Blob of rspec/lib/spec/runner/option_parser.rb (raw blob data)

1 require 'optparse'
2 require 'stringio'
3
4 module Spec
5 module Runner
6 class OptionParser < ::OptionParser
7 class << self
8 def parse(args, err, out)
9 parser = new(err, out)
10 parser.parse(args)
11 parser.options
12 end
13 end
14
15 attr_reader :options
16
17 OPTIONS = {
18 :pattern => ["-p", "--pattern [PATTERN]","Limit files loaded to those matching this pattern. Defaults to '**/*_spec.rb'",
19 "Separate multiple patterns with commas.",
20 "Applies only to directories named on the command line (files",
21 "named explicitly on the command line will be loaded regardless)."],
22 :diff => ["-D", "--diff [FORMAT]","Show diff of objects that are expected to be equal when they are not",
23 "Builtin formats: unified|u|context|c",
24 "You can also specify a custom differ class",
25 "(in which case you should also specify --require)"],
26 :colour => ["-c", "--colour", "--color", "Show coloured (red/green) output"],
27 :example => ["-e", "--example [NAME|FILE_NAME]", "Execute example(s) with matching name(s). If the argument is",
28 "the path to an existing file (typically generated by a previous",
29 "run using --format failing_examples:file.txt), then the examples",
30 "on each line of thatfile will be executed. If the file is empty,",
31 "all examples will be run (as if --example was not specified).",
32 " ",
33 "If the argument is not an existing file, then it is treated as",
34 "an example name directly, causing RSpec to run just the example",
35 "matching that name"],
36 :specification => ["-s", "--specification [NAME]", "DEPRECATED - use -e instead", "(This will be removed when autotest works with -e)"],
37 :line => ["-l", "--line LINE_NUMBER", Integer, "Execute behaviout or specification at given line.",
38 "(does not work for dynamically generated specs)"],
39 :format => ["-f", "--format FORMAT[:WHERE]","Specifies what format to use for output. Specify WHERE to tell",
40 "the formatter where to write the output. All built-in formats",
41 "expect WHERE to be a file name, and will write to STDOUT if it's",
42 "not specified. The --format option may be specified several times",
43 "if you want several outputs",
44 " ",
45 "Builtin formats for examples: ",
46 "progress|p : Text progress",
47 "profile|o : Text progress with profiling of 10 slowest examples",
48 "specdoc|s : Example doc as text",
49 "html|h : A nice HTML report",
50 "failing_examples|e : Write all failing examples - input for --example",
51 "failing_example_groups|g : Write all failing example groups - input for --example",
52 " ",
53 "Builtin formats for stories: ",
54 "plain|p : Plain Text",
55 "html|h : A nice HTML report",
56 " ",
57 "FORMAT can also be the name of a custom formatter class",
58 "(in which case you should also specify --require to load it)"],
59 :require => ["-r", "--require FILE", "Require FILE before running specs",
60 "Useful for loading custom formatters or other extensions.",
61 "If this option is used it must come before the others"],
62 :backtrace => ["-b", "--backtrace", "Output full backtrace"],
63 :loadby => ["-L", "--loadby STRATEGY", "Specify the strategy by which spec files should be loaded.",
64 "STRATEGY can currently only be 'mtime' (File modification time)",
65 "By default, spec files are loaded in alphabetical order if --loadby",
66 "is not specified."],
67 :reverse => ["-R", "--reverse", "Run examples in reverse order"],
68 :timeout => ["-t", "--timeout FLOAT", "Interrupt and fail each example that doesn't complete in the",
69 "specified time"],
70 :heckle => ["-H", "--heckle CODE", "If all examples pass, this will mutate the classes and methods",
71 "identified by CODE little by little and run all the examples again",
72 "for each mutation. The intent is that for each mutation, at least",
73 "one example *should* fail, and RSpec will tell you if this is not the",
74 "case. CODE should be either Some::Module, Some::Class or",
75 "Some::Fabulous#method}"],
76 :dry_run => ["-d", "--dry-run", "Invokes formatters without executing the examples."],
77 :options_file => ["-O", "--options PATH", "Read options from a file"],
