My hw 05

HW03/Dmitry_Susha/.rspec

@@ -0,0 +1 @@
+--require spec_helper

HW03/Dmitry_Susha/dmitry_susha_hw_03_t_01.rb

@@ -2,6 +2,8 @@
 
 class Homework3
   def task1(logs)
+    return '' unless logs.is_a?(String)
+
     logs.split("\n").select { |string| string.downcase.include?('error') }[0].to_s
   end
 end

HW03/Dmitry_Susha/dmitry_susha_hw_03_t_02.rb

@@ -3,9 +3,10 @@
 class Homework3
   FORMAT_STRING = %r{^(?:[0-9]{1,3}\.){3}[0-9]{1,3} - - \[\d*/\w*/\d*:\d*:\d*:\d* \+\d*\] "\w* /\w*/\d/\w*}
   def task2(logs)
+    return [] unless logs.is_a?(String)
+
     lines = logs.split("\n")
-    lines.select { |string| check_format?(string) }
-         .map { |string| make_output(string) }
+    lines.select { |string| check_format?(string) }.map { |string| make_output(string) }
   end
 
   private

HW03/Dmitry_Susha/dmitry_susha_hw_03_t_03.rb

@@ -4,6 +4,8 @@
 class Homework3
   START_EVENT_LINE = /Calling core with action:/
   def task3(logs)
+    return '0' unless logs.is_a?(String)
+
     lines = logs.split("\n")
     start_event_lines = lines.select { |string| string.match?(START_EVENT_LINE) }
     return '0' if start_event_lines.size < 2

HW03/Dmitry_Susha/dmitry_susha_hw_03_t_04.rb

@@ -2,6 +2,8 @@
 
 class Homework3
   def task4(string)
+    return { letters: 0, digits: 0 } unless string.is_a?(String)
+
     letters = string.count('a-zA-Z')
     digits = string.count('0-9')
     { letters: letters, digits: digits }

HW03/Dmitry_Susha/spec/dmitry_susha_hw_03_t_01_spec.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+RSpec.describe Homework3 do
+  subject { described_class.new }
+
+  describe 'task 1' do
+    context 'when text wrong' do
+      it 'returns an empty string' do
+        expect(subject.task1('sadhfksjadfhksahdf')).to eq('')
+      end
+    end
+
+    context 'when log is array' do
+      it 'returns an empty string' do
+        expect(subject.task1([])).to eq('')
+      end
+    end
+
+    context 'when log is hash' do
+      it 'returns an empty string' do
+        expect(subject.task1({})).to eq('')
+      end
+    end
+
+    context 'when log is nil' do
+      it 'returns an empty string' do
+        expect(subject.task1(nil)).to eq('')
+      end
+    end
+
+    context 'when log is number' do
+      it 'returns an empty string' do
+        expect(subject.task1(1)).to eq('')
+      end
+    end
+  end
+end

HW03/Dmitry_Susha/spec/dmitry_susha_hw_03_t_02_spec.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+RSpec.describe Homework3 do
+  subject { described_class.new }
+
+  describe 'task 2' do
+    context 'when text is wrong' do
+      it 'returns an  empty array' do
+        expect(subject.task2('sadhfksjadfhksahdf')).to eq([])
+      end
+    end
+
+    context 'when log is array' do
+      it 'returns an empty array' do
+        expect(subject.task2([])).to eq([])
+      end
+    end
+
+    context 'when log is hash' do
+      it 'returns an empty array' do
+        expect(subject.task2({})).to eq([])
+      end
+    end
+
+    context 'when log is nil' do
+      it 'returns an empty array' do
+        expect(subject.task2(nil)).to eq([])
+      end
+    end
+
+    context 'when log is number' do
+      it 'returns an empty array' do
+        expect(subject.task2(1)).to eq([])
+      end
+    end
+  end
+end

HW03/Dmitry_Susha/spec/dmitry_susha_hw_03_t_03_spec.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+RSpec.describe Homework3 do
+  subject { described_class.new }
+
+  describe 'task 3' do
+    context 'when text wrong' do
+      it 'returns "0"' do
+        expect(subject.task3('sadhfksjadfhksahdf')).to eq('0')
+      end
+    end
+
+    context 'when log is array' do
+      it 'returns "0"' do
+        expect(subject.task3([])).to eq('0')
+      end
+    end
+
+    context 'when log is hash' do
+      it 'returns "0"' do
+        expect(subject.task3({})).to eq('0')
+      end
+    end
+
+    context 'when log is nil' do
+      it 'returns "0"' do
+        expect(subject.task3(nil)).to eq('0')
+      end
+    end
+
+    context 'when log is number' do
+      it 'returns "0"' do
+        expect(subject.task3(1)).to eq('0')
+      end
+    end
+  end
+end

