diff options
author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-01-20 20:38:57 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-01-20 20:38:57 +0000 |
commit | 6204e0804b24f1675b49d5880da014411bcfb831 (patch) | |
tree | ce6c00bf078fc416936ca3cdc972b9b3c1c78dae /spec/ruby/core/proc | |
parent | 58573c33e4720315ed27491e31dcc22892e1ce95 (diff) |
Update to ruby/spec@35a9fba
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66888 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/core/proc')
-rw-r--r-- | spec/ruby/core/proc/compose_spec.rb | 94 | ||||
-rw-r--r-- | spec/ruby/core/proc/shared/compose.rb | 47 |
2 files changed, 141 insertions, 0 deletions
diff --git a/spec/ruby/core/proc/compose_spec.rb b/spec/ruby/core/proc/compose_spec.rb new file mode 100644 index 0000000000..f1befe658b --- /dev/null +++ b/spec/ruby/core/proc/compose_spec.rb @@ -0,0 +1,94 @@ +require_relative '../../spec_helper' +require_relative 'shared/compose' + +ruby_version_is "2.6" do + describe "Proc#<<" do + it "returns a Proc that is the composition of self and the passed Proc" do + upcase = proc { |s| s.upcase } + succ = proc { |s| s.succ } + + (succ << upcase).call('Ruby').should == "RUBZ" + end + + it "calls passed Proc with arguments and then calls self with result" do + f = proc { |x| x * x } + g = proc { |x| x + x } + + (f << g).call(2).should == 16 + (g << f).call(2).should == 8 + end + + it "accepts any callable object" do + inc = proc { |n| n + 1 } + + double = Object.new + def double.call(n); n * 2; end + + (inc << double).call(3).should == 7 + end + + it_behaves_like :proc_compose, :<<, -> { proc { |s| s.upcase } } + + describe "composition" do + it "is a Proc" do + f = proc { |x| x * x } + g = proc { |x| x + x } + + (f << g).is_a?(Proc).should == true + (f << g).lambda?.should == false + end + + it "may accept multiple arguments" do + inc = proc { |n| n + 1 } + mul = proc { |n, m| n * m } + + (inc << mul).call(2, 3).should == 7 + end + end + end + + describe "Proc#>>" do + it "returns a Proc that is the composition of self and the passed Proc" do + upcase = proc { |s| s.upcase } + succ = proc { |s| s.succ } + + (succ >> upcase).call('Ruby').should == "RUBZ" + end + + it "calls passed Proc with arguments and then calls self with result" do + f = proc { |x| x * x } + g = proc { |x| x + x } + + (f >> g).call(2).should == 8 + (g >> f).call(2).should == 16 + end + + it "accepts any callable object" do + inc = proc { |n| n + 1 } + + double = Object.new + def double.call(n); n * 2; end + + (inc >> double).call(3).should == 8 + end + + it_behaves_like :proc_compose, :>>, -> { proc { |s| s.upcase } } + + describe "composition" do + it "is a Proc" do + f = proc { |x| x * x } + g = proc { |x| x + x } + + (f >> g).is_a?(Proc).should == true + (f >> g).lambda?.should == false + end + + it "may accept multiple arguments" do + inc = proc { |n| n + 1 } + mul = proc { |n, m| n * m } + + (mul >> inc).call(2, 3).should == 7 + end + end + end +end diff --git a/spec/ruby/core/proc/shared/compose.rb b/spec/ruby/core/proc/shared/compose.rb new file mode 100644 index 0000000000..64338cada8 --- /dev/null +++ b/spec/ruby/core/proc/shared/compose.rb @@ -0,0 +1,47 @@ +describe :proc_compose, shared: true do + ruby_version_is "2.6"..."2.7" do + it "raises NoMethodError when called if passed not callable object" do + not_callable = Object.new + composed = @object.call.send(@method, not_callable) + + -> { + composed.call('a') + }.should raise_error(NoMethodError, /undefined method `call' for/) + + end + + it "when called does not try to coerce argument with #to_proc" do + succ = Object.new + def succ.to_proc(s); s.succ; end + + composed = @object.call.send(@method, succ) + + -> { + composed.call('a') + }.should raise_error(NoMethodError, /undefined method `call' for/) + end + end + + ruby_version_is "2.7" do # https://bugs.ruby-lang.org/issues/15428 + it "raises TypeError if passed not callable object" do + lhs = @object.call + not_callable = Object.new + + -> { + lhs.send(@method, not_callable) + }.should raise_error(TypeError, "callable object is expected") + + end + + it "does not try to coerce argument with #to_proc" do + lhs = @object.call + + succ = Object.new + def succ.to_proc(s); s.succ; end + + -> { + lhs.send(@method, succ) + }.should raise_error(TypeError, "callable object is expected") + end + end +end |