module RR::DoubleDefinitions::DoubleDefinition::DefinitionConstructionMethods
Public Instance Methods
Double#after_call creates a callback that occurs after call is called. The passed in block receives the return value of the Double being called. An Expection will be raised if no block is passed in.
mock(subject).method_name {return_value}.after_call {|return_value|} subject.method_name # return_value
This feature is built into proxies.
mock.proxy(User).find('1') {|user| mock(user).valid? {false}}
# File lib/rr/double_definitions/double_definition.rb, line 213 def after_call(&after_call_proc) raise ArgumentError, "after_call expects a block" unless after_call_proc @after_call_proc = after_call_proc self end
Double#implemented_by sets the implementation of the Double. This method takes a Proc or a Method. Passing in a Method allows the Double to accept blocks.
obj = Object.new def obj.foobar yield(1) end mock(obj).method_name.implemented_by(obj.method(:foobar))
# File lib/rr/double_definitions/double_definition.rb, line 263 def implemented_by(implementation) @implementation = implementation self end
# File lib/rr/double_definitions/double_definition.rb, line 249 def implemented_by_original_method implemented_by ORIGINAL_METHOD self end
Double#ordered sets the Double to have an ordered expectation.
Passing in a block sets the return value.
mock(subject).method_name.ordered {return_value}
# File lib/rr/double_definitions/double_definition.rb, line 174 def ordered(&return_value_block) raise( Errors::DoubleDefinitionError, "Double Definitions must have a dedicated Double to be ordered. " << "For example, using instance_of does not allow ordered to be used. " << "proxy the class's #new method instead." ) unless @double @ordered = true space.register_ordered_double(@double) install_method_callback return_value_block DoubleDefinitionCreateBlankSlate.new(double_definition_create) end
Double#returns accepts an argument value or a block. It will raise an ArgumentError if both are passed in.
Passing in a block causes Double to return the return value of the passed in block.
Passing in an argument causes Double to return the argument.
# File lib/rr/double_definitions/double_definition.rb, line 235 def returns(*args, &implementation) if !args.empty? && implementation raise ArgumentError, "returns cannot accept both an argument and a block" end if implementation install_method_callback implementation else install_method_callback(lambda do |*lambda_args| args.first end) end self end
Double#verbose sets the Double to print out each method call it receives.
Passing in a block sets the return value
# File lib/rr/double_definitions/double_definition.rb, line 222 def verbose(&after_call_proc) @verbose = true @after_call_proc = after_call_proc self end
# File lib/rr/double_definitions/double_definition.rb, line 268 def verify_method_signature @verify_method_signature = true self end
Double#yields sets the Double to invoke a passed in block when the Double is called. An Expection will be raised if no block is passed in when the Double is called.
Passing in a block sets the return value.
mock(subject).method_name.yields(yield_arg1, yield_arg2) {return_value} subject.method_name {|yield_arg1, yield_arg2|}
# File lib/rr/double_definitions/double_definition.rb, line 197 def yields(*args, &return_value_block) @yields_value = args install_method_callback return_value_block self end
Protected Instance Methods
# File lib/rr/double_definitions/double_definition.rb, line 275 def install_method_callback(block) if block if implementation_is_original_method? after_call(&block) else implemented_by block end end end