HW03/Dmitry_Susha/spec/dmitry_susha_hw_03_t_04_spec.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+RSpec.describe Homework3 do
+  subject { described_class.new }
+
+  describe 'task 4' do
+    context 'when log is array' do
+      it 'returns { letters: 0, digits: 0 }' do
+        expect(subject.task4([])).to eq({ letters: 0, digits: 0 })
+      end
+    end
+
+    context 'when log is hash' do
+      it 'returns { letters: 0, digits: 0 }' do
+        expect(subject.task4({})).to eq({ letters: 0, digits: 0 })
+      end
+    end
+
+    context 'when log is nil' do
+      it 'returns { letters: 0, digits: 0 }' do
+        expect(subject.task4(nil)).to eq({ letters: 0, digits: 0 })
+      end
+    end
+
+    context 'when log is number' do
+      it 'returns { letters: 0, digits: 0 }' do
+        expect(subject.task4(1)).to eq({ letters: 0, digits: 0 })
+      end
+    end
+  end
+end

HW03/Dmitry_Susha/spec/spec_helper.rb

@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+require_relative '../dmitry_susha_hw_03_t_01'
+require_relative '../dmitry_susha_hw_03_t_02'
+require_relative '../dmitry_susha_hw_03_t_03'
+require_relative '../dmitry_susha_hw_03_t_04'
+
+# This file was generated by the `rspec --init` command. Conventionally, all
+# specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
+# The generated `.rspec` file contains `--require spec_helper` which will cause
+# this file to always be loaded, without a need to explicitly require it in any
+# files.
+#
+# Given that it is always loaded, you are encouraged to keep this file as
+# light-weight as possible. Requiring heavyweight dependencies from this file
+# will add to the boot time of your test suite on EVERY test run, even for an
+# individual file that may not need all of that loaded. Instead, consider making
+# a separate helper file that requires the additional dependencies and performs
+# the additional setup, and require it from the spec files that actually need
+# it.
+#
+# See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
+RSpec.configure do |config|
+  # rspec-expectations config goes here. You can use an alternate
+  # assertion/expectation library such as wrong or the stdlib/minitest
+  # assertions if you prefer.
+  config.expect_with :rspec do |expectations|
+    # This option will default to `true` in RSpec 4. It makes the `description`
+    # and `failure_message` of custom matchers include text for helper methods
+    # defined using `chain`, e.g.:
+    #     be_bigger_than(2).and_smaller_than(4).description
+    #     # => "be bigger than 2 and smaller than 4"
+    # ...rather than:
+    #     # => "be bigger than 2"
+    expectations.include_chain_clauses_in_custom_matcher_descriptions = true
+  end
+
+  # rspec-mocks config goes here. You can use an alternate test double
+  # library (such as bogus or mocha) by changing the `mock_with` option here.
+  config.mock_with :rspec do |mocks|
+    # Prevents you from mocking or stubbing a method that does not exist on
+    # a real object. This is generally recommended, and will default to
+    # `true` in RSpec 4.
+    mocks.verify_partial_doubles = true
+  end
+
+  # This option will default to `:apply_to_host_groups` in RSpec 4 (and will
+  # have no way to turn it off -- the option exists only for backwards
+  # compatibility in RSpec 3). It causes shared context metadata to be
+  # inherited by the metadata hash of host groups and examples, rather than
+  # triggering implicit auto-inclusion in groups with matching metadata.
+  config.shared_context_metadata_behavior = :apply_to_host_groups
+
+  # The settings below are suggested to provide a good initial experience
+  # with RSpec, but feel free to customize to your heart's content.
+  #   # This allows you to limit a spec run to individual examples or groups
+  #   # you care about by tagging them with `:focus` metadata. When nothing
+  #   # is tagged with `:focus`, all examples get run. RSpec also provides
+  #   # aliases for `it`, `describe`, and `context` that include `:focus`
+  #   # metadata: `fit`, `fdescribe` and `fcontext`, respectively.
+  #   config.filter_run_when_matching :focus
+  #
+  #   # Allows RSpec to persist some state between runs in order to support
+  #   # the `--only-failures` and `--next-failure` CLI options. We recommend
+  #   # you configure your source control system to ignore this file.
+  #   config.example_status_persistence_file_path = "spec/examples.txt"
+  #
+  #   # Limits the available syntax to the non-monkey patched syntax that is
+  #   # recommended. For more details, see:
+  #   #   - http://rspec.info/blog/2012/06/rspecs-new-expectation-syntax/
+  #   #   - http://www.teaisaweso.me/blog/2013/05/27/rspecs-new-message-expectation-syntax/
+  #   #   - http://rspec.info/blog/2014/05/notable-changes-in-rspec-3/#zero-monkey-patching-mode
+  #   config.disable_monkey_patching!
+  #
+  #   # This setting enables warnings. It's recommended, but in some cases may
+  #   # be too noisy due to issues in dependencies.
+  #   config.warnings = true
+  #
+  #   # Many RSpec users commonly either run the entire suite or an individual
+  #   # file, and it's useful to allow more verbose output when running an
+  #   # individual spec file.
+  #   if config.files_to_run.one?
+  #     # Use the documentation formatter for detailed output,
+  #     # unless a formatter has already been configured
+  #     # (e.g. via a command-line flag).
+  #     config.default_formatter = "doc"
+  #   end
+  #
+  #   # Print the 10 slowest examples and example groups at the
+  #   # end of the spec run, to help surface which specs are running
+  #   # particularly slow.
+  #   config.profile_examples = 10
+  #
+  #   # Run specs in random order to surface order dependencies. If you find an
+  #   # order dependency and want to debug it, you can fix the order by providing
+  #   # the seed, which is printed after each run.
+  #   #     --seed 1234
+  #   config.order = :random
+  #
+  #   # Seed global randomization in this process using the `--seed` CLI option.
+  #   # Setting this allows you to use `--seed` to deterministically reproduce
+  #   # test failures related to randomization by passing the same `--seed` value
+  #   # as the one that triggered the failure.
+  #   Kernel.srand config.seed
+end

