Class: CacheMock

Inherits:
Object
  • Object
show all
Defined in:
lib/cache_mock.rb,
lib/cache_mock/version.rb

Constant Summary collapse

VERSION = 
"0.1.1"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CacheMock

Returns a new instance of CacheMock.



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# File 'lib/cache_mock.rb', line 5

def initialize()
  @db = {}
end

Instance Attribute Details

#db ⇒ Object (readonly)

Returns the value of attribute db.



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# File 'lib/cache_mock.rb', line 4

def db
  @db
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/cache_mock.rb', line 26

def clear
  @db = {}
end

#exist?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cache_mock.rb', line 30

def exist?(key)
  db.key?(key) && (db[key][:expiration_time] > Time.now.to_i)
end

#fetch(key, options = {}, &block) ⇒ Object 



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# File 'lib/cache_mock.rb', line 9

def fetch(key, options = {}, &block)

  if exist?(key)
    # fetch and return result
    db[key][:value]
  else
    if block_given?
      # make the DB query and create a new entry for the request result
      db[key] = build_record(options, &block)
      db[key][:value]
    else
      # no block given, do nothing
      nil
    end
  end
end

#read(key) ⇒ Object 



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# File 'lib/cache_mock.rb', line 34

def read(key)
  db[key][:value] if exist?(key)
end

#write(key, value, options = {}) ⇒ Object 



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# File 'lib/cache_mock.rb', line 38

def write(key, value, options = {})
  db[key] = build_record(options) { value }
  value
end