78 :generate_options => ["-G", "--generate-options PATH", "Generate an options file for --options"],
79 :runner => ["-U", "--runner RUNNER", "Use a custom Runner."],
80 :drb => ["-X", "--drb", "Run examples via DRb. (For example against script/spec_server)"],
81 :version => ["-v", "--version", "Show version"],
82 :help => ["-h", "--help", "You're looking at it"]
83 }
84
85 def initialize(err, out)
86 super()
87 @error_stream = err
88 @out_stream = out
89 @options = Options.new(@error_stream, @out_stream)
90
91 @file_factory = File
92
93 self.banner = "Usage: spec (FILE|DIRECTORY|GLOB)+ [options]"
94 self.separator ""
95 on(*OPTIONS[:pattern]) {|pattern| @options.filename_pattern = pattern}
96 on(*OPTIONS[:diff]) {|diff| @options.parse_diff(diff)}
97 on(*OPTIONS[:colour]) {@options.colour = true}
98 on(*OPTIONS[:example]) {|example| @options.parse_example(example)}
99 on(*OPTIONS[:specification]) {|example| @options.parse_example(example)}
100 on(*OPTIONS[:line]) {|line_number| @options.line_number = line_number.to_i}
101 on(*OPTIONS[:format]) {|format| @options.parse_format(format)}
102 on(*OPTIONS[:require]) {|requires| invoke_requires(requires)}
103 on(*OPTIONS[:backtrace]) {@options.backtrace_tweaker = NoisyBacktraceTweaker.new}
104 on(*OPTIONS[:loadby]) {|loadby| @options.loadby = loadby}
105 on(*OPTIONS[:reverse]) {@options.reverse = true}
106 on(*OPTIONS[:timeout]) {|timeout| @options.timeout = timeout.to_f}
107 on(*OPTIONS[:heckle]) {|heckle| @options.load_heckle_runner(heckle)}
108 on(*OPTIONS[:dry_run]) {@options.dry_run = true}
109 on(*OPTIONS[:options_file]) {|options_file| parse_options_file(options_file)}
110 on(*OPTIONS[:generate_options]) {|options_file|}
111 on(*OPTIONS[:runner]) {|runner| @options.user_input_for_runner = runner}
112 on(*OPTIONS[:drb]) {}
113 on(*OPTIONS[:version]) {parse_version}
114 on_tail(*OPTIONS[:help]) {parse_help}
115 end
116
117 def order!(argv, &blk)
118 @argv = argv
119 @options.argv = @argv.dup
120 return if parse_generate_options
121 return if parse_drb
122
123 super(@argv) do |file|
124 @options.files << file
125 blk.call(file) if blk
126 end
127
128 @options
129 end
130
131 protected
132 def invoke_requires(requires)
133 requires.split(",").each do |file|
134 require file
135 end
136 end
137
138 def parse_options_file(options_file)
139 option_file_args = IO.readlines(options_file).map {|l| l.chomp.split " "}.flatten
140 @argv.push(*option_file_args)
141 # TODO - this is a brute force solution to http://rspec.lighthouseapp.com/projects/5645/tickets/293.
142 # Let's look for a cleaner way. Might not be one. But let's look. If not, perhaps
143 # this can be moved to a different method to indicate the special handling for drb?
144 parse_drb(@argv)
145 end
146
147 def parse_generate_options
148 # Remove the --generate-options option and the argument before writing to file
149 options_file = nil
150 ['-G', '--generate-options'].each do |option|
151 if index = @argv.index(option)
152 @argv.delete_at(index)
153 options_file = @argv.delete_at(index)
154 end
155 end
156
157 if options_file
158 write_generated_options(options_file)
159 return true
160 else
161 return false
162 end
163 end
164
165 def write_generated_options(options_file)
166 File.open(options_file, 'w') do |io|
167 io.puts @argv.join("\n")
168 end
169 @out_stream.puts "\nOptions written to #{options_file}. You can now use these options with:"
170 @out_stream.puts "spec --options #{options_file}"
171 @options.examples_should_not_be_run
172 end
173
174 def parse_drb(argv = nil)
175 argv ||= @options.argv # TODO - see note about about http://rspec.lighthouseapp.com/projects/5645/tickets/293
176 is_drb = false
177 is_drb ||= argv.delete(OPTIONS[:drb][0])
178 is_drb ||= argv.delete(OPTIONS[:drb][1])
179 return false unless is_drb
180 @options.examples_should_not_be_run
181 DrbCommandLine.run(
182 self.class.parse(argv, @error_stream, @out_stream)
183 )
184 true
185 end
186
187 def parse_version
188 @out_stream.puts ::Spec::VERSION::DESCRIPTION
189 exit if stdout?
190 end
191
192 def parse_help
193 @out_stream.puts self
194 exit if stdout?
195 end
196
197 def stdout?
198 @out_stream == $stdout
199 end
200 end
201 end
202 end