Skip to content

Add specs for Kernel#p return values #1385

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
andrykonchin merged 1 commit into from
Jul 27, 2026
+23 −2
Merged

Add specs for Kernel#p return values #1385

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
25 changes: 23 additions & 2 deletions core/kernel/p_spec.rb
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -69,11 +69,32 @@
end

it "prints nothing if no argument is given" do
-> { p }.should output("")
-> { p.should == nil }.should output("")
end

it "prints nothing if called splatting an empty Array" do
-> { p(*[]) }.should output("")
-> { p(*[]).should == nil }.should output("")
end

it "returns the argument if a single argument is given" do
o = mock("Inspector Gadget")
o.should_receive(:inspect).any_number_of_times.and_return "Next time, Gadget, NEXT TIME!"

-> { p(o).should.equal?(o) }.should output("Next time, Gadget, NEXT TIME!\n")
end

it "returns the argument if called splatting a single-element Array" do
o = mock("Inspector Gadget")
o.should_receive(:inspect).any_number_of_times.and_return "Next time, Gadget, NEXT TIME!"

-> { p(*[o]).should.equal?(o) }.should output("Next time, Gadget, NEXT TIME!\n")
end

it "returns an Array of the arguments if multiple arguments are given" do
o = mock("Inspector Gadget")
o.should_receive(:inspect).any_number_of_times.and_return "Next time, Gadget, NEXT TIME!"

-> { p(o, o).should == [o, o] }.should output("Next time, Gadget, NEXT TIME!\nNext time, Gadget, NEXT TIME!\n")
end

# Not sure how to spec this, but wanted to note the behavior here
Expand Down