HW04/Dmitry_Susha/.rspec

@@ -0,0 +1 @@
+--require spec_helper

HW04/Dmitry_Susha/lib/student.rb

@@ -14,7 +14,7 @@ def to_work!(homework)
     homework.to_work!
   end
 
-  def add_answer!(homework, answer)
+  def add_answer!(homework, answer = '')
     homework.add_answer!(answer)
   end
 

HW04/Dmitry_Susha/spec/file_manager_spec.rb

@@ -0,0 +1,81 @@
+# frozen_string_literal: true
+
+RSpec.describe FileManager do
+  let(:foo_class) { Class.new { include FileManager } }
+  let(:dir) { 'spec/helpers' }
+  let(:file_name) { 'test.txt' }
+
+  describe '.create_file' do
+    context 'when succes create file' do
+      after do
+        File.delete('spec/helpers/test.txt')
+      end
+
+      it 'creates file' do
+        expect(foo_class.new.create_file(dir, file_name)).to be_a_kind_of(File)
+      end
+    end
+  end
+
+  describe '.add_data' do
+    context 'when data present' do
+      before do
+        File.open('spec/helpers/test.txt', 'a+')
+        3.times do
+          foo_class.new.add_data(dir, file_name, '!')
+        end
+      end
+
+      after do
+        File.delete('spec/helpers/test.txt')
+      end
+
+      it 'Each line have data' do
+        File.open("#{dir}/#{file_name}", 'r').each do |line|
+          expect(line.chomp).to eq('!')
+        end
+      end
+    end
+
+    context 'when data empty' do
+      before do
+        File.open('spec/helpers/test.txt', 'a+')
+        3.times do
+          foo_class.new.add_data(dir, file_name, '')
+        end
+      end
+
+      after do
+        File.delete('spec/helpers/test.txt')
+      end
+
+      it 'Each line empty' do
+        File.open("#{dir}/#{file_name}", 'r').each do |line|
+          expect(line.chomp).to eq('')
+        end
+      end
+    end
+  end
+
+  describe '.read_dir' do
+    context 'when there is a file' do
+      before do
+        File.open('spec/helpers/test.txt', 'a+')
+      end
+
+      after do
+        File.delete('spec/helpers/test.txt')
+      end
+
+      it 'show file name' do
+        expect(foo_class.new.read_dir(dir)).to include('test.txt')
+      end
+    end
+
+    context 'when the directory is empty' do
+      it 'show array without files names' do
+        expect(foo_class.new.read_dir(dir)).to eq(['..', '.'])
+      end
+    end
+  end
+end