新增一个档案 leap_year.rb
touch leap_year.rb

新增一个档案 .rspec
touch .rspec

新增一个档案 leap_year_spec.rb
touch leap_year spec.rb

liudezhi@ip-192-168-43-20 leap_year % irb
2.6.2 :001 > require_relative './leap_year'
is_leap_year?(2016)   # => 应该得到 true
is_leap_year?(2017)   # => 应该得到 false
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):1
        1: from (irb):1:in `require_relative'
LoadError (cannot load such file -- /Users/liudezhi/leap_year/leap_year)
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):2
        1: from (irb):2:in `rescue in irb_binding'
NoMethodError (undefined method `is_leap_year?' for main:Object)
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):3
        1: from (irb):3:in `rescue in irb_binding'
NoMethodError (undefined method `is_leap_year?' for main:Object)
2.6.2 :004 > require_relative './leap_year'
Traceback (most recent call last):
        6: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        3: from (irb):4
        2: from (irb):4:in `rescue in irb_binding'
        1: from (irb):4:in `require_relative'
LoadError (cannot load such file -- /Users/liudezhi/leap_year/leap_year)
2.6.2 :005 > exit
liudezhi@ip-192-168-43-20 leap_year % irb
2.6.2 :001 > require_relative './leap_year'
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):1
        1: from (irb):1:in `require_relative'
LoadError (cannot load such file -- /Users/liudezhi/leap_year/leap_year)
2.6.2 :002 > 1+2
 => 3 
2.6.2 :003 > require_relative './leap_year'
is_leap_year?(2016)   # => 应该得到 true
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):3
        1: from (irb):3:in `require_relative'
LoadError (cannot load such file -- /Users/liudezhi/leap_year/leap_year)
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):4
        1: from (irb):4:in `rescue in irb_binding'
NoMethodError (undefined method `is_leap_year?' for main:Object)
2.6.2 :005 > exit
liudezhi@ip-192-168-43-20 leap_year % gem install rspec
Fetching rspec-3.10.0.gem
Fetching rspec-support-3.10.2.gem
Fetching rspec-mocks-3.10.2.gem
Fetching rspec-core-3.10.1.gem
Fetching diff-lcs-1.4.4.gem
Fetching rspec-expectations-3.10.1.gem
Successfully installed rspec-support-3.10.2
Successfully installed rspec-core-3.10.1
Successfully installed diff-lcs-1.4.4
Successfully installed rspec-expectations-3.10.1
Successfully installed rspec-mocks-3.10.2
Successfully installed rspec-3.10.0
Parsing documentation for rspec-support-3.10.2
Installing ri documentation for rspec-support-3.10.2
Parsing documentation for rspec-core-3.10.1
Installing ri documentation for rspec-core-3.10.1
Parsing documentation for diff-lcs-1.4.4
Installing ri documentation for diff-lcs-1.4.4
Parsing documentation for rspec-expectations-3.10.1
Installing ri documentation for rspec-expectations-3.10.1
Parsing documentation for rspec-mocks-3.10.2
Installing ri documentation for rspec-mocks-3.10.2
Parsing documentation for rspec-3.10.0
Installing ri documentation for rspec-3.10.0
Done installing documentation for rspec-support, rspec-core, diff-lcs, rspec-expectations, rspec-mocks, rspec after 5 seconds
6 gems installed
liudezhi@ip-192-168-43-20 leap_year % rails g controller .rspec
Running via Spring preloader in process 66128
Traceback (most recent call last):
    37: from -e:1:in `<main>'
    36: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    35: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    34: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/activesupport-5.2.6/lib/active_support/dependencies.rb:285:in `load'
    33: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/activesupport-5.2.6/lib/active_support/dependencies.rb:257:in `load_dependency'
    32: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/activesupport-5.2.6/lib/active_support/dependencies.rb:285:in `block in load'
    31: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:59:in `load'
    30: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:59:in `load'
    29: from /Users/liudezhi/leap_year/bin/rails:9:in `<main>'
    28: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/activesupport-5.2.6/lib/active_support/dependencies.rb:291:in `require'
    27: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/activesupport-5.2.6/lib/active_support/dependencies.rb:257:in `load_dependency'
    26: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/activesupport-5.2.6/lib/active_support/dependencies.rb:291:in `block in require'
    25: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
    24: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
    23: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
    22: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
    21: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
    20: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/commands.rb:18:in `<main>'
    19: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/command.rb:46:in `invoke'
    18: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/command/base.rb:69:in `perform'
    17: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor.rb:392:in `dispatch'
    16: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/invocation.rb:127:in `invoke_command'
    15: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/command.rb:27:in `run'
    14: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/commands/generate/generate_command.rb:26:in `perform'
    13: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/generators.rb:276:in `invoke'
    12: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/base.rb:485:in `start'
    11: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/group.rb:232:in `dispatch'
    10: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/invocation.rb:134:in `invoke_all'
     9: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/invocation.rb:134:in `map'
     8: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/invocation.rb:134:in `each'
     7: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/invocation.rb:134:in `block in invoke_all'
     6: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/invocation.rb:127:in `invoke_command'
     5: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/thor-1.1.0/lib/thor/command.rb:27:in `run'
     4: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/generators/named_base.rb:226:in `block in check_class_collision'
     3: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/generators/base.rb:258:in `class_collisions'
     2: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/generators/base.rb:258:in `each'
     1: from /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/generators/base.rb:267:in `block in class_collisions'
/Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/railties-5.2.6/lib/rails/generators/base.rb:267:in `const_defined?': wrong constant name .rspecController (NameError)
liudezhi@ip-192-168-43-20 leap_year % rails g controller leap_year_spec   
Running via Spring preloader in process 66217
      create  app/controllers/leap_year_spec_controller.rb
      invoke  erb
      create    app/views/leap_year_spec
      invoke  test_unit
      create    test/controllers/leap_year_spec_controller_test.rb
      invoke  helper
      create    app/helpers/leap_year_spec_helper.rb
      invoke    test_unit
      invoke  assets
      invoke    coffee
      create      app/assets/javascripts/leap_year_spec.coffee
      invoke    scss
      create      app/assets/stylesheets/leap_year_spec.scss
liudezhi@ip-192-168-43-20 leap_year % .rspec
zsh: command not found: .rspec
liudezhi@ip-192-168-43-20 leap_year % rails g .rspec
Running via Spring preloader in process 66607
Could not find generator '.rspec'. Maybe you meant 'helper', 'model' or 'task'
Run `rails generate --help` for more options.
liudezhi@ip-192-168-43-20 leap_year % rails g controller rails g rspec
Running via Spring preloader in process 66803
      create  app/controllers/rails_controller.rb
       route  get 'rails/g'
get 'rails/rspec'
      invoke  erb
      create    app/views/rails
      create    app/views/rails/g.html.erb
      create    app/views/rails/rspec.html.erb
      invoke  test_unit
      create    test/controllers/rails_controller_test.rb
      invoke  helper
      create    app/helpers/rails_helper.rb
      invoke    test_unit
      invoke  assets
      invoke    coffee
      create      app/assets/javascripts/rails.coffee
      invoke    scss
      create      app/assets/stylesheets/rails.scss
liudezhi@ip-192-168-43-20 leap_year % gem install rspec


