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How to use capture_io method of Assertions Package
Best Minitest_ruby code snippet using Assertions.capture_io
test_rake_application.rb
Source:test_rake_application.rb 
...5 @app = Rake.application6 @app.options.rakelib = []7 end8 def test_constant_warning9 _, err = capture_io do @app.instance_eval { const_warning("Task") } end10 assert_match(/warning/i, err)11 assert_match(/deprecated/i, err)12 assert_match(/Task/i, err)13 end14 def test_display_tasks15 @app.options.show_tasks = :tasks16 @app.options.show_task_pattern = //17 @app.last_description = "COMMENT"18 @app.define_task(Rake::Task, "t")19 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end20 assert_match(/^rake t/, out)21 assert_match(/# COMMENT/, out)22 end23 def test_display_tasks_with_long_comments24 @app.terminal_columns = 8025 @app.options.show_tasks = :tasks26 @app.options.show_task_pattern = //27 @app.last_description = "1234567890" * 828 @app.define_task(Rake::Task, "t")29 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end30 assert_match(/^rake t/, out)31 assert_match(/# 12345678901234567890123456789012345678901234567890123456789012345\.\.\./, out)32 end33 def test_display_tasks_with_task_name_wider_than_tty_display34 @app.terminal_columns = 8035 @app.options.show_tasks = :tasks36 @app.options.show_task_pattern = //37 task_name = "task name" * 8038 @app.last_description = "something short"39 @app.define_task(Rake::Task, task_name )40 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end41 # Ensure the entire task name is output and we end up showing no description42 assert_match(/rake #{task_name} # .../, out)43 end44 def test_display_tasks_with_very_long_task_name_to_a_non_tty_shows_name_and_comment45 @app.options.show_tasks = :tasks46 @app.options.show_task_pattern = //47 @app.tty_output = false48 description = "something short"49 task_name = "task name" * 8050 @app.last_description = "something short"51 @app.define_task(Rake::Task, task_name )52 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end53 # Ensure the entire task name is output and we end up showing no description54 assert_match(/rake #{task_name} # #{description}/, out)55 end56 def test_display_tasks_with_long_comments_to_a_non_tty_shows_entire_comment57 @app.options.show_tasks = :tasks58 @app.options.show_task_pattern = //59 @app.tty_output = false60 @app.last_description = "1234567890" * 861 @app.define_task(Rake::Task, "t")62 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end63 assert_match(/^rake t/, out)64 assert_match(/# #{@app.last_description}/, out)65 end66 def test_display_tasks_with_long_comments_to_a_non_tty_with_columns_set_truncates_comments67 @app.terminal_columns = 8068 @app.options.show_tasks = :tasks69 @app.options.show_task_pattern = //70 @app.tty_output = false71 @app.last_description = "1234567890" * 872 @app.define_task(Rake::Task, "t")73 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end74 assert_match(/^rake t/, out)75 assert_match(/# 12345678901234567890123456789012345678901234567890123456789012345\.\.\./, out)76 end77 def test_describe_tasks78 @app.options.show_tasks = :describe79 @app.options.show_task_pattern = //80 @app.last_description = "COMMENT"81 @app.define_task(Rake::Task, "t")82 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end83 assert_match(/^rake t$/, out)84 assert_match(/^ {4}COMMENT$/, out)85 end86 def test_show_lines87 @app.options.show_tasks = :lines88 @app.options.show_task_pattern = //89 @app.last_description = "COMMENT"90 @app.define_task(Rake::Task, "t")91 @app['t'].locations << "HERE:1"92 out, = capture_io do @app.instance_eval { display_tasks_and_comments } end93 assert_match(/^rake t +[^:]+:\d+ *$/, out)94 end95 def test_finding_rakefile96 rakefile_default97 assert_match(/Rakefile/i, @app.instance_eval { have_rakefile })98 end99 def test_not_finding_rakefile100 @app.instance_eval { @rakefiles = ['NEVER_FOUND'] }101 assert( ! @app.instance_eval do have_rakefile end )102 assert_nil @app.rakefile103 end104 def test_load_rakefile105 rakefile_unittest106 @app.instance_eval do107 handle_options108 options.silent = true109 load_rakefile110 end111 assert_equal "rakefile", @app.rakefile.downcase112 assert_equal @tempdir, Dir.pwd113 end114 def test_load_rakefile_doesnt_print_rakefile_directory_from_same_dir115 rakefile_unittest116 _, err = capture_io do117 @app.instance_eval do118 # pretend we started from the unittest dir119 @original_dir = File.expand_path(".")120 raw_load_rakefile121 end122 end123 assert_empty err124 end125 def test_load_rakefile_from_subdir126 rakefile_unittest127 Dir.chdir 'subdir'128 @app.instance_eval do129 handle_options130 options.silent = true131 load_rakefile132 end133 assert_equal "rakefile", @app.rakefile.downcase134 assert_equal @tempdir, Dir.pwd135 end136 def test_load_rakefile_prints_rakefile_directory_from_subdir137 rakefile_unittest138 Dir.chdir 'subdir'139 app = Rake::Application.new140 app.options.rakelib = []141 _, err = capture_io do142 app.instance_eval do143 raw_load_rakefile144 end145 end146 assert_equal "(in #{@tempdir}\)\n", err147 end148 def test_load_rakefile_doesnt_print_rakefile_directory_from_subdir_if_silent149 rakefile_unittest150 Dir.chdir 'subdir'151 _, err = capture_io do152 @app.instance_eval do153 handle_options154 options.silent = true155 raw_load_rakefile156 end157 end158 assert_empty err159 end160 def test_load_rakefile_not_found161 Dir.chdir @tempdir162 ENV['RAKE_SYSTEM'] = 'not_exist'163 @app.instance_eval do164 handle_options165 options.silent = true166 end167 ex = assert_raises(RuntimeError) do168 @app.instance_eval do raw_load_rakefile end169 end170 assert_match(/no rakefile found/i, ex.message)171 end172 def test_load_from_system_rakefile173 rake_system_dir174 @app.instance_eval do175 handle_options176 options.silent = true177 options.load_system = true178 options.rakelib = []179 load_rakefile180 end181 assert_equal @system_dir, @app.system_dir182 assert_nil @app.rakefile183 rescue SystemExit184 flunk 'failed to load rakefile'185 end186 def test_load_from_calculated_system_rakefile187 rakefile_default188 def @app.standard_system_dir189 "__STD_SYS_DIR__"190 end191 ENV['RAKE_SYSTEM'] = nil192 @app.instance_eval do193 handle_options194 options.silent = true195 options.load_system = true196 options.rakelib = []197 load_rakefile198 end199 assert_equal "__STD_SYS_DIR__", @app.system_dir200 rescue SystemExit201 flunk 'failed to find system rakefile'202 end203 def test_terminal_columns204 old_RAKE_COLUMNS = ENV['RAKE_COLUMNS']205 ENV['RAKE_COLUMNS'] = '42'206 app = Rake::Application.new207 assert_equal 42, app.terminal_columns208 ensure209 if old_RAKE_COLUMNS then210 ENV['RAKE_COLUMNS'].delete211 else212 ENV['RAKE_COLUMNS'] = old_RAKE_COLUMNS213 end214 end215 def test_windows216 assert ! (@app.windows? && @app.unix?)217 end218 def test_loading_imports219 loader = util_loader220 @app.instance_eval do221 add_loader("dummy", loader)222 add_import("x.dummy")223 load_imports224 end225 # HACK no assertions226 end227 def test_building_imported_files_on_demand228 loader = util_loader229 @app.instance_eval do230 intern(Rake::Task, "x.dummy").enhance do loader.make_dummy end231 add_loader("dummy", loader)232 add_import("x.dummy")233 load_imports234 end235 # HACK no assertions236 end237 def test_handle_options_should_strip_options_from_ARGV238 assert !@app.options.trace239 valid_option = '--trace'240 ARGV.clear241 ARGV << valid_option242 @app.handle_options243 assert !ARGV.include?