubbed.gsub(/\/\*.*?\*\//m, '') # remove block comments
source_scrubbed = source_scrubbed.gsub(/\/\/.*$/, '') # remove line comments (all that remain)
lines = source_scrubbed.split(/(^\s*\#.*$) | (;|\{|\}) /x) # Treat preprocessor directives as a logical line. Match ;, {, and } as end of lines
.map { |line| line.gsub(substring_unre, substring_unsubs) } # unhide the problematic characters previously removed
lines.each_with_index do |line, _index|
# find tests
next unless line =~ /^((?:\s*(?:TEST_CASE|TEST_RANGE)\s*\(.*?\)\s*)*)\s*void\s+((?:#{@options[:test_prefix]}).*)\s*\(\s*(.*)\s*\)/m
arguments = Regexp.last_match(1)
name = Regexp.last_match(2)
call = Regexp.last_match(3)
params = Regexp.last_match(4)
args = nil
if @options[:use_param_tests] && !arguments.empty?
args = []
arguments.scan(/\s*TEST_CASE\s*\((.*)\)\s*$/) { |a| args << a[0] }
arguments.scan(/\s*TEST_RANGE\s*\((.*)\)\s*$/).flatten.each do |range_str|
args += range_str.scan(/\[(-?\d+.?\d*), *(-?\d+.?\d*), *(-?\d+.?\d*)\]/).map do |arg_values_str|
arg_values_str.map do |arg_value_str|
arg_value_str.include?('.') ? arg_value_str.to_f : arg_value_str.to_i
end
end.map do |arg_values|
(arg_values[0]..arg_values[1]).step(arg_values[2]).to_a
end.reduce do |result, arg_range_expanded|
result.product(arg_range_expanded)
end.map do |arg_combinations|
arg_combinations.flatten.join(', ')
end
end
end
tests_and_line_numbers << { test: name, args: args, call: call, params: params, line_number: 0 }
end
tests_and_line_numbers.uniq! { |v| v[:test] }
# determine line numbers and create tests to run
source_lines = source.split("\n")
source_index = 0
tests_and_line_numbers.size.times do |i|
source_lines[source_index..-1].each_with_index do |line, index|
next unless line =~ /\s+#{tests_and_line_numbers[i][:test]}(?:\s|\()/
source_index += index
tests_and_line_numbers[i][:line_number] = source_index + 1
break
end
end
tests_and_line_numbers
end
def find_includes(source)
# remove comments (block and line, in three steps to ensure correct precedence)
source.gsub!(/\/\/(?:.+\/\*|\*(?:$|[^\/])).*$/, '') # remove line comments that comment out the start of blocks
source.gsub!(/\/\*.*?\*\//m, '') # remove block comments
source.gsub!(/\/\/.*$/, '') # remove line comments (all that remain)
# parse out includes
includes = {
local: source.scan(/^\s*#include\s+\"\s*(.+\.#{@options[:include_extensions]})\s*\"/).flatten,
system: source.scan(/^\s*#include\s+<\s*(.+)\s*>/).flatten.map { |inc| "<#{inc}>" },
linkonly: source.scan(/^TEST_FILE\(\s*\"\s*(.+\.#{@options[:source_extensions]})\s*\"/).flatten
}
includes
end
def find_mocks(includes)
mock_headers = []
includes.each do |include_path|
include_file = File.basename(include_path)
mock_headers << include_path if include_file =~ /^#{@options[:mock_prefix]}.*#{@options[:mock_suffix]}\.h$/i
end
mock_headers
end
def find_setup_and_teardown(source)
@options[:has_setup] = source =~ /void\s+#{@options[:setup_name]}\s*\(/
@options[:has_teardown] = source =~ /void\s+#{@options[:teardown_name]}\s*\(/
@options[:has_suite_setup] ||= (source =~ /void\s+suiteSetUp\s*\(/)
@options[:has_suite_teardown] ||= (source =~ /int\s+suiteTearDown\s*\(int\s+([a-zA-Z0-9_])+\s*\)/) end
def create_header(output, mocks, testfile_includes = [])
output.puts('/* AUTOGENERATED FILE. DO NOT EDIT. */')
output.puts("\n/*=======Automagically Detected Files To Include=====*/")
output.puts("#include \"#{@options[:framework]}.h\"")
output.puts('#include "cmock.h"') unless mocks.empty?
if @options[:defines] && !@options[:defines].empty?
