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# frozen_string_literal: true
RSpec.describe Pry::ColorPrinter do
let(:output) { StringIO.new }
describe ".default" do
let(:output) { StringIO.new }
let(:pry_instance) { Pry.new(output: output) }
it "prints output prefix with value" do
described_class.default(StringIO.new, 'foo', pry_instance)
expect(output.string).to eq("=> \"foo\"\n")
end
end
describe ".pp" do
context "when no exception is raised in #inspect" do
let(:healthy_class) do
Class.new do
def inspect
'string'
end
end
end
it "prints a string with a newline" do
described_class.pp(healthy_class.new, output)
expect(output.string).to eq("string\n")
end
end
context "when an exception is raised in #inspect" do
let(:broken_class) do
Class.new do
def inspect
raise
end
end
end
it "still prints a string" do
described_class.pp(broken_class.new, output)
expect(output.string)
.to match(/\A\e\[32m#<#<Class:0x.+>:0x.+>\e\[0m\e\[0m\n\z/)
end
end
context "when printing a BasicObject" do
it "prints a string" do
described_class.pp(BasicObject.new, output)
expect(output.string)
.to match(/\A\e\[32m#<BasicObject:0x.+>\e\[0m\e\[0m\n\z/)
end
end
context "when #inspect returns an object literal" do
let(:klass) do
Class.new do
def inspect
'#<Object:0x00007fe86bab53c8>'
end
end
end
it "prints the object inspect" do
described_class.pp(klass.new, output)
expect(output.string).to eq("\e[32m#<Object:0x00007fe86bab53c8>\e[0m\n")
end
context "and when SyntaxHighlighter returns a token starting with '\e'" do
before do
expect(Pry::SyntaxHighlighter).to receive(:keyword_token_color)
.and_return("\e[32m")
end
it "prints the object as is" do
described_class.pp(klass.new, output)
expect(output.string).to eq("\e[32m#<Object:0x00007fe86bab53c8>\e[0m\n")
end
end
context "and when SyntaxHighlighter returns a token that doesn't start with '\e'" do
before do
expect(Pry::SyntaxHighlighter).to receive(:keyword_token_color)
.and_return('token')
end
it "prints the object with escape characters" do
described_class.pp(klass.new, output)
expect(output.string)
.to eq("\e[0m\e[0;tokenm#<Object:0x00007fe86bab53c8>\e[0m\n")
end
end
end
context "when #inspect raises Pry::Pager::StopPaging" do
let(:klass) do
Class.new do
def inspect
raise Pry::Pager::StopPaging
end
end
end
it "propagates the error" do
expect { described_class.pp(klass.new, output) }
.to raise_error(Pry::Pager::StopPaging)
end
end
end
end
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