Module: Callme::ArgsValidator

Defined in:
lib/callme/args_validator.rb

Overview

Helper class for arguments validation

Class Method Summary collapse

Class Method Details

.block_given!(block) ⇒ Object

Checks that specified block is given

Parameters:

  • block —

    some block



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# File 'lib/callme/args_validator.rb', line 43

def block_given!(block)
  unless block
    raise ArgumentError, "Block should be given"
  end
end

.has_key!(hash, key) ⇒ Object

Checks that specifid hash has a specified key

Parameters:

  • hash —

    some hash

  • key —

    hash’s key



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# File 'lib/callme/args_validator.rb', line 35

def has_key!(hash, key)
  unless hash.has_key?(key)
    raise ArgumentError, "#{hash} should has #{key} key"
  end
end

.is_array!(obj, obj_name) ⇒ Object

Checks that specifid obj is an Array

Parameters:

  • obj —

    some object

  • obj_name —

    object’s name, used to clarify error causer in exception



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# File 'lib/callme/args_validator.rb', line 17

def is_array!(obj, obj_name)
  unless obj.is_a?(Array)
    raise ArgumentError, "#{obj_name} should be an Array"
  end
end

.is_hash!(obj, obj_name) ⇒ Object

Checks that specifid obj is a Hash

Parameters:

  • obj —

    some object

  • obj_name —

    object’s name, used to clarify error causer in exception



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# File 'lib/callme/args_validator.rb', line 26

def is_hash!(obj, obj_name)
  unless obj.is_a?(Hash)
    raise ArgumentError, "#{obj_name} should be a Hash"
  end
end

.is_symbol!(obj, obj_name) ⇒ Object

Checks that specifid obj is a symbol

Parameters:

  • obj —

    some object

  • obj_name —

    object’s name, used to clarify error causer in exception



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# File 'lib/callme/args_validator.rb', line 8

def is_symbol!(obj, obj_name)
  unless obj.is_a?(Symbol)
    raise ArgumentError, "#{obj_name} should be a Symbol"
  end
end