(valid_option)244 assert @app.options.trace245 end246 def test_good_run247 ran = false248 ARGV << '--rakelib=""'249 @app.options.silent = true250 @app.instance_eval do251 intern(Rake::Task, "default").enhance { ran = true }252 end253 rakefile_default254 out, err = capture_io do255 @app.run256 end257 assert ran258 assert_empty err259 assert_equal "DEFAULT\n", out260 end261 def test_display_task_run262 ran = false263 ARGV.clear264 ARGV << '-f' << '-s' << '--tasks' << '--rakelib=""'265 @app.last_description = "COMMENT"266 @app.define_task(Rake::Task, "default")267 out, = capture_io { @app.run }268 assert @app.options.show_tasks269 assert ! ran270 assert_match(/rake default/, out)271 assert_match(/# COMMENT/, out)272 end273 def test_display_prereqs274 ran = false275 ARGV.clear276 ARGV << '-f' << '-s' << '--prereqs' << '--rakelib=""'277 @app.last_description = "COMMENT"278 t = @app.define_task(Rake::Task, "default")279 t.enhance([:a, :b])280 @app.define_task(Rake::Task, "a")281 @app.define_task(Rake::Task, "b")282 out, = capture_io { @app.run }283 assert @app.options.show_prereqs284 assert ! ran285 assert_match(/rake a$/, out)286 assert_match(/rake b$/, out)287 assert_match(/rake default\n( *(a|b)\n){2}/m, out)288 end289 def test_bad_run290 @app.intern(Rake::Task, "default").enhance { fail }291 ARGV.clear292 ARGV << '-f' << '-s' << '--rakelib=""'293 assert_raises(SystemExit) {294 _, err = capture_io { @app.run }295 assert_match(/see full trace/, err)296 }297 ensure298 ARGV.clear299 end300 def test_bad_run_with_trace301 @app.intern(Rake::Task, "default").enhance { fail }302 ARGV.clear303 ARGV << '-f' << '-s' << '-t'304 assert_raises(SystemExit) {305 _, err = capture_io { @app.run }306 refute_match(/see full trace/, err)307 }308 ensure309 ARGV.clear310 end311 def test_run_with_bad_options312 @app.intern(Rake::Task, "default").enhance { fail }313 ARGV.clear314 ARGV << '-f' << '-s' << '--xyzzy'315 assert_raises(SystemExit) {316 capture_io { @app.run }317 }318 ensure319 ARGV.clear320 end321 def test_deprecation_message322 _, err = capture_io do323 @app.deprecate("a", "b", "c")324 end325 assert_match(/'a' is deprecated/i, err)326 assert_match(/use 'b' instead/i, err)327 assert_match(/at c$/i, err)328 end329 def test_standard_exception_handling_invalid_option330 out, err = capture_io do331 e = assert_raises SystemExit do332 @app.standard_exception_handling do333 raise OptionParser::InvalidOption, 'blah'334 end335 end336 assert_equal 1, e.status337 end338 assert_empty out339 assert_equal "invalid option: blah\n", err340 end341 def test_standard_exception_handling_other342 out, err = capture_io do343 e = assert_raises SystemExit do344 @app.standard_exception_handling do345 raise 'blah'346 end347 end348 assert_equal 1, e.status349 end350 assert_empty out351 assert_match "rake aborted!\n", err352 assert_match "blah\n", err353 end354 def test_standard_exception_handling_system_exit355 out, err = capture_io do356 e = assert_raises SystemExit do357 @app.standard_exception_handling do358 exit 0359 end360 end361 assert_equal 0, e.status362 end363 assert_empty out364 assert_empty err365 end366 def test_standard_exception_handling_system_exit_nonzero367 out, err = capture_io do368 e = assert_raises SystemExit do369 @app.standard_exception_handling do370 exit 5371 end372 end373 assert_equal 5, e.status374 end375 assert_empty out376 assert_empty err377 end378 def util_loader379 loader = Object.new380 loader.instance_variable_set :@load_called, false381 def loader.load arg...
capture_io
Using AI Code Generation
1 assert_output("Hello World2") { puts "Hello World" }3 assert_output(nil, "Hello World4") { warn "Hello World" }5 assert_output("Hello World6") { warn "Hello World"; puts "Hello World" }7 assert_output("Hello World8 assert_output("Hello World9 assert_output("Hello World10 assert_output("Hello World
capture_io
Using AI Code Generation
1 assert_equal("hello2", capture_io { puts "hello" })3 assert_equal("hello4", capture_io { $stderr.puts "hello" })5 assert_equal("hello6", capture_io { print "hello" })7 assert_equal("hello8", capture_io { $stderr.print "hello" })
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