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require File.expand_path('../../fixtures/common', __FILE__)
describe :proc_call, shared: true do
it "invokes self" do
Proc.new { "test!" }.send(@method).should == "test!"
lambda { "test!" }.send(@method).should == "test!"
proc { "test!" }.send(@method).should == "test!"
end
it "sets self's parameters to the given values" do
Proc.new { |a, b| a + b }.send(@method, 1, 2).should == 3
Proc.new { |*args| args }.send(@method, 1, 2, 3, 4).should == [1, 2, 3, 4]
Proc.new { |_, *args| args }.send(@method, 1, 2, 3).should == [2, 3]
lambda { |a, b| a + b }.send(@method, 1, 2).should == 3
lambda { |*args| args }.send(@method, 1, 2, 3, 4).should == [1, 2, 3, 4]
lambda { |_, *args| args }.send(@method, 1, 2, 3).should == [2, 3]
proc { |a, b| a + b }.send(@method, 1, 2).should == 3
proc { |*args| args }.send(@method, 1, 2, 3, 4).should == [1, 2, 3, 4]
proc { |_, *args| args }.send(@method, 1, 2, 3).should == [2, 3]
end
end
describe :proc_call_on_proc_new, shared: true do
it "replaces missing arguments with nil" do
Proc.new { |a, b| [a, b] }.send(@method).should == [nil, nil]
Proc.new { |a, b| [a, b] }.send(@method, 1).should == [1, nil]
end
it "silently ignores extra arguments" do
Proc.new { |a, b| a + b }.send(@method, 1, 2, 5).should == 3
end
it "auto-explodes a single Array argument" do
p = Proc.new { |a, b| [a, b] }
p.send(@method, 1, 2).should == [1, 2]
p.send(@method, [1, 2]).should == [1, 2]
p.send(@method, [1, 2, 3]).should == [1, 2]
p.send(@method, [1, 2, 3], 4).should == [[1, 2, 3], 4]
end
end
describe :proc_call_on_proc_or_lambda, shared: true do
it "ignores excess arguments when self is a proc" do
a = proc {|x| x}.send(@method, 1, 2)
a.should == 1
a = proc {|x| x}.send(@method, 1, 2, 3)
a.should == 1
end
it "will call #to_ary on argument and return self if return is nil" do
argument = ProcSpecs::ToAryAsNil.new
result = proc { |x, _| x }.send(@method, argument)
result.should == argument
end
it "substitutes nil for missing arguments when self is a proc" do
proc {|x,y| [x,y]}.send(@method).should == [nil,nil]
a = proc {|x,y| [x, y]}.send(@method, 1)
a.should == [1,nil]
end
it "raises an ArgumentError on excess arguments when self is a lambda" do
lambda {
lambda {|x| x}.send(@method, 1, 2)
}.should raise_error(ArgumentError)
lambda {
lambda {|x| x}.send(@method, 1, 2, 3)
}.should raise_error(ArgumentError)
end
it "raises an ArgumentError on missing arguments when self is a lambda" do
lambda {
lambda {|x| x}.send(@method)
}.should raise_error(ArgumentError)
lambda {
lambda {|x,y| [x,y]}.send(@method, 1)
}.should raise_error(ArgumentError)
end
it "treats a single Array argument as a single argument when self is a lambda" do
lambda { |a| a }.send(@method, [1, 2]).should == [1, 2]
lambda { |a, b| [a, b] }.send(@method, [1, 2], 3).should == [[1,2], 3]
end
it "treats a single Array argument as a single argument when self is a proc" do
proc { |a| a }.send(@method, [1, 2]).should == [1, 2]
proc { |a, b| [a, b] }.send(@method, [1, 2], 3).should == [[1,2], 3]
end
end
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