@options[:defines].each { |d| output.puts("#ifndef #{d}\n#define #{d}\n#endif /* #{d} */") }
end
if @options[:header_file] && !@options[:header_file].empty?
output.puts("#include \"#{File.basename(@options[:header_file])}\"")
else
@options[:includes].flatten.uniq.compact.each do |inc|
output.puts("#include #{inc.include?('<') ? inc : "\"#{inc}\""}")
end
testfile_includes.each do |inc|
output.puts("#include #{inc.include?('<') ? inc : "\"#{inc}\""}")
end
end
mocks.each do |mock|
output.puts("#include \"#{mock}\"")
end
output.puts('#include "CException.h"') if @options[:plugins].include?(:cexception)
return unless @options[:enforce_strict_ordering]
output.puts('')
output.puts('int GlobalExpectCount;')
output.puts('int GlobalVerifyOrder;')
output.puts('char* GlobalOrderError;')
end
def create_externs(output, tests, _mocks)
output.puts("\n/*=======External Functions This Runner Calls=====*/")
output.puts("extern void #{@options[:setup_name]}(void);")
output.puts("extern void #{@options[:teardown_name]}(void);")
output.puts("\n#ifdef __cplusplus\nextern \"C\"\n{\n#endif") if @options[:externc]
tests.each do |test|
output.puts("extern void #{test[:test]}(#{test[:call] || 'void'});")
end
output.puts("#ifdef __cplusplus\n}\n#endif") if @options[:externc]
output.puts('')
end
def create_mock_management(output, mock_headers)
output.puts("\n/*=======Mock Management=====*/")
output.puts('static void CMock_Init(void)')
output.puts('{')
if @options[:enforce_strict_ordering]
output.puts(' GlobalExpectCount = 0;')
output.puts(' GlobalVerifyOrder = 0;')
output.puts(' GlobalOrderError = NULL;')
end
mocks = mock_headers.map { |mock| File.basename(mock, '.*') }
mocks.each do |mock|
mock_clean = TypeSanitizer.sanitize_c_identifier(mock)
output.puts(" #{mock_clean}_Init();")
end
output.puts("}\n")
output.puts('static void CMock_Verify(void)')
output.puts('{')
mocks.each do |mock|
mock_clean = TypeSanitizer.sanitize_c_identifier(mock)
output.puts(" #{mock_clean}_Verify();")
end
output.puts("}\n")
output.puts('static void CMock_Destroy(void)')
output.puts('{')
mocks.each do |mock|
mock_clean = TypeSanitizer.sanitize_c_identifier(mock)
output.puts(" #{mock_clean}_Destroy();")
end
output.puts("}\n")
end
def create_setup(output)
return if @options[:has_setup]
output.puts("\n/*=======Setup (stub)=====*/")
output.puts("void #{@options[:setup_name]}(void) {}")
end
def create_teardown(output)
return if @options[:has_teardown]
output.puts("\n/*=======Teardown (stub)=====*/")
output.puts("void #{@options[:teardown_name]}(void) {}")
end
def create_suite_setup(output)
return if @options[:suite_setup].nil?
output.puts("\n/*=======Suite Setup=====*/")
output.puts('void suiteSetUp(void)')
output.puts('{')
output.puts(@options[:suite_setup])
output.puts('}')
end
def create_suite_teardown(output)
return if @options[:suite_teardown].nil?
output.puts("\n/*=======Suite Teardown=====*/")
output.puts('int suiteTearDown(int num_failures)')
output.puts('{')
output.puts(@options[:suite_teardown])
output.puts('}')
end
def create_reset(output)
output.puts("\n/*=======Test Reset Options=====*/")
output.puts("void #{@options[:test_reset_name]}(void);")
output.puts("void #{@options[:test_reset_name]}(void)")
output.puts('{')
output.puts(" #{@options[:teardown_name]}();")
output.puts(' CMock_Verify();')
output.puts(' CMock_Destroy();')
output.puts(' CMock_Init();')
output.puts(" #{@options[:setup_name]}();")
output.puts('}')
output.puts("void #{@options[:test_verify_name]}(void);")
output.puts("void #{@options[:test_verify_name]}(void)")
output.puts('{')
output.puts(' CMock_Verify();')
output.puts('}')
end
def create_run_test(output)
require 'erb'
template = ERB.new(File.read(File.join(__dir__, 'run_test.erb')), nil, '<>')
output.puts("\n" + template.result(binding))
end
def create_args_wrappers(output, tests)
return unless @options[:use_param_tests]
output.puts("\n/*=======Parameterized Test Wrappers=====*/")
tests.each do |test|
next if test[:args].nil? || test[:args].empty?
test[:args].each.with_index(1) do |args, idx|
output.puts("static void runner_args#{idx}_#{test[:test]}(void)")
output.puts('{')
output.puts(" #{test[:test]}(#{args});")
output.puts("}\n")
end
end
end
def create_main(output, filename, tests, used_mocks)
output.puts("\n/*=======MAIN=====*/")
main_name = @options[:main_name].to_sym == :auto ? "main_#{filename.gsub('.c', '')}" : (@options[:main_name]).to_s
if @options[:cmdline_args]
if main_name != 'main'
output.puts("#{@options[:main_export_decl]} int #{main_name}(int argc, char** argv);")
end
output.puts("#{@options[:main_export_decl]} int #{main_name}(int argc, char** argv)")
output.puts('{')
output.puts(' int parse_status = UnityParseOptions(argc, argv);')
output.puts(' if (parse_status != 0)')
output.puts(' {')
output.puts(' if (parse_status < 0)')
output.puts(' {')
output.puts(" UnityPrint(\"#{filename.gsub('.c', '')}.\");")
output.puts(' UNITY_PRINT_EOL();')
tests.each do |test|
if (!@options[:use_param_tests]) || test[:args].nil? || test[:args].empty?
