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require "helper"
describe Thor::LineEditor::Readline do
before do
unless defined? ::Readline
::Readline = double("Readline")
allow(::Readline).to receive(:completion_append_character=).with(nil)
end
end
describe ".available?" do
it "returns true when ::Readline exists" do
allow(Object).to receive(:const_defined?).with(:Readline).and_return(true)
expect(described_class).to be_available
end
it "returns false when ::Readline does not exist" do
allow(Object).to receive(:const_defined?).with(:Readline).and_return(false)
expect(described_class).not_to be_available
end
end
describe "#readline" do
it "invokes the readline library" do
expect(::Readline).to receive(:readline).with("> ", true).and_return("foo")
expect(::Readline).not_to receive(:completion_proc=)
editor = Thor::LineEditor::Readline.new("> ", {})
expect(editor.readline).to eq("foo")
end
it "supports the add_to_history option" do
expect(::Readline).to receive(:readline).with("> ", false).and_return("foo")
expect(::Readline).not_to receive(:completion_proc=)
editor = Thor::LineEditor::Readline.new("> ", :add_to_history => false)
expect(editor.readline).to eq("foo")
end
it "provides tab completion when given a limited_to option" do
expect(::Readline).to receive(:readline)
expect(::Readline).to receive(:completion_proc=) do |proc|
expect(proc.call("")).to eq %w[Apples Chicken Chocolate]
expect(proc.call("Ch")).to eq %w[Chicken Chocolate]
expect(proc.call("Chi")).to eq ["Chicken"]
end
editor = Thor::LineEditor::Readline.new("Best food: ", :limited_to => %w[Apples Chicken Chocolate])
editor.readline
end
it "provides path tab completion when given the path option" do
expect(::Readline).to receive(:readline)
expect(::Readline).to receive(:completion_proc=) do |proc|
expect(proc.call("../line_ed").sort).to eq ["../line_editor/", "../line_editor_spec.rb"].sort
end
editor = Thor::LineEditor::Readline.new("Path to file: ", :path => true)
Dir.chdir(File.dirname(__FILE__)) { editor.readline }
end
it "uses STDIN when asked not to echo input" do
expect($stdout).to receive(:print).with("Password: ")
noecho_stdin = double("noecho_stdin")
expect(noecho_stdin).to receive(:gets).and_return("secret")
expect($stdin).to receive(:noecho).and_yield(noecho_stdin)
editor = Thor::LineEditor::Readline.new("Password: ", :echo => false)
expect(editor.readline).to eq("secret")
end
end
end
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