Successfully installed rspec-3.10.0
Parsing documentation for rspec-3.10.0
Done installing documentation for rspec after 0 seconds
1 gem installed
liudezhi@ip-192-168-43-20 leap_year % rspec leap_year_spec.rb

An error occurred while loading ./leap_year_spec.rb.
Failure/Error: __send__(method, file)

LoadError:
  cannot load such file -- /Users/liudezhi/leap_year/leap_year_spec.rb
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:2112:in `load'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:2112:in `load_file_handling_errors'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1615:in `block in load_spec_files'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1613:in `each'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1613:in `load_spec_files'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:102:in `setup'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:86:in `run'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:71:in `run'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:45:in `invoke'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/exe/rspec:4:in `<top (required)>'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/rspec:23:in `load'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/rspec:23:in `<main>'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/ruby_executable_hooks:24:in `eval'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/ruby_executable_hooks:24:in `<main>'
# 
#   Showing full backtrace because every line was filtered out.
#   See docs for RSpec::Configuration#backtrace_exclusion_patterns and
#   RSpec::Configuration#backtrace_inclusion_patterns for more information.
No examples found.


Finished in 0.00008 seconds (files took 0.27117 seconds to load)
0 examples, 0 failures, 1 error occurred outside of examples

liudezhi@ip-192-168-43-20 leap_year % rspec leap_year_spec.rb

An error occurred while loading ./leap_year_spec.rb.
Failure/Error: __send__(method, file)

LoadError:
  cannot load such file -- /Users/liudezhi/leap_year/leap_year_spec.rb
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:2112:in `load'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:2112:in `load_file_handling_errors'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1615:in `block in load_spec_files'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1613:in `each'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1613:in `load_spec_files'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:102:in `setup'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:86:in `run'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:71:in `run'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:45:in `invoke'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/exe/rspec:4:in `<top (required)>'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/rspec:23:in `load'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/rspec:23:in `<main>'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/ruby_executable_hooks:24:in `eval'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/ruby_executable_hooks:24:in `<main>'
# 
#   Showing full backtrace because every line was filtered out.
#   See docs for RSpec::Configuration#backtrace_exclusion_patterns and
#   RSpec::Configuration#backtrace_inclusion_patterns for more information.
No examples found.