output.puts(" UnityPrint(\" #{test[:test]}\");")
output.puts(' UNITY_PRINT_EOL();')
else
test[:args].each do |args|
output.puts(" UnityPrint(\" #{test[:test]}(#{args})\");")
output.puts(' UNITY_PRINT_EOL();')
end
end
end
output.puts(' return 0;')
output.puts(' }')
output.puts(' return parse_status;')
output.puts(' }')
else
main_return = @options[:omit_begin_end] ? 'void' : 'int'
if main_name != 'main'
output.puts("#{@options[:main_export_decl]} #{main_return} #{main_name}(void);")
end
output.puts("#{main_return} #{main_name}(void)")
output.puts('{')
end
output.puts(' suiteSetUp();') if @options[:has_suite_setup]
if @options[:omit_begin_end]
output.puts(" UnitySetTestFile(\"#{filename.gsub(/\\/, '\\\\\\')}\");")
else
output.puts(" UnityBegin(\"#{filename.gsub(/\\/, '\\\\\\')}\");")
end
tests.each do |test|
if (!@options[:use_param_tests]) || test[:args].nil? || test[:args].empty?
output.puts(" run_test(#{test[:test]}, \"#{test[:test]}\", #{test[:line_number]});")
else
test[:args].each.with_index(1) do |args, idx|
wrapper = "runner_args#{idx}_#{test[:test]}"
testname = "#{test[:test]}(#{args})".dump
output.puts(" run_test(#{wrapper}, #{testname}, #{test[:line_number]});")
end
end
end output.puts
output.puts(' CMock_Guts_MemFreeFinal();') unless used_mocks.empty?
if @options[:has_suite_teardown]
if @options[:omit_begin_end]
output.puts(' (void) suite_teardown(0);')
else
output.puts(' return suiteTearDown(UnityEnd());')
end
else
output.puts(' return UnityEnd();') unless @options[:omit_begin_end]
end
output.puts('}')
end
def create_h_file(output, filename, tests, testfile_includes, used_mocks)
filename = File.basename(filename).gsub(/[-\/\\\.\,\s]/, '_').upcase
output.puts('/* AUTOGENERATED FILE. DO NOT EDIT. */')
output.puts("#ifndef _#{filename}")
output.puts("#define _#{filename}\n\n")
output.puts("#include \"#{@options[:framework]}.h\"")
output.puts('#include "cmock.h"') unless used_mocks.empty?
@options[:includes].flatten.uniq.compact.each do |inc|
output.puts("#include #{inc.include?('<') ? inc : "\"#{inc}\""}")
end
testfile_includes.each do |inc|
output.puts("#include #{inc.include?('<') ? inc : "\"#{inc}\""}")
end
output.puts "\n"
tests.each do |test|
if test[:params].nil? || test[:params].empty?
output.puts("void #{test[:test]}(void);")
else
output.puts("void #{test[:test]}(#{test[:params]});")
end
end
output.puts("#endif\n\n")
end
end
if $0 == __FILE__
options = { includes: [] }
# parse out all the options first (these will all be removed as we go)
ARGV.reject! do |arg|
case arg
when '-cexception'
options[:plugins] = [:cexception]
true
when /\.*\.ya?ml$/
options = UnityTestRunnerGenerator.grab_config(arg)
true
when /--(\w+)=\"?(.*)\"?/
options[Regexp.last_match(1).to_sym] = Regexp.last_match(2)
true
when /\.*\.(?:hpp|hh|H|h)$/
options[:includes] << arg
true
else false
end
end
# make sure there is at least one parameter left (the input file)
unless ARGV[0]
puts ["\nusage: ruby #{__FILE__} (files) (options) input_test_file (output)",
"\n input_test_file - this is the C file you want to create a runner for",
' output - this is the name of the runner file to generate',
' defaults to (input_test_file)_Runner',
' files:',
' *.yml / *.yaml - loads configuration from here in :unity or :cmock',
' *.h - header files are added as #includes in runner', ' options:',
' -cexception - include cexception support',
' -externc - add extern "C" for cpp support',
' --setup_name="" - redefine setUp func name to something else',
' --teardown_name="" - redefine tearDown func name to something else',
' --main_name="" - redefine main func name to something else',
' --test_prefix="" - redefine test prefix from default test|spec|should',
' --test_reset_name="" - redefine resetTest func name to something else',
' --test_verify_name="" - redefine verifyTest func name to something else',
' --suite_setup="" - code to execute for setup of entire suite',
' --suite_teardown="" - code to execute for teardown of entire suite',
' --use_param_tests=1 - enable parameterized tests (disabled by default)',
' --omit_begin_end=1 - omit calls to UnityBegin and UnityEnd (disabled by default)',
' --header_file="" - path/name of test header file to generate too'].join("\n")
exit 1
end
# create the default test runner name if not specified
ARGV[1] = ARGV[0].gsub('.c', '_Runner.c') unless ARGV[1]
UnityTestRunnerGenerator.new(options).run(ARGV[0], ARGV[1])
end