Finished in 0.00007 seconds (files took 0.25665 seconds to load)
0 examples, 0 failures, 1 error occurred outside of examples

liudezhi@ip-192-168-43-20 leap_year % gem install rspec
Successfully installed rspec-3.10.0
Parsing documentation for rspec-3.10.0
Done installing documentation for rspec after 0 seconds
1 gem installed
liudezhi@ip-192-168-43-20 leap_year % touch app/.rspec
liudezhi@ip-192-168-43-20 leap_year % touch .rspec
liudezhi@ip-192-168-43-20 leap_year % rspec leap_year_spec.rb

An error occurred while loading ./leap_year_spec.rb.
Failure/Error: __send__(method, file)

LoadError:
  cannot load such file -- /Users/liudezhi/leap_year/leap_year_spec.rb
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:2112:in `load'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:2112:in `load_file_handling_errors'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1615:in `block in load_spec_files'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1613:in `each'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/configuration.rb:1613:in `load_spec_files'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:102:in `setup'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:86:in `run'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:71:in `run'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/lib/rspec/core/runner.rb:45:in `invoke'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/gems/rspec-core-3.10.1/exe/rspec:4:in `<top (required)>'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/rspec:23:in `load'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/rspec:23:in `<main>'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/ruby_executable_hooks:24:in `eval'
# /Users/liudezhi/.rvm/gems/ruby-2.6.2/bin/ruby_executable_hooks:24:in `<main>'
# 
#   Showing full backtrace because every line was filtered out.
#   See docs for RSpec::Configuration#backtrace_exclusion_patterns and
#   RSpec::Configuration#backtrace_inclusion_patterns for more information.
No examples found.

Finished in 0.00006 seconds (files took 0.26043 seconds to load)
0 examples, 0 failures, 1 error occurred outside of examples

liudezhi@ip-192-168-43-20 leap_year % touch app/leap_year
liudezhi@ip-192-168-43-20 leap_year % touch app/leap_year.rb
liudezhi@ip-192-168-43-20 leap_year % irb
2.6.2 :001 > require_relative './leap_year'
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):1
        1: from (irb):1:in `require_relative'
LoadError (cannot load such file -- /Users/liudezhi/leap_year/leap_year)
2.6.2 :002 > exit
liudezhi@ip-192-168-43-20 leap_year % irb
2.6.2 :001 > require_relative './leap_year'
Traceback (most recent call last):
        5: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `<main>'
        4: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/bin/irb:23:in `load'
        3: from /Users/liudezhi/.rvm/rubies/ruby-2.6.2/lib/ruby/gems/2.6.0/gems/irb-1.0.0/exe/irb:11:in `<top (required)>'
        2: from (irb):1
        1: from (irb):1:in `require_relative'
LoadError (cannot load such file -- /Users/liudezhi/leap_year/leap_year)
2.6.2 :003 > exit
liudezhi@ip-192-168-43-20 leap_year % touch leap_year_spec.rb
liudezhi@ip-192-168-43-20 leap_year % touch leap_year.rb
liudezhi@ip-192-168-43-20 leap_year % irb
2.6.2 :001 > exit
liudezhi@ip-192-168-43-20 leap_year % rspec leap_year_spec.rb

Leap Year
  2016 is leap year
  2017 is common year
  2100 is common year
  2400 is leap year (FAILED - 1)

Failures:

  1) Leap Year 2400 is leap year
     Failure/Error: expect(result).to eq(true)    # 检查结果应该要是 true
     
       expected: true
            got: false
     
       (compared using ==)
     
       Diff:
       @@ -1 +1 @@
       -true
       +false
       
     # ./leap_year_spec.rb:28:in `block (2 levels) in <top (required)>'

Finished in 0.02836 seconds (files took 0.24443 seconds to load)
4 examples, 1 failure

Failed examples:

rspec ./leap_year_spec.rb:25 # Leap Year 2400 is leap year

Last login: Mon Jun 14 12:07:52 on ttys004
liudezhi@Udizy ~ % cd leap_year
liudezhi@Udizy leap_year % irb
2.6.2 :001 > require_relative './leap_year'
 => true 
2.6.2 :002 > is_leap_year?(2016)
 => true 
2.6.2 :003 > is_leap_year?(2017)
 => false 
2.6.2 :004 > is_leap_year?(2100)
 => false 
2.6.2 :005 > 

liudezhi@Udizy leap_year % rspec leap_year_spec.rb

Leap Year
  2016 is leap year
  2017 is common year
  2100 is common year
  2400 is leap year

Finished in 0.00365 seconds (files took 0.18763 seconds to load)
4 examples, 0 failures

liudezhi@Udizy leap_year %